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Title: Local increase of anticyclonic wave activity over northern Eurasia under amplified Arctic warming

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1002/2017GL072649· OSTI ID:1356503
 [1]; ORCiD logo [2]; ORCiD logo [3];  [4]; ORCiD logo [1]
  1. Nanjing Univ. (China)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  3. Univ. of Colorado, Boulder, CO (United States); National Oceanic and Atmospheric Administration (NOAA), Boulder, CO (United States)
  4. Univ. of California, Los Angeles, CA (United States)

In an attempt to resolve the controversy as to whether Arctic sea ice loss leads to more mid-latitude extremes, a metric of finite-amplitude wave activity is adopted to quantify the midlatitude wave activity and its change during the observed period of the drastic Arctic sea ice decline in both ERA Interim reanalysis data and a set of AMIP-type of atmospheric model experiments. Here, neither the experiment with the trend in the SST or that with the declining trend of Arctic sea ice can simulate the sizable midlatitude-wide reduction in the total wave activity (Ae) observed in the reanalysis, leaving its explanation to the atmospheric internal variability. On the other hand, both the diagnostics of the flux of the local wave activity and the model experiments lend evidence to a possible linkage between the sea ice loss near the Barents and Kara seas and the increasing trend of anticyclonic local wave activity over the northern part of the central Eurasia and the associated impacts on the frequency of temperature extremes.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830; SC0016117
OSTI ID:
1356503
Alternate ID(s):
OSTI ID: 1402148
Report Number(s):
PNNL-SA-125601; KP1703010; KP1703010
Journal Information:
Geophysical Research Letters, Vol. 44, Issue 7; ISSN 0094-8276
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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Cited By (5)

Large‐scale meteorological control on the spatial pattern of wintertime PM 2.5 pollution over China journal August 2019
How well do current climate models simulate the linkage between Arctic warming and extratropical cold winters? journal April 2019
Large-Scale Atmospheric Control on Non-Gaussian Tails of Midlatitude Temperature Distributions journal September 2018
The Linkage Between Arctic Sea Ice and Midlatitude Weather: In the Perspective of Energy journal October 2018
Extreme Wet‐Bulb Temperatures in China: The Significant Role of Moisture journal November 2019