Assimilation of SWOT simulated observations in a regional ocean model: preliminary experiments

Size: px
Start display at page:

Download "Assimilation of SWOT simulated observations in a regional ocean model: preliminary experiments"

Transcription

1 Assimilation of SWOT simulated observations in a regional ocean model: preliminary experiments Benkiran M., Rémy E., Le Traon P.Y., Greiner E., Lellouche J.-M., Testut C.E., and the Mercator Ocean team. Study done in the framework of a CNES/Mercator Ocean convention, in collaboration with CLS.

2 OSSE experiments Observing System Simulation Experiment To quantify the ability of the system to reconstruct the mean and variability of the «true» ocean (model) depending on the assimilated observations. OSSEs allow an exact comparison with the true observed ocean, but results are dependent of the model configuration (resolution/physic) and the assimilation scheme. Question: Benefit of large swath altimetry to constrain the ocean model mesoscale features? IBI 1/36 forced simulation IBI 1/12 assimilation run observations 2

3 Ocean observation simulation Regional ocean model configuration IBI36: Iberic Biscay and Irish seas NEMO ocean model at 1/36 resolution (~3km) and 75 vertical levels Atmospheric forcing at 3h frequency from ECMWF (Bulk Formulae) Atmospheric pressure forcing Tides (including potential) Open boundaries Simulated observations from IBI36 model outputs: Daily mean AMSRE-AVHRR SST at ¼ In-situ T/S profiles SSALTO/DUACS along track SLA SWOT SLA at 7 km x 7 km IBI SST snapshot 3

4 Simulated SWOT observations Simulated SWOT SSH from IBI 1/36 model outputs in 2009 SSH IBI36 (12/03/2009) 5-day SSH observations (09-14/03/2009) J2, J1n, En SWOT 4

5 Assimilation system configuration Ocean model: IBI configuration at 1/12, 75 vertical levels. Data Assimilation system : SAM2v1 (~SEEK) FGAT ( First Guess at Appropriate Time) IAU : Incremental Analysis Update Deep large scale T,S biais correction from 3Dvar 5-day assimilation cycle SLA observation error : 2cm to 3,5 cm, For SWOT : 1,7cm at minimum. 1-year experiments in 2009 In situ T,S SST J2, J1n, En SLA 5-day SWOT tracks and error level in cm. SWOT SLA RUN0 RUN1 x x x RUN2 x x x x 5

6 Jason 2 and SWOT SLA assimilation score Innovation = Observation Model Forecast Residu = Observation Model analysis Cm Cm J A J N Cm 3.61 Cm J A J N Cm 3.80Cm 6

7 SWOT data assimilation: Impact on SSH True ocean SSH estimation in the western mediterranean sea for the 16 th december 2009 No data assimilation Conventional data assimilated Conventional data assimilated + SWOT 7

8 SWOT data assimilation: Impact on SSH (2) SSH estimation on the 6 th of august 2009 Model Forecasts vs IBI36 (truth) No data assimilation Conventional data assimilated Conventional data assimilated + SWOT True ocean 8

9 Power spectrum of SSH and vorticity No data assimilation Conventional data assimilated Conventional data assimilated + SWOT 9

10 Impact on in situ salinity & temperature data 0 Rms Salinity Innovation -100 RUN2 RUN1 RUN0-200 Rms Temperature 0 Innovation RUN2 RUN1 RUN Depth Depth Depth J A J N J A J N J A J N Depth -500 Depth Psu Depth Deg J A J N J A J N J A J N

11 Conclusion & Perspectives The assimilation system is ready to handle the SWOT data set: Deal with a large number of data ( x10 / conventional SLA with the 7km x 7km subsampling). First results are encouraging. Improvement due to SWOT data assimilation: Better reconstruction of the SSH fields, Analysed fields «smoother» than with the conventional tracks: control of the 2D gradients in SSH? Positive impact on the in situ T/S profiles: correct vertical projection. Further investigation of the physical 3D field reconstruction by comparison with the true ocean: SSH reconstruction at different scales, velocity field estimation (and w for biology), improvement of surface tracer trajectories 11

12 Conclusion & Perspectives Toward a more realistic configuration: Subsampling strategy depending on the model configuration (superobs,?), 25h mean SLA simulated. Improvement of the observation error simulation and specification: - how to deal with correlated observation errors, - rolling error, - sensitivity tests. A precise error specification is necessary to successfully assimilate the SWOT SLA. Experiment with the Nadir altimeter. 12

13 13

14 SLA observation operator for IBI NEMO configuration The model spatial resolution, coverage and physical parameterizations largely differ from one system to an other : the model SSH represents different physical processes to take into account the model observation operator and error specification. Observation operator for the AVISO along track SLA SLA model = SSH SSH tide 25h IB 25h LargeScaleFilter( HBar 24h 21days) MDT HBar Data treatment Tide removed IB using daily atm. pressure (ECMWF) MOG2D with 6h frequency forcing MOG2D: Barotropic ocean model simulating the high frequency barotropic response of the ocean to the atmospheric forcings (wind and pressure). 14

15 Error specification in the DA system Error SLA = instrumental error + representativity error + MDT error Instrumental error : 2 cm (Jason, Topex), 3,5 cm (Ers, Envisat) and 5,5 cm for Envisat on its new orbit. Representativity error : error due to missing physic in the model compared to the observation content. It depends on the model configuration: spatial resolution, frequency of the atmospheric forcing, tides MDT error - - = Instrumental error, inflated in shallow and coastal areas Representativity and MDT error The observation covariance matrix R is diagonal and constant in time 15

16 Snapshot of the vorticity field la vorticité relative de surface pour la 15/12/2009 : à gauche pour l expérience RUN0, au milieu l expérience RUN1 et à droite pour l expérience RUN2. 16

17 SLA Increment: RUN1 vs RUN2 Conventional data assimilated Conventional data assimilated + SWOT 17

18 Mercator Ocean: French Operational Oceanography Centre 5 shareholders CNRS, IFREMER, IRD, Météo-France, SHOM and CNES as a key-partner. Missions: Develop and operate systems able to describe, monitor and forecast the global ocean from the deep ocean to the surface. Distribute ocean products and give expertise to users Coordinator of the MyOcean2 project involving ocean operational monitoring & forecasting centers and partners from the maritime community in Europe. Mercator Ocean Centre Ramonville St Agne Toulouse, France 18

