Advances in global wave modelling

At MetOcean Solutions, we continuously improve our models to ensure the highest possible performance.

Our science team has recently made great improvements in global wave hindcasting thanks to using more accurate historical winds and studying the effect of icebergs and ocean currents in ocean waves.

MetOcean’s Southern Ocean Programme in partnership with Defence Technology Agency has been collecting wave data in the Southern Ocean over the last 2 years (find out more at www.metocean.co.nz/southern-ocean). The area presents the highest modelling errors, and the data gathered is helping to reduce that. This is a crucial achievement due to the energetic swells constantly generated in this part of the ocean that have far reaching effects. Consequently, it will result in better wave prediction over coastal areas.

MetOcean Solutions’ physical oceanographer Dr Jorge Perez, responsible for improving wave hindcasting and forecasting capabilities, says the analysis undertaken and the historical reconstruction has made it possible to minimize errors in wave data from deep waters, allowing better boundary conditions for high-resolution grids in coastal regions.

“Lessons learned such as the importance of currents and icebergs will result in advancements to our wave forecasting operational systems and therefore, historical data and wave predictions of the highest quality to end users.”

Clear gains are apparent, with an approximate 30% improvement in model skill demonstrated overall. The resulting improvements for the year of 2015 are shown as an example in the figure below.

 
fig 1-top.png
 
 
Example of bias comparison with model improvements (top) and reference simulation (bottom) for the year 2015.

Example of bias comparison with model improvements (top) and reference simulation (bottom) for the year 2015.

 

MetOcean’s advancements in global wave modelling were presented by Dr Perez at Spanish Conference on Coastal and Port Engineering, XV Jornadas Españolas de Ingeniería de Costas y Puertos, held last week in Málaga, Spain.

The conference is a biennial scientific-technical event, gathering experts and decision makers to facilitate knowledge exchange between all sectors engaged in coastal and port activities. For more information, visit www.costasypuertos2019.com

MetOcean Solutions is a division of New Zealand’s National Meteorological Service.

The full abstract is provided below.


Avances en modelado de oleaje global

Pérez, Jorge* Rapizo, Henrique* Guedes, Rafael* y Durrant, Tom*

*Metocean Solutions, New Zealand Meteorological Service.

1.       Introducción

El modelado de oleaje a escala global ha experimentado un rápido desarrollo en los últimos años dando lugar a reconstrucciones históricas cada vez más precisas (e.g., Durrant et al., 2014; Pérez et al., 2017). No obstante, incluso las bases de datos más recientes presentan errores significativos en ciertas regiones. Esto plantea una doble problemática. Por un lado, la creciente internacionalización de los intereses de empresas e instituciones hace evidente la necesidad de contar con datos de calidad en todo el mundo. Por otro lado, los errores en una ubicación específica a menudo son consecuencia de errores a miles de kilómetros de distancia, en la zona de generación o propagación. Por ejemplo, el Océano Antártico es la región que actualmente presenta mayores errores; en parte porque es un área muy compleja desde el punto de vista del modelado y en parte por la tradicional escasez de medidas instrumentales en el hemisferio sur. No obstante, es crucial reducir dichos errores, ya que constituye la zona de generación de swells muy energéticos que alcanzan las costas de regiones mucho más pobladas.

La forma de más obvia de reducir errores es utilizar forzamientos (i.e., viento, hielo y corrientes) de mayor calidad. En este análisis se han utilizado y comparado las bases de datos más recientes para obtener la combinación de forzamientos que resulta en menores errores en el modelado de oleaje a escala global. Como es habitual en han analizado vientos y cobertura de hielo, en este caso del reanálisis CFSR generado por NCEP-NCAR y del reanálisis ERA5 generado recientemente por el centro europeo para predicciones de medio plazo (ECMWF). Adicionalmente, se han analizado el efecto de la probabilidad de icebergs derivada de imágenes de satélite y de las corrientes oceánicas de tres bases de datos: CFSR, HYCOM y GLORYS. La evaluación de los resultados se ha basado principalmente en mediciones de satélite, pero se ha complementado con boyas y drifters recientemente desplegados en Australia y Nueva Zelanda.

2.       Resultados y conclusiones

La comparación entre experimentos con distintos forzamientos se ha basado en el modelo numérico WaveWatch III en su versión 5.16 utilizando los términos fuente ST4. La configuración de referencia es una malla global de 0.5 grados por 0.5 grados, forzada con vientos y cobertura de hielo de CFSR, sin icebergs ni corrientes. La mejora de mayor magnitud respecto a esta configuración se obtiene al sustituir CFSR por ERA5, lo que reduce notablemente el sesgo y el error cuadrático en la mayor parte del mundo. Estos resultados indican que las mejoras en resolución, asimilación de datos, o modelado de ciclones tropicales respecto al anterior reanálisis del ECMWF han conseguido que actualmente ERA5 sea la opción más adecuada para forzar modelos globales de oleaje. La inclusión de corrientes también produce mejoras a nivel global pero de una magnitud menor. En concreto las tres bases de datos de corrientes ayudan a reducir los sesgos, siendo GLORYS la que produce mejores resultados a pesar de tener menor resolución espacial que HYCOM y menor resolución temporal que CFSR. Es especialmente notable la reducción del sesgo positivo en el Océano Antártico, principalmente por el efecto de la corriente circumpolar antártica, que reduce la transferencia de energía del viento al oleaje. No obstante, incluso con la introducción de corrientes sigue existiendo un sesgo positivo. Este sesgo se reduce aún más con la inclusión de icebergs, que aumentan el bloqueo de energía, pero no llega a desaparecer por completo. La comparación entre el sesgo de la configuración de referencia y el de la configuración óptima para el año 2015 se muestra en la figura 1. La comparación de errores cuadráticos (no mostrado) indica mejoras globales en torno al 30%.

fig 1-top.png
Fig. 1. Sesgo respecto a datos de satélite de la simulación global forzada con vientos de ERA5, icebergs, y corrientes GLORYS (panel superior) y la simulación de referencia, forzada con vientos de CFSR y sin icebergs ni corrientes (panel inferior) para el año 2015.

Fig. 1. Sesgo respecto a datos de satélite de la simulación global forzada con vientos de ERA5, icebergs, y corrientes GLORYS (panel superior) y la simulación de referencia, forzada con vientos de CFSR y sin icebergs ni corrientes (panel inferior) para el año 2015.

