GOV-ST III

ESA HQ, Paris, 14-18 November 2011

Activities of the Coastal Ocean and Shelf Seas Task Team

Pierre De Mey, LEGOS/U. ToulouseVilly Kourafalou, RSMAS/U. Miami

COSS-TT

(CSIRO) (OSU)

Oregon CTZSST

24 Aug 2003

Coastal ocean specifics

• Focus: shelf break exchanges, shelf dynamics, coastal current & associated (sub-)mesoscale

• Influence of coastal ocean processes felt far beyond shelf break, overlaps & interacts with open ocean dynamics

• Shelves mostly influenced by tides and atm forcing + fast propagating events

• Specific tools: downscaling/b.c.s, free-surface HF, fronts, data assimilation adapted to anisotropic/coupled dynamics

COSS-TT Talk outline

• TT objectives, incl. Monday discussion topics• Current activities• January 2012 workshop• Quick application examples

COSS-TT GOV Coastal Oceans and Shelf Seas Task Team

• The Coastal Ocean and Shelf Seas Task Team (COSS-TT) continues the action of the GODAE Coastal and Shelf Seas Working Group (2006-2009)– De Mey, P., and R. Proctor, 2009 : Assessing the value of GODAE products

in coastal and shelf seas. Editorial, Special Issue of Ocean Dynamics, 2007 GODAE Coastal and Shelf Seas Workshop, Liverpool, UK. Ocean Dynamics, 59, 1–2, DOI 10.1007/s10236-008-0175-0.

– De Mey, P., P. Craig, F. Davidson, C. A. Edwards, Y. Ishikawa, J. C. Kindle, R. Proctor, K. R. Thompson, Jiang Zhu, and the GODAE Coastal and Shelf Seas Working Group (CSSWG) community, 2009 : Applications in coastal modelling and forecasting. Oceanography Magazine, 22, 3, 198-205.

• The main goal of the TT is to work in coordination with the GOV-ST and GOOS towards the provision of a sound scientific basis for sustainable multidisciplinary downscaling and forecasting activities in the world coastal oceans.

• The strategic goal of the TT is to help achieve a seamless framework from the global to the coastal/littoral scale.

• The TT was created in 2009 but several key activities only started this year. The first international TT workshop is scheduled in Jan 2012 in Miami.

COSS-TT COSS-TT Objectives as per workplan

1. Review ongoing coastal ocean forecasting projects in the world coastal oceans, with a particular focus on model assessment;

2. Define and implement an “adequate level” of international scientific coordination between coastal ocean forecasting projects, with the main goal of advancing science in support of coastal ocean forecasting, but considering scientific as well as operational/applicative objectives;

3. Discuss linkages and establish a common framework that can be communicated to funding agencies with the goal of establishing funded pilot projects;

4. Define the links with GOV, and in particular the steps to be taken to enhance the added value of GOV for coastal ocean forecasting projects, and of coastal ocean forecasting projects for GOV.

COSS-TT Current TT membership

ContactInstitution / Representation / Projects Country

Barth, Alexander U. Liège / GHER EU-BChassé, Joël DFO / St Lawrence-Newfoundland CANCraig, Peter CSIRO / ROAM / CLAM-TC AUSDe Mey, Pierre CNRS / LEGOS / SAF-COSS EU-FDumas, Franck IFREMER / Previmer EU-FHe, Ruoying NCSU and WHOI USAHertzfeld, Mike CSIRO / ROAM / CLAM-TC AUSHirose, Naoki Kyushu U. JPNJianping, Gan Hong Kong U. of S&T CN

Kourafalou, VillyU. Miami / RSMAS / NOPP GODAE-HYCOM USA

Kurapov, Alexander Oregon State U. / COAS USAOey, Leo U. Princeton / POM USAPatchen, Richard NOAA / NOS USAPinardi, Nadia U. Bologna EU-IRichman, Jim NRL / SSC USASoares, Ivan ATLANTIS / REMO BRZhu, Jiang China Marginal Seas CN

Not final – new members considered, TT to be updated following workshop

COSS-TT What we try to achieve

• The main objective of the TT is more the scientific coordination of (ongoing) coastal ocean forecasting systems (COFS) than a science forum as the previous CSSWG.

• We try to gather people who are good scientists, who are directly or closely associated with the development of COFS, and who can commit (along with their teams) to homework decided together at TT workshops.

• In the TT membership, we favor coastal systems with clear objectives and calendar. We will discuss linkages between projects on the basis of common objectives, as well as the possibility of pilot projects involving several groups.