19 Outline Ocean observation simulation Ocean model and assimilation system Experimental setup : Observing System Simulation Experiment Preliminary results Perspectives SWOT KaRIN instrument draft ( Study done in the framework of a CNES/Mercator Ocean convention, in collaboration with CLS. 19

20 Mercator Ocean: French Operational Oceanography Centre 5 shareholders CNRS, IFREMER, IRD, Météo-France, SHOM and CNES as a key-partner. Mercator Ocean produces in real time 3D ocean analysis and forecasts at regional to global scale constrained by in situ temperature and salinity observations and remote sensed observations (SST, SLA). Applications range from initialization of seasonal forecast from oceanatmosphere coupled model to regional model boundary forcing, ocean reanalysis... SATELLITE observations SSALTO IN SITU observat ions CORIOLIS SLA, SST MODELING ASSIMILATION (control vector {Hbar,T, S, U, V}) è Hindasts & forecasts MERCATOR T, S profiles 20

Preparation of the SWOT Mission

Preparation of the SWOT Mission Preparation of the SWOT Mission M.Benkiran, E. Greiner, E. Rémy, P.Y. Le Traon and the Mercator Ocean team. Study done in the framework of a CNES/Mercator Ocean convention, in collaboration with CLS. GODAE

More information

The impact of the assimilation of SLA along track Observation with high-frequency signal in IBI system

The impact of the assimilation of SLA along track Observation with high-frequency signal in IBI system The impact of the assimilation of SLA along track Observation with high-frequency signal in IBI system M. Benkiran, C.Dufau (CLS) and Mercator Ocean Team http://www.mercator-ocean.fr mbenkiran@cls.fr Context

More information

Regional High Resolution Reanalysis over European North East Shelf domain

Regional High Resolution Reanalysis over European North East Shelf domain Regional High Resolution Reanalysis over European North East Shelf domain M. Benkiran, E. Greiner (CLS) and Mercator Ocean Team http://www.mercator-ocean.fr mbenkiran@cls.fr 1 Outline REANALYSIS : IBI-1/12,

More information

Ocean currents from altimetry

Ocean currents from altimetry Ocean currents from altimetry Pierre-Yves LE TRAON - CLS - Space Oceanography Division Gamble Workshop - Stavanger,, May 2003 Introduction Today: information mainly comes from in situ measurements ocean

More information

Evolution of the Mercator Océan system, main components for reanalysis and forecast

Evolution of the Mercator Océan system, main components for reanalysis and forecast Evolution of the Mercator Océan system, main components for reanalysis and forecast Y. Drillet, J.M. Lellouche, O. Le Galloudec, M. Drévillon, G. Garric, R. Bourdallé- Badie, C. Bricaud, J. Chanut, G.

More information

OOPC-GODAE workshop on OSE/OSSEs Paris, IOCUNESCO, November 5-7, 2007

OOPC-GODAE workshop on OSE/OSSEs Paris, IOCUNESCO, November 5-7, 2007 OOPC-GODAE workshop on OSE/OSSEs Paris, IOCUNESCO, November 5-7, 2007 Design of ocean observing systems: strengths and weaknesses of approaches based on assimilative systems Pierre Brasseur CNRS / LEGI

More information

The CONCEPTS Global Ice-Ocean Prediction System Establishing an Environmental Prediction Capability in Canada

The CONCEPTS Global Ice-Ocean Prediction System Establishing an Environmental Prediction Capability in Canada The CONCEPTS Global Ice-Ocean Prediction System Establishing an Environmental Prediction Capability in Canada WWOSC 2014 Montreal, Quebec, Canada Dorina Surcel Colan 1, Gregory C. Smith 2, Francois Roy

More information

Improving the initialisation of our operational shelf-seas models

Improving the initialisation of our operational shelf-seas models Improving the initialisation of our operational shelf-seas models Robert King James While, Matt Martin, Dan Lean, Jennie Waters, Enda O Dea, Jenny Graham NPOP May 2018 Contents 1. Recent history developments

More information

Ocean data assimilation for reanalysis

Ocean data assimilation for reanalysis Ocean data assimilation for reanalysis Matt Martin. ERA-CLIM2 Symposium, University of Bern, 14 th December 2017. Contents Introduction. On-going developments to improve ocean data assimilation for reanalysis.

More information

T2.2: Development of assimilation techniques for improved use of surface observations

T2.2: Development of assimilation techniques for improved use of surface observations WP2 T2.2: Development of assimilation techniques for improved use of surface observations Matt Martin, Rob King, Dan Lea, James While, Charles-Emmanuel Testut November 2014, ECMWF, Reading, UK. Contents

More information

E-AIMS. Global ocean analysis and forecasting: OSE/OSSEs results and recommandations

E-AIMS. Global ocean analysis and forecasting: OSE/OSSEs results and recommandations Research Project co-funded by the European Commission Research Directorate-General 7 th Framework Programme Project No. 284391 E-AIMS Euro-Argo Improvements for the GMES Marine Service Global ocean analysis

More information

Implementation of the SEEK filter in HYCOM

Implementation of the SEEK filter in HYCOM Implementation of the SEEK filter in HYCOM P. Brasseur, J. Verron, J.M. Brankart LEGI/CNRS, Grenoble, France HYCOM model SST, SSH, ocean colour Assimilation SEEK filter Y H x f In situ, XBT K x a Real-time

More information

Coastal Data Assimilation: progress and challenges in state estimation for circulation and BGC models

Coastal Data Assimilation: progress and challenges in state estimation for circulation and BGC models Coastal Data Assimilation: progress and challenges in state estimation for circulation and BGC models Emlyn Jones, Roger Scott, Mark Baird, Frank Colberg, Paul Sandery, Pavel Sakov, Gary Brassington, Mathieu

More information

Enhancing predictability of the Loop Current variability using Gulf of Mexico Hycom

