Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 24, issue 6
Articles | Volume 24, issue 6
https://doi.org/10.5194/acp-24-3883-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/acp-24-3883-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 24, issue 6
Research article
 | 
02 Apr 2024
Research article |  | 02 Apr 2024

Thermodynamic and cloud evolution in a cold-air outbreak during HALO-(AC)3: quasi-Lagrangian observations compared to the ERA5 and CARRA reanalyses

Benjamin Kirbus, Imke Schirmacher, Marcus Klingebiel, Michael Schäfer, André Ehrlich, Nils Slättberg, Johannes Lucke, Manuel Moser, Hanno Müller, and Manfred Wendisch

Supplement

https://doi.org/10.5194/acp-24-3883-2024-supplement

Data sets

ac3airborne (v0.9.1) Mario Mech et al. https://doi.org/10.5281/zenodo.7305585

Arctic regional reanalysis on model levels from 1991 to present H. Schyberg et al. https://doi.org/10.24381/cds.d29ad2c6

Arctic regional reanalysis on pressure levels from 1991 to present H. Schyberg et al. https://doi.org/10.24381/cds.e3c841ad

Arctic regional reanalysis on single levels from 1991 to present H. Schyberg et al. https://doi.org/10.24381/cds.713858f6

ERA5-hourly data on pressure levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.bd0915c6

ERA5-hourly data on single levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.adbb2d47

Nevzorov LWC and TWC data from the HALO-AC3 campaign in March and April 2022 Johannes Lucke et al. https://doi.org/10.1594/PANGAEA.963628

Two-dimensional cloud-top and surface brightness temperature with 1 Hz temporal resolution derived at flight altitude from VELOX during the HALO-(AC)3 field campaign Michael Schäfer et al. https://doi.org/10.1594/PANGAEA.963401

Model code and software

Python implementation of the COARE 3.5 Bulk Air-Sea Flux algorithm Ludovic Bariteau et al. https://doi.org/10.5281/zenodo.5110991

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Short summary
A research aircraft is used to track the changes in air temperature, moisture, and cloud properties for air that moves from cold Arctic sea ice onto warmer oceanic waters. The measurements are compared to two reanalysis models named ERA5 and CARRA. The biggest differences are found for air temperature over the sea ice and moisture over the ocean. CARRA data are more accurate than ERA5 because they better simulate the sea ice, the transition from sea ice to open ocean, and the forming clouds. 
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HALO-(AC)3 – an airborne campaign to study air...
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