• The downstream/applicative aspects are important for us insofar as they open new fields for science. Also it is important to bridge the gap between funded academic research (mainly from government funds) and applications suitable for the industry.

COSS-TT Topics of Monday discussion

• What specific focus should this group have? Not just one – – R&D– Aim at determining “best” practices, “what works”– Try to get the most advanced teams to collaborate weo

• Coastal and shelf seas DA– More difficult than in the open ocean– However DA framework can be used for other purposes than DA (validation, error

bars via ensemble fcst, array design, sensitivity, etc.)

• Drivers analogous to GHRSST and ARGO for GODAE? Challenges – – Rather short term – 2013/2014– Prepare for SWOT, need for complementary in situ observations (HF radars, coastal

observatories, cal/val sites, etc.)– Evaluation of coast-specific altimetry products (as 1st step)– Improving regional atmospheric forecasts (Gulf of St Lawrence), coupled modelling– Assessment strategies, error bars

• What can we do with the available observations? (often lacking)– Use of large-scale products: i.c.s, b.c.s, assimilation (e.g. scale-selective)– Need for data differs in shelves vs. deep areas– Matching model & forcing resolutions w/ observations & applications

• Level of interdisciplinarity• Outreach

COSS-TT Two key areas of activity as per workplan

• Convene co-sponsored forums to discuss “targeted” science issues

• Establish community links between coastal ocean forecasting projects with the objective of advancing science in support for coastal forecasting

next slides

COSS-TT Targeted science

• Coastal ocean science (phy, phy/bio)– Multidisciplinary mesoscale and sub-mesoscale shelf break exchanges, shelf

dynamics, connectivity, coastal currents, waves, transport of land based waters, nutrients, sediments and pollutants, topographic controls on circulation and exchange and air-sea interaction.

– The influence of coastal ocean processes is felt far beyond shelf break, thus interacting with open ocean dynamics and controlling the connectivity of remote ecosystems.

• R&D – Downscaling from larger-scale models– Assessment of model errors, e.g. metrics, Ensemble modelling– Impact of observations, array design, assessment of observational errors– Enhancements to predictability.

• Application-targeted science: linking applications with underlying predictable variables (+ stating desirable prediction ranges and accuracy)– HF sea level: e.g. storm surges– Surface currents, nearshore currents: e.g. maritime safety, oil industry,

nuclear industry, environmental protection– Temperature, density, vorticity: e.g. fisheries, aquaculture, sonar prediction

COSS-TTArea 1. Convene co-sponsored forums to discuss targeted science issues• Activity continuous since 2006

• Organised by GODAE CSSWG: (up to Nov 2008)– Beijing, China, Oct 2006: “Coastal and regional applications of GODAE”

(session in GODAE Symposium “GODAE Symposium on Ocean Data Assimilation and Prediction in Asia-Oceania”)

– POL, Liverpool, UK, Oct 2007: “Assessing the value of GODAE products in coastal and shelf seas” (workshop)

• Ocean Dynamics special issue (Vol. 59, Feb 2009)

• Organised by GOV COSS-TT: (starting Dec 2008)– AGU Fall Meeting 2008, San Francisco, USA, Dec 2008: “Advances in

prediction capabilities of interdisciplinary nested models in coastal and shelf seas” (1 oral session + posters)

– Ocean Sciences Meeting 2010, Portland, USA, Feb 2010: “Advances in Coastal Ocean Prediction: Nested Modeling” (2 oral sessions + posters)

– Ocean Sciences Meeting 2012, Salt Lake City, USA, Feb 2012: “Advances in Coastal Ocean Modeling, Analysis, and Prediction” (3 oral sessions + posters)

COSS-TTArea 2. Establish community links

• Activity mostly started this year

• Coordination workshops– First international coordination workshop, U. Miami, USA, Jan 2012 next

slides– Second workshop before GOV review

• PDM presented the TT at Hamburg symposium on the Future of Operational Oceanography (FutOOre, 25-27 October 2011)– Discussions regarding EU actions linked w/COSS-TT, e.g. affiliated EU group– Two failed attempts submitting a COST-ESF action for a network, with

funds to meet (2010, 2011)– Ongoing discussions with EuroGOOS (Dahlin, Gorringe) on creating a

Coastal Modelling WG linked with the COSS-TT making progress

COSS-TTFirst international coordination workshop (ICW-1)U. Miami, USA, 10-12 Jan 2012

