江苏省四季变化的分析
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摘要
在全球气候变暖的背景下,近些年江苏省气温明显升高,使得江苏省四季的起止时间和长度发生了明显的改变。本文通过分析多种季节划分方法,根据江苏省的气温分布特点,定义了适用于江苏省的四季划分方法。通过分析四季的变化,结果显示:(1)江苏省四季分明,且南北有明显的差别,就全省常年平均而言,冬季最长,其次是夏季,秋季和春季长度很相近,秋季略短。(2)过去几十年里,江苏省各地区各季节的长度和起止时间都发生了明显的变化,特别是自21世纪以来,这种变化速度明显加快,最主要的变化特点为:春季发生的时段向前移了近10 d;夏季明显变长,开始时间提前,结束时间推后;秋季的发生时段整体向后移;冬季明显缩短,特别是结束时间提前。
With the world climatic change the air temperature of Jiangsu province in recent years increased clearly.In this paper,by analyzing many methods of marking off the season and the air temperature distributing characteristic of Jiangsu province,the method of marking off the four seasons which adapts to Jiangsu province had been defined.The result shows:(1)The four seasons of Jiangsu province could be divided easily and the difference between North and South areas was obvious.The length of winter of whole Jiangsu province is the longest,the next is summer,and the length of autumn is near the spring's.(2)In the past several decades,the four season's length and beginning and ending dates changed clearly,especially in this century,the change rate increased sharply.The main characteristic of the change can be concluded that the spring's occurrence moved ahead approximately by ten days;the length of summer became longer;the autumn's occurrence moved backwards,and winter became more and more short.
With the world climatic change the air temperature of Jiangsu province in recent years increased clearly.In this paper,by analyzing many methods of marking off the season and the air temperature distributing characteristic of Jiangsu province,the method of marking off the four seasons which adapts to Jiangsu province had been defined.The result shows:(1)The four seasons of Jiangsu province could be divided easily and the difference between North and South areas was obvious.The length of winter of whole Jiangsu province is the longest,the next is summer,and the length of autumn is near the spring's.(2)In the past several decades,the four season's length and beginning and ending dates changed clearly,especially in this century,the change rate increased sharply.The main characteristic of the change can be concluded that the spring's occurrence moved ahead approximately by ten days;the length of summer became longer;the autumn's occurrence moved backwards,and winter became more and more short.
引文
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[7]韩超,郑景云,葛全胜.中国华北地区近40年物候春季变化.中国农业气象,2007,28(2):113-117.
[8]秦爱民,钱维宏,蔡亲波.1960-2000年中国不同季节气温分区及趋势.气象科学,2005,25(4):338-345.
[2]沙万英,邵雪梅,黄玫.20世纪80年代以来中国的气候变暖及其对自然区域界线的影响.中国科学(D辑),2002,32(4):317-326.
[3]陶玫,吕军,于波.江苏夏季旱涝环流演变特征分析.气象科学,2008,28(1):85-89.
[4]林昕,管兆勇.中国华东地区夏季高温的时空特征和年际变化.南京气象学院学报,2008,31(1):1-9.
[5]周晓兰,高庆九,邓自旺,等.江苏气温长期变化趋势及年代际变化空间差异分析.南京气象学院学报,2006,29(2):196-202.
[6]汤懋苍,钟海铃,李栋梁.青藏铁路沿线的四季划分及其温度变化分析.高原气象,2003,22(5):440-444.
[7]韩超,郑景云,葛全胜.中国华北地区近40年物候春季变化.中国农业气象,2007,28(2):113-117.
[8]秦爱民,钱维宏,蔡亲波.1960-2000年中国不同季节气温分区及趋势.气象科学,2005,25(4):338-345.
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