Biancamaria_etal_IGARSS2011_22Jul2011.ppt

Benefits of satellite altimetry for transboundary basins S. Biancamaria 1,2 , F. Hossain 3 , D. P. Lettenmaier 4 , N. Pourthié 2 and C. Lion 1,2 1 LEGOS, Toulouse, France 2 CNES, Toulouse, France 3 CEE, Tennessee Tech University, Cookeville, TN, USA 4 CEE, University of Washington, Seattle, WA, USA 27 Jul 2011 IGARSS 2011 - session WE2.T10

Transboundary basins ,[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10

Outline ,[object Object],[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10

Brahmaputra and Ganges basins ,[object Object],[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10 Bangladesh

Issue ,[object Object],[object Object],[object Object],[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10

Data used: in-situ measurements 27 Jul 2011 IGARSS 2011 - session WE2.T10

Data used: satellite altimetry ,[object Object],[object Object],[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10 242_1 166_1 014_1 116_2 T/P Virtual station Distance from gage Mean time between obs. 242_1 550 km 14 days 166_1 250 km 16 days Mean time between obs. Distance from gage T/P Virtual station 12 days 1560 km 116_2 22 days 530 km 014_1

Methodology 1/2 ,[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10 Water level Correlation Time Lead time 0 0 0.6 with k=lead time k 0.8 k Upstream: h alti (t) Downstream; h insitu (t)

Methodology 2/2 ,[object Object],[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10 h in-situ (t) 0 h alti (t-k) Linear fit of h insitu (t)=f[h alti (t-k)] Water level 0 Time h insitu (downstream) k day lead time forecast

Results on the Brahmaputra ,[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10 T/P virtual station 250 km upstream: T/P virtual station 550 km upstream: 5-day forecast RMSE ~ 0.5 m 5-day forecast RMSE ~ 0.5 m Brahmaputra water elevation 5 4 3 2 1 0 -1 -2 -3 2000 2001 2002 Water elevation (m) Brahmaputra water elevation 5 4 3 2 1 0 -1 -2 -3 2000 2001 2002 Water elevation (m) In-situ T/P forecast Legend:

Results on the Ganges 27 Jul 2011 IGARSS 2011 - session WE2.T10 ,[object Object],T/P virtual station 530 km upstream: 5-day forecast RMSE ~ 0.6 m Ganges water elevation 6 4 2 0 -2 -4 2001 2001.4 2001.8 Water elevation (m) 10-day forecast RMSE ~ 0.9 m Ganges water elevation 6 4 2 0 -2 -4 2001 2001.4 2001.8 Water elevation (m) T/P virtual station 1560 km upstream: ,[object Object],In-situ T/P forecast Legend:

SWOT and the Brahmaputra/Ganges ,[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10

Expected benefits from SWOT ,[object Object],[object Object],[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10 Brahmaputra water elevation 5 4 3 2 1 0 -1 -2 -3 2000 2001 2002 Water elevation (m) Brahmaputra water elevation Discharge (10 4 m 3 .S -1 ) 7 6 5 4 3 2 1 0 2000 2001 2002

Conclusion for Brahmaputra/Ganges ,[object Object],[object Object],[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10

SWOT and world lakes/reservoirs 27 Jul 2011 IGARSS 2011 - session WE2.T10 2 4 6 8 10 SWOT visits per repeat cycle 3 2.5 2 1.5 1 0.5 0 Surface area seen (10 6 km 2 )

Indus reservoirs 27 Jul 2011 IGARSS 2011 - session WE2.T10 ,[object Object],[object Object],[object Object],-> Lack of information = difficulties in downstream water management

SWOT and Indus reservoirs ,[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10

Baglihar dam ,[object Object],[object Object],[object Object],[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10 5 m 37.5x10 6 m 3 ,[object Object],[object Object]

Baglihar dam ,[object Object],[object Object],[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10 Baglihar Baglihar Ascending track: Descending track:

Kishenganga project ,[object Object],[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10 Kishenganga Ascending track: Descending track: Kishenganga

Conclusion for Indus reservoirs ,[object Object],[object Object],[object Object],[object Object],27 Jul 2011 IGARSS 2011 - session WE2.T10

Thank you for your attention 27 Jul 2011 IGARSS 2011 - session WE2.T10

Biancamaria_etal_IGARSS2011_22Jul2011.ppt

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Biancamaria_etal_IGARSS2011_22Jul2011.ppt

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