Mario Nachbar

TL;DR: In this article, the authors present measurements on the nucleation and growth of CO2 ice on sub-4'nm radius iron oxide and silica particles representing MSPs at conditions close to the mesosphere of Mars.

TL;DR: In this paper, the authors report on the vapor pressure of these water phases with a focus on metastable amorphous solid water and stacking disordered ice in the light of recent experimental findings and discuss possible implications for the atmosphere.

TL;DR: In this article, the vapor pressure of amorphous solid water (ASW) is measured at temperatures between 135 and 190 degrees K. This is consistent with the assumption that ASW is the first solid form of ice deposited from the opaque phase at temperatures up to 160 degrees K, and the estimated crystal sizes are in agreement with reported crystal size measurements and remain stable for hours below 160 K.

TL;DR: In this article, a versatile device for studying the controlled interaction of free nanoparticles with supersaturated vapors is presented and characterized, which utilizes an rf-ion trap for storing a cloud (>108 particles) of singly charged nanoparticles in the sub 10-nm size regime and combines it with a static supersaturation chamber operating at low pressure in free molecular flow regime.

TL;DR: In this article, the authors report on continuously measured 222Rn activity concentrations in near-surface air at Neumayer Station in the period 1995-2011, and show that there is no long-term trend and overall mean ± standard deviation of (0.019 ± 0.012) Bq m−3.