First water vapor measurements at 183 GHz from the high alpine station Jungfraujoch

During six months in 1999, we observed the water vapor emission line at 183.31 GHz with a microwave radiometer at the high alpine site Jungfraujoch in Switzerland. We retrieved statistics on the atmospheric transmission and profiles of stratospheric water vapor on selected days. Our site seems well suited for observations of this spectral line.