Adaptive Change in Intra-Winter Distribution of Relatively Cold Events to East Asian Warming
For the past few decades, daily winter temperatures over East Asia have been higher and less variable. Generally, these simple temperature-distribution shifts should lead to a decrease in the occurrence of cold extremes, but observations of the changes in the extremes are often complicated. In the p...
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| Format: | Article |
| Language: | English |
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Springer
2009-01-01
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| Series: | Terrestrial, Atmospheric and Oceanic Sciences |
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| Online Access: |
http://tao.cgu.org.tw/images/attachments/v206p799.pdf
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| _version_ | 1818139663960899584 |
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| author | Yong-Sang Choi Chang-Hoi Ho Dao-Yi Gong Jee-Hoon Jeong Tae-Won Park |
| author_facet | Yong-Sang Choi Chang-Hoi Ho Dao-Yi Gong Jee-Hoon Jeong Tae-Won Park |
| author_sort | Yong-Sang Choi |
| collection | DOAJ |
| description | For the past few decades, daily winter temperatures over East Asia have been higher and less variable. Generally, these simple temperature-distribution shifts should lead to a decrease in the occurrence of cold extremes, but observations of the changes in the extremes are often complicated. In the present study, the change in the occurrence of relatively cold events (daily temperature anomaly, _?T_n-2_ã_nfor that season) in each winter monsoon over East Asia was examined using ground observations of daily temperature for the period 1954 - 2006. The time-mean temperature for each winter was subtracted to remove the interannual variability and long-term trend. Our analyses reveal that the intraseasonal temperature distribution over East Asia has changed with a negative skew, and the frequency of the relatively cold events has slightly increased (by 0.09 days per decade) over the past few decades, on an average, for the entire analysis domain (east of 105°E, 122 stations). In particular, the increase occurs me dominantly (82% of the total stations) in regions north of 40°N where a stronger warming has progressed. The frequency of relatively cold events is found to be significantly correlated with the variance of the Siberian high and the mean of the Arc tic Oscillation. The increasing trend in the frequency of relatively cold events may serve to partly countervail the decrease (-1.12 days per decade) in the frequency of absolute cold events (daily temperature anomaly, _?T_n2_ã_noverall) across the entire observation period. |
| first_indexed | 2024-12-11T10:31:41Z |
| format | Article |
| id | doaj.art-392acc302466457090aa6550cce69c6a |
| institution | Directory Open Access Journal |
| issn | 1017-0839 2311-7680 |
| language | English |
| last_indexed | 2024-12-11T10:31:41Z |
| publishDate | 2009-01-01 |
| publisher | Springer |
| record_format | Article |
| series | Terrestrial, Atmospheric and Oceanic Sciences |
| spelling | doaj.art-392acc302466457090aa6550cce69c6a2022-12-22T01:10:55ZengSpringerTerrestrial, Atmospheric and Oceanic Sciences1017-08392311-76802009-01-0120679910.3319/TAO.2008.11.20.01(A)879Adaptive Change in Intra-Winter Distribution of Relatively Cold Events to East Asian WarmingYong-Sang ChoiChang-Hoi HoDao-Yi GongJee-Hoon JeongTae-Won ParkFor the past few decades, daily winter temperatures over East Asia have been higher and less variable. Generally, these simple temperature-distribution shifts should lead to a decrease in the occurrence of cold extremes, but observations of the changes in the extremes are often complicated. In the present study, the change in the occurrence of relatively cold events (daily temperature anomaly, _?T_n-2_ã_nfor that season) in each winter monsoon over East Asia was examined using ground observations of daily temperature for the period 1954 - 2006. The time-mean temperature for each winter was subtracted to remove the interannual variability and long-term trend. Our analyses reveal that the intraseasonal temperature distribution over East Asia has changed with a negative skew, and the frequency of the relatively cold events has slightly increased (by 0.09 days per decade) over the past few decades, on an average, for the entire analysis domain (east of 105°E, 122 stations). In particular, the increase occurs me dominantly (82% of the total stations) in regions north of 40°N where a stronger warming has progressed. The frequency of relatively cold events is found to be significantly correlated with the variance of the Siberian high and the mean of the Arc tic Oscillation. The increasing trend in the frequency of relatively cold events may serve to partly countervail the decrease (-1.12 days per decade) in the frequency of absolute cold events (daily temperature anomaly, _?T_n2_ã_noverall) across the entire observation period. http://tao.cgu.org.tw/images/attachments/v206p799.pdf Relatively cold eventTemperature distributionGlobal warmingEast Asian winter monsoonEast Asia |
| spellingShingle | Yong-Sang Choi Chang-Hoi Ho Dao-Yi Gong Jee-Hoon Jeong Tae-Won Park Adaptive Change in Intra-Winter Distribution of Relatively Cold Events to East Asian Warming Terrestrial, Atmospheric and Oceanic Sciences Relatively cold event Temperature distribution Global warming East Asian winter monsoon East Asia |
| title | Adaptive Change in Intra-Winter Distribution of Relatively Cold Events to East Asian Warming |
| title_full | Adaptive Change in Intra-Winter Distribution of Relatively Cold Events to East Asian Warming |
| title_fullStr | Adaptive Change in Intra-Winter Distribution of Relatively Cold Events to East Asian Warming |
| title_full_unstemmed | Adaptive Change in Intra-Winter Distribution of Relatively Cold Events to East Asian Warming |
| title_short | Adaptive Change in Intra-Winter Distribution of Relatively Cold Events to East Asian Warming |
| title_sort | adaptive change in intra winter distribution of relatively cold events to east asian warming |
| topic | Relatively cold event Temperature distribution Global warming East Asian winter monsoon East Asia |
| url |
http://tao.cgu.org.tw/images/attachments/v206p799.pdf
|
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