| 我国东西部地区地气温差的年代际变化特征 |
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| 引用本文： | 温李明,周连童,黄荣辉,范广洲.我国东西部地区地气温差的年代际变化特征[J].气候与环境研究,2014,19(5):636-648. |
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| 作者姓名： | 温李明 周连童 黄荣辉 范广洲 |
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| 作者单位： | 成都信息工程学院, 成都 610225;中国科学院大气物理研究所季风系统研究中心, 北京 100190;中国科学院大气物理研究所季风系统研究中心, 北京 100190;中国科学院大气物理研究所季风系统研究中心, 北京 100190;成都信息工程学院, 成都 610225 |
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| 基金项目： | 国家自然科学基金项目41175055、41230527 |
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| 摘 要： | 利用1960~2006年我国地温、气温逐日4个时次02:00(北京时间,下同)、08:00、14:00和20:00]的台站观测资料,计算并分析了我国东南、西北地区各季地气温差的年代际变化特征。分析结果表明:我国东南部地区各季地气温差在20世纪70年代末以前,大部分年份偏高,高于平均值,而在20世纪70年代末以后,我国东南部地区各季地气温差偏低,在夏季和冬季表现尤为明显。我国西北地区春季和夏季地气温差在20世纪70年代末以前大部分年份偏低,低于平均值;而在20世纪70年代末以后,地气温差则大部分年份明显偏高。我国西北地区秋季地气温差的年代际变化特征不明显,而冬季地气温差的年代际变化趋势与春夏季相反,在20世纪70年代末以前大部分年份偏高,高于平均值,而在20世纪70年代末以后偏低。另外,发现地温和气温对我国东南、西北地区各季地气温差的年代际变化在各季所起的贡献作用不同。
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| 关 键 词： | 东西部地区 地气温差 年代际变化 |
| 收稿时间： | 2013/6/14 0:00:00 |
| 修稿时间： | 9/6/2013 12:00:00 AM |
Characteristics of Interdecadal Variability in the Difference Between Surface Temperature and Surface Air Temperature in Southeast and Northwest China |
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| WEN Liming,ZHOU Liantong,HUANG Ronghui and FAN Guangzhou.Characteristics of Interdecadal Variability in the Difference Between Surface Temperature and Surface Air Temperature in Southeast and Northwest China[J].Climatic and Environmental Research,2014,19(5):636-648. |
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| Authors: | WEN Liming ZHOU Liantong HUANG Ronghui and FAN Guangzhou |
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| Institution: | Chengdu University of Information Techology, Chegndu 610225;Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100190;Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100190;Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100190;Chengdu University of Information Techology, Chegndu 610225 |
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| Abstract: | The characteristics of the interdecadal variability in the differences between surface temperature (Ts) and surface air temperature (Ta) are analyzed, using daily-observed surface temperature and surface air temperature data from 1960 to 2006. Analysis results show that there is a clear interdecadal variability in Ts-Ta in Southeast and Northwest China. Before the late 1970s, the Ts-Ta anomalies were mostly positive in Southeast China, but they mostly became negative after this period. In contrast, in Northwest China, the Ts-Ta anomalies were mostly negative in spring and summer before the late 1970s, but became largely positive after this time. The opposite trend can be seen in the variability of Ts-Ta in Northwest China in the winter. However, in the autumn in Northwest China, the interdecadal variability of Ts-Ta was not as clear as during the other seasons. The analyzed results of Ts and Ta over the study period show that their contributions to interdecadal variability of in Ts-Ta differed between different seasons. |
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| Keywords: | Southeast China and Northwest China Ts-Ta Interdecadal variability |
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