Estimation of soil-type heterogeneity effects in the retrieval of soil moisture from radiobrightness

Authors
Galantowicz, JF Entekhabi, D Njoku, EG
Citation
Jf. Galantowicz et al., Estimation of soil-type heterogeneity effects in the retrieval of soil moisture from radiobrightness, IEEE GEOSCI, 38(1), 2000, pp. 312-316
Citations number
12
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
ISSN journal
01962892 → ACNP
Volume
38
Issue
1
Year of publication
2000
Part
1
Pages
312 - 316
Database
ISI
SICI code
0196-2892(200001)38:1<312:EOSHEI>2.0.ZU;2-O
Abstract
We estimate the magnitude of the beam-filling error due to soil-type hetero geneity in the determination of sensor-footprint average soil moisture (<(t heta)over bar>(f)) retrieved from remote L-band radiometer measurements. Se ts of randomly chosen soils are given uniform initial wetness and are subje cted to atmospheric drying ol er 15 days in a numerical model. Results indi cate that soil heterogeneity contributes less than 0.7% volumetric soil-moi sture error (0.007 m(water)(3)/m(soil)(3)).