Este análisis a escala global y la reconstrucción histórica resultante ha permitido minimizar los errores en los datos de oleaje en aguas profundas y disponer de mejores condiciones de contorno para las mallas de detalle en zonas costeras. Adicionalmente, lecciones aprendidas de este análisis, como la importancia de corrientes y icebergs, van a resultar en mejoras en los sistemas operacionales de predicción de oleaje de Metservice. Esto permite proporcionar a los usuarios datos históricos y predicciones de oleaje de la mayor calidad posible.

Agradecimientos

Se agradece el apoyo a este estudio tanto de la armada de Nueva Zelanda (NZ Navy) como de la oficina de investigación naval (Office of Naval Research, ONR) por medio de la subvención NOOO14-17-S-B001.

Referencias

DURRANT, T., GREENSLADE, D., HEMER, M. y TRENHAM, C. (2014). “A Global Hindcast focussed on the Central and South Pacific”. CAWCR Technical Report , 46.

PEREZ, J., MENENDEZ, M. y LOSADA, I. J. (2017). “GOW2: A global wave hindcast for coastal applications”. Coastal Engineering, 124 , 1-11.

MetOcean Solutions’ ocean forecasting system presentation at OceanPredict’19 Symposium in Canada

Next week, Dr João Marcos Souza and Prof Moninya Roughan will be at OceanPredict ’19 Symposium in Halifax, Canada.

Metocean Solutions’ physical oceanographer Dr João Marcos Souza will present “New Zealand’s national ocean forecast system - present and future”, showcasing MetOcean’s sophisticated operational ocean forecasting capability. Based on international best practices with the current state-of-the-art science, the system combines a number of different ocean models and data dissemination platforms. It is designed for rapid deployment of high-resolution model domains and portability between different platforms.

 
General architecture concept of MetOcean’s operational system.

General architecture concept of MetOcean’s operational system.

 

“We will present some of the advances we are making in ocean circulation modelling, an overview of MetOcean’s operational system and capabilities, together with our ongoing developments and future plans,” says João. “It is a great opportunity to present the latest advances in New Zealand’s operational oceanography and engage with best practices implemented around the world.”

At the conference, Metocean Solutions’ Head of Research Partnerships Prof Moninya Roughan will be presenting the Moana Project. The Moana Project, led by Prof. Roughan, is a cross-institutional programme involving all the oceanographic research organisations in New Zealand, in collaboration with international experts from Australia and the United States. The project will shed new light on the performance of New Zealand’s oceans to support the seafood sector.

The OceanPredict ’19 Symposium, hosted by GODAE OceanView, is being held 6-10 May at Halifax Convention Centre, Canada. The event brings together oceanographic science, research and end-user communities to increase awareness of current ocean modelling capabilities, and to explore and define the direction of future operational ocean forecasting.

MetOcean Solutions is a division of New Zealand’s National Meteorological Service.

For more information, visit the conference website: oceanpredict19.org

The full abstracts are provided below.


New Zealand ocean forecast system - present and future

Azevedo Correia de Souza, Joao*, Soutelino, Rafael*, Durrant, Tom*, Couto, Phellipe*

New Zealand’s maritime domain is one of the largest on the planet, with an exclusive economic zone of approximately 4,300,000 km2 – about 15 times its land area. The seafood sector alone brings $4.18B to NZ annually. Offshore oil and gas exploration provides about 30% of the country’s consumption, from 21 petroleum licenses in the Taranaki basin. Moreover, tourism is a growing industry accounting for about 5.9% of the GDP and often related to the country’s coastal landscapes. Therefore, having a reliable ocean forecast system is of critical importance to the country’s economy and to the safety and resilience of the community and environment. This includes the capability to model and forecast ocean processes at a range of spatial and temporal scales. To accomplish this, a sophisticated system including different ocean models and data dissemination platforms has been developed. The system is designed for rapid deployment of high-resolution model domains, kept up to date with state-of-the-art techniques, and portability between different platforms. At the present, this system is mainly based on downscaling of global models (except for ocean waves) and a series of local nested model grids. A mix of “Regional Ocean Modeling System” (ROMS) and “Semi-implicit Cross-scale Hydroscience Integrated System Model” (SCHISM) domains are used to evaluate and predict ocean circulation and state properties, while “WAVEWATCH III” (WW3) and “Simulating Waves Nearshore” (SWAN) are used for simulating surface gravity waves down to harbour scales. A micro-service architecture based on docker and controlled by a built-for-purpose distributed workflow scheduler ensures a stable, highly-available system. New developments underway include the use of un-structured model grids, 4DVar data assimilation of global and local observations on a national scale, waves-circulation coupling, and the use of cloud-based computational resources. Focusing mainly on the ocean circulation modelling, a general description of the system and capabilities at Metocean are presented together with ongoing developments and future plans.

*MetOcean Solutions, division of Meteorological Service of New Zealand


The Moana Project: Seafood sector support for ocean data collection to improve ocean prediction in New Zealand

Roughan, Moninya*

New Zealand derives wealth and wellbeing from the ocean, including a seafood sector worth $4.18B annually, and yet, their oceans are very poorly understood. NZ lags other developed nations that have integrated ocean observing and modelling programmes, and cannot comprehensively measure, observe or predict the state of their Exclusive Economic Zone (EEZ).  Ocean circulation drives the transport of larvae, determines population connectivity and impacts fisheries recruitment and abundance, all of which are being impacted by ocean warming and changes in circulation patterns.

Embracing ‘the Internet of Things’ concepts, we are developing a low-cost smart ocean sensor to be deployed throughout NZ’s EEZ by the seafood sector. With our industry partners; Seafood NZ, Deepwater Group, Paua (Abalone) and Rock Lobster Industry Councils, iwi (indigenous) and recreational fishing communities, we will revolutionise ocean data collection. The temperature profile data will be returned in near real time via the cell phone network (or satellite) and ingested into data assimilating ocean prediction models, leading to an open-access nationwide Ocean Analysis and Prediction System, delivered by the Meteorological Service. This disruptive technology approach is an exemplar for other marine nations with strong seafood sectors and under investment in the marine observing and modelling space. We show the benefit of partnering with end users to collect and return research quality datasets that are relevant for industry needs.

This project will provide a more complete picture of ocean temperatures, circulation and dynamics, and the relationships with fishery recruitment variability, aiding prediction. This project will underpin operational efficiencies, biosecurity protection, risk mitigation and economic growth for NZ’s seafood sector ensuring long-term sustainability.

*MetOcean Solutions, division of Meteorological Service of New Zealand



MetOcean Solutions at SCHISM workshop in Sacramento

Last week, Phellipe Couto attended the Special SCHISM training workshop held at the California Department of Water Resources, Sacramento 15-18 April 2019.

