DocumentCode :
2609724
Title :
A one-dimensional hydrology/radiobrightness model for freezing/thawing soils
Author :
Liou, Yuei-An ; England, A.W.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Volume :
4
fYear :
1996
fDate :
27-31 May 1996
Firstpage :
2155
Abstract :
Soil temperature and moisture profiles play a crucial role in governing energy and moisture fluxes between bare soils and the atmosphere. These profiles also co-determine radiobrightness so that the difference between model-predicted and observed radiobrightness becomes a measure of error in a model´s estimate of temperature or moisture. The authors present a physically based, coupled moisture and temperature, one-dimensional hydrology/radiobrightness (1dH/R) model for bare soil that is subject to freezing and thawing. They use this model to predict thermal, hydrologic, and radiobrightness signatures for a three-month simulation period in fall/winter on the northern Great Plains as part of an investigation of the influence of water transport on these signatures. Given a typical initial moisture content of 38%, they find that the difference in surface liquid water content between water transport and no water transport cases grows to 19% during the three-month period, and that the difference in surface ice content reaches 21% over the same period. The diurnal radiobrightness variation differs between the two cases by as much as 37 Kelvin
Keywords :
geophysical techniques; hydrological techniques; ice; microwave measurement; radiometry; remote sensing; soil; terrestrial heat; Great Plains; SHF; diurnal variation; freezing thawing soil; geophysical measurement technique; hydrology; land ice; land surface temperature; microwave radiometry; moisture flux; one dimensional radiobrightness model; remote sensing; soil moisture; soil temperature; terrain mapping; terrestrial heat; thaw state; Atmosphere; Atmospheric measurements; Atmospheric modeling; Hydrologic measurements; Hydrology; Ice surface; Moisture measurement; Predictive models; Soil measurements; Temperature;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1996. IGARSS '96. 'Remote Sensing for a Sustainable Future.', International
Conference_Location :
Lincoln, NE
Print_ISBN :
0-7803-3068-4
Type :
conf
DOI :
10.1109/IGARSS.1996.516919
Filename :
516919
Link To Document :
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