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| Titel |
from ENVISAT to ALTIKA : Poyang Lake water level monitoring is now going on. |
| VerfasserIn |
Sylviane Daillet, Hervé Yesou, Denis Blumstein, Stéphane Calmant, Claire Huber |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250112265
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| Publikation (Nr.) |
 EGU/EGU2015-12415.pdf |
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| Zusammenfassung |
| Since 10 years within the framework of the DRAGON ESA MOST program, a monitoring of Poyang Lake, the major fresh water lake in China, is realized , exploiting large sources of EO data. Thanks to ENVISAT altimeter measurements a 10 years long series in available.
As JASON2 do not fly over this lake, and ENVISAT operations stopped in 2010, a gap occurs in water level measurements with altimetry. The launch of SARAL/AltiKa mission in February 2013 flying the same historical 35-day orbit than previous European ERS and Envisat satellites is then of major importance .
In this work, all the altimetry data from AltiKa over Poyang Lake from 2013/03/14 are used for determination of water level. From cycle 1 to cycle 6, tracks are not yet settled on ENVISAT historical grid, but from track 7 altimetry measurements are valuable and allow the computation of a water level series of good quality.
The coherence between ENVISAT series and ALTIKA series already settled allows to conclude that monitoring with altimetry of Poyang Lake can go on. |
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