INVESTIGATION OF THE INFRARED EMISSION SPECTRUM OF THE ATMOSPHERE AND EARTH. PART II. BALLOON-BORNE RADIOMETERS FOR MEASUREMENTS OF THE ATMOSPHERIC INFRARED RADIATION.

Two radiometer systems for balloon-borne application have been designed to investigate the infrared radiation field from the ground up to 30 km and the composition of the upper atmosphere. The first instrument is an eight-channel radiometer for absolute spectral measurements of the upwelling infrared radiation in different atmospheric windows and also in the 6.3 micron water vapor and 9.6 micron ozone band. The second instrument is a radiometer which allows to determine the fraction of solar radiation absorbed infrared bands of various atmospheric gases. It has to be operated from a sun stabilized platform. The report describes the instruments and test results. (Author)