PASSIVE MICROWAVE REMOTE-SENSING OF SOIL-MOISTURE - RESULTS FROM HAPEX, FIFE AND MONSOON-90

被引：87

作者：

SCHMUGGE, T

JACKSON, TJ

KUSTAS, WP

WANG, JR

机构：

[1] USDA Hydrology Lab, Beltsville

[2] NASA Goddard Space Flight Center, Greenbelt

来源：

ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING | 1992年 / 47卷 / 2-3期

关键词：

D O I：

10.1016/0924-2716(92)90029-9

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

The large dielectric constant of water at the lower microwave frequencies causes a large change in the emissivity of soils as they become wet, from 0.95 when dry to less than 0.6 when wet. Numerous aircraft and field experiments have demonstrated that a 1.4 GHz radiometer is sensitive to moisture content of the surface soil layer for a wide range of vegetation conditions. This approach was studied in the large scale field experiments: HAPEX, FIFE and MONSOON 90 using an imaging microwave radiometer operating at a frequency of 1.42 GHz. For FIFE and MONSOON 90 a wide range of moisture conditions were present and it was possible to observe the drydown of the soil following heavy rains and to map its spatial variation. The quantitative agreement of microwave observations and ground measurements was very good. In HAPEX there were no significant rains and conditions were generally rather dry; however, moisture variations due to irrigation were observed.

引用

页码：127 / 143

页数：17

共 27 条

[11]

Harrington, Lawrence, An airborne multiple beam, 1.4 GHz pushbroom microwave radiometer, Proc. IGARSS'85, pp. 601-606, (1985)

[12]

Jackson, O'Neill, Salinity effects on the microwave emission of soil, IEEE Transactions on Geoscience and Remote Sensing, 25 GE, pp. 214-220, (1987)

[13]

Jackson, Schmugge, Passive microwave remote sensing of soil moisture, Adv. Hydrosci., 14, pp. 123-159, (1986)

[14]

Jackson, Schmugge, Vegetation effects on the microwave emission of soils, Remote Sens. Environm., 36, pp. 203-212, (1991)

[15]

Kittel, Knapp, Seastedt, Schimel, A Landscape view of biomass, LAI, and photosynethic capacity for FIFE, Proc. Am. Meteorol. Soc. Symp. First ISLSCP Field Experiment, pp. 66-69, (1990)

[16]

Kustas, Goodrich, Moran, Amer, Bach, Blanford, Chenbouni, Classen, Clements, Doraiswamy, Dubois, Clarke, Daughtry, Gellman, Grant, Hipps, Huete, Humes, Jackson, Keffer, Nichols, Parry, Perry, Pinker, Pinter, Qi, Riggs, Schmugge, Shutko, Stannard, Swiatek, Van Leeuwen, Van Zyl, Vidal, Washburne, Weltz, An interdisciplinary study of the energy and water fluxes in the atmosphere-biosphere system over semiarid rangelands: Description and some preliminary results, Bull. Am. Meteorol. Soc., 72, pp. 1

[17]

Mkrtchjan, Reutov, Shutko, Kostov, Michalev, Nedeltchev, Spasov, Vichev, Experiments in Bulgaria for determination of soil moisture in the top one meter layer using microwave radiometry and a priori information, Proc. IGARSS'88 Symp., pp. 665-666, (1988)

[18]

Newton, Black, Makanvand, Blanchard, Jean, Soil moisture information and thermal microwave emission, IEEE Transactions on Geoscience and Remote Sensing, 20 GE, pp. 275-281, (1982)

[19]

Nichols, Land surface energy balance and surface soil moisture variations in HAPEX, M.Sc. Thesis, (1989)

[20]

Schmugge, Microwave sensing of soil moisture, Applications of Remote Sensing to Agrometeorology, pp. 257-284, (1989)

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