| 库尔勒1959-2008年冬季气温及负积温变化特征 |
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| 引用本文： | 周雪英,吉春容,李晓川.库尔勒1959-2008年冬季气温及负积温变化特征[J].新疆气象,2009,3(4):39-42. |
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| 作者姓名： | 周雪英 吉春容 李晓川 |
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| 作者单位： | 周雪英,李晓川(巴州气象台,新疆,库尔勒,841000);吉春容(中国气象局乌鲁木齐沙漠气象研究所,新疆,乌鲁木齐,830002) |
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| 摘 要： | 利用库尔勒市近50a冬季逐日气温资料，分析了库尔勒冬季日平均气温、最低气温、负积温以及低温持续日数的变化趋势和特征，结果表明：库尔勒冬季平均气温自1985年开始发生增暖突变，最低气温、极端最低气温均在波动中逐渐上升，冬季增温主要体现在最低气温和2月平均气温的显著偏高，冬季气温最暖阶段在20世纪90年代；冬季负积温增暖变化早于冬季气温，冬季≤0℃低温持续日数明显减少，但近8a冬季≤-15℃的低温寒冷日数较20世纪80、90年代有明显增加，从而导致近8a负积温绝对值的增加。
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| 关 键 词： | 库尔勒 冬季气温 负积温 变化特征 |
The Changing Characteristics of Winter Temperature and Negative Accumulated temperature in Kuerle during 1959-2008 |
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| ZHOU Xue-ying,JI Chun-rong and LI Xiao-chuan.The Changing Characteristics of Winter Temperature and Negative Accumulated temperature in Kuerle during 1959-2008[J].Bimonthly of Xinjiang Meteorology,2009,3(4):39-42. |
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| Authors: | ZHOU Xue-ying JI Chun-rong and LI Xiao-chuan |
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| Institution: | ZHOU Xue-ying ,JI Chun-rong, LI Xiao-chuan(1. Bazhou Meteorological Bureau, Kuerle 841000, China;2. Institute of Desert Meteorology, CMA, Urumqi 830002, China) |
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| Abstract: | Based on the winter daily temperature data in recent 50 years of Kuerle, the change trends and characteristics of winter daily average temperature, minimum temperature, negative accumulated temperature and low temperature durative days are analyzed. The results showed that the winter average temperature indicated a warm break since 1985 in Kuerle, the minimum temperature and extreme-low temperature tended to rise gradually with fluctuation. The warming in winter was embodied mainly by the minimum temperature and the average temperature in Feb. on the high side remarkably. In recent 50 years, the warmest stage of winter temperature was during 1990s. The period of warming change of negative accumulated temperature is earlier than the winter temperature, and the durative days of low temperature with ≤0℃ was decreasing obviously. The durative days of low temperature with ≤-15℃ during 1959-2008 tended to rise remarkably than 1980s and 1990s, thereby increased the absolute value of negative accumulated temperature in recent 8a. |
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| Keywords: | Kuerle winter temperature negative accumulated temperature changing characteristics |
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