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Linkages Between Arctic Warming and Mid-Latitude Weather Patterns - Summary of a Workshop (Paperback)
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Linkages Between Arctic Warming and Mid-Latitude Weather Patterns - Summary of a Workshop (Paperback)
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The Arctic has been undergoing significant changes in recent years.
Average temperatures are rising twice as fast as they are elsewhere
in the world. The extent and thickness of sea ice is rapidly
declining. Such changes may have an impact on atmospheric
conditions outside the region. Several hypotheses for how Arctic
warming may be influencing mid-latitude weather patterns have been
proposed recently. For example, Arctic warming could lead to a
weakened jet stream resulting in more persistent weather patterns
in the mid-latitudes. Or Arctic sea ice loss could lead to an
increase of snow on high-latitude land, which in turn impacts the
jet stream resulting in cold Eurasian and North American winters.
These and other potential connections between a warming Arctic and
mid-latitude weather are the subject of active research. Linkages
Between Arctic Warming and Mid-Latitude Weather Patterns is the
summary of a workshop convened in September 2013 by the National
Research Council to review our current understanding and to discuss
research needed to better understand proposed linkages. A diverse
array of experts examined linkages between a warming Arctic and
mid-latitude weather patterns. The workshop included presentations
from leading researchers representing a range of views on this
topic. The workshop was organized to allow participants to take a
global perspective and consider the influence of the Arctic in the
context of forcing from other components of the climate system,
such as changes in the tropics, ocean circulation, and mid-latitude
sea surface temperature. This report discusses our current
understanding of the mechanisms that link declines in Arctic sea
ice cover, loss of high-latitude snow cover, changes in
Arctic-region energy fluxes, atmospheric circulation patterns, and
the occurrence of extreme weather events; possible implications of
more severe loss of summer Arctic sea ice upon weather patterns at
lower latitudes; major gaps in our understanding, and observational
and/or modeling efforts that are needed to fill those gaps; and
current opportunities and limitations for using Arctic sea ice
predictions to assess the risk of temperature/precipitation
anomalies and extreme weather events over northern continents.
Table of Contents Front Matter Linkages Between Arctic Warming and
MidLatitude Weather Patterns References Appendix A: Speaker
Abstracts Appendix B: Workshop Agenda and Participant List Appendix
C: Table and Schematic Presented by Session 1 Speakers Appendix D:
Acronyms and Initialisms Appendix E: Biographical Sketches of
Planning Committee Members
General
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