Enhancing predictability of the Loop Current variability using Gulf of Mexico Hycom Enhancing predictability of the Loop Current variability using Gulf of Mexico Hycom Matthieu Le Hénaff (1) Villy Kourafalou (1) Ashwanth Srinivasan (1) Collaborators: O. M. Smedstad (2), P. Hogan (2),

More information

Impact of frontal eddy dynamics on the Loop Current variability during free and data assimilative HYCOM simulations

Impact of frontal eddy dynamics on the Loop Current variability during free and data assimilative HYCOM simulations Impact of frontal eddy dynamics on the Loop Current variability during free and data assimilative HYCOM simulations Matthieu Le Hénaff (1) Villy H. Kourafalou (1) Ashwanth Srinivasan (1) George R. Halliwell

More information

Ensemble-variational assimilation with NEMOVAR Part 2: experiments with the ECMWF system

Ensemble-variational assimilation with NEMOVAR Part 2: experiments with the ECMWF system Ensemble-variational assimilation with NEMOVAR Part 2: experiments with the ECMWF system Toulouse, 20/06/2017 Marcin Chrust 1, Hao Zuo 1 and Anthony Weaver 2 1 ECMWF, UK 2 CERFACS, FR Marcin.chrust@ecmwf.int

More information

Sea Ice Forecast Verification in the Canadian Global Ice Ocean Prediction System

Sea Ice Forecast Verification in the Canadian Global Ice Ocean Prediction System Sea Ice Forecast Verification in the Canadian Global Ice Ocean Prediction System G Smith 1, F Roy 2, M Reszka 2, D Surcel Colan, Z He 1, J-M Belanger 1, S Skachko 3, Y Liu 3, F Dupont 2, J-F Lemieux 1,

More information

Ensemble-variational assimilation with NEMOVAR Part 2: experiments with the ECMWF system

Ensemble-variational assimilation with NEMOVAR Part 2: experiments with the ECMWF system Ensemble-variational assimilation with NEMOVAR Part 2: experiments with the ECMWF system La Spezia, 12/10/2017 Marcin Chrust 1, Anthony Weaver 2 and Hao Zuo 1 1 ECMWF, UK 2 CERFACS, FR Marcin.chrust@ecmwf.int

More information

How DBCP Data Contributes to Ocean Forecasting at the UK Met Office

How DBCP Data Contributes to Ocean Forecasting at the UK Met Office How DBCP Data Contributes to Ocean Forecasting at the UK Met Office Ed Blockley DBCP XXVI Science & Technical Workshop, 27 th September 2010 Contents This presentation covers the following areas Introduction

More information

Impact of Argo, SST, and altimeter data on an eddy-resolving ocean reanalysis

Impact of Argo, SST, and altimeter data on an eddy-resolving ocean reanalysis Click Here for Full Article GEOPHYSICAL RESEARCH LETTERS, VOL. 34, L19601, doi:10.1029/2007gl031549, 2007 Impact of Argo, SST, and altimeter data on an eddy-resolving ocean reanalysis Peter R. Oke 1 and

More information

Ocean Monitoring and Forecasting core services,

Ocean Monitoring and Forecasting core services, MY OCEAN Marine Core Service Ocean Monitoring and Forecasting core services, the MyOcean example Pierre BAHUREL MyOcean coordinator Mercator Ocean, France Session 5B "The way forward: delivering societal

More information

WP2 task 2.2 SST assimilation

WP2 task 2.2 SST assimilation WP2 task 2.2 SST assimilation Matt Martin, Dan Lea, James While, Rob King ERA-CLIM2 General Assembly, Dec 2015. Contents Impact of SST assimilation in coupled DA SST bias correction developments Assimilation

More information

PS4a: Real-time modelling platforms during SOP/EOP

PS4a: Real-time modelling platforms during SOP/EOP PS4a: Real-time modelling platforms during SOP/EOP Mistral Tramontane Bora Etesian Major sites of dense water formation Major sites of deep water formation influence of coastal waters Chairs: G. Boni,

More information

Initial Results of Altimetry Assimilation in POP2 Ocean Model

Initial Results of Altimetry Assimilation in POP2 Ocean Model Initial Results of Altimetry Assimilation in POP2 Ocean Model Svetlana Karol and Alicia R. Karspeck With thanks to the DART Group, CESM Software Development Group, Climate Modeling Development Group POP-DART

More information

GOCINO GOCINO. Final Activity Report. GOCE in Ocean Modelling. Specific Support Action. Contract N o SSA5-CT

GOCINO GOCINO. Final Activity Report. GOCE in Ocean Modelling. Specific Support Action. Contract N o SSA5-CT GOCINO Contract N o SSA5-CT-2006-030756 GOCINO GOCE in Ocean Modelling Specific Support Action Final Activity Report Start date of project: 1 June 2007 Date of preparation: 14 March 2010 Project coordinator

More information

Modelling forecast error statistics in the Mercator ocean and sea-ice reanalysis system.

Modelling forecast error statistics in the Mercator ocean and sea-ice reanalysis system. Modelling forecast error statistics in the Mercator ocean and sea-ice reanalysis system. C.E Testut 1, G. Ruggiero 1, L. Parent 1, J.M. Lellouche 1, O. Legalloudec 1, C. Bricaud 1, J. Chanut 1, G. Smith

More information

Global Ocean Reanalysis Simulations at Mercator Océan GLORYS1: the Argo years

Global Ocean Reanalysis Simulations at Mercator Océan GLORYS1: the Argo years Global Ocean Reanalysis Simulations at Mercator Océan GLORYS1: the Argo years 2002-2008 Laurent Parent, Nicolas Ferry and the Mercator Océan team Mercator-Océan, Toulouse, France: http://www.mercator-ocean.fr

More information

Development of a coastal monitoring and forecasting system at MRI/JMA

Development of a coastal monitoring and forecasting system at MRI/JMA COSS-TT and ARCOM Development of a coastal monitoring and forecasting system at MRI/JMA N. USUI, Y. Fujii, K, Sakamoto, H. Tsujino, T. Kuragano & Masa KAMACHI Meteorological Research Institute, Japan Sept

