Ground-based water vapour soundings by microwave radiometry and Raman lidar on Jungfraujoch (Swiss Alps) D. Gerber1, I. Balin2, D. G. Feist1, N. Kämpfer1, V. Simeonov2, B. Calpini2,*, and H. van den Bergh2 1Institute of Applied Physics, University of Bern, Switzerland 2Laboratory of Air Pollution, Swiss Federal Institute of Technology – Lausanne (EPFL), Lausanne, Switzerland *now at: MétéoSuisse, Payerne Station, Switzerland
Abstract. Water vapour has been measured from the International Scientific Station
Jungfraujoch (ISSJ, 47° N, 7° E, 3580m above sea
level) during the winters of 1999/2000 and 2000/2001 by microwave radiometry
and Raman lidar. The abundance of atmospheric water vapour between the
planetary boundary layer and the upper stratosphere varies over more than
three orders of magnitude. The currently used measurement techniques are only
suited to determine the abundance of water vapour in different atmospheric
regimes. None can resolve the vertical distribution profile from ground
level to the top of the stratosphere by itself. We present such a water
vapour profile where simultaneous measurements from a Raman lidar and a
microwave radiometer were combined to cover both the troposphere and the
stratosphere, respectively. We also present a study of the stratospheric and
tropospheric water vapour variability for the two consecutive winters.
Citation: Gerber, D., Balin, I., Feist, D. G., Kämpfer, N., Simeonov, V., Calpini, B., and van den Bergh, H.: Ground-based water vapour soundings by microwave radiometry and Raman lidar on Jungfraujoch (Swiss Alps), Atmos. Chem. Phys., 4, 2171-2179, doi:10.5194/acp-4-2171-2004, 2004.