TROPOS – Cloud Lidar at Technion Research Page: http://polly.tropos.de/?p=lidarzeit&Ort=33 Comments: A multiwavelength Raman and polarization lidar from TROPOS (Leibniz Institute for Tropospheric Research, Leipzig, Germany) was installed on the top of the Meyer building of the Department of Electrical Engineering at Technion, Haifa, Israel for continuing measurements of the vertical aerosol distribution in Israel. The investigation on atmospheric particles (aerosols) and their interaction with clouds is the main research topic of the Leibniz Institute for Tropospheric Research (TROPOS) in Germany. Different aerosols from different sources are transported intercontinentally and thus worldwide measurements are necessary to determine their temporal, horizontal and vertical distribution, their optical and microphysical properties, and their influence on clouds and the global energy budget. The multiwavelength Raman and polarization lidar is an appropriate state of the art technique for continuous vertical aerosol measurements. At TROPOS, both hardware, and retrieval algorithms are developed for this application. In their talk in January 2016, Dietrich Althausen and Holger Baars from TROPOS introduced the optical remote sensing aerosol lidar technique and the quantities that are determined from aerosol lidar measurements. They showed, how certain retrieved parameters can be used to identify the observed particles in more detail. Examples of their worldwide measurement (e.g. PollyNET: http://polly.tropos.de) were used to illustrate this approach.