More information

OSE/OSSEs at NOAA. Eric Bayler NOAA/NESDIS/STAR

OSE/OSSEs at NOAA. Eric Bayler NOAA/NESDIS/STAR OSE/OSSEs at NOAA Eric Bayler NOAA/NESDIS/STAR OSE/OSSEs at NOAA NOAA Leadership view: Relatively inexpensive way to: Assess the impact of potential new observations Refine and redirect current observing

More information

QUALITY INFORMATION DOCUMENT For Global Sea Physical Analysis and Forecasting Product GLOBAL_ANALYSIS_FORECAST_PHYS_001_002

QUALITY INFORMATION DOCUMENT For Global Sea Physical Analysis and Forecasting Product GLOBAL_ANALYSIS_FORECAST_PHYS_001_002 QUALITY INFORMATION DOCUMENT For Global Sea Physical Analysis and Forecasting WP leader: GlobalMFC WP05, Eric Dombrowsky, Mercator- Ocean France Issue: 1.2 Contributors : C.REGNIER, J-M. LELLOUCHE, O.

More information

Current status of the remote sensing ocean observing system

Current status of the remote sensing ocean observing system Current status of the remote sensing ocean observing system Pierre-Yves Le Traon Ifremer & Mercator ocean with contributions from G. Dibarboure, Y. Faugere, M.H. Rio, B. Chapron, J. Johannessen, L. Santolieri,

More information

Status and future of data assimilation in operational oceanography

Status and future of data assimilation in operational oceanography Journal of Operational Oceanography, 2015 Vol. 8, No. S1, s28 s48, http://dx.doi.org/10.1080/1755876x.2015.1022055 Status and future of data assimilation in operational oceanography M.J. Martin a *, M.

More information

The impact of the assimilation of altimeters and ASAR L2 wave data in the wave model MFWAM

The impact of the assimilation of altimeters and ASAR L2 wave data in the wave model MFWAM The impact of the assimilation of altimeters and ASAR L2 wave data in the wave model MFWAM Lotfi Aouf 1, Jean-Michel Lefèvre 1 1) Météo-France, Toulouse 12 th Wave Hindcasting and Forecasting, Big Island

More information

Update on Coupled Air-Sea-Ice Modelling

Update on Coupled Air-Sea-Ice Modelling Update on Coupled Air-Sea-Ice Modelling H. Ritchie 1,4, G. Smith 1, J.-M. Belanger 1, J-F Lemieux 1, C. Beaudoin 1, P. Pellerin 1, M. Buehner 1, A. Caya 1, L. Fillion 1, F. Roy 2, F. Dupont 2, M. Faucher

More information

On the impact of the assimilation of ASAR wave spectra in the wave model MFWAM

On the impact of the assimilation of ASAR wave spectra in the wave model MFWAM On the impact of the assimilation of ASAR wave spectra in the wave model MFWAM Lotfi Aouf, Jean-Michel Lefèvre Météo-France, Toulouse SEASAR 2012, 4 th International workshop on Advances in SAR oceanography,

More information

COMBAT CMEMS Service Evolution 2 KOM Visio-conference, 16 April AZTI. Todos los derechos reservados

COMBAT CMEMS Service Evolution 2 KOM Visio-conference, 16 April AZTI. Todos los derechos reservados COMBAT CMEMS Service Evolution 2 KOM Visio-conference, 16 April 2018 INDEX CONTEXT OBJECTIVES TEAM ORGANIZATION IMPACT AND RELEVANCE OF THE PROJECT FOR CMEMS PLAN TO INTERACT WITH TACs AND MFCs CONTEXT

More information

Interannual trends in the Southern Ocean sea surface temperature and sea level from remote sensing data

Interannual trends in the Southern Ocean sea surface temperature and sea level from remote sensing data RUSSIAN JOURNAL OF EARTH SCIENCES, VOL. 9, ES3003, doi:10.2205/2007es000283, 2007 Interannual trends in the Southern Ocean sea surface temperature and sea level from remote sensing data S. A. Lebedev 1,2

More information

HYCOM Caspian Sea Modeling. Part I: An Overview of the Model and Coastal Upwelling. Naval Research Laboratory, Stennis Space Center, USA

HYCOM Caspian Sea Modeling. Part I: An Overview of the Model and Coastal Upwelling. Naval Research Laboratory, Stennis Space Center, USA HYCOM Caspian Sea Modeling. Part I: An Overview of the Model and Coastal Upwelling By BIROL KARA, ALAN WALLCRAFT AND JOE METZGER Naval Research Laboratory, Stennis Space Center, USA MURAT GUNDUZ Institute

More information

Assimilation of satellite altimetry referenced to the new GRACE geoid estimate

Assimilation of satellite altimetry referenced to the new GRACE geoid estimate GEOPHYSICAL RESEARCH LETTERS, VOL. 32, L06601, doi:10.1029/2004gl021329, 2005 Assimilation of satellite altimetry referenced to the new GRACE geoid estimate F. Birol, 1 J. M. Brankart, 1 J. M. Lemoine,

More information

Ocean Forecasting for Australia & New Zealand and Mesoscale Oceanography

Ocean Forecasting for Australia & New Zealand and Mesoscale Oceanography Ocean Forecasting for Australia & New Zealand and Mesoscale Oceanography Andreas Schiller 1 Graham Rickard 2 Gary Brassington 3 1 Centre for Australian Weather and Climate Research; Wealth from Oceans

More information

The MyOcean Service, precursor of the Copernicus Marine Environment Monitoring Service

The MyOcean Service, precursor of the Copernicus Marine Environment Monitoring Service The MyOcean Service, precursor of the Copernicus Marine Environment Monitoring Service P.Y. Le Traon (with many inputs from J. Dorandeu) Mercator Océan Outline Copernicus$Marine$Service$and$Mercator$Ocean$

More information

ERA-CLIM: Developing reanalyses of the coupled climate system

ERA-CLIM: Developing reanalyses of the coupled climate system ERA-CLIM: Developing reanalyses of the coupled climate system Dick Dee Acknowledgements: Reanalysis team and many others at ECMWF, ERA-CLIM project partners at Met Office, Météo France, EUMETSAT, Un. Bern,

