Climate of the Past
Climate of the Past
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Articles | Volume 15, issue 6
Articles | Volume 15, issue 6
https://doi.org/10.5194/cp-15-2053-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-15-2053-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 6
Research article
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19 Dec 2019
Research article | Highlight paper |  | 19 Dec 2019

Two types of North American droughts related to different atmospheric circulation patterns

Angela-Maria Burgdorf, Stefan Brönnimann, and Jörg Franke

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Short summary
The western USA is frequently affected by multiannual summer droughts. They can be separated into two groups with distinct spatial patterns. This study analyzes the atmospheric circulation during multiannual droughts in a new 3-D climate reconstruction. We confirm two distinct drought types differing with respect to atmospheric circulation as well as sea surface temperatures. Our results suggest that both the Pacific and the extratropical North Atlantic region affect North American droughts.
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