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Decadal Changes in the Interannual Variability of Heat Waves in East Asia Caused by Atmospheric Teleconnection ChangesThe heat wave in East Asia is examined by using empirical orthogonal function analysis to isolate dominant heat-wave patterns in the ground-based temperature observations over the Korean Peninsula and China and related large-scale atmospheric circulations obtained from the National Centers for Environmental Prediction–National Center for Atmospheric Research Reanalysis 1 during 1973–2012. This study focuses particularly on the interannual variability of heat waves and its decadal change. The analysis identifies two major atmospheric teleconnection patterns playing an important role in developing typical heat-wave patterns in East Asia—the Scandinavian (SCAND) and the circumglobal teleconnection (CGT) patterns, which exhibit a significant decadal change in the interannual variability in the mid-1990s. Before the mid-1990s, heat-wave occurrence was closely related to the CGT pattern, whereas the SCAND pattern is more crucial to explain heat-wave variability in the recent period. The stationary wave model experiments suggest an intensification of the SCAND pattern in the recent period driven by an increase in land–atmosphere interaction over Eurasia and decadal change in the dominant heat-wave patterns in East Asia.
Document ID
20210013121
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Nakbin Choi
(Ulsan National Institute of Science and Technology Ulsan, South Korea)
Myong-In Lee
(Ulsan National Institute of Science and Technology Ulsan, South Korea)
Dong-Hyun Cha
(Ulsan National Institute of Science and Technology Ulsan, South Korea)
Young-Kwon Lim
(Universities Space Research Association Columbia, Maryland, United States)
Kyu-Myong Kim
(Goddard Space Flight Center Greenbelt, Maryland, United States)
Date Acquired
April 2, 2021
Publication Date
January 1, 2020
Publication Information
Publication: Journal of Climate
Publisher: American Meteorological Society
Volume: 33
Issue: 4
Issue Publication Date: February 1, 2020
ISSN: 0894-8755
e-ISSN: 1520-0442
URL: https://journals.ametsoc.org/view/journals/clim/33/4/jcli-d-19-0222.1.xml
Subject Category
Geosciences (General)
Funding Number(s)
WBS: 281945.02.04.03.16
CONTRACT_GRANT: NNG11HP16A
Distribution Limits
Public
Copyright
Use by or on behalf of the US Gov. Permitted.
Technical Review
External Peer Committee
Keywords
heat wave patterns
atmospheric teleconnection
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