More information

The GMES/MyOcean Marine Service and its applications

The GMES/MyOcean Marine Service and its applications The GMES/MyOcean Marine Service and its applications P.Y. Le Traon (Ifremer) P. Bahurel (Mercator Ocean) First BreTel Workshop May 31st, 2012 - St Malo Outline The GMES Marine Service and MyOcean What

More information

The Mediterranean Operational Oceanography Network (MOON): Products and Services

The Mediterranean Operational Oceanography Network (MOON): Products and Services The Mediterranean Operational Oceanography Network (MOON): Products and Services The MOON consortia And Nadia Pinardi Co-chair of MOON Istituto Nazionale di Geofisica e Vulcanologia Department of Environmental

More information

Evaluation of global monitoring and forecasting systems at Mercator Océan

Evaluation of global monitoring and forecasting systems at Mercator Océan Ocean Sci., 9, 57 8, 0 www.ocean-sci.net/9/57/0/ doi:0.59/os-9-57-0 Author(s) 0. CC Attribution.0 License. Ocean Science Evaluation of global monitoring and forecasting systems at Mercator Océan J.-M.

More information

Model and observation bias correction in altimeter ocean data assimilation in FOAM

Model and observation bias correction in altimeter ocean data assimilation in FOAM Model and observation bias correction in altimeter ocean data assimilation in FOAM Daniel Lea 1, Keith Haines 2, Matt Martin 1 1 Met Office, Exeter, UK 2 ESSC, Reading University, UK Abstract We implement

More information

The CNES CLS 2015 Global Mean Sea surface

The CNES CLS 2015 Global Mean Sea surface P. Schaeffer, I. Pujol, Y. Faugere(CLS), A. Guillot, N. Picot (CNES). The CNES CLS 2015 Global Mean Sea surface OST-ST, La Rochelle, October 2016. Plan 1. Data & Processing 2. Focus on the oceanic variability

More information

MERSEA Marine Environment and Security for the European Area

MERSEA Marine Environment and Security for the European Area MERSEA Marine Environment and Security for the European Area Development of a European system for operational monitoring and forecasting of the ocean physics, biogeochemistry, and ecosystems, on global

More information

Decadal Variation of the Geostrophic Vorticity West of the Luzon Strait

Decadal Variation of the Geostrophic Vorticity West of the Luzon Strait 144 The Open Oceanography Journal, 2010, 4, 144-149 Open Access Decadal Variation of the Geostrophic Vorticity West of the Luzon Strait Yinglai Jia *,1, Qinyu Liu 1 and Haibo Hu 2 1 Physical Oceanography

More information

NCODA Implementation with re-layerization

NCODA Implementation with re-layerization NCODA Implementation with re-layerization HeeSook Kang CIMAS/RSMAS/U. Miami with W. Carlisle Thacker NOAA/AOML HYCOM meeting December 6 2005 1 GULF OF MEXICO MODEL CONFIGURATION: Horizontal grid: 1/12

More information

The ECMWF coupled data assimilation system

The ECMWF coupled data assimilation system The ECMWF coupled data assimilation system Patrick Laloyaux Acknowledgments: Magdalena Balmaseda, Kristian Mogensen, Peter Janssen, Dick Dee August 21, 214 Patrick Laloyaux (ECMWF) CERA August 21, 214

More information

Status and future of data assimilation in operational oceanography

Status and future of data assimilation in operational oceanography Status and future of data assimilation in operational oceanography MJ Martin, Met Office, Exeter, UK. M Balmaseda, ECMWF, Reading, UK L Bertino, NERSC, Bergen, Norway P Brasseur, LEGI, Grenoble, France

More information

X-TRACK, A NEW PROCESSING TOOL FOR ALTIMETRY IN COASTAL OCEANS

X-TRACK, A NEW PROCESSING TOOL FOR ALTIMETRY IN COASTAL OCEANS X-TRACK, A NEW PROCESSING TOOL FOR ALTIMETRY IN COASTAL OCEANS L. ROBLOU (1), F. LYARD (2), M. LE HENAFF (2) and C. MARALDI (2) (1) NOVELTIS,Parc Technologique du Canal, 2 Avenue de l Europe, 31520 Ramonville-Saint-Agne,

More information

GREEN Grog : Global Reanalysis of Ocean. biogeochemistry :

GREEN Grog : Global Reanalysis of Ocean. biogeochemistry : Colloque LEFE Clermont-Ferrand, 28-30 mars 2018 GREEN Grog : Global Reanalysis of Ocean biogeochemistry : Isabelle Dadou (LEGOS) Marion Gehlen (IPSL/LSCE) marion.gehlen@lsce.ipsl.fr and the GREEN Grog

More information

Data Assimilation of Argo Profiles in Northwest Pacific Yun LI National Marine Environmental Forecasting Center, Beijing

Data Assimilation of Argo Profiles in Northwest Pacific Yun LI National Marine Environmental Forecasting Center, Beijing Data Assimilation of Argo Profiles in Northwest Pacific Yun LI National Marine Environmental Forecasting Center, Beijing www.nmefc.gov.cn National Marine Environmental Forecasting Center Established in

More information

Presented at the FIG Congress 2018, May 6-11, 2018 in Istanbul, Turkey

Presented at the FIG Congress 2018, May 6-11, 2018 in Istanbul, Turkey Presented at the FIG Congress 2018, May 6-11, 2018 in Istanbul, Turkey Paper ID: 9253 (Peer Review) By: Amalina Izzati Abdul Hamid, Ami Hassan Md Din & Kamaludin Mohd Omar Geomatic Innovation Research

More information

Improved description of the ocean mesoscale variability by combining four satellite altimeters

Improved description of the ocean mesoscale variability by combining four satellite altimeters Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site GEOPHYSICAL

More information

On the role of the GRACE mission in the joint assimilation of altimetric and TAO data in a tropical Pacific Ocean model

On the role of the GRACE mission in the joint assimilation of altimetric and TAO data in a tropical Pacific Ocean model Click Here for Full Article GEOPHYSICAL RESEARCH LETTERS, VOL. 33, L14616, doi:10.1029/2006gl025823, 2006 On the role of the GRACE mission in the joint assimilation of altimetric and TAO data in a tropical

