Articles | Volume 20, issue 13
Research article
14 Jul 2020
Research article |  | 14 Jul 2020

Ice-supersaturated air masses in the northern mid-latitudes from regular in situ observations by passenger aircraft: vertical distribution, seasonality and tropospheric fingerprint

Andreas Petzold, Patrick Neis, Mihal Rütimann, Susanne Rohs, Florian Berkes, Herman G. J. Smit, Martina Krämer, Nicole Spelten, Peter Spichtinger, Philippe Nédélec, and Andreas Wahner

Data sets

IAGOS Data Portal Ulrich Bundke, Herman Smit, Florian Berkes, Andreas Petzold, Bastien Sauvage, Philippe Nedelec, Valerie Thouret, Christoph Gerbig, Markus Hermann, Martin Gallagher, Helmut Ziereis, and Damien Boulanger

IAGOS Time series D. Boulanger, U. Bundke, H. Smit, F. Berkes, B. Sauvage, P. Nédélec, C. Gerbig, M. Hermann, M. Gallagher, H. Ziereis, V. Thouret, and A. Petzold

Short summary
The first analysis of 15 years of global-scale water vapour and relative humidity observations by passenger aircraft in the MOZAIC and IAGOS programmes resolves detailed features of water vapour and ice-supersaturated air in the mid-latitude tropopause. Key results provide in-depth insight into seasonal and regional variability and chemical signatures of ice-supersaturated air masses, including trend analyses, and show a close link to cirrus clouds and their highly important effects on climate.
Final-revised paper