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Record Details

Record 6 of 5186
A Time Series Approach for Soil Moisture Estimation
External Online Source: hdl:2014/39671
Author and Affiliation:
Kim, Yunjin(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
vanZyl, Jakob(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Abstract: Soil moisture is a key parameter in understanding the global water cycle and in predicting natural hazards. Polarimetric radar measurements have been used for estimating soil moisture of bare surfaces. In order to estimate soil moisture accurately, the surface roughness effect must be compensated properly. In addition, these algorithms will not produce accurate results for vegetated surfaces. It is difficult to retrieve soil moisture of a vegetated surface since the radar backscattering cross section is sensitive to the vegetation structure and environmental conditions such as the ground slope. Therefore, it is necessary to develop a method to estimate the effect of the surface roughness and vegetation reliably. One way to remove the roughness effect and the vegetation contamination is to take advantage of the temporal variation of soil moisture. In order to understand the global hydrologic cycle, it is desirable to measure soil moisture with one- to two-days revisit. Using these frequent measurements, a time series approach can be implemented to improve the soil moisture retrieval accuracy.
Publication Date: Jan 01, 2006
Document ID:
20060050765
(Acquired Nov 01, 2006)
Subject Category: EARTH RESOURCES AND REMOTE SENSING
Document Type: Preprint
Meeting Information: IGARSS; 31 Jul. 2006; Denver, CO; United States
Financial Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 3p; In English; Original contains black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: TIME SERIES ANALYSIS; SOIL MOISTURE; HAZARDS; RADAR MEASUREMENT; BACKSCATTERING; HYDROLOGICAL CYCLE; CONTAMINATION; TEMPORAL DISTRIBUTION; VEGETATION; SLOPES
Other Descriptors: SOIL MOISTURE; POLARIMETRIC RADAR
Availability Source: Other Sources
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