More information

RETRIEVING EXTREME LOW PRESSURE WITH ALTIMETRY

RETRIEVING EXTREME LOW PRESSURE WITH ALTIMETRY RETRIEVING EXTREME LOW PRESSURE WITH ALTIMETRY L. Carrère (1), F. Mertz (1), J. Dorandeu (1), Y. Quilfen (2), Chung-Chi Lin (3) (1) CLS, 8-10 rue Hérmès, 31520 Ramonville St Agne (France) Email:lcarrere@cls.fr

More information

Developing Coastal Ocean Forecasting Systems and Their Applications

Developing Coastal Ocean Forecasting Systems and Their Applications Developing Coastal Ocean Forecasting Systems and Their Applications Xiaochun Wang a,b LASG/IAP, CAS, July 23, 2010 Contributions from: JPL Yi Chao, John Farrara, Peggy Li, Zhijin Li, Quoc Vu, Hongchun

More information

Overview of data assimilation in oceanography or how best to initialize the ocean?

Overview of data assimilation in oceanography or how best to initialize the ocean? Overview of data assimilation in oceanography or how best to initialize the ocean? T. Janjic Alfred Wegener Institute for Polar and Marine Research Bremerhaven, Germany Outline Ocean observing system Ocean

More information

The impact of combined assimilation of altimeters data and wave spectra from S-1A and 1B in the operational model MFWAM

The impact of combined assimilation of altimeters data and wave spectra from S-1A and 1B in the operational model MFWAM The impact of combined assimilation of altimeters data and wave spectra from S-1A and 1B in the operational model MFWAM Lotfi Aouf and Alice Dalphinet Météo-France, Département Marine et Oceanographie

More information

Jerome Bouffard CryoSat Mission Geophysicist

Jerome Bouffard CryoSat Mission Geophysicist Multi-Platform validations of altimetry for monitoring the variability of Coastal fronts: Status and Updates Jerome Bouffard CryoSat Mission Geophysicist Context Applications Conclusions The North Western

More information

Demonstration and Comparison of of Sequential Approaches for Altimeter Data Assimilation in in HYCOM

Demonstration and Comparison of of Sequential Approaches for Altimeter Data Assimilation in in HYCOM Demonstration and Comparison of of Sequential Approaches for Altimeter Data Assimilation in in HYCOM A. Srinivasan, E. P. Chassignet, O. M. Smedstad, C. Thacker, L. Bertino, P. Brasseur, T. M. Chin,, F.

More information

Assimilation of SST data in the FOAM ocean forecasting system

Assimilation of SST data in the FOAM ocean forecasting system Assimilation of SST data in the FOAM ocean forecasting system Matt Martin, James While, Dan Lea, Rob King, Jennie Waters, Ana Aguiar, Chris Harris, Catherine Guiavarch Workshop on SST and Sea Ice analysis

More information

The High Resolution Global Ocean Forecasting System in the NMEFC and its Intercomparison with the GODAE OceanView IV-TT Class 4 Metrics

The High Resolution Global Ocean Forecasting System in the NMEFC and its Intercomparison with the GODAE OceanView IV-TT Class 4 Metrics The High Resolution Global Ocean Forecasting System in the NMEFC and its Intercomparison with the GODAE OceanView IV-TT Class 4 Metrics Liying Wan (Group Leader) Yu Zhang, Huier Mo, Ziqing Zu, Yinghao

More information

A state of the art and user driven Copernicus service Physics and Biogeochemistry

A state of the art and user driven Copernicus service Physics and Biogeochemistry C M E M S P r e s e n t a n d F u t u r e R e q u i r e m e n t s f o r I n - S i t u a n d S a t e l l i t e O b s e r v a t i o n s Antonio REPPUCCI; Pierre Yves LE TRAON Mercator Ocean International

More information

Contribution of future wide swath altimetry missions to ocean analysis and forecasting

Contribution of future wide swath altimetry missions to ocean analysis and forecasting Contribution of future wide swath altimetry missions to ocean analysis and forecasting Antonio Bonaduce 1, Mounir Benkiran 1, Elisabeth Remy 1, Pierre Yves Le Traon 1,2, and Gilles Garric 1 1 Mercator

More information

Ocean Observing System Evaluation

Ocean Observing System Evaluation Ocean Observing System Evaluation Peter R. Oke 1, Magdalena A. Balmaseda 2, Mounir Benkiran 3, James A. Cummings 4, Eric Dombrowsky 3, Yosuke Fujii 5, Stephanie Guinehut 6, Gilles Larnicol 6, Pierre-Yves

More information

On the relative importance of Argo, SST and altimetry for an ocean reanalysis

On the relative importance of Argo, SST and altimetry for an ocean reanalysis Document prepared on February 20, 2007 for the Argo Steering Team Meeting (AST-8), Paris March 7-9 On the relative importance of Argo, SST and altimetry for an ocean reanalysis Peter R. Oke and Andreas

More information

JGOFS Open Science Conference. JGOFS Open Science Conference 5-88 May 2003 Washington, D.C.

JGOFS Open Science Conference. JGOFS Open Science Conference 5-88 May 2003 Washington, D.C. 5-88 May 23 Washington, D.C. Constraining Fluxes at the Top: Advances in Quantifying Air-Sea Carbon Dioxide Fluxes during the JGOFS Decade Speaker: Rik Wanninkhof NOAA/AOML Commentator: Richard A. Feely

More information

OPERATIONAL WAVE FORECASTING FOR TROPICAL CYCLONES CONDITIONS

OPERATIONAL WAVE FORECASTING FOR TROPICAL CYCLONES CONDITIONS OPERATIONAL WAVE FORECASTING FOR TROPICAL CYCLONES CONDITIONS Jean-Michel Lefèvre 1, Lotfi Aouf 1, Pierre Queffeulou 2, Abderrahim Bentamy 2, Yves Quilfen 2 1 Meteo-France, Toulouse, France 2 IFREMER,

