saral-altika science plan: status - aviso.oceanobs.com · april 24, 2009: first meeting of the...
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SARAL-ALTIKA Science Plan:
Status
RM Gairola and Jacques Verron
Space Applications Centre, Ahmedabad, India
Laboratoire des Ecoulements Geophysiques et Industriels (LEGI), France
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AltiKa/SARAL Mission Scientific Objectives
AltiKa/SARAL central objective :
Ocean meso-scale variability:
Data assimilation:
Coastal altimetry:
Other Objectives :
Climate Change: Mean sea level
Inland ice sheet monitoring
Light rainfall and clouds climatology
Operational oceanography
Continental waters
Geophysical and geological investigations
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Progress Status on Scientific Activities Regarding AltiKa Mission :
1. 16-17 Sept. 2008: First National SARAL Workshop at SpaceApplications Centre, Ahmedabad.
2. 22-23 April, 2009: First ISRO-CNES Workshop on SARAL-AltiKaScience & Applications was organized on at Space ApplicationsCentre, Ahmedabad.
3. April 24, 2009: First meeting of the ISRO-CNES Joint ScienceWorking Group (JSWG), at SAC Ahmedbad.
4. October 2009: Presentation of SARAL Science and CALVAL Plan(draft versions) in the frame of CNES/ISRO/EUMETSATSARAL System Review in Toulouse
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5. Joint Announcement of Opportunity for SARAL/AltiKa. Proposals were solicited and Informations were made available on AVISO website and ISRO websites.
6. April 1, 2010: Second meeting of the Joint Science Working Group (JSWG), at SAC Ahmedbad, for selection of PIs based on AO.
7. April 15, 2010: Global AO Projects (of 30 projects from 12countries) has been initiated after recommendations from JSWG.
8. Second SARAL-AltiKa Science & Applications Meet at SpaceApplications Centre, 15-17 March, 2011 - ON-GOING
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Ocean Mesoscale variability studies Data assimilation in
global and regional models
Multisatellite mesoscale variability
Assimilation of SLA into OGCM
Assim. of altimeter data into wave models
Assimilation of SLA into coastal models
in the oceansGlobal sea level
rise
Polar ice dynamics from
multisatellites
Exploring altimetry for continental waters
Estimation of precipitation
Geodetic investigations in the offshores
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Indian National Projects:
Total No. of Projects: 13 from ISRO, 11 Indian National from 10 Institutions (+14 New Proposals Reviewed)
1. Retrieval and Range Corrections
2. Ocean Mesoscale variability
3. Coastal and inland altimetry
4. Data assimilation
5. Climate and Process Studies
6. Cal/val activity
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French National Projects:
Total No. of Projects: 16 proposals received from 7 Institutions in France against the Announcement of Opportunity.
Themes:
1. Cal/val activities, reprocessing
2. Coastal/regional altimetry
3. Ocean dynamics
4. Inland water monitoring
5. Ice studies
6. Assimilation in numerical models and
7. Outreach activities.
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Global AO Projects:
Total No. of Projects: 30 proposals were received from 10 countriesagainst the Announcement of Opportunity:
• USA (11), Spain (3), Germany (3), Australia (3), UK (2), Taïwan (1),Portugal (1), Japan (1), Greece (1), Brazil (1), India (3)]
• Large Institutional representation: JPL, NOAA, US NAVY, NRL,ECMWF, CSIRO
• High Quality of proposals and teams, most of them well-known inthe OSTST context
• Good coverage of the topics / adequacy to the call
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Coverage of AO Themes:
• Cal/Val global & in situ, • Parameter analysis & reprocessing, • Coastal/regional altimetry • Ocean dynamics• Operational/model/assimilation,• Continental waters, ice• Mean sea level• Polar/Sea Ice
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Total Projects (Indian, French, Global)
1. No. of Countries: 12
2. No. of Projects: 84 (70 + 14)
3. Total No. of Investigators (PI+CIs): >300
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MesoscaleVariabilitySea level
Ice sheetmonitoring
Sea state
OperationalOceanography
Coastal ocean
Continental waters
Assimilation
Cal‐Val
3
69
4
12
32
19
Misc.2
5
PI selection: topics
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AltiKa designed to… Fill the post-ENVISAT «gap»Reach the mission objectives derived from post-GODAE/IGOS requirements… in complement to the operational Jason-2 mission
Double approach for SARAL/AltiKaContribution to the general altimetric satellite goalsSpecific scientific objectives related to Ka band new capabilities
Strong opportunity for scientific cooperationsAltiKa Payload as a precursor for future altimetry systems ?
Dual-technique altimetry system based on Ka-band altimeters and wide swath altimeters (e.g. Ka-band Radar Interferometer –KaRIN- for SWOT)
Assessment
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Data Assimilation Techniques (EnKF, SEEKF, 3D, 4D Var) for Integrated use (model, assimilation)Coastal OceanographyA multidimensional oceanic perspective:
General circulations, mesoscales, planetary wavesClimate, sea level
Other scientific interfacesHydrologyIce
… Assessment & Prioritisation …
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Future Actions
1. ISRO-CNES Joint Science Plan Finalization (JSWG Meeting on 16th March)
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