Landscape freeze/thaw products from Soil Moisture Active/Passive (SMAP) radar and radiometer data

Xiaolan Xu, R. Scott Dunbar, Chris Derksen, Andreas Colliander, John Kimball, Youngwook Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The NASA Soil Moisture Active Passive (SMAP) mission produced a daily landscape freeze/thaw product (L3-FT-A) at 3-km spatial resolution derived from ascending and descending orbits of SMAP high-resolution L-band (1.4 GHz) radar measurements. Following the loss of the SMAP radar in July 2015, coarser (36-km) footprint passive microwave retrievals from the SMAP radiometer were used to derive an alternative daily freeze/thaw product (L3-FT-P). This presentation will provide an overview of the development of both L3-FT products. Validation using in situ observations from core validation sites is used to illustrate differences in the sensitivity of the 3 km radar versus the 36 km radiometer measurements to the landscape freeze/thaw state.

Original languageEnglish
Title of host publication2016 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages132-135
Number of pages4
ISBN (Electronic)9781509033324
DOIs
StatePublished - Nov 1 2016
Event36th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Beijing, China
Duration: Jul 10 2016Jul 15 2016

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume2016-November

Conference

Conference36th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016
Country/TerritoryChina
CityBeijing
Period07/10/1607/15/16

Keywords

  • freeze/thaw
  • radar
  • radiometer
  • SMAP

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