Multi-satellite/Operational Applications Splinter Summary

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2007 OSTST Meetin g Multi-satellite/Operational Applications Splinter Summary Chairs: G. Jacobs, C. Birkett, P. Oke March 2007 Ocean Surface Topography Science Team Meeting

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Multi-satellite/Operational Applications Splinter Summary. Chairs: G. Jacobs, C. Birkett, P. Oke March 2007 Ocean Surface Topography Science Team Meeting. Oral Presentations. - PowerPoint PPT Presentation

Transcript of Multi-satellite/Operational Applications Splinter Summary

2007OSTSTMeeting

Multi-satellite/Operational Applications Splinter Summary

Chairs: G. Jacobs, C. Birkett, P. Oke

March 2007

Ocean Surface Topography Science Team Meeting

2007OSTSTMeeting Oral Presentations

Wilkin Predictability of Mesoscale Variability in the EAC given Strong Constraint Data Assimilation

Griffin Explaining the extraordinary: operational oceanography in Australia

Oke The Bluelink Ocean Data Assimilation System: an ensemble approach to an eddy-resolving application

Brassington Bluelink> ocean model analysis and prediction system delivering operational forecasts

Hobday Near real-time spatial management for a longline bycatch species based on sea surface topography and temperature observations

Verron AltiKa: a Ka-band altimetry system in tandem with JASON-2

Chao Development, Implementation and Evaluation of a Real-Time Ocean Forecasting System off the California Coast

Lagerloef Combining altimeter-derived currents with Aquarius salinity to study the marine freshwater budget

Queffeulou Merging wave height measurements from altimeters. Application to the investigation of large scale and regional features of sea state

Lefevre Wave Model Error Analysis from Altimetry

Dorandeu Future altimeter systems: is the mesoscale observability good enough for operational oceanography?

Larnicol Quality of real time altimeter maps: impact of data delay

Bouffard Improved satellite altimetric data dedicated to coastal areas: Validation over the northwestern Mediterranean

Tournadre Effect of rain and cloud on Ka band (ALTIKA) altimeter data

Steunou Impacts of atmospheric attenuations on AltiKa expected performances

Alpine Moveable Feasts: The Eddy and the MPA?

2007OSTSTMeeting Poster PresentationsKaplan Power spectral parameterizations of

error as function of resolution in gridded altimetry maps

Blanc Seadatanet, a pan-european infrastructure for ocean & marine data management

Oke A method for estimating representation error of oceanic observations

Birkett Near Real Time Monitoring of Global Lakes and Reservoirs

Bouffard A view from multi-mission satellite altimetry over the coastal ocean: application to the Ligurian Sea and the Corsica Channel

Dorandeu SSALTO/DUACS : Daily multi-mission products for global and regional applications

García Mediterranean water mass budget variations: revisited

Helbert Generation of DEMs for the new tracking mode onboard Poseidon-3 and AltiKa

Hernandez Validation in operational oceanography at the global scale in the GODAE and MERSEA framework : Overview of the Mercator Global Operational system assessment

Lamouroux Control of a free-surface barotropic model of the Bay of Biscay by assimilation of multi-source sea-level data (altimetry and tide-gauges) in presence of atmospheric forcing errors

Lamouroux Design of the future altimetry missions: a first prototype of an « end-to-end » mission simulator

Perry Ocean Surface Topography Data at the JPL Physical Oceanography DAAC

Steunou AltiKa : a new concept of altimeter for the SARAL mission

Ubelmann Impact of multisatellite altimetric missions on the Tropical Atlantic circulation from some Observing Systems Simulations Experiments

Vandemark Investigating ocean altimeter data and applications in the Gulf of MaineS. VignudelliALTICORE - a consortium serving European Seas with Coastal Altimetry

2007OSTSTMeeting Topics covered

•Issues in data assimilation

•Waves

•Applications to fisheries

•Data Provision

•Coastal and regional studies

•Observing systems

2007OSTSTMeeting Issues in Data Assimilation

Wilkin Predictability of Mesoscale Variability in the EAC given Strong Constraint Data Assimilation

Oke The Bluelink Ocean Data Assimilation System: an ensemble approach to an eddy-resolving application

Brassington Bluelink> ocean model analysis and prediction system delivering operational forecasts

Chao Development, Implementation and Evaluation of a Real-Time Ocean Forecasting System off the California Coast

Larnicol Quality of real time altimeter maps: impact of data delay

Kaplan Power spectral parameterizations of error as function of resolution in gridded altimetry maps

Oke A method for estimating representation error of oceanic observations

Lamouroux Control of a free-surface barotropic model of the Bay of Biscay by assimilation of multi-source sea-level data (altimetry and tide-gauges) in presence of atmospheric forcing errors

Hernandez Validation in operational oceanography at the global scale in the GODAE and MERSEA framework : Overview of the Mercator Global Operational system assessment

2007OSTSTMeeting Issues in Data Assimilation

… forecast skill of a i4DVar system

… importance of sub-surface assimilation for forecast skill

Wilkin et al.

0 lag –analysis skill

1 week lag –little loss of skill

2 week lag – forecast beginsto deteriorate

3 week lag – forecast still better than …

no assimilation

RMS difference between ROMS subsurface temperature predictions

and all XBT observations in 2001-2002 in the Tasman Sea 15-day forecast1-day forecast8-day forecast

SSH+ SST

SSH+ SST + XBT

Ensemble forecasts (white), ensemble mean (black) and obs (colour)

2007OSTSTMeeting Issues in Data Assimilation

… results from Bluelink ReANalysis (above)

Oke et al.

