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Working towards a global-scale vegetationwater product from smos optical depth

In English

Författare

  • Jennifer Grant
  • Jean-Pierre Wigneron
  • Mathew Williams
  • Marko Scholze
  • Yann Kerr

Summary, in English

In this study, vegetation optical depth from ESA's Soil Moisture and Ocean Salinity (SMOS) satellite mission is combined with other existing remote sensing, meteorological and literature data in order to obtain values of gravimetric vegetation water content (M-g). The methodology combines an effective medium model valid at passive microwave frequencies with a vegetation dielectric constant model. The algorithm is calibrated for 11 global vegetation classes. The resulting product consists of temporally dynamic similar to 25 km global grids of Mg. The first maps clearly show seasonal differences in vegetation water, which vary for the different continental regions due to variations in e.g. latitude, climate and landcover type. This new vegetation water product is unique and offers important complementary information to existing vegetation indices.

Publiceringsår

2014

Språk

Engelska

Publikation/Tidskrift/Serie

2014 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)

Dokumenttyp

Konferensbidrag

Förlag

IEEE - Institute of Electrical and Electronics Engineers Inc.

Ämne

  • Physical Geography

Nyckelord

  • SMOS
  • vegetation optical depth
  • vegetation water content

Conference name

IEEE International Geoscience and Remote Sensing Symposium (IGARSS)

Conference date

2014-07-13 - 2014-07-18

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 2153-7003
  • ISSN: 2153-6996