Phellipe is MetOcean Solutions’ physical oceanographer responsible for operationalising the SCHISM model (Semi-implicit Cross-scale Hydroscience Integrated System Model)  for Tasman and Golden Bay, New Zealand and Port Phillip Bay, southeastern Australia.

The Special SCHISM training workshop was designed for developers and advanced users, and approached the latest developments in SCHISM model.

Operational SCHISM is MetOcean Solutions’ powerful new capability in high resolution coastal hydrodynamics, improving forecast by well representing complex nearshore bathymetries.

 
Special SCHISM training workshop

Special SCHISM training workshop

 

For more information about SCHISM model, visit schism.wiki.

Wave forecast model upgrades

MetOcean Solutions has released an upgrade in all regional and local scale operational wave models. This upgrade brings improvements to model skill throughout the forecast horizon.

Wave models are used to simulate the physical processes occurring in wave growth, wave breaking and wave propagation. The processes involved in describing the input from the wind and the dissipation from wave breaking are collectively referred to as the model source terms.

“New source terms (called ST6) have recently been implemented in the official release of the Simulating WAves Nearshore (SWAN) spectral wave model,” says MetOcean Solutions’ Senior Physical Oceanographer Dr Rafael Guedes. “These terms are based on field observations and incorporate some important new physical features, including airflow separation under strong wind forcing, swell dissipation and a better description of breaking dissipation.

“Our operational services rely extensively on SWAN. The new source terms represent a great improvement in the physical representation of wave generation and dissipation within our regional and local scale wave models.

“We have carefully calibrated and validated all our regional operational domains with the new physics,” continues Rafael. “Comparison against satellite altimeters and in-situ wave observations showed consistent improvements in our models across all major areas.”

Figure 1 and Figure 2 below show percentage changes in Root-Mean-Square-Deviation (RMSD) and scatter index (SI), two commonly-used measurements of wave model skills. Overall improvements are apparent as highlighted by the blue colours, with up to 30% decrease in RMSD and 11% decrease in SI with ST6 in some of these areas. The improvements are shown in more detail for MetOcean’s 5-km SWAN grid in Australia Northwest Shelf in Figures 3 and 4.

 
Figure 1. Percentage changes in Root-Mean-Square-Deviation (RMSD) between operational SWAN domains run with old and new SWAN physics. Blue and red indicate reduction and increase in RMSD respectively.

Figure 1. Percentage changes in Root-Mean-Square-Deviation (RMSD) between operational SWAN domains run with old and new SWAN physics. Blue and red indicate reduction and increase in RMSD respectively.

 
 
Figure 2. Percentage changes in Scatter Index (SI) between operational SWAN domains run with old and new SWAN physics. Blue and red indicate reduction and increase in SI respectively.

Figure 2. Percentage changes in Scatter Index (SI) between operational SWAN domains run with old and new SWAN physics. Blue and red indicate reduction and increase in SI respectively.

 
 
Figure 3. Validation against satellite altimeters of MetOcean Solutions’ 5km Australia Northwest Shelf SWAN domain using the old physics source terms. Overall scatter diagram and scatter density are shown at the top. Model bias and RMSD are presented at the bottom.

Figure 3. Validation against satellite altimeters of MetOcean Solutions’ 5km Australia Northwest Shelf SWAN domain using the old physics source terms. Overall scatter diagram and scatter density are shown at the top. Model bias and RMSD are presented at the bottom.

 
 
Figure 4. Validation against satellite altimeters of MetOcean Solutions’ 5km Australia Northwest Shelf SWAN domain using the new ST6 physics source terms. Overall scatter diagram and scatter density are shown at the top. Model bias and RMSD are presented at the bottom.

Figure 4. Validation against satellite altimeters of MetOcean Solutions’ 5km Australia Northwest Shelf SWAN domain using the new ST6 physics source terms. Overall scatter diagram and scatter density are shown at the top. Model bias and RMSD are presented at the bottom.

 

At MetOcean Solutions, a division of MetService, we continuously improve our models with the current state-of-the-art science to ensure the highest possible performance.



Moana Project opens 9 fully funded Ocean Sciences PhD positions in New Zealand

The Moana Project is a large cross-institutional team of researchers and PhD students who are exploring ocean dynamics and connectivity, including marine heat waves. New sensors for measuring will help us better understand and manage ocean warming impacts on our seafood industry. We will also explore how mātauranga Māori connects and inter-relates with this physical data.

As part of the Moana Project 9 fully funded PhD positions are available with the following project topics:

  1. Informing Iwi Interests: An effective cross-cultural ocean knowledge-exchange platform

  2. Māori as Oceanographers

  3. Marine heat waves around New Zealand: Identification and Causes

  4. High resolution regional modelling and connectivity around Kaikoura, NZ

  5. Nested Regional Modelling of Bay of Plenty - Diagnosing dynamics and circulation to understand Greenshell mussels connectivity

  6. Connectivity of 3 Kaimoana species at the national scale

  7. Kaikoura region abalone (paua) population genetics based on GBS-derived SNPs

  8. Connectivity of Greenshell mussels from national to regional scales - Population Genetics

  9. Connectivity of Greenshell mussels from national to regional scales - Microchemistry

The PhD students will contribute to New Zealand capacity-building in marine science and environmental resources management. The positions include full university fees plus a tax free stipend for 3 years of approximately $27,000 NZ, and some research expenses. Project topics, university and supervisor information are outlined in the link below. Candidates should be willing to start by July 2019.

The Moana Project, led by MetOcean Solutions, a division of Meteorological Service of New Zealand (MetService), was awarded $11.5 million over five years from the New Zealand Ministry of Business, Innovation and Employment Endeavour Fund and will shed new light on the performance of New Zealand’s oceans for an enduring seafood sector. The project was conceived through an industry-community-research partnership initiative, bringing together seafood sector data, Te Ao Māori knowledge, cutting-edge ocean sensing, and advanced numerical modelling to provide a reliable ocean forecast system to support marine industries.

For more information, visit www.moanaproject.org

Drifting wave buoys pass the Drake Passage

In February 2018, MetOcean Solutions deployed five solar powered wave buoys (Spotters) in the Southern Ocean in partnership with Spoondrift and the Defence Technology Agency. Now, one year later, these buoys have travelled more than 6500 km and are currently crossing the stormy waters of the Drake Passage, the body of water between South America’s Cape Horn and the South Shetland Islands.

 
DRIFT TRACK AND SIGNIFICANT WAVE HEIGHTS MEASURED OVER THE LAST year.

DRIFT TRACK AND SIGNIFICANT WAVE HEIGHTS MEASURED OVER THE LAST year.

