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Proceedings Paper

Deriving land surface parameters from three different vegetated sites with the ELBARA 1.4-GHz passive microwave radiometer
Author(s): Richard A. M. De Jeu; Thomas Holmes; Manfred Owe
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Paper Abstract

A methodology was recently developed to estimate the land surface parameters soil moisture, soil temperature and vegetation optical depth on a global scale by using passive microwave remote sensing. This methodology is general, in a way that it does not require any field observations of soil moisture or canopy biophysical properties for calibration purposes, and can be used with microwave observations at different wavelengths. However, several algorithms in this approach are somewhat empirical, and the vegetation component in this methodology is still difficult to understand and interpret. A follow up field experiment was planned for April 2003 to address some of these issues. The experiment was conducted at a controlled meteorological field site in Wageningen (The Netherlands). Three different plots, a bare soil, a soil with short grass (reference site), and a site with growing grass vegetation were selected. Several hydro-meteorological parameters were monitored extensively at each site, including the radiobrightness temperatures from the ELBARA 1.4 GHz passive microwave radiometer. This paper gives a description of this field experiment and will demonstrate several effects of vegetation on the radiobrightness temperature.

Paper Details

Date Published: 24 February 2004
PDF: 10 pages
Proc. SPIE 5232, Remote Sensing for Agriculture, Ecosystems, and Hydrology V, (24 February 2004); doi: 10.1117/12.512494
Show Author Affiliations
Richard A. M. De Jeu, Vrije Univ. Amsterdam (Netherlands)
Thomas Holmes, Vrije Univ. Amsterdam (Netherlands)
Manfred Owe, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 5232:
Remote Sensing for Agriculture, Ecosystems, and Hydrology V
Manfred Owe; Guido D'Urso; Jose F. Moreno; Alfonso Calera, Editor(s)

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