| 近30 a华北地区高空温度时空演变特征 |
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| 引用本文： | 王荣英,周顺武,吴 萍,王晓敏,吴 雁.近30 a华北地区高空温度时空演变特征[J].气象与环境科学,2010,33(4):31-37. |
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| 作者姓名： | 王荣英 周顺武 吴 萍 王晓敏 吴 雁 |
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| 作者单位： | 1.南京信息工程大学大气科学学院，南京 210044；2 河北省衡水市气象局，河北 衡水 053000 |
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| 基金项目： | 公益性行业(气象)科研专项 |
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| 摘 要： | 根据华北地区12个探空站近30 a(1979-2008年)的各标准等压面月平均气温资料,对该地区高空年、季气温时空演变特征进行了分析.结果表明:华北地区高空年、季平均气温变化均具有非常高的空间一致性,其中冬季的一致性特征最明显;华北地区高空年、季平均气温大致以150-100 hPa层为界,以上(平流层下层)和以下(对流层)的气温存在着不同的变化特征:从近地面到200 hPa冬(夏)季最低(高),但在年平均气温最低的100-70 hPa,气温季节变化位相与对流层相反,50 hPa层以上气温的年变化不大;近30 a来华北地区对流层中下层的年、季平均气温变化以上升为主,而对流层上层至平流层下层则以下降为主.低层的变暖始于20世纪80年代后期,高层的变冷普遍始于20世纪90年代.
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| 关 键 词： | 华北地区 高空 气温 时空演变特征 |
Temporal and Spatial Characteristic About Upper Temperature Over the Last 30 Years in North China |
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| Wang Rongying,Zhou Shunwu,Wu Ping,Wang Xiaomin,Wu Yan.Temporal and Spatial Characteristic About Upper Temperature Over the Last 30 Years in North China[J].Meteorological and Environmental Sciences,2010,33(4):31-37. |
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| Authors: | Wang Rongying Zhou Shunwu Wu Ping Wang Xiaomin Wu Yan |
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| Institution: | 1. School of Atmospheric Science, NUIST, Nanjing 210044, China;2. Hengshui Meteorological Office, Hengshui 053000, China |
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| Abstract: | The annual and seasonal characteristics about upper temperature in North China are analyzed on the basis of monthly mean radiosonde records of 12 meteorological stations from 1979 to 2008. The results show that: the spatial characteristic of annual mean upper temperature is high consistent with seasonal''s in North China, and in winter it is the strongest. Annual and seasonal characteristics of mean upper temperature show that: winter is the lowest and summer is the highest from near-surface to 200 hPa, while it is contrary from 100 hPa to 70 hPa. The annual change up 50 hPa is small. Annual and seasonal mean temperature at middle and lower troposphere is rising primarily, while that at upper troposphere and lower stratosphere is falling primarily. Lower troposphere became warming dated from the late 1980s, and mutations to cooling at upper troposphere and lower stratosphere began from 1990s. |
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| Keywords: | North China upper air temperature temporal and spatial characteristic |
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