 

The Southern Ocean programme is helping understand waves in the region and their impact on the climate system. The operation was led by MetOcean Solutions’ Technical Support Liaison Dr Aitana Forcén-Vázquez, Principal Investigator for Physical Oceanography aboard the Research Vessel Tangaroa on the science voyage to Antarctica with NIWA and the University of Auckland.

“The buoys were deployed in the Southern Ocean, home to the strongest current on Earth; the Antarctic Circumpolar Current. The Southern Ocean is the circular ocean that flows uninterrupted around Antarctica and occupies almost one quarter of all the world’s oceans. It plays an important role in the climate system, cycling heat, carbon and nutrients. Persistent storms and the lack of landmass in the Southern Ocean result in large fetches and strong winds - ideal conditions for generating large waves,” states Forcén-Vázquez.

MetOcean Solutions’ Science Development Manager Dr Tom Durrant says, “The waves generated in this region have far reaching effects, contributing significantly to the wave climate in all the major ocean basins. The New Zealand West Coast, for example, is periodically battered by large swell systems generated in Southern Ocean storms.”

This is the first time that this kind of wave buoy has been deployed in the Southern Ocean. It is the perfect scenario to test the response of this new technology in an energetic open ocean. If effective however, they could revolutionise the way we monitor remote ocean basins through a constellation of drifting buoys.

 
The wave buoys (Spotters) deployment.

The wave buoys (Spotters) deployment.

 

“These buoys (Spotters) are surprisingly easy to deploy, very light and easy to handle, and can be lowered in the water by hand using a line. As a result, you can deploy them in almost any kind of conditions, which greatly facilitates Southern Ocean operations,” complements Forcén-Vázquez.

Spoondrift developed the Spotter buoy as a citizen sensor to drive distributed ocean sensing and democratized data access. Tim Janssen, CEO of Spoondrift, explains “The Spotter buoy is designed to be easy to use, low-cost and solar-powered. From the Spotter Dashboard the user can access data and change settings on the device. The current generation Spotters have a battery protection feature that triggers a hibernation mode during extreme temperatures and extended periods of darkness in the Southern Ocean winter. Spoondrift continuously innovates its technology to simplify deployments and provide high-latitude options to ensure continuous data acquisition in extreme conditions”.

In addition to the five drifting buoys, MetOcean has the world’s southernmost open ocean moored buoy which last year recorded the highest wave in the Southern Hemisphere.

In recognition of the importance of this programme of work, this data is freely available to the scientific community.

MetOcean Solutions is a science-based consultancy wholly owned by MetService. MetOcean specialise in providing numerical modelling and analytical services in meteorology and oceanography.

Scotia Boelee joins Moana Project team

We are delighted to welcome Scotia Boelee as Programme Manager for the Moana Project. With a science background and vast experience in commercial negotiations and project management at an executive level, Scotia will assist Prof. Moninya Roughan in establishing the Moana Project’s framework and structure to ensure the success of the project.

 
Scotia-metocean-solutions.jpg
 

The Moana Project, led by MetOcean Solutions, was awarded $11.5 million over five years from the Government’s Endeavour Fund and will shed new light on the performance of New Zealand’s oceans to support an enduring seafood sector (find more information here).

New Zealand is currently experiencing a marine heatwave with potential to affect the distribution and abundance of marine life (see more at Stuff’s news). The Moana Project will greatly advance our understanding of ocean circulation, marine population connectivity of kaimoana species and marine heatwaves, investigating the drivers and impacts of marine heatwaves to improve prediction.

General Manager of MetOcean Solutions Dr Brett Beamsley says the Moana Project, led by Prof. Moninya Roughan, is a cross-institutional programme involving all the oceanographic research organisations in New Zealand, in collaboration with international experts from Australia and the United States.

“One of our priorities at this stage is to ensure the project is well structured at the outset in order to maximise the potential for success of the project, both for MetOcean and MetService, and also for each of the project partners. Scotia’s knowledge and experience will assist us to continue delivering cutting-edge science to help underpin New Zealand’s blue economy. We are pleased to welcome her to the team.”

Scotia is an executive-level programme management and business case specialist with 26 years’ global experience. She has successfully influenced world-scale ventures and government organisations to think strategically and maximise both their commercial and research and development opportunities, whilst effectively mitigating and managing their HSSEQ and enterprise risk.

Following her MSc in Chemistry at University of Canterbury, Scotia completed an MSc in Gender at the London School of Economics and Political Science in 2003.

“I am excited to be involved in a project as worthwhile as Moana,” she says.

Scotia is based in our New Plymouth office.

An operational high resolution hydrodynamic forecast model for Port Phillip Bay

MetOcean Solutions has recently operationalised a high resolution hydrodynamic forecast model that allows simultaneous simulation of waves, currents and their interaction for Port Phillip Bay, Australia.

This new capability was developed as part of a larger project funded by the Australian Cooperative Research Centres Projects initiative. The project, a partnership between OMC International, Pivot Maritime International, University of Melbourne and MetOcean Solutions will provide an integrated modelling system for predicting under-keel clearance to support port and shipping services in tidal inlets.

“This project was conceived through an industry-research partnership and has leveraged the technical expertise in all partners,” says MetOcean Solutions’ Development Manager Dr Tom Durrant. “By bringing cross-sector experience, it is possible to develop science value-added solutions designed to increase safety and assist informed decisions at sea.”

In this particular project, the circulation model (SCHISM) is coupled with an upgraded wave physics implemented in the Wind Wave Model (WWM-III). The ‘improved WWM-III’ combined with the state-of-the-art unstructured hydrodynamic model SCHISM develops a forecast model capable of simultaneous simulation of waves, currents and their interaction.

“This is of great importance in this part of the world,” says MetOcean Solutions’ physical oceanographer Phellipe Couto.

“Port Phillip Heads, connecting Port Phillip Bay and Bass Strait is a notorious stretch of water that has claimed many ships and lives. Strong tidal currents interacting with waves combine to create significant challenges to ship navigation. Explicit accounting of this interaction, combined with unstructured model grids allowing the complex features of the main channels to be resolved at much higher resolution than previously, offer significant improvements in our ability to accurately forecast both waves and currents in the heads.

“Working closely with the University of Melbourne has provided a great opportunity to rapidly transition cutting edge science into operational systems.”

The operational high resolution hydrodynamic forecast model developed will provide input into the under keel clearance system operated by OMC international, strengthening the offerings available through the Metocean Solutions and OMC partnership (find more information here).

