Hannes Vogelmann

TL;DR: In this article, the decay phase of an unprecedented, record-breaking stratospheric perturbation caused by wildfire smoke is reported and discussed in terms of geometrical, optical, and microphysical aerosol properties.

TL;DR: In this article, the authors investigated the wavelength dependence of the threshold for nanosecond optical breakdown in water and revealed steps consistent with breakdown initiation by multiphoton ionization, with an initiation energy of about 6.6 eV.

TL;DR: In this paper, the authors used a dewpoint mirror instrument at the Zugspitze summit station to quantify the residual stratospheric component in stratospherically influenced air masses, however, the mixing of tropospheric air into the stratosphere intrusion layers must be taken into account.

TL;DR: In this article, the authors focus on the long-lasting background period since the late 1990s and 2006, in view of processes maintaining a residual lower-stratospheric aerosol layer in absence of major eruptions, as well as the period of moderate volcanic impact afterwards.

TL;DR: A differential absorption lidar system has been developed for the measurement of water vapor throughout the free troposphere with high vertical resolution with an agreement within 5% in a major part of the operating range.