摘要
根据江苏省60个气象站1961—2001年的逐月气温资料,研究了江苏气温的长期变化趋势和年代际变化特征的空间差异。结果表明:1)近40 a来江苏省年平均气温升高了约1℃,其中冬季3个月(12月—次年2月)升温最明显,夏季7、8月降温明显。各季节和年平均气温年代际变化具有一定的相似性,基本上是20世纪60年代有降低趋势,70年代到80年代前期趋势不明显,80年代后期和90年代气温快速升高,因此,年、春、秋、冬季最高温度出现在90年代。其中夏季气温在90年代后期又有所下降,夏季最高出现在60年代。2)长期变化趋势和年代际变化在空间上也有一定的差异,这种差异主要表现在温度变化幅度上,春、秋、冬和年平均气温在全省都是升高的,其中苏南和江苏北部的徐连地区春、冬季和年平均气温升高最明显,秋季苏南地区升温最明显;夏季大部分地区气温有下降趋势,其中东部沿海和西南部降温最明显,而北部部分地区则有弱的升温趋势。
The spatial patterns of Jiangsu temperature trends and inter-decadal variations （1961-2001 ） are investigated by using the monthly mean temperatures of 60 weather stations in Jiangsu Province. Resuits show that：the regional annual mean temperature rose by about 1℃ in the study period,with maximum warming （ cooling ） in December to February （ July to August ）. Inter-decadal variations of seasonal mean temperatures are somewhat similar to the annual counterparts in such a way that the these temperatures decreased on the whole in the 1960s,and fluctuated in the 1970s to early 1980s,followed by rapid increasing in the later 1980s to 1990s. As a result,the highest temperatures of annual,spring,autumn and winter occurred in the 1990s,except that the summer temperatures droped more or less in the late 1990s, with its maxima measured in the 1960s. The spatial differences in trends and inter-decadal variations lie mainly in the range of temperature change. Generally, spring, autumn,winter and annual mean temperatures rose all over the whole province, and especially winter to spring and annual means rose most distinctly in Suzhou the northern , Wuxi, and Changzhou in the southern part of the province, and Xuzhou and Lianyungang in part,with the maximum autumn warming observed in the southern part （Suzhou, Wuxi, and Changzhou）. Summer temperatures showed dropping trends in most areas of the province, particularly in the east coastal area and southwest Jiangsu, which is in sharp contrast to weakly rising trends in part of the northern Jiangsu.
出处
《南京气象学院学报》
CSCD
北大核心
2006年第2期196-202,共7页
Journal of Nanjing Institute of Meteorology
基金
江苏省教育厅自然科学研究计划资助项目(01KJB17000101KJB17006)
关键词
江苏
气温
趋势
年代际变化
空间差异
Jiangsu Province
temperature
trend
inter-decadal variation
spatial difference
作者简介
周晓兰（1967-），女，陕西商州人，工程师，研究方向：气候诊断和预测．E-mail：Dengtianxiao@hotmail.com．
