MEASUREMENTS OF INFRARED RADIATION DIVERGENCE IN THE ATMOSPHERE WITH THE DOUBLE-RADIOMETER AND THE BLACK BALL

Abstract

A double-radiometer for measuring infrared radiation divergence in the atmosphere is described. Three soundings with this instrument and the black ball are compared. General agreement exists between the radiometer divergence measurements and the divergence computed from the black-ball data. One sounding indicates that the atmosphere can be warmed by infrared radiation where the black ball is warmed above air temperature. An atmospheric emissivity has been computed from the radiometer data and compared with the relative humidity.