Operational SCHISM is MetOcean Solutions’ powerful new capability in high resolution coastal hydrodynamics, improving forecast by well representing complex nearshore bathymetries. The forecast model was also operationalised for Tasman and Golden Bay, New Zealand. Click here for more information.

The SCHISM model for Port Phillip Bay is freely available at MetOceanView.

For more information visit www.metoceanview.com or contact us at enquiries@metocean.co.nz

Meet us at New Zealand Maritime Pilot Association Conference

Next week MetOcean Solutions and OMC International will be at New Zealand Maritime Pilots' Association Conference in Wellington.

Sébastien Boulay (MetOcean Solutions’ Business Development Scientist) and Giles Lesser (OMC’s NZ Business Development & Senior Coastal Engineer­) will be co-presenting the latest services developed to assist ports.

“The Australasia maritime pilots have been unmatched users and design contributors to our operational weather services for years,” says Sébastien. “It has been a privilege to work alongside them to develop unique tools and services that combine our ocean modelling expertise with the port and transit optimisation skills from OMC International.”

The conference, hosted by New Zealand Maritime Pilots Association, is being held 26th-30th of November at Te Papa Museum in Wellington. This year the focus theme is ‘Promoting Industry Understanding of Human Factors and Just Culture’.

For more information about the conference, visit nzmpa.org or contact us at enquiries@metocean.co.nz

 
 

Mariana Cussioli joins MetOcean Solutions

We are delighted to welcome Dr Mariana Cussioli to MetOcean Solutions. Mariana is an oceanographer, specialising in coastal environments. She will be joining our marine project consultancy team, based in Raglan.

MC-2.jpg

“Each of our scientists have their own scientific specialty and work interest. We continuously aim to diversify our overall team expertise whilst maintaining a strong coastal and ocean numerical modelling capability,” says MetOcean Solutions’ Marine Project Consultancy Manager Dr Alexis Berthot.

“We are really pleased to welcome Mariana to the team as her experience with a range of wave, current and sediment transport models and her solution-focused attitude will be a great asset for MetOcean.”

Following a MSc in Geological Oceanography at University of Sao Paulo, Brazil, Mariana recently completed her PhD in Coastal Oceanography at the University of Waikato, New Zealand. Her research was focused on dredge plume dynamics in ports and harbours to guide improvements in predictive models and the planning of dredging operations.

With expertise on hydrodynamics and sediment transport modelling, Mariana’s research interests concern the ecological effects of turbidity variations, wave modelling in estuarine areas and effects of waves and river discharge on coastal morphodynamics.

Mariana is excited to be joining MetOcean Solutions and to contribute to the marine project consultancy team:

“MetOcean is an amazing group of experts who are passionate about what they do. Through continuous development and collaboration with external partners and within our teams, the company delivers a wide range of solutions and is a reference point in the sector. It’s fantastic to be part of this organisation.”



Meet us at SIOP 2018 in Chile

Next week, Dr Aitana Forcén-Vázquez, MetOcean Solutions’ Technical Support Liaison, will be at the International Seminar of Engineering and Port Operations - SIOP 2018 in Chile.

“We are delighted to come for the second time to the International Seminar of Engineering and Port Operation, in its eighth edition, organised by ‘Empresa Portuaria Talcahuano San Vicente’,” says Aitana. “In this occasion, we will discuss about long waves and how its forecast helps port operations.

“We will discuss the challenges behind an accurate forecast and solutions we have been implementing on this side of the Pacific for the last 10 years.”

 
 

At the conference, Aitana will present ‘Long waves forecast supporting port operations’ in the ‘Natural and anthropic risks in port areas’ session.

Long waves cause problems in harbours and terminals in many ports around the world, including New Zealand and Chile. These waves can't be seen as they are usually masked by the sea and swell waves. Since 2005, MetOcean Solutions has been providing a specialist service to help port operators better manage long wave problems. Having studied long waves at more than 35 locations worldwide, Metocean’s science team has experience with every type of long wave-affected port, and has developed a range of effective forecasting solutions that are ready to deploy.

The SIOP 2018 is being held 7-9 November in Talcahuano, Chile. The conference is build around the theme ‘Ports for the future’, an opportunity to discuss strategies regarding the upcoming challenges in the port industry.

Click here for more information on the seminar.

For more information on long waves forecast, contact us at enquiries@metocean.co.nz.

Oscar Key joins MetOcean Solutions

We are very pleased to welcome Oscar Key to MetOcean Solutions. Oscar is a senior scientific developer and is part of our services and development team in Raglan. In his role, he will work on improving backend Application Programming Interface (API) capabilities at MetOcean Solutions.

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With nearly ten years’ experience in a wide variety of fields, including yacht tracking, medical imaging and analysing financial data, Oscar is an exceptional programmer used to writing code under tight performance constraints.

Following a BSc (Honours I) in Computer Science at Otago University, Oscar has developed machine learning systems for large data search indices, as well as many APIs in C, C++, and Python. Along with the APIs themselves, he’s handled deployment and regression testing with Docker, Vagrant, and similar tools. His experience also involves embedded programming, protocol implementation, high-performance image processing, bytecode disassembly and reverse engineering, as well as GUI development.

“I'm looking forward to joining a great team,” says Oscar. “We'll be working hard together to improve MetOcean's APIs.”

MetOcean at Australian Coastal and Oceans Modelling and Observations Workshop 2018

Prof Moninya Roughan, Chief Scientist MetOcean Solutions and Dr Alan Finkel, Australia’s Chief Scientist.

Prof Moninya Roughan, Chief Scientist MetOcean Solutions and Dr Alan Finkel, Australia’s Chief Scientist.

Last week the Australian Coastal and Oceans Modelling and Observations Workshop (ACOMO) 2018 was held in Canberra, Australia

MetOcean Solutions’ Chief Scientist Prof Moninya Roughan, part of the organising committee, says ACOMO workshops have been a great success over the years, engaging initiatives to integrate marine observations and to grown national coastal ocean modelling capability.

“This year’s conference saw more involvement and representation from marine industry showing the relevance of ocean modelling and observing to supporting blue economy growth aspirations.

Prof Moninya Roughan, Chief Scientist MetOcean Solutions and Sally Garrett, Research Lead New Zealand Defence Technology Agency.

Prof Moninya Roughan, Chief Scientist MetOcean Solutions and Sally Garrett, Research Lead New Zealand Defence Technology Agency.

“The Moana Project, a five year project recently awarded through the New Zealand Ministry of Business, Innovation and Employment Endeavour Fund, was conceived through an industry-community-research partnership initiative, bringing together the seafood sector, Te Ao Māori knowledge and oceanographic research organisations.”