More information

Arctic Regional Ocean Observing System Arctic ROOS Report from 2012

Arctic Regional Ocean Observing System Arctic ROOS Report from 2012 Arctic Regional Ocean Observing System Arctic ROOS Report from 2012 By Stein Sandven Nansen Environmental and Remote Sensing Center (www.arctic-roos.org) Focus in 2012 1. Arctic Marine Forecasting Center

More information

Operational systems for SST products. Prof. Chris Merchant University of Reading UK

Operational systems for SST products. Prof. Chris Merchant University of Reading UK Operational systems for SST products Prof. Chris Merchant University of Reading UK Classic Images from ATSR The Gulf Stream ATSR-2 Image, ƛ = 3.7µm Review the steps to get SST using a physical retrieval

More information

Application and improvement of Ensemble Optimal Interpolation on Regional Ocean Modeling System (ROMS)

Application and improvement of Ensemble Optimal Interpolation on Regional Ocean Modeling System (ROMS) Application and improvement of Ensemble Optimal Interpolation on Regional Ocean Modeling System (ROMS) Zhaoyi Wang Guokun Lyu, Hui Wang, Jiang Zhu, Guimei Liu et al. National Marine Environmental Forecasting

More information

Observing the Ocean:

Observing the Ocean: Observing the Ocean: A changing Paradigm A vision for Operational Oceanography James Baker* - Jean-François Minster ** * Chair Goos Committee,, Président CEO Academy of Natural Sciences Philadelphie **

More information

Alexander Barth, Aida Alvera-Azc. Azcárate, Robert H. Weisberg, University of South Florida. George Halliwell RSMAS, University of Miami

Alexander Barth, Aida Alvera-Azc. Azcárate, Robert H. Weisberg, University of South Florida. George Halliwell RSMAS, University of Miami Ensemble-based based Assimilation of HF-Radar Surface Currents in a West Florida Shelf ROMS Nested into HYCOM and filtering of spurious surface gravity waves. Alexander Barth, Aida Alvera-Azc Azcárate,

More information

Adapting NEMO for use as the UK operational storm surge forecasting model

Adapting NEMO for use as the UK operational storm surge forecasting model Adapting NEMO for use as the UK operational storm surge forecasting model Rachel Furner 1, Jane Williams 2, Kevin Horsburgh 2, Andy Saulter 1 1; Met Office 2; NOC Table of Contents Existing CS3 model Developments

More information

Sea level modeling using HYCOM in the bay of Biscay : introduction of atmospheric pressure effects.

Sea level modeling using HYCOM in the bay of Biscay : introduction of atmospheric pressure effects. Sea level modeling using HYCOM in the bay of Biscay : introduction of atmospheric pressure effects. C. Lathuiliere, R. Baraille, L. Pineau-Guillou, Y. Morel 1 Xynthia storm : February 28 th, 2010 Measurements

More information

Dr Marc Lucas CLS Toulouse, France.

Dr Marc Lucas CLS Toulouse, France. Dr Marc Lucas CLS Toulouse, France. Oceanology International 15th March 2012 Slide 1 Ocean depiction In the past: Information mainly comes from in situ measurements (ADCP) Now: The role of satellite data

More information

Climate reanalysis and reforecast needs: An Ocean Perspective

Climate reanalysis and reforecast needs: An Ocean Perspective Climate reanalysis and reforecast needs: An Ocean Perspective Hao Zuo with M. Balmaseda, S. Tietsche, P. Browne, B. B. Sarojini, E. de Boisseson, P. de Rosnay ECMWF Hao.Zuo@ecmwf.int ECMWF January 23,

More information

Comparison of of Assimilation Schemes for HYCOM

Comparison of of Assimilation Schemes for HYCOM Comparison of of Assimilation Schemes for HYCOM Ashwanth Srinivasan, C. Thacker, Z. Garraffo, E. P. Chassignet, O. M. Smedstad, J. Cummings, F. Counillon, L. Bertino, T. M. Chin, P. Brasseur and C. Lozano

More information

ESA Sea Level Climate Change Initiative. Sea Level CCI project. Phase II 1 st annual review

ESA Sea Level Climate Change Initiative. Sea Level CCI project. Phase II 1 st annual review ESA Sea Level Climate Change Initiative Sea Level CCI project Phase II 1 st annual review ESA Sea Level Climate Change Initiative User Requirements in Coastal Zone WP1100 User requirements for climatequality

More information

Canadian contribution to the Year of Polar Prediction: deterministic and ensemble coupled atmosphere-ice-ocean forecasts

Canadian contribution to the Year of Polar Prediction: deterministic and ensemble coupled atmosphere-ice-ocean forecasts Canadian contribution to the Year of Polar Prediction: deterministic and ensemble coupled atmosphere-ice-ocean forecasts G.C. Smith, F. Roy, J.-F. Lemieux, F. Dupont, J-M Belanger and the CONCEPTS team

More information

ON THE ACCURACY OF CURRENT MEAN SEA SURFACE MODELS FOR THE USE WITH GOCE DATA

ON THE ACCURACY OF CURRENT MEAN SEA SURFACE MODELS FOR THE USE WITH GOCE DATA ON THE ACCURACY OF CURRENT MEAN SEA SURFACE MODELS FOR THE USE WITH GOCE DATA Ole B. Andersen 1, M-.H., Rio 2 (1) DTU Space, Juliane Maries Vej 30, Copenhagen, Denmark (2) CLS, Ramon St Agne, France ABSTRACT

More information

GODAE Ocean View Activities in JMA (and Japan)

GODAE Ocean View Activities in JMA (and Japan) GOVST VIII, Nov. 6 th, 2017, Bergen, Norway GODAE Ocean View Activities in JMA (and Japan) Yosuke Fujii 1, Norihisa Usui 1, Takahiro Toyoda 1, Nariaki Hirose 1, Hiromichi Igarashi 2, and Japan GODAE group

More information

Observations assimilated

Observations assimilated Observations assimilated R-factor to adjust model error variances and K-Factor to adjust observation error variances. ETKF employs SST and SLA bias correction via AR() model fit. TABLE Summary of ocean

More information

GODAE Status. OSEs/OSSEs meeting objectives. P.Y. le Traon, A. Fischer, E. Harrison, K. Wilmer Becker

