thumbnail

Comparison of AMSR-E and SSM/I snow parameter retrievals over the Ob river basin

By: , , , , , and 

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time
  • Download citation as: RIS | Dublin Core

Abstract

Passive microwave observations from the Advanced Microwave Scanning Radiometer - EOS (AMSR-E) and from the Special Sensor Microwave Imager (SSM/I) are used to analyse the evolution of the snow pack in the Ob river basin during the snow season of 2002-03. The Ob river is the biggest Russian river with respect to its watershed area (2 975 000 km2). The Ob originates in the Altai mountains and flows northward across the vast West Siberian lowland towards the Arctic Ocean. The majority of snow cover is contained in the lowlands rather than in mountainous regions and persists for six months or more. During the snow season, surface air temperatures are very cold. Therefore, the combination of cold dry snow and large areas of uniform topography is ideal for snowpack extent and water equivalent retrievals from passive microwave observations. The thermal gradient through the snow pack is estimated and used to model the growth of the snow grain size and to compute the evolution of the passive microwave derived snow depth over the region. A comparison between the AMSR-E and SSM/I estimates is performed and the differences between the snow parameters from the two satellite instruments are analysed.

Suggested Citation

Mognard, N.M., Grippa, M., LeToan, T., Kelly, R., Chang, A., and Josberger, E., 2004, Comparison of AMSR-E and SSM/I snow parameter retrievals over the Ob river basin, in International Geoscience and Remote Sensing Symposium (IGARSS), v. 6, Anchorage, AK, 20 September 2004 through 24 September 2004.

Publication type Conference Paper
Publication Subtype Conference Paper
Title Comparison of AMSR-E and SSM/I snow parameter retrievals over the Ob river basin
Volume 6
Year Published 2004
Language English
Larger Work Title International Geoscience and Remote Sensing Symposium (IGARSS)
First page 3713
Conference Title 2004 IEEE International Geoscience and Remote Sensing Symposium Proceedings: Science for Society: Exploring and Managing a Changing Planet. IGARSS 2004
Conference Location Anchorage, AK
Conference Date 20 September 2004 through 24 September 2004
Additional publication details