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

[1]

Andre, Goutorbe, Perrier, HAPEX-MOBILHY A hydrologic atmospheric experiment for the study of water budget and evaporation flux at the climatic scale, Bulletin of the American Meteorological Society, 67, pp. 138-144, (1986)

[2]

Andre, Goutorbe, Perrier, Becker, Bessemoulin, Bougeault, Brunet, Brutsaert, Carlson, Cuenca, Gash, Gelpe, Hildebrand, Lagouarde, Lloyd, Mahrt, Mascart, Mazaudier, Noilhan, Ottle, Payen, Phulpin, Stull, Shuttleworth, Schmugge, Taconet, Tarrieu, Thepenier, Valencogne, Vidal-Madjar, Weill, Evaporation over land surfaces: First results from HAPEX-MOBILHY special observing period, Ann. Geophys., 6, pp. 477-492, (1988)

[3]

Bernard, Vauclin, Vidal-Madjar, Possible use of active microwave remote sensing data for prediction of regional evaporation by numerical simulation of soil water movement in the unsaturated zone, Water Resour. Res., 17, pp. 1603-1610, (1981)

[4]

Bernard, Martin, Thony, Vauclin, Vidal-Madjar, C-Band radar for determining surface soil moisture, Remote Sens. Environ., 12, pp. 189-200, (1982)

[5]

Choudhury, Monitoring global land surface using Nimbus-7 37 GHz data: Theory and examples, Int. J. Remote Sens., 10, pp. 1579-1605, (1989)

[6]

Choudhury, Schmugge, Chang, Newton, Effect of surface roughness on the microwave emission from soils, J. Geophys. Res., 84, pp. 5699-5706, (1979)

[7]

Choudbury, Schmugge, Mo, A parameterisation of the soil temperature for microwave emission, Journal of Geophysical Research, 87, pp. 1301-1309, (1982)

[8]

Dobson, Ulaby, Active microwave soil moisture research, IEEE Transactions on Geoscience and Remote Sensing, 24 GE, pp. 23-36, (1986)

[9]

Dobson, Ulaby, Hallikainen, Reyes, Microwave dielectric behavior of wet soil—Part II Dielectric mixing models, IEEE Transactions on Geoscience and Remote Sensing, 23 GE, pp. 35-46, (1985)

[10]

Hall, Sellers, MacPherson, Kelly, Verma, Markham, Blad, Wang, Strebel, FIFE: Analysis and results—A review, Adv. Space Res., 9, 7, pp. 275-293, (1989)

← 1 2 3 →