• 3 days

• Announcements: 1st May 10; 2nd + registration Oct 10 TT, GOVST,

invitees

• Particular focus on model assessment for this workshop

• Membership can evolve following workshop

COSS-TT Workshop agenda

Mostly scientific coordination:• Review ongoing (national) coastal ocean forecasting activities

– People to represent more than their teams: national/regional activities– For each system, provide:

• Discuss good practices & common strategies – in particular re: model assessment & error estimates, tools (model, nesting, DA)– White Paper

• Identify the objectives we have in common; discuss homework and collaboration between projects on that basis– Aim at starting pilot projects involving several groups (difficult within 2 years)

• Discuss use of altimetry in coastal ocean systems– Short-term step: evaluation of dedicated products: PISTACH, COASTALT, CTOH– Perspective of SWOT: HR/HF modelling, complementary in situ observations

• Examine linkages with regional GOOS & PICO

System ObjectivesCalendarProducts

+ Issues

Assessment strategies

+ Issues

Use of large-scale products

+ Expectations,Issues

Applications

+ Issues

COSS-TT

NEMO :: BISCAY 21/01/2008(MERCATOR+LEGOS, Quattrocchi et

al.)

SIROCCO 3DFD :: BOB21/01/2008

(LEGOS, Ayoub et al.)

• Specific response on the shelf (intense, faster, small-scale patches)• Specific response over the abyssal plain (weaker, slower, filament-like)• (replace “response” by “errors” above, given the specific error source)• Use error proxies to guide data collection in coastal regions

Community assessment of model error in the BoB: ensemble-based error estimates

SST Ensemble stdev(°C) in response to wind uncertainties

Representer matrix eigenspectrumRECOPESCA fishing net array(Lamouroux, Charria et al.)

(theory: Le Hénaff and De Mey, 2009)

Obs noise floor(can be correlated)

31 d.o.f.’s ofprior errordetectable

above noise floor

MARS3D :: MANGA 15/01/2008(IFREMER+ACTIMAR, Heyraud et

al.)

COSS-TT ICW-1 attendees – current status

COSS-TT/Contact Institution / Representation / Projects Country ICW-1

Ayoub, Nadia CNRS / LEGOS / BoB F OK Chao, Yi JPL / ROMS / SWOT USA OK Chassé, Joël DFO / St Lawrence-Newfoundland CAN TT, tbc (or sbdy else) Cirano, Mauro REMO BR TT, Likely De Dominicis, Michela INGV / NEMO I OKDe Mey, Pierre CNRS / LEGOS / BoB / SWOT F TT, OK DiGiacomo, Paul NOAA / PICO / Patrons Group USA OKDombrowsky, Eric MERCATOR Océan F TbcHalliwell, George NOAA / AOML USA OK He, Ruoying NCSU and WHOI / ROMS USA TT, OK Herzfeld, Mike CSIRO / ROAM / CLAM-TC AUS TT, OK Hirose, Naoki Kyushu U. JPN tbcKourafalou, Villy U. Miami / RSMAS / NOPP GODAE-HYCOM USA TT, OK Le Hénaff, Matthieu U. Miami / RSMAS / NOPP GODAE-HYCOM USA OK O’Dea, Enda Met Office UK OK (or sbdy else) Oddo, Paolo INGV / NEMO / Adriatic I OK Ozgokmen, Tamay U. Miami / GRI USA OK(?)Patchen, Richard NOAA / NOS USA TT, OK(?) Pavanathara, Francis INCOIS / INDOFOS / HYCOM / ROMS IN OK Pinardi, Nadia U. Bologna / NEMO / MOON I TT, OK Pullen, Julie Stevens Inst. of Tech. USA OK Richman, Jim NRL / SSC USA TT, OK Srinivasan, Ashwanth U. Miami / RSMAS / NOPP GODAE-HYCOM USA OKStanev, Emil HZG (ex GKSS) D OK Usui, Nohirisa MRI-JMA JPN OK(?)Wilmer-Becker, Kirsten GOVPO / Met Office UK OKZhu, Jiang IAP CN Tbc

NCEP USA Tbd • Will recontact people who did not respond + other invitees in the

next days (including MEP-TT chairs, Patrons group)

COSS-TT ICW-1 attendees – current status

COSS-TT/Contact Institution / Representation / Projects Country ICW-1

Ayoub, Nadia CNRS / LEGOS / BoB F OK Chao, Yi JPL / ROMS / SWOT USA OK

Chassé, Joël DFO / St Lawrence-Newfoundland CAN TT, Likely (or sbdy else)

