reference : Impact of declining Arctic sea ice on winter snowfall

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Bibliographic fields
reftype Journal Article
Abstract While the Arctic region has been warming strongly in recent decades, anomalously large snowfall in recent winters has affected large parts of North America, Europe, and east Asia. Here we demonstrate that the decrease in autumn Arctic sea ice area is linked to changes in the winter Northern Hemisphere atmospheric circulation that have some resemblance to the negative phase of the winter Arctic oscillation. However, the atmospheric circulation change linked to the reduction of sea ice shows much broader meridional meanders in midlatitudes and clearly different interannual variability than the classical Arctic oscillation. This circulation change results in more frequent episodes of blocking patterns that lead to increased cold surges over large parts of northern continents. Moreover, the increase in atmospheric water vapor content in the Arctic region during late autumn and winter driven locally by the reduction of sea ice provides enhanced moisture sources, supporting increased heavy snowfall in Europe during early winter and the northeastern and midwestern United States during winter. We conclude that the recent decline of Arctic sea ice has played a critical role in recent cold and snowy winters.
Author Liu, J.; Curry, J. A.; Wang, H.; Song, M.; Horton, R. M.
DOI 10.1073/pnas.1114910109
Date February 27, 2012
ISSN 1091-6490
Issue 11
Journal Proceedings of the National Academy of Sciences of the United States of America
Pages 4074-4079
Title Impact of declining Arctic sea ice on winter snowfall
Volume 109
Year 2012
Bibliographic identifiers
.reference_type 0
_chapter ["Ch. 16: Northeast FINAL","Ch. 2: Our Changing Climate FINAL","RF 1"]
_record_number 886
_uuid 736c24a5-149a-4d5b-88c5-e729af8c3b0c