MetOcean was also represented by Research Lead Sally Garrett from New Zealand Defence Technology Agency who gave a presentation on the Southern Ocean wave project. It is a collaborative effort between MetOcean Solutions and the New Zealand Defence Force to deploy the southernmost wave buoy that has ever been moored in the world, located about 11 km south of Campbell Island.

The full abstract of Garrett’s talk is provided below.


New Wave Observations in the Southern Ocean

Tom Durrant*, Peter McComb*, Jorge Perez*, Henrique Rapizo*, Sally Garrett^

The combination of persistent westerly winds, and the largely unbroken expanse of sea in the Southern Ocean, produces potentially enormous fetches, resulting in higher wave heights for longer periods than any other body of water. Due to the harsh ocean environment and remote location, it is also the least observed of any major ocean. While satellite altimeter data can be used to estimate the surface variance, the wave spectral characteristics cannot be measured remotely, and consequently the directional wave spectra in Southern Ocean are poorly sampled and not well understood.

In February 2017, MetOcean deployed a buoy off Campbell Island. At 52.7S, this is the Southernmost moored deployment to be made in the Southern Ocean. In February of this year, a second deployment was made at the site as part of a wider program in collaboration with the New Zealand Defence Force and Spoondrift which includes an additional five drifting buoys. These buoys complement the Australian SOFS mooring at 47S, and are collectively providing the first high quality in-situ wave observations in the Southern Ocean. They are already measuring phenomenal conditions, with the highest recorded wave in the Southern Hemisphere recorded in May of this year at 24.8m. These data are being used to quantitatively assess the performance of recent improvements in global wave models. An analysis of the relative importance of large scale ocean currents will also be presented. This project will inform the design of next generation of NZ Navy vessels supporting patrol responsibilities in the Southern Ocean.

*MetOcean Solutions. ^New Zealand Defence Technology Agency.

Check out the Southern Ocean wave buoy direct data feed.

An operational hydrodynamic forecast model for Tasman and Golden Bay

MetOcean Solutions has recently operationalised a high resolution hydrodynamic model for Tasman and Golden Bay, New Zealand.

The underlying forecast data is produced by a state-of-the-art unstructured hydrodynamic model (SCHISM), with offshore 3D boundary conditions sourced from a 3-km ROMS implementation of the central NZ region.  This new capability was developed as part of the Sustainable Seas Project together with the  Cawthron Institute and NIWA and will provide valuable information necessary to manage contamination risk in the aquaculture industry and beach water quality forecasts relevant to regional councils and recreational beach users.

General Manager MetOcean Solutions Dr Brett Beamsley says MetOcean Solutions’ science team has many years of experience with the SCHISM model (previously SELFE); applied primarily in high value consultancy services or research projects, with the unstructured domain capability key to representing complex nearshore bathymetries in a computationally efficient manner.

“This particular project has leveraged the strong scientific capabilities in all three research partners (NIWA, Cawthron and MetOcean Solutions) and illustrates what can be achieved when working together collaboratively.”

"SCHISM is a valuable addition to our operational hydrodynamic forecast system,” says MetOcean Solutions’ physical oceanographer Phellipe Couto. “It allows our model applications to account for an even better representation of topographic features (e.g. islands, embayments, navigation channels and tidal inlets) and engineering structures (e.g. ports and breakwaters) that pose critical aspects in the modulation of the hydrodynamic regime surrounding nearshore and coastal waters.

“In practical terms, this enable us to resolve multi-scale geophysical processes such as tides, river plume dispersion and storm surge with an extra degree of accuracy and therefore provide better forecast solutions to the end user.

“The impact of storm surges on coastal areas has become highly topical particularly in the last year and the rapid deployment of this type of operational modelling infrastructure has the potential to more accurately predict coastal nearshore water levels.

SCHISM model grid resolution from approximately 10 m nearshore to 1.5 km offshore.

SCHISM model grid resolution from approximately 10 m nearshore to 1.5 km offshore.

“In this particular project, we developed a model grid with resolution varying from 10 m in the nearshore to approximately 1.5 km offshore, defining estuaries, intertidal areas, channels, streams, major rivers and relevant beaches. The model is a full 3-dimensional implementation with atmospheric and oceanic initial and boundary conditions provided by high resolution in-house models developed for the Central New Zealand oceanic domain encompassing North and South Islands’ coastal areas around the Cook Strait. We also included fluvial discharges from 11 different rivers forecasted by NIWA’s hydrological modelling capability (TOPNET) as an important forcing to our model.”

“SCHISM presents a powerful new capability for Metocean Solutions in high resolution operational coastal hydrodynamics,” says MetOcean Solutions’ Development Manager Dr Tom Durrant. “This is the first of several planned implementations.”

The project ‘Near real-time forecasting using operational oceanographic forecasting of contamination risk to reduce commercial shellfish harvest and beach closures’ is a collaborative effort of experts from the Cawthron Institute, NIWA and MetOcean Solutions. A project to build connected land-river-sea models and provide a timely risk assessment of contamination to beaches and shellfish growing areas. For more information on Sustainable Seas National Science Challenge click here.

The SCHISM model for Tasman and Golden Bay is freely available at MetOceanView.

For more information visit www.metoceanview.com or contact us at enquiries@metocean.co.nz


MetOcean Solutions, BENTOS and OMC International at the AAPA Convention 2018 in Valparaiso, Chile.

At the 107th American Association of Port Authorities Annual Convention next week, MetOcean Solutions together with recognised world-leader in real time under keel clearance management technology, OMC International, and local partner BENTOS will be presenting tailored solutions designed to increase safety and efficiency of marine operations.

“Together we have a skill set that allows us to provide comprehensive services, maximising the benefits to ports and harbours,” says Sébastien Boulay, MetOcean Solutions’ Business Development Scientist.

“The environmental conditions met by the ports along the Chilean coast are very similar to those in New Zealand. Our expertise of the oceanic conditions and their operational impact in the Southern Pacific, brought by decades of studying the New Zealand and Australia wave climates, is now available to the maritime industry in Chile for those willing to improve their operational safety and efficiency.”

The APPA Annual Convention is the largest port event in the Americas and this year is hosted by Port of Valparaíso and American Association of Ports Authorities, an alliance of ports from Canada, the Caribbean, Latin America and the United States. After several editions, the event returns to Latin America and for the first time it is held in South America on 7-10 October in Valparaíso, Chile, gathering key worldwide industry leaders to discuss the main port projects.

Click here for more information on the convention.



