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Title: Estimation of snow surface temperature for NW Himalayan regions using passive microwave satellite data
Authors: Singh, K K
Mishra, V D
Singh, Dhiraj Kumar
Ganju, A
Keywords: Brightness temperature;Snow surface temperature;Emissivity
Issue Date: Feb-2013
Publisher: NISCAIR-CSIR, India
IPC Code: 92.40.ed; 92.40.vw; 92.60.hv
Abstract: In this paper Special Sensor Microwave Imager (SSM/I) data has been used to estimate snow surface temperature (SST) of different ranges of North West (NW) Himalaya. The average values of emissivity of snow have been estimated for Karakoram, Great Himalaya and Pir-Panjal ranges. The emissivity values are further used to estimate SST values. It is observed that 85 GHz (H) frequency is best suited for estimation of SST. Observations from reported emissivity values for snow from non-Himalayan region are found to be not well suited for SST estimation of Himalayan snow. However, root mean square error has been observed to be less in satellite derived SST values for Himalayan region (3.8, 3.9 and 4.3 K for Great Himalaya, Karakoram and Pir-Panjal, respectively) by using emissivity values estimated from ground collected SST data. A good correlation (0.83) has been observed between the satellite derived SST values and manually observed SST values for different ranges of NW Himalaya.
Page(s): 27-33
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.42(1) [February 2013]

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