文档介绍：Solar aspects of papers
Measurement of water vapor, AOD, UV-B and NIR Radiation during
Total Solar Eclipse on 23rd November 2003 at Maitri, Antarctica.
. Jain, B. C. Arya, Ashok Kumar, Sachin D. Ghude and Arun Kumar
Radio and Atmospheric Sciences Division
National Physical Laboratory
New Delhi – 110012, India
Fax No. 091 11 25726938/ 091 11 25726952
E-mail : ******@nplindia..in
Abstract
Total solar eclipse provides a rare and unique opportunity to make special type of observations to test the theoretical predictions and to get valuable data on certain fundamental problems of physics. Keeping this in view experiments were carried out during Total Solar Eclipse on November 23, 2003 at Maitri (70°46´S, 011°44´E), Antarctica. A hand held microprocessor based sun photometer was used to measure the solar radiation at 305, 312, 320, 940 and 1020 nm. The first three filter channels were used to derive atmospheric total ozone while later two channels were used for water vapour and aerosol optical depth. The column Ozone could not be estimated due to instrument limitation as the solar zenith angle was very high around 88 degree during the solar eclipse. The solar radiation at all the wavelengths started to drop very sharply.  The concentration of water vapour was found to be decreased while the aerosol optical depth at 1020 nm increased. A sudden increase of solar radia