$11.5 million grant to help safeguard New Zealand’s blue economy

A new research project spearheaded by MetService’s oceanography division, MetOcean Solutions will shed new light on the performance of New Zealand’s oceans to support the seafood sector.

The Moana Project was today awarded $11.5 million over five years from the Government’s Endeavour Fund.

MetService Chief Executive Officer Peter Lennox says the grant is an endorsement of the capability and expertise that exists within MetService, and the contribution the State-owned enterprise is continuing to make in advancing the knowledge of New Zealand industry and communities.

General Manager MetOcean Solutions Dr Brett Beamsley says there is a significant lack of knowledge about our marine environment despite the ocean providing vital social, cultural, economic and environmental benefits for New Zealanders.

“As a marine nation, New Zealand derives wealth and wellbeing from the ocean and yet, our oceans are very poorly understood.

“Our seafood sector alone is worth $4.18b annually to New Zealand’s economy and its resources are directly threatened by rising ocean temperatures and marine heatwaves.

“To safeguard these benefits for future generations we need to understand how our marine environment works so we can better manage our resources in a time of rapid ocean warming.

“This project will combine Māori knowledge, seafood sector data, cutting-edge ocean sensing, and advanced numerical modelling to provide a reliable ocean forecast system to support marine industries.”

The proposal was led by MetOcean Solutions’ Chief Scientist Professor Moninya Roughan who says: “The Tasman Sea is warming at one of the fastest rates on Earth, four times the global average, yet we currently have limited ability to comprehensively measure, monitor and predict the state of New Zealand’s oceans.

“Our marine industries are operating in the dark but through the Moana Project, all that will change.

“This programme will create a new, dynamic and more integrated marine knowledge base - reducing uncertainty, maximising opportunity and preparing for future ocean changes.”

The Moana Project is a cross-institutional programme involving all the oceanographic research organisations in New Zealand, collaborating with international experts and supported by a wide range of end-users in industry and government.

Professor Roughan says: “We are partnering with the seafood sector to develop a low-cost ocean sensor that will revolutionise ocean data collection. The sensors will be deployed throughout New Zealand’s exclusive economic zone with support from the commercial fishing sector.

“Through a research partnership with the Whakatōhea Māori Trust Board, we expect the project to  facilitate the exchange of oceanographic knowledge between Te Ao Māori and western science, and empower engagement in coastal management and policy fora.”

Research organisations involved include MetOcean Solutions, the Cawthron Institute, NIWA, and Victoria University of Wellington, Auckland, Waikato, and Otago Universities. The team will collaborate with international experts from Australia (the University of New South Wales), and the United States. 

In addition, the Moana Project has support from technology partners (including ZebraTech) and a wide range of ocean-information end-users, including the New Zealand Defence Technology Agency, the NZ Seafood sector (including Seafood NZ, Paua Industry Council, Deepwater Group, NZ Rock Lobster Industry Council, Terra Moana), the Ministry for Primary Industries and Regional Councils.  

MetOcean Solutions was fully acquired by State-owned Enterprise MetService in September 2017.

For more information, contact Deborah Gray, Communications Manager at deborah.gray@metservice.com or by calling +64 027 3700 700.

 

About the Moana Project

The seafood sector brings $4.18B to New Zealand annually. The resources that the sector depends on are threatened by increasing ocean temperatures. Thermal stress is one of the greatest threats to aquaculture and above average ocean temperatures are also impacting deepwater fisheries (e.g. Hoki). New Zealand has recently experienced its worst marine heatwave on record, yet nothing about these events is known.

This project will vastly improve understanding of coastal ocean circulation, connectivity and marine heatwaves to provide information that will support sustainable growth of the seafood industry (Māori, fisheries and aquaculture). Project partners will apply the internet of things concept to develop a low-cost ocean temperature profiler that will be deployed by the fishing communities ‘on all boats, at all times’. New Zealand’s first open-access ocean forecast system will be delivered by developing new ocean circulation models using a combination of advanced numerics, modern genomics and data from our smart ocean sensors.

The project will investigate the drivers and impacts of marine heatwaves so that they can be predicted, and investigate ocean transport pathways and population connectivity of kaimoana species. This project will provide a step-change in the oceanic information available to the seafood sector and the broader community, accessible through the open-access user-friendly datasets and tools developed.

This information will help the New Zealand seafood sector retain its competitive edge in a rapidly changing ocean impacted by marine temperature extremes and shifting currents. Project partners will build bridges to ensure this new knowledge informs regional marine policy and management.

This project is anchored in mātauranga Māori through the partners’ relationship with Whakatōhea, facilitating exchange of oceanographic knowledge between Te Ao Māori and western science and serve as an exemplar for other coastal iwi.

 About MetService

MetService is New Zealand’s National Meteorological Service. MetOcean Solutions was fully acquired by State-owned Enterprise MetService in September 2017.

As a State-Owned Enterprise its core purpose is to protect the safety of life and property in New Zealand while operating as a commercial business. MetService recently emerged as one of the highest rated agencies in Colmar Brunton’s annual survey of reputation in the public sector.  http://www.colmarbrunton.co.nz/opinion-does-our-public-sector-measure-up/



Dr Alexis Berthot as MetOcean Solutions’ Marine Project Consultancy Manager

MetOcean Solutions has appointed Dr Alexis Berthot as its new Marine Project Consultancy Manager. In this role, Alexis will manage high value scientific consultancy services, leading a team of expert scientists with vast oceanography experience.

AB_1.JPG

“I am really excited about the opportunities that lie ahead,” says Alexis. “Together with the Meteorological Service of New Zealand (MetService) and MetraWeather, MetOcean Solutions has strengthened its collaboration with external partners, building a joint effort to provide integrated  solutions to our clients, I am really looking forward to facilitate this initiative in the marine project consultancy space.”

“MetOcean Solutions is an unique, amazing group of people with not only a vivid passion for science, the ocean and the weather, but also with a strong sense of teamwork, striving for collective achievements. It is a privilege to be part of this team. ”

“Having scientific research, project consulting and operational forecasting teams working closely together is a highly successful structure that promotes the sharing of expertise across the MetOcean group and provides scientifically robust solutions for a whole spectrum of projects.”

Over the last year Alexis has been representing MetOcean Solutions in Australia, looking after the company's Australian clients and providing technical leadership to a wide range of coastal and maritime engineering projects.

Originally from France and passionate about the ocean, Alexis’ academic and professional background is in physical oceanography and coastal science. Following an MSc in Marine Environmental Sciences from the University of Marseille, France, he completed a PhD in Physical Oceanography at the University of Western Australia. He has worked in coastal and ocean research and engineering consultancy for more than 15 years, as a principal numerical modeller, technical lead or project director.

