Weather and Climate Dynamics
Weather and Climate Dynamics
WCD
Articles | Volume 6, issue 4
Articles | Volume 6, issue 4
https://doi.org/10.5194/wcd-6-1831-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wcd-6-1831-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 6, issue 4
Research article
 | 
17 Dec 2025
Research article |  | 17 Dec 2025

A climatology of atmospheric rivers over Scandinavia and associated precipitation

Erik Holmgren and Hans W. Chen

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Arabzadeh, A., Ehsani, M. R., Guan, B., Heflin, S., and Behrangi, A.: Global Intercomparison of Atmospheric Rivers Precipitation in Remote Sensing and Reanalysis Products, J. Geophys. Res.-Atmos., 125, e2020JD033021, https://doi.org/10.1029/2020JD033021, 2020. a
Bahmani, B., Moseley, B., Vattani, A., Kumar, R., and Vassilvitskii, S.: Scalable K-Means++, arXiv [preprint], https://doi.org/10.48550/arXiv.1203.6402, 29 March 2012. a
Bao, J.-W., Michelson, S. A., Neiman, P. J., Ralph, F. M., and Wilczak, J. M.: Interpretation of Enhanced Integrated Water Vapor Bands Associated with Extratropical Cyclones: Their Formation and Connection to Tropical Moisture, Mon. Weather Rev., 134, 1063–1080, https://doi.org/10.1175/MWR3123.1, 2006. a
Collow, A. B. M., Shields, C. A., Guan, B., Kim, S., Lora, J. M., McClenny, E. E., Nardi, K., Payne, A., Reid, K., Shearer, E. J., Tomé, R., Wille, J. D., Ramos, A. M., Gorodetskaya, I. V., Leung, L. R., O'Brien, T. A., Ralph, F. M., Rutz, J., Ullrich, P. A., and Wehner, M.: An Overview of ARTMIP's Tier 2 Reanalysis Intercomparison: Uncertainty in the Detection of Atmospheric Rivers and Their Associated Precipitation, J. Geophys. Res.-Atmos., 127, e2021JD036, https://doi.org/10.1029/2021JD036155, 2022. a, b
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In this paper, we present a new study on atmospheric rivers (ARs) over Scandinavia and how they influence the regional precipitation. Although ARs are fairly well studied in other parts of the world, their influence on the Scandinavian climate remains less explored. Our results show that although ARs occur relatively infrequently over Scandinavia, they exert a large influence on the regional precipitation, contributing up to 40 % of the annual precipitation.
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