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Atmospheric Remote Sensing with a multi-frequency microwave radiometer in the 20-30 GHz band

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Title Atmospheric Remote Sensing with a multi-frequency microwave radiometer in the 20-30 GHz band
 
Creator Debnath, Anjan
 
Subject Radiometer
Brightness temperature
Water vapour absorption
Humidity profile
Water vapour scale height
 
Description 122-127
With the help of Ground Based seven channel K-Band humidity profiling radiometer, humidity at different height levels from 0 to 10 Km from ground has been obtained for two years from 2016 to 2017. Radiometer based zenith attenuation has been retrieved for the 20-30 GHz band which have been compared with ITU-R proposed attenuation estimation due to absorption by gases. ITU-R estimation has been found to underestimate zenith attenuation for tropical high rainfall region like Umiam. The Mean Atmospheric Temperature has been estimated from ground observations and Zenith Radiometer Attenuation through linear regression equations. Additionally, water vapour scale height has been estimated from zenith attenuation and surface meteorological parameters. Total water vapour has been also obtained from this and compared with Total water vapour estimated from IWV retrievals by radiometer. A regression relation has been found between IWV and 22.24 GHz brightness temperature obtained from Radiometer.
 
Date 2021-06-07T09:54:47Z
2021-06-07T09:54:47Z
2020-09
 
Type Article
 
Identifier 0975-105X (Online); 0367-8393 (Print)
http://nopr.niscair.res.in/handle/123456789/57445
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJRSP Vol.49(3) [September 2020]