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

Xue, Daokai; Lu, Jian; Sun, Lantao; Chen, Gang; Zhang, Yaocun

doi:10.1002/2017GL072649

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

i

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

2017
By Xue, Daokai ; Lu, Jian ; Sun, Lantao ; ...
Source: Geophysical Research Letters 44(7): 3299-3308, 2017

[PDF-2.51 MB]

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Journal Title:

Geophysical Research Letters
Personal Author:

Xue, Daokai ; Lu, Jian ; Sun, Lantao ; Chen, Gang ; Zhang, Yaocun

Xue, Daokai ; Lu, Jian ; Sun, Lantao ; Chen, Gang ; Zhang, Yaocun Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; PSL (Physical Sciences Laboratory) ; CPO (Climate Program Office) ; CIRES (Cooperative Institute for Research in Environmental Sciences)

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; PSL (Physical Sciences Laboratory) ; CPO (Climate Program Office) ; CIRES (Cooperative Institute for Research in Environmental Sciences) Less -
Description:

In an attempt to resolve the controversy as to whether Arctic sea ice loss leads to more midlatitude extremes, a metric of finite‐amplitude wave activity is adopted to quantify the midlatitude wave activity and its change during the period of the drastic Arctic sea ice decline in both ERA Interim reanalysis data and a set of Atmospheric Model Intercomparison Project‐type of model experiments. Neither the ensemble mean response to the trend in the SST nor that to the declining trend of Arctic sea ice can replicate the sizable midlatitude‐wide increase 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 anticyclonic wave activity (LAWA) and atmospheric general circulation model experiments lend evidence to a possible linkage between the sea ice loss near the Barents and Kara Seas and the increasing trend of LAWA over the northern part of the central Eurasia and the associated impacts on the frequency of temperature extremes.
Keywords:

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Climate Change Sea Ice
Source:

Geophysical Research Letters 44(7): 3299-3308, 2017
DOI:

https://doi.org/10.1002/2017GL072649
Document Type:

Journal Article
Place as Subject:

Arctic Regions ; Eurasia

Arctic Regions ; Eurasia Less -
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urn:sha256:9dfa0bbdc75d713d3ce02a22a967b594ef513d2269920682e3e3724615e1c265
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Local increase of anticyclonic wave activity over northern Eurasia under amplified Arctic warming

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