GODAE Status. OSEs/OSSEs meeting objectives. P.Y. le Traon, A. Fischer, E. Harrison, K. Wilmer Becker GODAE Status OSEs/OSSEs meeting objectives P.Y. le Traon, A. Fischer, E. Harrison, K. Wilmer Becker Content 3. GODAE Status Achievements and successes Priorities GODAE in 2007/2008 5. Objectives of the

More information

Assimilating only surface pressure observations in 3D and 4DVAR

Assimilating only surface pressure observations in 3D and 4DVAR Assimilating only surface pressure observations in 3D and 4DVAR (and other observing system impact studies) Jean-Noël Thépaut ECMWF Acknowledgements: Graeme Kelly Workshop on atmospheric reanalysis, 19

More information

Feature-tracked 3D Winds from Satellite Sounders: Derivation and Impact in Global Models

Feature-tracked 3D Winds from Satellite Sounders: Derivation and Impact in Global Models Feature-tracked 3D Winds from Satellite Sounders: Derivation and Impact in Global Models David Santek 1, A.-S. Daloz 1, S. Tushaus 1, M. Rogal 1, W. McCarty 2 1 Space Science and Engineering Center/University

More information

Validation of sea ice concentration in the myocean Arctic Monitoring and Forecasting Centre 1

Validation of sea ice concentration in the myocean Arctic Monitoring and Forecasting Centre 1 Note No. 12/2010 oceanography, remote sensing Oslo, August 9, 2010 Validation of sea ice concentration in the myocean Arctic Monitoring and Forecasting Centre 1 Arne Melsom 1 This document contains hyperlinks

More information

STRONGLY COUPLED ENKF DATA ASSIMILATION

STRONGLY COUPLED ENKF DATA ASSIMILATION STRONGLY COUPLED ENKF DATA ASSIMILATION WITH THE CFSV2 Travis Sluka Acknowledgements: Eugenia Kalnay, Steve Penny, Takemasa Miyoshi CDAW Toulouse Oct 19, 2016 Outline 1. Overview of strongly coupled DA

More information

NEW GLOBAL MEAN DYNAMIC TOPOGRAPHY FROM A GOCE GEOID MODEL, ALTIMETER MEASUREMENTS AND OCEANOGRAPHIC IN-SITU DATA

NEW GLOBAL MEAN DYNAMIC TOPOGRAPHY FROM A GOCE GEOID MODEL, ALTIMETER MEASUREMENTS AND OCEANOGRAPHIC IN-SITU DATA NEW GLOBAL MEAN DYNAMIC TOPOGRAPHY FROM A GOCE GEOID MODEL, ALTIMETER MEASUREMENTS AND OCEANOGRAPHIC IN-SITU DATA Rio M-H (1), Mulet, S. (1), Picot, N. (2) (1) CLS,8-10 rue Hermès 31520 Ramonville Saint-Agne,

More information

High resolution geoid from altimetry & bathymetry: requirements for a future mission

High resolution geoid from altimetry & bathymetry: requirements for a future mission High resolution geoid from altimetry & bathymetry: requirements for a future mission The GRAL team: J-Y Royer 1,2, M-F Lalancette 3, G Louis 1,2, M Maia 1,2, D Rouxel 3 & L Géli 4 Project funded by 1 2

More information

Institute of Marine Sciences, National Research Council (ISMAR-CNR), Venice

Institute of Marine Sciences, National Research Council (ISMAR-CNR), Venice Overview of the esurge-venice project Marco Bajo Institute of Marine Sciences, National Research Council (ISMAR-CNR), Venice Istituto di Scienze Marine (ISMAR-CNR), National Research Council of Italy,

More information

Alexander Kurapov, in collaboration with R. Samelson, G. Egbert, J. S. Allen, R. Miller, S. Erofeeva, A. Koch, S. Springer, J.

Alexander Kurapov, in collaboration with R. Samelson, G. Egbert, J. S. Allen, R. Miller, S. Erofeeva, A. Koch, S. Springer, J. Coastal Ocean Modeling at CIOSS Alexander Kurapov, in collaboration with R. Samelson, G. Egbert, J. S. Allen, R. Miller, S. Erofeeva, A. Koch, S. Springer, J. Osborne - Pilot real-time forecast model of

More information

The ECMWF-MyOcean2 eddy-permitting ocean and sea-ice reanalysis ORAP5. Part 1: Implementation

The ECMWF-MyOcean2 eddy-permitting ocean and sea-ice reanalysis ORAP5. Part 1: Implementation 736 The ECMWF-MyOcean2 eddy-permitting ocean and sea-ice reanalysis ORAP5. Part 1: Implementation Hao Zuo, Magdalena A. Balmaseda, Kristian Mogensen Research Department February 2015 Series: ECMWF Technical

More information

Developments to the assimilation of sea surface temperature

Developments to the assimilation of sea surface temperature Developments to the assimilation of sea surface temperature James While, Daniel Lea, Matthew Martin ERA-CLIM2 General Assembly, January 2017 Contents Introduction Improvements to SST bias correction Development

More information

QUALITY INFORMATION DOCUMENT For IBI reanalysis Product IBI_REANALYSIS_PHYS_005_002

QUALITY INFORMATION DOCUMENT For IBI reanalysis Product IBI_REANALYSIS_PHYS_005_002 QUALITY INFORMATION DOCUMENT For IBI reanalysis Product Issue: 2.0 Contributors: Bruno Levier, Marcos Sotillo, Guillaume Reffray, Roland Aznar Approval Date by Quality Assurance Review Group : under review

More information

Satellite ALTimetry. SALT applications and use of data base for SE-Asia region. SEAMERGES kick-off meeting, Bangkok, Thailand.

Satellite ALTimetry. SALT applications and use of data base for SE-Asia region. SEAMERGES kick-off meeting, Bangkok, Thailand. Satellite ALTimetry SALT applications and use of data base for SE-Asia region SEAMERGES kick-off meeting, Bangkok, Thailand Marc Naeije 4 March 2004 1 Faculty of Aerospace Engineering DEOS/AS SEAMERGES

More information