… OceanMAPS undergoing operational trials

Brassington et al.

2007OSTSTMeeting Issues in Data Assimilation

Chao et al

2007OSTSTMeeting Waves

Queffeulou Merging wave height measurements from altimeters. Application to the investigation of large scale and regional features of sea state

Lefevre Wave Model Error Analysis from Altimetry

•In areas of wave generation, model wave heights are too low (in red) and in areas where swell is dominant, model wave heights are too high (in blue).

•Comparisons with altimetry understanding of model errors led to improvements in model physics0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0

1

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11

Time in days

Sig

. w

av

e h

eig

ht

(m) buoy 44141

OBSWAM-MAWAM-BIWAM-C4

2007OSTSTMeeting Applications to Fisheries

Hobday Near real-time spatial management for a longline bycatch species based on sea surface topography and temperature observations

Alpine Moveable Feasts: The Eddy and the MPA?

Managementdecision

+

Habitat preferences

3D ocean info

Habitat prediction

Using value-added products that are derived from altimetry for flexible

ocean management

Alpine et al.

Hobday et al.

2007OSTSTMeeting Data Provision

Perry Ocean Surface Topography Data at the JPL Physical Oceanography DAAC

Birkett Near Real Time Monitoring of Global Lakes and Reservoirs

Dorandeu SSALTO/DUACS : Daily multi-mission products for global and regional applications

NRT monitoring of sea-level in lakes and reserviors, www.pecad.fas.usda.gov/cropexplorer/global_reservoir

Application for agriculture, water resources, irrigation potential, long-term drought …Birkett et al.

2007OSTSTMeeting Coastal / regional studies

Griffin Explaining the extraordinary: operational oceanography in Australia

Bouffard Improved satellite altimetric data dedicated to coastal areas: Validation over the northwestern Mediterranean

Bouffard A view from multi-mission satellite altimetry over the coastal ocean: application to the Ligurian Sea and the Corsica Channel

Vandemark Investigating ocean altimeter data and applications in the Gulf of MaineS. VignudelliALTICORE - a consortium serving European Seas with Coastal Altimetry

García Mediterranean water mass budget variations: revisited

Adelaide Advertiser …

15 degree water off NSW in summer!

Griffin et al.

2007OSTSTMeeting

Tournadre Effect of rain and cloud on Ka band (ALTIKA) altimeter data

Steunou Impacts of atmospheric attenuations on AltiKa expected performances

Steunou AltiKa : a new concept of altimeter for the SARAL mission

Helbert Generation of DEMs for the new tracking mode onboard Poseidon-3 and AltiKa

Wilkin Predictability of Mesoscale Variability in the EAC given Strong Constraint Data Assimilation

Oke The Bluelink Ocean Data Assimilation System: an ensemble approach to an eddy-resolving application

Escudier Future altimeter systems: is the mesoscale observability good enough for operational oceanography?

Larnicol Quality of real time altimeter maps: impact of data delay

Ubelmann Impact of multisatellite altimetric missions on the Tropical Atlantic circulation from some Observing Systems Simulations Experiments

Lamouroux Design of the future altimetry missions: a first prototype of an «end-to-end» mission simulator

Lagerloef Combining altimeter-derived currents with Aquarius salinity to study the marine freshwater budget

Verron AltiKa: a Ka-band altimetry system in tandem with JASON-2

Tournadre Effect of rain and cloud on Ka band (ALTIKA) altimeter data

Steunou Impacts of atmospheric attenuations on AltiKa expected performances

Observing Systems

2007OSTSTMeeting Observing Systems

Verron et al. OSSEs for the choice of AltiKa orbit

Mid-latitudes:

Compare performance of assimilating model using Jason-2 + 10, 17 or 35 day AltiKa satellite

35 day AltiKa seems a good compromise for mid-latitudes

2007OSTSTMeeting Observing Systems

… Escudier et al., Larnicol et al.

EKE differences between4 & 2 satellites missions

(Units are in cm2/s2)

00

.20

.40

.60

.81

2007 2008 2009 2010 2011 2012 2013 2014

Jason-2 (old T/P track, not stacking

with Jason-1)

CryoSat

Jason-1 tandem phase (new ground track covered)

AltiKa

End of ENVISAT

Sentinel-3x 2

00

.20

.40

.60

.81

2007 2008 2009 2010 2011 2012 2013 2014

Jason-2 (old T/P track, not stacking

with Jason-1)

CryoSat

Jason-1 tandem phase (new ground track covered)

AltiKa

End of ENVISAT

Sentinel-3x 2

Probability to have: 2 satellites in delayed time (red),

3 satellites in near real time (blue)

2 missions

4 missions

Delayed timenew corrections(GOT00+DAC)

36.7 29.7

Real timeOrbit errorNo-centring

45.2 37.1

Comparison with tide gauges

2007OSTSTMeeting Observing Systems

Applications to climate, tropical, etc.

… Lagerloef et al.

2007OSTSTMeeting Conclusions

•Requirements minimum of 2 satellites required to resolve mesoscale variability

4 NRT satellites equivalent to 2 delayed-mode satellites

Assimilation of different data types increases redundancy in the GOOS

•Applications: altimetry is considered the foundation of operational applications

Expected (e.g., search & rescue, military etc).

Coastal

Hurricane

Fisheries

Water resources

•Looking ahead Aquarius mission (SSS)

CRYOSAT fully exploited

AltiKa and CRYOSAT will require special treatment for full exploitation (ongoing efforts)

Extension of altimetry towards the coast shows promise (ongoing)