Journal
ENVIRONMENTAL RESEARCH LETTERS
Volume 10, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1748-9326/10/1/014005
Keywords
jet stream; Arctic amplification; extreme weather
Funding
- National Science Foundation's Arctic System Science Program (NSF/ARCSS) [1304097]
- Directorate For Geosciences
- Office of Polar Programs (OPP) [1304097] Funding Source: National Science Foundation
- Directorate For Geosciences
- Office of Polar Programs (OPP) [1304398] Funding Source: National Science Foundation
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New metrics and evidence are presented that support a linkage between rapid Arctic warming, relative to Northern hemisphere mid-latitudes, and more frequent high-amplitude (wavy) jet-stream configurations that favor persistent weather patterns. We find robust relationships among seasonal and regional patterns of weaker poleward thickness gradients, weaker zonal upper-level winds, and a more meridional flow direction. These results suggest that as the Arctic continues to warm faster than elsewhere in response to rising greenhouse-gas concentrations, the frequency of extreme weather events caused by persistent jet-stream patterns will increase.
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