Remote sensing of atmospheric water vapour from Bhaskara IISAMIR data and its comparison withNOAA-7 water vapour data |
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| Authors: | P N Pathak B S Gohil A Sarkar |
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| Institution: | (1) Meteorology and Oceanography Division, Space Applications Centre, 380053 Ahmedabad, India |
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| Abstract: | Applying the method of ‘statistical linear regression’, atomspheric water vapour over oceanic areas has been estimated from
the 19GHz and 22 GHz data of the satellite microwave radiometer (SAMIR) system onboard the Bhaskara II satellite. In the absence of any simultaneousin situ measurements on water vapour over ocean, theSAMIR-derived water vapour data have been compared with like data from theNOAA-7 satellite. It is suggested that a positive bias seen in theSAMIR data could be due to calibration errors in the basic data. In view of the observed bias, the original regression equation
is modified and then used to obtain water vapour distributions over ocean for winter and south-west monsoon seasons usingSAMIR data of several orbits. |
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| Keywords: | Remote sensing water vapour SAMIR" target="_blank">Bhaskara IISAMIR NOAA satellite" target="_blank">NOAA satellite |
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