Jens Reichardt GKSS-Forschungszentrum (Germany) Ulla Wandinger Inst. for Tropospheric Research (Germany) Marcus Serwazi GKSS-Forschungszentrum (Germany) Klaus C. H. Weitkamp GKSS-Forschungszentrum Geesthacht GmbH (Germany)
A combined Raman elastic-backscatter lidar for tropospheric
profiling of moisture, ozone, and aerosols and stratospheric profiling of
ozone, aerosols, and temperature is presented. A XeCl excimer and a
frequency-tripled Nd:YAG laser serve as light sources. An eight-channel
interference-filter polychromator is used as the receiver. Water vapor,
particle extinction and backscatter coefficients, and the particle lidar ratio
are determined by the use of the Raman-lidar technique. For depolarization
studies the parallel- and cross-polarized components of the 355-nm
elastic-backscatter signal are detected. Ozone can be derived from the
Raman nitrogen channels as well as from the elastic-backscatter channels
by applying the Raman-DIAL and the DIAL technique, respectively.
The temperature is obtained from the Raman and Rayleigh signals in the
particle-free stratosphere. The apparatus is described in detail. Measurement
examples showing the capabilities of the new system are given.