Impact of mountain-wave-induced temperature fluctuations on the occurrence of polar stratospheric ice clouds: a statistical analysis based on MIPAS observations and ERA5 data

Zou, Ling; Spang, Reinhold; Griessbach, Sabine; Hoffmann, Lars; Khosrawi, Farahnaz; Müller, Rolf; Tritscher, Ines

doi:https://doi.org/10.5194/acp-24-11759-2024

Articles | Volume 24, issue 20

https://doi.org/10.5194/acp-24-11759-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-24-11759-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 20

Research article

|

23 Oct 2024

Research article |

| 23 Oct 2024

Impact of mountain-wave-induced temperature fluctuations on the occurrence of polar stratospheric ice clouds: a statistical analysis based on MIPAS observations and ERA5 data

Ling Zou, Reinhold Spang, Sabine Griessbach, Lars Hoffmann, Farahnaz Khosrawi, Rolf Müller, and Ines Tritscher

Data sets

MIPAS/Envisat Observations of Polar Stratospheric Clouds Reinhold Spang et al. https://doi.org/10.17616/R3BN26

Model code and software

slcs-jsc/mptrac: v2.2 Lars Hoffmann et al. https://doi.org/10.5281/zenodo.5714528

Short summary

This study provided estimates of the occurrence of ice polar stratospheric clouds (PSCs) observed by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) and their connection with temperatures above the frost point (T_ice) using a Lagrangian model derived from ERA5. We found that ice PSCs above T_ice with temperature fluctuations along the backward trajectory are 33 % in the Arctic and 9 % in the Antarctic. This quantitative assessment enhances our understanding of ice PSCs.