Articles | Volume 15, issue 6
Clim. Past, 15, 2053–2065, 2019
https://doi.org/10.5194/cp-15-2053-2019
Clim. Past, 15, 2053–2065, 2019
https://doi.org/10.5194/cp-15-2053-2019

Research article 19 Dec 2019

Research article | 19 Dec 2019

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

Angela-Maria Burgdorf et al.

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Latest update: 04 Dec 2021
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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.