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Microwave Emissivity Studies of Land Cover around Kanakapura Region Using High Spatial Resolution SAPHIR

Author:
Vasudha, M. P., Raju, G.
Source:
Journal of the Indian Society of Remote Sensing 2019 v.47 no.1 pp. 77-89
ISSN:
0255-660X
Subject:
climatology, hydrology, land cover, microwave radiometers, remote sensing, surface temperature, vegetation, wavelengths, India
Abstract:
Land emissivity sensed within a suitable range of wavelengths by microwave radiometer is useful to deduce land surface temperature and land surface emissivity. Brightness temperature measurements by space-borne microwave sensors have been utilized to determine land surface emissivity for the study of climatology, hydrological and agricultural applications. Currently, application of sounder data is gaining attention, in analyzing land surface characteristic features especially due to the higher spatial resolution, in general. In the present work, an attempt is made to obtain land surface emissivity from the six channels of SAPHIR (Sondeur Atmospherique du Profil d Humidit Intertropicale par Radiometrie), sensor with special reference to bare land and south Western Ghats of India during pre-monsoon and post-monsoon seasons. The innovation of the present analysis is to demonstrate the possibility of estimating and retrieving surface parameters from emissivity values retrieved from brightness temperature measured from SAPHIR sounder with channel 6 of 183.31 ± 11.0 GHz over selected study area with various surface conditions. Further, the present analysis relates to application of emissivity values retrieved from brightness temperature measured from SAPHIR sounder with channel 6, i.e., 183.31 ± 11.0 GHz for the study of vegetation, climatology and agricultural applications.
Agid:
6303473