Effective soil moisture sampling depth of L-band radiometry: A case study

被引：213

作者：

Escorihuela, M. J. ^{[1
]}

Chanzy, A. ^{[2
]}

Wigneron, J. P. ^{[3
]}

Kerr, Y. H. ^{[4
]}

机构：

[1] isardSAT, Dept Hydrol & Water Resources, Barcelona 08042, Spain

[2] UAPV, INRA, UMR EMMAH, Avignon, France

[3] EPHYSE, INRA, Bordeaux, France

[4] Ctr Etud Spatiales BIOsphere, Toulouse, France

来源：

REMOTE SENSING OF ENVIRONMENT | 2010年 / 114卷 / 05期

关键词：

Soil moisture; Passive microwave; SMOS; Roughness; Sampling depth; MICROWAVE EMISSION; WATER; MODEL; VEGETATION;

D O I：

10.1016/j.rse.2009.12.011

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The aim of this study is to analyze the influence of the soil moisture sampling depth in the parameterization of soil emission in microwave rachometry at L-band. The analysis is based on brightness temperature, soil moisture and temperature measurements acquired over a bare soil during the SMOSREX experiment. A more detailed profile of surface soil moisture was obtained with a soil heat and water flows mechanistic model. It was found that (1) the soil moisture sampling depth depends on soil moisture conditions, (2) the effective soil moisture sampling depth is shallower than provided by widely used field moisture sensors, and (3) the soil moisture sampling depth has an impact on the calibration of soil roughness model parameters. These conclusions are crucial for the calibration and validation of remote sensing data at L-band. (C) 2010 Elsevier Inc. All rights reserved.

引用

页码：995 / 1001

页数：7

共 25 条

[1]

[Anonymous], P INT GEOSC REM SENS

[2] Accuracy of top soil moisture simulation using a mechanistic model with limited soil characterization [J].

Chanzy, A. ;

Mumen, M. ;

Richard, G. .

WATER RESOURCES RESEARCH, 2008, 44 (03)

[3] Soil moisture monitoring at the field scale using automatic capacitance probes [J].

Chanzy, A ;

Chadoeuf, J ;

Gaudu, JC ;

Mohrath, D ;

Richard, G ;

Bruckler, L .

EUROPEAN JOURNAL OF SOIL SCIENCE, 1998, 49 (04) :637-648

[4] SIGNIFICANCE OF SOIL SURFACE MOISTURE WITH RESPECT TO DAILY BARE SOIL EVAPORATION [J].

CHANZY, A ;

BRUCKLER, L .

WATER RESOURCES RESEARCH, 1993, 29 (04) :1113-1125

[5] EFFECT OF SURFACE-ROUGHNESS ON THE MICROWAVE EMISSION FROM SOILS [J].

CHOUDHURY, BJ ;

SCHMUGGE, TJ ;

CHANG, A ;

NEWTON, RW .

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1979, 84 (NC9) :5699-5706

[6] SMOSREX:: A long term field campaign experiment for soil moisture and land surface processes remote sensing [J].

de Rosnay, Patricia ;

Calvet, Jean-Christophe ;

Kerr, Yann ;

Wigneron, Jean-Pierre ;

Lemaitre, Francois ;

Escorihuela, Maria Jose ;

Sabater, J. Munoz ;

Saleh, Kauzar ;

Barrie, Jose L. ;

Bouhours, Gilles ;

Coret, Laurent ;

Cherel, Guy ;

Dedieu, Gerard ;

Durbe, Roger ;

Fntz, Nour Ed Dine ;

Froissard, Francis ;

Hoedjes, Joost ;

Kruszewski, Alain ;

Lavenu, Francois ;

Suquia, David ;

Waldteufel, Philippe .

REMOTE SENSING OF ENVIRONMENT, 2006, 102 (3-4) :377-389

[7]

de Vries D.A., 1963, PHYS PLANT ENV, P210

[8] MICROWAVE DIELECTRIC BEHAVIOR OF WET SOIL .2. DIELECTRIC MIXING MODELS [J].

DOBSON, MC ;

ULABY, FT ;

HALLIKAINEN, MT ;

ELRAYES, MA .

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 1985, 23 (01) :35-46

[9] Influence of bound-water relaxation frequency on soil moisture measurements [J].

Escorihuela, Maria Jose ;

De Rosnay, Patricia ;

Kerr, Yann H. ;

Calvet, Jean-Christophe .

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2007, 45 (12) :4067-4076

[10] Simple model of the bare soil microwave emission at L-band [J].

Escorihuela, Maria Jose ;

Kerr, Yann H. ;

de Rosnay, Patricia ;

Wigneron, Jean-Pierre ;

Calvet, Jean-Christophe ;

Lemaitre, Francois .

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2007, 45 (07) :1978-1987

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