Estimation of upper tropospheric humidity from water vapour channel of very high-resolution radiometer onboard INSAT-3A and Kalpana satellites

P. K. Thapliyal; M. Vinayak; K. S. Ajil; S. Shah; P. K. Pal; P. C. Joshi

doi:10.1117/12.693982

8 December 2006 Estimation of upper tropospheric humidity from water vapour channel of very high-resolution radiometer onboard INSAT-3A and Kalpana satellites

P. K. Thapliyal, M. Vinayak, K. S. Ajil, S. Shah, P. K. Pal, P. C. Joshi

Author Affiliations +

Proceedings Volume 6408, Remote Sensing of the Atmosphere and Clouds; 640807 (2006) https://doi.org/10.1117/12.693982
Event: SPIE Asia-Pacific Remote Sensing, 2006, Goa, India

Abstract

Present study describes a methodology to establish an empirical expression to estimate the upper tropospheric humidity (UTH) from brightness temperature observations in water vapour channel of Very High Resolution Radiometer (VHRR) onboard Indian geostationary satellites INSAT-3A and Kalpana. Radiative transfer simulations for VHRR water vapour channel were made using SBDART model for tropical atmosphere with different upper tropospheric relative humidity values and varying zenith angles. INSAT-3A and Kalpana VHRR sensor response functions (SRF) for water vapour channel were used to simulate the convolved radiances. Estimated UTH values have been compared with corresponding Meteosat-5 observations. Comparison of retrieved UTH is also made with radiosonde observations of relative humidity weighted by water vapour channel weighting function.

Citation Download Citation

P. K. Thapliyal, M. Vinayak, K. S. Ajil, S. Shah, P. K. Pal, and P. C. Joshi "Estimation of upper tropospheric humidity from water vapour channel of very high-resolution radiometer onboard INSAT-3A and Kalpana satellites", Proc. SPIE 6408, Remote Sensing of the Atmosphere and Clouds, 640807 (8 December 2006); https://doi.org/10.1117/12.693982

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available