Articles | Volume 20, issue 2
Research article
28 Jan 2020
Research article |  | 28 Jan 2020

No anomalous supersaturation in ultracold cirrus laboratory experiments

Benjamin W. Clouser, Kara D. Lamb, Laszlo C. Sarkozy, Jan Habig, Volker Ebert, Harald Saathoff, Ottmar Möhler, and Elisabeth J. Moyer

Data sets

ChiWIS H2O data from the IsoCloud4 Campaign B. Clouser

Short summary
Previous measurements of water vapor in the upper troposphere and lower stratosphere (UT/LS) have shown unexpectedly high concentrations of water vapor in ice clouds, which may be due to an incomplete understanding of the structure of ice and the behavior of ice growth in this part of the atmosphere. Water vapor measurements during the 2013 IsoCloud campaign at the AIDA cloud chamber show no evidence of this anomalous supersaturation in conditions similar to the real atmosphere.
Final-revised paper