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

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Cited articles

Aemisegger, F.: On the link between the North Atlantic storm track and precipitation deuterium excess in Reykjavik, Atmos. Sci. Lett., 19, e865, https://doi.org/10.1002/asl.865, 2018. a
Aemisegger, F. and Papritz, L.: A climatology of strong large-scale ocean evaporation events, Part I: Identification, global distribution, and associated climate conditions, J. Clim., 31, 7287–7312, https://doi.org/10.1175/JCLI-D-17-0591.1, 2018. a
Aemisegger, F. and Sjolte, J.: A climatology of strong large-scale ocean evaporation events, Part II: Relevance for the deuterium excess signature of the evaporation flux, J. Clim., 31, 7313–7336, https://doi.org/10.1175/JCLI-D-17-0592.1, 2018. a, b
Aemisegger, F., Sturm, P., Graf, P., Sodemann, H., Pfahl, S., Knohl, A., and Wernli, H.: Measuring variations of δ18O and δ2H in atmospheric water vapour using two commercial laser-based spectrometers: An instrument characterisation study, Atmos. Meas. Tech., 5, 1491–1511, https://doi.org/10.5194/amt-5-1491-2012, 2012. a
Aemisegger, F., Spiegel, J. K., Pfahl, S., Sodemann, H., Eugster, W., and Wernli, H.: Isotope meteorology of cold front passages: A case study combining observations and modeling: Water isotopes during cold fronts, Geophys. Res. Lett., 42, 5652–5660, https://doi.org/10.1002/2015GL063988, 2015. a
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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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