Assimilation of active microwave measurements for soil moisture profile retrieval under laboratory conditions

Rudi Hoeben, Peter A. Troch

Research output: Contribution to conferencePaper

4 Scopus citations

Abstract

We discuss the potential of retrieving information on the soil moisture profile from measurements of the surface soil moisture content through active microwave observations. Here we use active microwave observations of the surface soil moisture content in a data assimilation framework to show that this allows the retrieval of the entire soil moisture profile. The data assimilation procedure demonstrated is based on the Kalman filter technique. Kalman filtering allows reconstruction of the state vector when at least part of the state variables are observed regularly. The dynamic model of the system used here is based on the 1D Richards equation. The observation equation is based on the Integral Equation Model and is used to link the radar observations to surface soil moisture content. Recently, reported about laboratory experiments investigating the use of active microwave observations to estimate surface soil moisture content. We apply the data assimilation scheme to the radar measurements of these experiments to retrieve the entire soil moisture profile in the soil sample used, and compare these results with the soil moisture profile measurements (using TDR). It is shown that with a limited number of radar measurements accurate retrieval of the entire soil moisture profile is possible.

Original languageEnglish (US)
Pages1271-1273
Number of pages3
StatePublished - Dec 1 2000
Externally publishedYes
Event2000 Intenational Geoscience and Remote Sensing Symposium (IGARSS 2000) - Honolulu, HI, USA
Duration: Jul 24 2000Jul 28 2000

Other

Other2000 Intenational Geoscience and Remote Sensing Symposium (IGARSS 2000)
CityHonolulu, HI, USA
Period7/24/007/28/00

ASJC Scopus subject areas

  • Computer Science Applications
  • Earth and Planetary Sciences(all)

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    Hoeben, R., & Troch, P. A. (2000). Assimilation of active microwave measurements for soil moisture profile retrieval under laboratory conditions. 1271-1273. Paper presented at 2000 Intenational Geoscience and Remote Sensing Symposium (IGARSS 2000), Honolulu, HI, USA, .