Arctic-associated increased fluctuations of midlatitude winter temperature in the 1.5° and 2.0° warmer world
Journal Article
·
· npj Climate and Atmospheric Science
- Gwangju Inst. of Science and Technology (Korea, Republic of); Gwangju Inst. of Science and Technology (Korea, Republic of)
- Utah State University, Logan, UT (United States)
- Seoul National University (Korea, Republic of)
- Chonnam National University, Gwangju (Korea, Republic of)
- Pukyong National University, Busan (Korea, Republic of)
- Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of)
- Gwangju Inst. of Science and Technology (Korea, Republic of)
In recent decades, the interior regions of Eurasia and North America have experienced several unprecedentedly cold winters despite the global surface air temperature increases. One possible explanation of these increasing extreme cold winters comes from the so-called Warm Arctic Cold Continent (WACC) pattern, reflecting the effects of the amplified Arctic warming in driving the circulation change over surrounding continents. This study analyzed reanalysis data and model experiments forced by different levels of anthropogenic forcing. It is found that WACC exists on synoptic scales in observations, model’s historical and even future runs. In the future, the analysis suggests a continued presence of WACC but with a slightly weakened cold extreme due to the overall warming. Warm Arctic events under the warmer climate will be associated with not only a colder continent in East Asia but also a warmer continent, depending on the teleconnection process that is also complicated by the warmer Arctic. Such an increasingly association suggests a reduction in potential predictability of the midlatitude winter anomalies.
- Research Organization:
- University of California, Davis, CA (United States)
- Sponsoring Organization:
- National Research Foundation of Korea (NRF); USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0016605
- OSTI ID:
- 2420579
- Journal Information:
- npj Climate and Atmospheric Science, Journal Name: npj Climate and Atmospheric Science Journal Issue: 1 Vol. 6; ISSN 2397-3722
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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