Transient modeling of the ground thermal conditions using satellite data in the Lena River delta, Siberia

Westermann S., Peter M., Langer M., Schwamborn G. J., Schirrmeister L., Etzelmueller B., ...Daha Fazla

CRYOSPHERE, cilt.11, sa.3, ss.1441-1463, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 11 Sayı: 3
  • Basım Tarihi: 2017
  • Doi Numarası: 10.5194/tc-11-1441-2017
  • Dergi Adı: CRYOSPHERE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1441-1463
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Permafrost is a sensitive element of the cryosphere, but operational monitoring of the ground thermal conditions on large spatial scales is still lacking. Here, we demonstrate a remote-sensing-based scheme that is capable of estimating the transient evolution of ground temperatures and active layer thickness by means of the ground thermal model CryoGrid 2. The scheme is applied to an area of approximately 16 000 km(2) in the Lena River delta (LRD) in NE Siberia for a period of 14 years. The forcing data sets at 1 km spatial and weekly temporal resolution are synthesized from satellite products and fields of meteorological variables from the ERA-Interim reanalysis. To assign spatially distributed ground thermal properties, a stratigraphic classification based on geomorphological observations and mapping is constructed, which accounts for the large-scale patterns of sediment types, ground ice and surface properties in the Lena River delta.