Alexis can be reached at a.berthot@metocean.co.nz. For more information on MetOcean Solutions’ scientific consultancy services, contact us at enquiries@metocean.co.nz.

MetOcean Solutions’ wavespectra library finalist for New Zealand Open Source Awards

MetOcean Solutions has been announced as a finalist in the 2018 New Zealand Open Source Awards. The nomination is for the company’s open source library for processing ocean wave data, released earlier this year (more information here).

"We are very proud to be nominated for this Award," says Dr Brett Beamsley, General Manager MetOcean. “We leverage from open source initiatives in our daily operations. It is great to contribute back to the scientific community, strengthening ocean scientists collaboration.”

“Our Wavespectra library is a powerful collection of tools which was created through the collaborative efforts of our science team, following their years of dealing with ocean wave spectral data.”

A sea state can be thought of as the combination of many different wave components, each of which with its own frequency and direction. The ocean wave spectrum (bottom panel) describes the relative amount of energy in each of these different wave components. Wavespectra allows easily converting multiple spectra into known statistical wave parameters such as significant wave height (top panel).

A sea state can be thought of as the combination of many different wave components, each of which with its own frequency and direction. The ocean wave spectrum (bottom panel) describes the relative amount of energy in each of these different wave components. Wavespectra allows easily converting multiple spectra into known statistical wave parameters such as significant wave height (top panel).

The Open Source Awards recognises outstanding work done with free and open source software and the artistic, scientific and social outcomes it delivers in New Zealand. The 2018 awards will look at the successes over the last two years.

MetOcean Solutions’ Wavespectra library is one of four finalists in the ‘Open Source use in Science’ category.

Senior Physical Oceanographer Dr Rafael Guedes says Wavespectra is a library for dealing with multi-dimensional ocean wave spectra data with the code focused on speed and efficiency for large spectral datasets, and is of value to scientists, students and consultants.

“It provides several methods for assimilating and processing wave spectra into simplified statistical wave parameters. By making this library freely available, we recognise the value of open sourcing, encouraging researchers to become involved, further develop and improve the code.”

For more information about MetOcean Solutions’ Wavespectra, the documentation is available at wavespectra.readthedocs.io/en/docs/ and the GitHub repository at github.com/metocean/wavespectra.

The winners of the 2018 New Zealand Open Source Awards will be announced on 23rd October 2018.

Read more about the nomination on the New Zealand Open Source Awards website.

MetOcean Solutions is a division of state-owned enterprise, Meteorological Service of New Zealand (MetService). MetService is New Zealand’s national weather authority, providing comprehensive weather information services, to help protect the safety and well-being of New Zealanders and the economy.

Meet us at New Zealand Seafood Industry Conference & Technical Day

This week, Prof Moninya Roughan is presenting the Moana Project at New Zealand Seafood Industry Conference & Technical Day in Wellington.

“NZ has recently experienced the worst marine heatwave on record, yet we know almost nothing about the magnitude and dynamics of the event, let alone the drivers and impacts,” says Prof Roughan. “Ocean circulation drives the transport of larvae, determines population connectivity and impacts fisheries recruitment, all of which are being impacted by ocean warming and changes in circulation patterns.”

“The comprehensive understanding of our marine environment, and the increased capability in ocean hydrodynamic observing and modelling, will help us evaluate threats and better manage fisheries, aquaculture, and the wider marine environment, and improve marine biosecurity, contributing to future-proofing our valuable seafood industries in the face of environmental change.”

The presentation on 'Ocean circulation, marine heatwaves and New Zealand seafood' discusses our understanding of NZ’s ocean circulation, the lack of fundamental knowledge of complex ocean dynamics, and the drivers and impacts of marine heatwaves.

New Zealand Seafood Industry Conference & Technical Day, hosted by Seafood New Zealand, is being held 1-2 August at Te Papa, Wellington. The conference is build around the theme 'Our people, our promise', representing an opportunity to discuss sustainability, innovation and environmentally responsible practices in the seafood industry.

For more information, visit the conference website: www.seafood.co.nz/conference-2018

Meet us at the NZ Marine Sciences Society Conference

MetOcean Solutions will be at the New Zealand Marine Sciences Society Annual Conference in Napier this week.

At the conference, MetOcean Solutions Project Manager Dr Brett Beamsley will present 'Near real-time forecasting of contamination risks to shellfish harvests and beaches' in the ‘Innovating through Technology’ session. This talk presents results of a research program involving Cawthron, NIWA and Metocean Solutions that contributes to the National Science Challenges through the Sustainable Seas – Valuable Seas research program. The goal of the project is to develop and supply near real-time forecasts of coastal water quality by combining catchment models with a high-resolution coastal hydrodynamic model to forecast contamination risk. Understanding the risk profile for beaches and aquaculture areas will allow better management of these valuable assets, leading to safer recreational use and increased productivity respectively.

Example of particle tracking simulation using MetOceanTrack.

Example of particle tracking simulation using MetOceanTrack.

In the ‘Special Session: Marine Biosecurity on the Frontline’, Brett will present 'Understanding the spread of nonindigenous species', showing MetOceanTrack, an interactive application that has been developed with the Ministry for Primary Industry to model the potential spread of an organism or contaminant around the coastline of New Zealand. The application integrates a particle tracking model that simulates an array of biological responses (die off, life stages, etc.) within both 3-dimensional regional and local scale hydrodynamics, represented by a 10-year hindcast.

Bathymetry of the Waikato Coastal Marine Area (east and west)

Bathymetry of the Waikato Coastal Marine Area (east and west)

In addition, Oceanographer Dr Sarah Gardiner will present ‘Habitat mapping for the Waikato Region Coastal Marine Area: Bathymetry and substrate type’ in the ‘State of the Marine Environment’ session. Effective management of coastal resources relies on an understanding of the state of, and the impact of pressures on, the coastal marine area. This study summarises the state of knowledge of seabed habitats within the Hauraki Gulf and the comparatively sparsely studied Waikato Coastal Marine Area west coast, to provide a single habitat and bathymetry resource for the entire Waikato coast (east and west). The bathymetric and substrate data have been used to identify what type of ecological communities are likely to be present, especially ecologically valuable areas.

The conference, which is being held 3-5 July at the Napier War Memorial Conference Centre, has as its theme ‘Weaving the Strands' - drawing together data, disciplines, and perspectives to tell the New Zealand marine story.

For more information, visit the conference website at www.nzmss2018.co.nz or contact us at enquires@metocean.co.nz