Articles | Volume 22, issue 15
https://doi.org/10.5194/acp-22-10353-2022
https://doi.org/10.5194/acp-22-10353-2022
Research article
 | 
12 Aug 2022
Research article |  | 12 Aug 2022

Disentangling the impact of air–sea interaction and boundary layer cloud formation on stable water isotope signals in the warm sector of a Southern Ocean cyclone

Iris Thurnherr and Franziska Aemisegger

Data sets

Calibrated data of stable water isotope measurements in water vapour at 13.5 m a.s.l., made in the austral summer of 2016/2017 around the Southern Ocean during the Antarctic Circumnavigation Expedition (ACE) I. Thurnherr and F. Aemisegger https://doi.org/10.5281/zenodo.3250790

Numerical weather simulations using COSMOiso from December 2016–March 2017 along the ship track of the Antarctic Circumnavigation Expedition I. Thurnherr, L. Jansing, F. Aemisegger, and H. Wernli https://doi.org/10.3929/ethz-b-000445744

Vertical profiles of Doppler spectra of hydrometeors from a Micro Rain Radar recorded during the austral summer of 2016/2017 in the Southern Ocean on the Antarctic Circumnavigation Expedition (ACE) J. Gehring, I. Thurnherr, and P. Graf https://doi.org/10.5281/zenodo.3929289

Physical and biogeochemical oceanography data from underway measurements with an AquaLine Ferrybox during the Antarctic Circumnavigation Expedition (ACE) F. A. Haumann, C. Robinson, J. Thomas, J. Hutchings, C. Pina Estany, A. Tarasenko, F. Gerber, and K. Leonard https://doi.org/10.5281/zenodo.3660852

Quality-checked meteorological data from the Southern Ocean collected during the Antarctic Circumnavigation Expedition from December 2016 to April 2017 S. Landwehr, J. Thomas, I. Gorodetskaya, I. Thurnherr, C. Robinson, and J. Schmale https://doi.org/10.5281/zenodo.3379590

ACE Zenodo Community Collection J. Thomas https://zenodo.org/communities/spi-ace/

Model code and software

Python script of air parcel process models to simulate changes in stable water isotopologues along trajectories (1.0) I. Thurnherr and F. Aemisegger https://doi.org/10.5281/zenodo.6979911

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Short summary
Stable water isotopes in marine boundary layer vapour are strongly influenced by the strength of air–sea fluxes. Here, we investigate a distinct vapour isotope signal observed in the warm sector of Southern Ocean cyclones. Single-process air parcel models are used together with high-resolution isotope-enabled simulations with the weather prediction model COSMOiso to improve our understanding of the importance of air–sea fluxes for the moisture cycling in the context of extratropical cyclones.
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