| 1961—2010年山西省极端气温年均发生频率的时空特征分析 |
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| 引用本文： | 秦秀丽.1961—2010年山西省极端气温年均发生频率的时空特征分析[J].新疆气象,2014,8(2):59-64. |
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| 作者姓名： | 秦秀丽 |
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| 作者单位： | 运城市气象局 |
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| 基金项目： | 山西省气象局2014年度课题“山西省极端温度的年际年代际异常特征及其成因分析”（SXKYBQH20147851）资助. |
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| 摘 要： | 利用山西省61个气象站点逐日最高温度、最低温度资料，采用百分位值定义法、Mann原Kendall突变检验法和Morlet小波变换等方法，分析了山西省近50 a极端温度事件年均发生频率的时空特征，结果表明：1961年以来，山西省极端高温事件年均发生频率呈显著增加趋势，趋势为6.1 d/10 a，与此同时，极端低温事件年均发生频率呈显著减少趋势，且极端气温事件的变化存在明显的区域差异；极端高温和极端低温年均发生频率均发生了突变现象，变化趋势均在20世纪90年代以来更加显著；极端高温和极端低温事件年均发生频率均呈显著波动变化，在整个研究期间极端高温存在5～6a、4～8a显著周期，极端低温存在4～5a显著周期。
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| 关 键 词： | 极端高温 极端低温 时空变化 山西 |
| 收稿时间： | 8/7/2013 12:00:00 AM |
| 修稿时间： | 2013/9/26 0:00:00 |
Temporal and Spatial Characteristics of Extreme Temperature Events |
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| QinXiuli.Temporal and Spatial Characteristics of Extreme Temperature Events[J].Bimonthly of Xinjiang Meteorology,2014,8(2):59-64. |
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| Authors: | QinXiuli |
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| Institution: | Yuncheng City Meteorological Bureau of Shanxi Province |
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| Abstract: | Based on the 61 meteorological station date of daily maximum temperature and minimum temperature in Shanxi province and using percentile values define the method,Mann-Kendall mutationg test and wavelet analysis method,the temporal and spatial characteristics of extreme temperature events were studied for recent 50 years in Shanxi Province . The results showed that annual extreme high temperature frequency have been increasing since 1961 and its trend was 6.1d/10a, while there was a decreasing trend in extreme low temperature frequency.Meantime, there were obvious spatial variations in both annual extreme high and low temperature frequency.For recent 50 years, the abruptions were found in all stations in both annual extreme high and low temperature frequency and their trends were more significant since 1990s. In addition, fluctuation changes were found with a 5-6 years and 4-8 years period in annual extreme high and 4-5 years period in low temperature frequency. |
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| Keywords: | extreme temperature events frequency spatial characteristics temporary trend |
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