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AGU: Geophysical Research Letters

 

Keywords

  • global change
  • hydrology
  • wetland

Index Terms

  • Global Change: Water cycles
  • Hydrology: Wetlands
  • Global Change: Remote sensing

Abstract

Observations of changes in surface water over the western Siberia lowland

M. Grippa

Centre d'Etudes Spatiales de la BIOsphère, Toulouse, France

N. M. Mognard

Laboratoire d'Etudes en Géophysique et Océanographie Spatiales, Toulouse, France

T. Le Toan

Centre d'Etudes Spatiales de la BIOsphère, Toulouse, France

S. Biancamaria

Laboratoire d'Etudes en Géophysique et Océanographie Spatiales, Toulouse, France

We analyse the evolution of the fraction of water surface (FWS), derived by SSM/I between 1988 and 2002 over the Western Siberia Lowland. This whole region exhibits an increase in the amount of FWS that is in agreement with the observed trends of the Ob river discharge and precipitation. However, a similar increasing trend is not found over the most important wetland area of Sibirskie Uvaly Hills located in a region of sporadic permafrost. These observations support the hypothesis that climate warming in discontinuous permafrost environments may lead to a reduction of small lakes and wetland areas.

Received 27 March 2007; accepted 15 June 2007; published 7 August 2007.

Citation: Grippa, M., N. M. Mognard, T. Le Toan, and S. Biancamaria (2007), Observations of changes in surface water over the western Siberia lowland, Geophys. Res. Lett., 34, L15403, doi:10.1029/2007GL030165.

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