Martin Wirth

TL;DR: In this paper, the vertical profiles of the linear particle depolarization ratio of pure dust clouds were measured during the Saharan Mineral Dust Experiment (SAMUM) at Ouarzazate, Morocco, close to source regions in May-June 2006, with four lidar systems at four wavelengths (355, 532, 710 and 1064 nm).

TL;DR: In this article, the authors investigate potential sources of measurement errors and compare them with the scientific requirements for a direct detection CO2 system operating at 1.6μm, 0.4% for CO2 at 2.1μm and 0.3% for CH4 at 3.9μm.

TL;DR: In this article, aircraft observations of mountain-wave-induced mesoscale PSCs in which temperatures were 12'K lower than expected synoptically were used to identify regions where mountain waves can develop, and show that they can cause frequent chlorine activation of air in the Arctic stratosphere.

TL;DR: The COPS field phase was performed from 1 June to 31 August 2007 in a low-mountain area in southwestern Germany/eastern France covering the Vosges mountains, the Rhine valley and the Black Forest mountains.

TL;DR: In this article, a high-performance airborne water vapor differential absorption lidar has been developed during the past years, which uses a four-wavelength/three-absorption line measurement scheme in the 935 nm H2O absorption band to cover the whole troposphere and lower stratosphere simultaneously.