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近40年西安“数九”时节气温变化特征及突变分析

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利用西安1971~2010年逐日气温、气压、最大风速资料,采用Mann-Kendall法、F检验法分析了西安数九期间平均气温和日最低气温变化特征。结果发现:西安冬季寒冷的时段出现在“三九”至“四九”之间,最冷时段出现于“三九”,“三九”期间日平均气温为-0.01益,日最低气温为-3.62益;西安“一九”至“三九”期间平均气温和最低气温要素处于降温趋势,其他各“九”气温处于上升趋势;西安“数九”节气平均气温和日最低气温随年际变化均呈增温趋势,其中,平均气温在80年代发生转温突变,于1993年之后出现显著增温,日最低气温于2005年之后出现显著增温。
The Characteristics and Mutation Analysis of Temperature Variation during the Period of Shu Jiu in Xi’an in Recent 40 Years
By using the daily temperature, barometric pressure, maximum wind speed data from 1971 to 2010 of Xi’an with Mann-Kendall method and F test applied, the characteristics of average temperature and daily minimum temperature variation in the period of Shu Jiu in Xi’an were analyzed. We found that the cold period in winter in Xi'an appeared between the San Jiu and Si Jiu, and the coldest period was San Jiu. During San Jiu, the daily average temperature was -0.01℃, and daily minimum temperature was -3.62 ℃. The average and minimum temperatures from Yi Jiu to San Jiu in Xi'an showed a cooling trend, the temperatures of other Jiu periods were on the rise. The average and daily minimum temperatures in Shu JIU in Xi'an showed a warming trend with the annual variation, when the average temperature mutation occurred in the 1980s, and showed a significant warming trend since 1993. The daily minimum temperature raised significantly after 2005.

Shu Jiutemperature variationmutation analysiscold periodF test

寇小兰、梁佳、徐虹

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陕西省气象服务中心,陕西 西安 710014

数九 气温变化 突变分析 寒冷时段 F检验

2015

农业网络信息
中国农业科学院农业信息研究所

农业网络信息

影响因子:0.348
ISSN:1672-6251
年,卷(期):2015.(7)
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