Accuracy assessment of MODIS daily snow albedo retrievals with in situ measurements in Karasu basin, Turkey

Tekeli A., Sensoy A., Sorman A., Akyurek Z., Sorman U.

HYDROLOGICAL PROCESSES, vol.20, no.4, pp.705-721, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 20 Issue: 4
  • Publication Date: 2006
  • Doi Number: 10.1002/hyp.6114
  • Journal Name: HYDROLOGICAL PROCESSES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.705-721
  • Keywords: MODIS, snows albedo, Turkey, IMAGING SPECTRORADIOMETER MODIS, SURFACE ALBEDO, COVER PRODUCTS, VALIDATION, ICE, STREAMFLOW, AREA, MAPS
  • Middle East Technical University Affiliated: Yes

Abstract

Over the ablation period of 2004, daily snow albedo values retrieved from the moderate-resolution imaging spectroradiometer (MODIS) Terra were compared with ground-based albedo measurements. Two data sets are used for this study. The first data set is from two automatic weather stations (AWS) located at fixed points in Karasu basin in eastern Turkey. This provided the temporal assessment of MODIS daily snow albedo values. The second data set, consisting of 19 observation points randomly distributed around one of the AWS sites, enables the spatial variability assessment of MODIS albedo retrievals. Both MODIS and in situ albedo observations were aggregated in a geographic information system for further analysis.