Climate Change Features of Nanchang during the Late 26 Years
Climate Change Features of Nanchang during the Late 26 Years
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发表时间：
2010
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通讯作者：
G. Jianming;Zheng Bofu;Lin Wei;Luo Jing-wei
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作者：
G. Jianming;Zheng Bofu;Lin Wei;Luo Jing-wei
利用南昌市1983 - 2008年气温、降水、日照时数、相对湿度等气候资料，采用相关分析、线性回归分析和趋势分析等方法，研究了南昌市近26年来的气候变化特征。南昌市26年来的气候变化主要表现为气温的快速上升和湿度的快速下降，平均气温以0.54 ℃/10a的速率上升，达到极显著水平26年平均气温为18.01℃，四季均呈上升趋势，以春、秋两季最明显，气候趋势率为0.89 0.66 ℃/10a南昌市年降水量增加16.12mm/10a，26年平均降水量为1610.6mm;南昌市年日照时数增加了42.26h/10a，春季日照时数明显增加（43.30 h/10a，P0.01）;南昌市年平均相对湿度显著下降，下降幅度为-9.96%/10a四季平均相对湿度趋势率分别为-10.00%/10a（P0.005）、-11.59%/10a（P0.0001）、-9.67%/10a（P0.005）和-8.57%/10a（P0.05）。
Based on the climate data about the temperature,precipitation,sunshine hours,relative humidity and so on in Nanchang City from 1983 to 2008,the climate change features of Nanchang during the late 26 years were studied by the methods of correlation analysis,linear regression analysis and trend analysis.The results indicated that,the climate change of Nanchang City during the 26 years was mainly characterized by the rapid increase of temperature and fast decrease of humidity.The average temperature of Nanchang increased at the rate of 0.54 ℃/10a,reaching the extremely significant level(P0.000 1),the average temperature of 26 years was 18.01℃,the increasing trend of the average temperature appeared in all four seasons and was the most obvious in spring and autumn with a climate trend rates of 0.89(P0.000 1) and 0.66 ℃/10a(P0.000 1) respectively;the annual precipitation in Nanchang City increased by 16.12 mm/10a,the average precipitation of 26 years was 1610.6 mm;the annual sunshine hours in Nanchang City rose by 42.26h/10a,and the sunshine hours in spring increased significantly(43.30 h/10a,P0.01);the annual average relative humidity in Nanchang City significantly decreased by-9.96%/10a(P0.000 1),and the average relative humidity trend rates in four seasons were-10.00%/10a(P0.005),-11.59%/10a(P0.000 1),-9.67%/10a(P0.005) and-8.57%/10a(P0.05) respectively.