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...
a Numerical Procedure for Computation of Outgoing Terrestrial Flux Based upon the Elsasser-Culbertson Model with Tests Applied to Model-Atmosphere Soundings
Support by the Navy Weather Research Facility, and Naval Air Systems Command Project Famos is gratefully acknowledged.
Design of Multiple-Monochromators
CONVENTIONAL prism monochromators have two main limitations: a limited resolution due principally to the finite size of the prism; and impurity of spectrum owing to light scattered from various optical components, particularly the prism. A great improvement in these two respects can be obtained by a simple method which converts a single-monochromator into a double- or multiple-monochromator.