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Title: Comparison of SMOS soil moisture/brightness temperatures for morning and evening passes
Authors: Calla, O P N
Sharma, Rahul
Gadri, Kishan Lal
Kalla, Abhishek
Agrahari, Sunil Kumar
Rathore, Gaurav
Keywords: Soil moisture;Brightness temperature;Polarisation index;Land surface temperature
Issue Date: Dec-2013
Publisher: NISCAIR-CSIR, India
PACS No.: 92.40.Lg; 92.60.Kc; 84.40.Xb
Abstract: Soil moisture is an essential element, which controls the land-atmospheric system and thus, its continuous monitoring is extremely important. Regular monitoring of spatio-temporal variability of surface soil moisture can be done using microwave remote sensing techniques, as there is high contrast in dielectric properties of pure dry soil (2-3) and pure water (80) at microwave frequencies. Variation in surface soil moisture is not only affected by precipitation, evaporation and transpiration, but often groundwater and root zone moisture also play an important role. In the present paper, surface soil moisture data from Soil Moisture and Ocean Salinity (SMOS) satellite is used to analyse the changes in surface soil moisture from evening to next or following morning (6.00 PM and 6.00 AM) in an arid region of Rajasthan, India. An increase in surface soil moisture is observed for maximum data from evening to following morning. The same trends were also verified using polarization index values.
Page(s): 420-424
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.42(6) [December 2013]

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