Raman-Lidar zur Fernmessung von Wasserdampf- und Kohlendioxid-Hoehenprofilen in der Troposphaere. (Remote sensing of tropospheric water vapor and carbon dioxide height profiles by use of a Raman lidar).

摘要

This dissertation describes a lidar system for the height-resolved determination of tropospheric water vapor and carbon dioxide mixing ratios. The measurement is based on the detection of the backscattered Raman radiation following the transmission of a laser pulse. The apparatus was built and its properties were investigated. Profiles of both H(sub 2)O and CO(sub 2) could be obtained, but the required precision of (+-)1 ppm CO(sub 2) can not yet be achieved because of a fluorescence background which is hard to quantify with the present measurements system. Height profiles of water vapor can be measured to about 8 km. Radiosonde comparison measurements show excellent agreement. With the atmospheric extinction coefficient determined from the oxygen Raman signal, the different atmospheric attenuation of backscattered light of the signal and reference wavelengths can be corrected for. (orig.) With 63 figs., 17 tabs.