A NEW STATISTICAL METHOD OF ESTIMATING SURFACE RADIANCES FROM CORRESPONDING SATELLITE WINDOW-CHANNEL RADIANCES
Abstract Stepwise linear regressions for the specification of blackbody surface radiances are computed using a set of 103 model atmospheres chosen originally by Wark et al. and the corresponding simulated values of Nimbus 2 window-channel (10–11 µ) radiances. Two stratifications are considered: (a) precipitable water vapor, u>1, and (b) u<1 gm cm–2. For each of five zenith angles considered, significant contributions are made in both regression formulas by inclusion of parameters representing the radiative transfer effects of water vapor and ozone. This regression formulation makes use of empirically derived expressions related to these effects over long atmospheric paths. The specification of the sample of surface radiances is in accordance with a multiple correlation coefficient, exceeding 0.990 and 0.995 in the respective stratifications. Corrections for atmospheric effects to be applied to Nimbus 2 window-channel radiances in estimating the corresponding surface values are displayed in nomogramic as w...
Experimental approaches to remote atmospheric probing in the infrared from satellites
Thirteen different types of radiometric instruments either were flown in orbit or are scheduled to fly on forthcoming satellites. A fourteenth type, a very high resolution radiometer for geosynchronous altitude, is among several of the others whose development was stressed for the Global Atmospheric Research Program. Characteristics of each radiometric instrument and some applications of the different types of data are discussed.
Inverse problems in radiative transfer - A review.
Inverse problems in radiative transfer applied to remote measurements of IR radiation from planetary atmospheres, noting temperature and water vapor inversions