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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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초록· 키워드
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This study explores the synoptic characteristics of cold days over South Korea and their relationship with large-scale climate variability. The cold day, which is different from cold surge, is defined when daily-mean surface air temperature, averaged over 11 KMA stations, is colder than 1-percentile temperature in each year by considering its long-term trend over 1960~2012. Such event is detected by quantile regression and the related synoptic patterns are identified in reanalysis data. Composite geopotential height anomalies at 500 hPa show that cold days are often preceded by positive anomalies in high latitudes and negative anomalies in midlatitudes on the west of Korea. While the formers are quasi-stationary and quasi-barotropic, and often qualified as blocking highs, the latters are associated with transient cyclones. At cold days, the north-south dipole in geopotential height anomalies becomes west-east dipole in the lower troposphere as high-latitude anticyclone expands equatorward to the Northern China and mid-latitude cyclone moves eastward and rapidly develops over the East Sea. The resulting northerlies cause cold days in Korea. By performing composite analyses of largescale climate indices, it is further found that the occurrence of these cold days are preferable when the Arctic Oscillation is in its negative phase and/or East Asian monsoon circulation and Siberian high are anomalously strong.
목차
Abstract
1. 서론
2. 자료
3. 분석 방법
4. 혹한일 선정
5. 합성장 분석
6. 광역인자 분석
7. 요약 및 결론
REFERENCES
참고문헌 (34)
참고문헌 신청
[학술지(정기간행물)] - Barnston, A. G. / 1987 / Classification., seasonality and persistence of low-frequency atmospheric circulation patterns / Mon. Wea. Rev 115 (6) : 1083 ~ 1126
[학술지(정기간행물)] - Chen, T. -C. / 2004 / Interannual variation of the East Asian cold surge activity / J. Climate 17 : 401 ~ 413
[학술지(정기간행물)] - Dole, R. M. / 1983 / Persistent anomalies of the extratropical Northern Hemisphere wintertime circulation : Geographical distribution and regional persistence characteristics / Mon. Wea. Rev 111 : 1567 ~ 1586
[학술지(정기간행물)] - Dunn-Sigouin, E. / 2013 / Northern Hemisphere blocking frequency and duration in the CMIP5 models / J. Geophys. Res. : Atmospheres 118 : 1179 ~ 1188
[학술지(정기간행물)] - Enfield, D. B. / 2001 / The Atlantic multidecadal oscillation and its relation to rainfall and river flows in the continental U / S. Geophys. Res. Lett 28 (10) : 2077 ~ 2080
[학술지(정기간행물)] - Chen, T. -C. / 2004 / Interannual variation of the East Asian cold surge activity / J. Climate 17 : 401 ~ 413
[학술지(정기간행물)] - Dole, R. M. / 1983 / Persistent anomalies of the extratropical Northern Hemisphere wintertime circulation : Geographical distribution and regional persistence characteristics / Mon. Wea. Rev 111 : 1567 ~ 1586
[학술지(정기간행물)] - Dunn-Sigouin, E. / 2013 / Northern Hemisphere blocking frequency and duration in the CMIP5 models / J. Geophys. Res. : Atmospheres 118 : 1179 ~ 1188
[학술지(정기간행물)] - Enfield, D. B. / 2001 / The Atlantic multidecadal oscillation and its relation to rainfall and river flows in the continental U / S. Geophys. Res. Lett 28 (10) : 2077 ~ 2080
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UCI(KEPA) : I410-ECN-0101-2016-453-001958829