Journal
ATMOSPHERIC SCIENCE LETTERS
Volume 16, Issue 4, Pages 492-499Publisher
WILEY-BLACKWELL
DOI: 10.1002/asl.587
Keywords
low-level jets; Arctic system reanalysis; sea ice; topography
Funding
- Academy of Finland [272041, 259537]
- Academy of Finland (AKA) [272041, 259537, 259537, 272041] Funding Source: Academy of Finland (AKA)
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A wintertime climatology of the occurrence and characteristics of low-level jets (LLJs) in the Northern Hemisphere mid-latitudes and polar regions was developed. A LLJ detection algorithm was applied to 11years of Arctic system reanalysis data. The highest occurrence of LLJs was associated with strong gradients in topography and with the sea-ice edge. Sea areas fully covered with sea ice also favoured the occurrence of LLJs, however, these areas, including the central Arctic, had fewer LLJs than along the sea-ice edge. LLJs also occurred frequently in the seldom studied Sea of Okhotsk area.
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