pod/geoid splinter wednesday march 14, 2007 morning and afternoon j.p. berthias – j. ries ocean...
TRANSCRIPT
POD/Geoid splinter
Wednesday March 14, 2007
Morning and Afternoon
J.P. Berthias – J. Ries
Ocean Topography Science Team Meeting - Hobart, Australia – March 2007
Ocean Topography Science Team Meeting - Hobart, Australia – March 2007 2
POD after Venice … before Hobart
■POD plan was to be ready to start producing orbits with new standards by Fall 2006
“availability of ITRF2005 and time variable gravity model set the time table”
■ ITRF2005 arrived … with difficulties a lot of work went into its evaluation new issues were raised
■reprocessing of early cycles with GDR-b standards postponed the need for the “new” standards opens the possibility to revise choices made in Venice
Ocean Topography Science Team Meeting - Hobart, Australia – March 2007 3
Goals for Hobart POD/geoid splinter
■Evaluate quality of GDR-b orbits
■Evaluate impact of ITRF2005 and adopt it as is or with modifications
■Review recent progress in Gravity and Geoid models with a focus on Time Variable Gravity
■Review contribution of orbit to the overall error budget
■Collect inputs on the Jason-3 orbit choice issue from the POD point of view
Ocean Topography Science Team Meeting - Hobart, Australia – March 2007 4
Splinter schedule
■Two part splinter morning session during Splinter session 2
Wednesday morning from 9:30 to 12:30
afternoon session during Splinter session 3 Wednesday afternoon from 16:30 to 18:00 after poster session
■morning and afternoon sessions will be held in room TASMAN A
Ocean Topography Science Team Meeting - Hobart, Australia – March 2007 5
Morning session : POD
■ 09:30 - J.-P. Berthias - Introduction: Status of Pending Actions and Key Issues■ 09:45 - L. Cerri - Jason-1 POD Reprocessing at CNES: Current Status and Further
Developments■ 10:00 - L. Cerri, J.-P. Berthias – Time Variable Gravity : Implementation Issues for Jason 1■ 10:15 - W. Bertiger - Precision Orbit Determination, Trade Studies and Improvements for
Jason-1 with GPS■ 10:30 – Break■ 11:00 - F. Lemoine - Improvement of the Complete TOPEX and Jason Orbit Time Series:
Current Status■ 11:15 P. Bonnefond - Validation Activities for Jason-1 and Topex/Poseidon Precise Orbit■ 11:30 - J. Ries - Orbit Error Budget for Jason-1 and Topex/Poseidon Precision Orbits■ 11:45 - Ch. Foerste - On the use of Temporal Gravity Field Models Derived from GRACE
for Altimeter Satellite Orbit Determination■ 12:00 - P. Willis - Validation and Extension of ITRF2005 for DORIS POD■ 12:15 - J. Ries - Validation and Extension of ITRF2005 for SLR POD
Ocean Topography Science Team Meeting - Hobart, Australia – March 2007 6
Afternoon session : Geoid and discussion
■16:30 - Discussion on key POD Issues: ITRF2005 implementation, time variable gravity, other model recommendations
■17:00 - J. Ries GRACE Mission Status and Current Results■17:15 - R. Biancale EIGEN5 activities at GFZ and GRGS■17:30 - X. Deng Assessment of Geoid Models off Western Australia
Using Oceanographic In-Situ Measurements■17:45 - M.-H. Rio Ocean Mean Dynamic Topography from Altimetry and
GRACE: Toward a Realistic Estimation of the Error Field■17:55 - Discussion on remaining Geoid Issues■18:00 - Adjourn
Ocean Topography Science Team Meeting - Hobart, Australia – March 2007 7
POD/Geoid Posters
■ A 4-year Series of Earth Mass Changes derived from GRACE and LAGEOS dataR. Biancale, J.-M. Lemoine, S. Loyer;, S. Bruinsma, F. Perosanz, G. Balmino
■ Validation Activities for Jason-1 and Topex/Poseidon Precise OrbitsP. Bonnefond, P. Exertier, O. Laurain, P. Berio and D. Coulot
■ Evaluation of Orbits for the WATER Hydrosphere Mapper MissionD. Chambers, R. D. Ray, J. C. Ries
■ Toward EIGEN-05: Global Mean Gravity Field Models from Combination Of Satellite Mission and Altimetry/Gravimetry Surface DataC. Foerste, F. Flechtner, R. Schmidt, R. Koenig, Ul. Meyer, R. Stubenvoll, M. Rothacher, F.Barthelmes, H. Neumayer, R. Biancale, S. Bruinsma, J.-M. Lemoine, S. Loyer
■ New Mean Sea Surface DNSC07P. Knudsen, O. Andersen
■ Evaluation of the Geosat and Geosat Follow-On Precise Orbit EphemerisF. Lemoine, N.P. Zelensky, B.D. Beckley, D.S. Chinn, D.D. Rowlands, J.L. Lillibridge, R.Scharroo, W.H.F. Smith
■ Jason 1 GPS Processing at CNESF. Mercier, L. Cerri, S. Houry, P. Perrachon, J.-P. Berthias
■ Ocean Mean Dynamic Topography from altimetry and GRACE: toward a realistic estimation of the error fieldM.-H. Rio, P. Schaeffer,J.-M. Lemoine, G. Larnicol
■ Validation and Extension of ITRF2005 for DORIS and SLR POD (DPOD2005 and LDPOD2005)P. Willis, J.C. Ries, F.G. Lemoine, E.C. Pavlis, L. Soudarin, N. Zelensky