2019
DOI: 10.1175/jcli-d-18-0485.1
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Large-Scale Circulation Anomalies Associated with Extreme Heat in South Korea and Southern–Central Japan

Abstract: The large-scale circulation anomalies associated with extreme heat (EH) in South Korea and southern–central Japan are examined using data during the time period 1979–2016. Statistical analysis indicates that EH days in these two regions are concentrated in July and August and tend to occur simultaneously. These EH days are therefore combined to explore the physical mechanisms leading to their occurrence. The composite results indicate that the anomalous atmospheric warming during EH days is dominantly caused b… Show more

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Cited by 29 publications
(25 citation statements)
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“…All of these circulation features were observed in the July 2018 heavy precipitation event with an additional presence of Typhoon Prapiroon and a stationary short‐wave trough over Korea (Tsuguti et al, ). These notable circulation features were present during the heat wave as well (Figure c), while the upper‐level trough was replaced by a short‐wave ridge known to accompany heat waves in Korea and southern Japan (Xu et al, ).…”
Section: State Of the Sciencementioning
confidence: 96%
See 1 more Smart Citation
“…All of these circulation features were observed in the July 2018 heavy precipitation event with an additional presence of Typhoon Prapiroon and a stationary short‐wave trough over Korea (Tsuguti et al, ). These notable circulation features were present during the heat wave as well (Figure c), while the upper‐level trough was replaced by a short‐wave ridge known to accompany heat waves in Korea and southern Japan (Xu et al, ).…”
Section: State Of the Sciencementioning
confidence: 96%
“…Meteorological analysis on these 2018 events quickly emerged (JMA‐TCC, ; Kotsuki et al, ; Tsuguti et al, ), highlighting several compound factors: a strengthened subtropical anticyclone, a deepened synoptic trough, and Typhoon Prapiroon that collectively enhanced the Baiu rainband (the Japanese summer monsoon), fostering heavy precipitation. The comprehensive study of these events, conducted within a month and released by the Japan Meteorological Agency (JMA) (JMA‐TCC, ), reflected decades of knowledge of the Baiu rainband and new understanding of recent heat waves in southern Japan and Korea (Xu et al, ). Regardless, an extended forecast of this record‐breaking precipitation remains challenging, with a skillful prediction of no more than 3 days (Kotsuki et al, ).…”
mentioning
confidence: 99%
“…However, also synoptic to hemispheric-scale atmospheric circulation patterns play a pivotal role in generating long-lasting heat waves and droughts. Recent studies have therefore investigated the atmospheric dynamics mechanisms leading to persistent hot surface weather for several recent examples of extremely long-lasting heat waves (Barriopedro et al, 2011;Black et al, 2004;Dole et al, 2011;Fink et al, 2004;Parker et al, 2014;Schneidereit et al, 2012;Xu et al, 2019;Zschenderlein et al, 2018) as well as from a climatological point of view (Kornhuber et al, 2017;Röthlisberger et al, 2019).…”
Section: Introductionmentioning
confidence: 99%
“…where Y is the number of high temperature days, X 1 is the annual average temperature, representing the background of climate warming, X 2 is the subtropical high pressure ridge point index of western Pacific in summer, representing the influencing factor of large-scale circulation (Luo and Lau, 2017;Xu et al, 2019), X 3 is the F10.7 index, indicating the intensity of solar activity (data from China National Climate Center), and X 4 is the intensity of urban heat island in Beijing, representing the impact of urbanization. These X s represent several main factors influencing high temperature days.…”
Section: Discussionmentioning
confidence: 99%