Weather and Climate Dynamics
Weather and Climate Dynamics
WCD
Articles | Volume 2, issue 3
Articles | Volume 2, issue 3
https://doi.org/10.5194/wcd-2-819-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wcd-2-819-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 2, issue 3
Research article
 | 
31 Aug 2021
Research article |  | 31 Aug 2021

Oceanic moisture sources contributing to wintertime Euro-Atlantic blocking

Ayako Yamamoto, Masami Nonaka, Patrick Martineau, Akira Yamazaki, Young-Oh Kwon, Hisashi Nakamura, and Bunmei Taguchi

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Short summary
While the key role of moist processes in blocking has recently been highlighted, their moisture sources remain unknown. Here, we investigate moisture sources for wintertime Euro-Atlantic blocks using a Lagrangian method. We show that the Gulf Stream, Kuroshio, and their extensions, along with the northeast of Hawaii, act as the primary moisture sources and springboards for particle ascent. We find that the evolution of the particle properties is sensitive to the moisture sources.
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