Cirano, Mauro REMO BR TT, Likely De Mey, Pierre CNRS / LEGOS / BoB / SWOT F TT, OK DiGiacomo, Paul NOAA / PICO / Patrons Group USA OK(?) Halliwell, George NOAA / AOML USA OK He, Ruoying NCSU and WHOI / ROMS USA TT, OK Herzfeld, Mike CSIRO / ROAM / CLAM-TC AUS TT, OK

Kourafalou, Villy U. Miami / RSMAS / NOPP GODAE-HYCOM USA TT, OK

Le Hénaff, Matthieu U. Miami / RSMAS / NOPP GODAE-HYCOM USA OK

O’Dea, Enda Met Office UK OK (or sbdy else) Oddo, Paolo INGV / NEMO / Adriatic I OK Patchen, Richard NOAA / NOS USA TT, OK(?) Pavanathara, Francis INCOIS / INDOFOS / HYCOM / ROMS IN OK Pinardi, Nadia U. Bologna / NEMO / MOON I TT, OK Pullen, Julie Stevens Inst. of Tech. USA OK Richman, Jim NRL / SSC USA TT, OK

Srinivasan, Ashwanth U. Miami / RSMAS / NOPP GODAE-HYCOM USA OK

Stanev, Emil HZG (ex GKSS) D OK Wilmer-Becker, Kirsten GOVPO / Met Office UK  OK

• Half of current TT did not respond membership v2? (we want an active TT!)

• Recontact people who did not respond + other invitees *very* soon (including MEP-TT chairs, Patrons group)

APPLICATION EXAMPLES

COSS-TTApplication-targeted science: Fukushima-Daiichi radionuclide dispersal

• Simulations with the Toulouse SIROCCO 3DFD at request of IAEA• Some results (e.g. atmospheric deposition) sensitive to large-scale

estimates• Movies available on http://sirocco.omp.obs-mip.fr

Mar 20 – Apr 20:High inputs &

strong confinement due

to rather calm wind conditions

May 1 – May 31:Wind events causing dispersion

Bq/lJune 1 – June 30:Wind events causing dispersion(typhoon Songda)

Time averages of Cs concentration in surface waters

MERCATOR SST

NCOM SST

(Estournel, Ulses, Marsaleix)

COSS-TT

GULF OF MEXICO RESEARCH INITIATIVE: newly funded 8 multi-Institute coastal to regional Consortia

COSS-TTCoastal altimetry - the concept

• Satellite altimetry designed for open ocean• BUT coastal region has enormous strategic

importance• Almost 20 years of data over the coastal ocean

are still unexploited – normally flagged as ‘bad’ in the official products -

but they can be recovered!

• Many possible uses– sea level, currents, waves - not only long term

studies and climatologies, but also specific hazardous events (surges)

– Assimilation into coastal models – Tides

• It is a legitimate component of coastal observing systems

– See Cipollini et al., OceanObs’09, Community White Paper, 2010

Provided by P. Cipollini, NOC

COSS-TT Coastal Altimetry

• Challenging technological aspects – waveform retracking, – path delay correction, – coastal tides– Both validation and applications require exploitation of coastal models & in

situ

• Important climate applications– Long-term aim: global climatology of coastal sea level and waves– Example: Agulhas Current Transport time-series - need coastal altimetry as

current is very close to coast.

• Space Agencies have seed-funded R&D in coastal altimetry– Also preparatory to new missions (CryoSat, AltiKa, Sentinel-3)– COASTALT (2008-2011): ESA-funded, for prototype Envisat Coastal Altimeter

processor, NOC Southampton leading (Paolo Cipollini), 5 EU partners. Prototype data distributed October 2011, see http://www.coastalt.eu

– PISTACH (2007-2011): funded by CNES for Jason-2, Data available via AVISO:

• http://www.aviso.oceanobs.com/index.php?id=1527• International coordination via COASTALT-SWT (Science Working Team),

and Coastal Altimetry Workshops (Silver Spring 2008, Pisa 2008, Frascati 2009, Porto October 2010, San Diego Oct 2011), reporting to OSTST.

Provided by P. Cipollini, NOC

COSS-TTGulf Stream example: Influence of resolution between Altimetry data sets

Coastal Altimetry data points Standard Altimetry data points

COSS-TT

Thank you! pierre.de-mey@legos.obs-mip.fr vkourafalou@rsmas.miami.edu