中国农业气象 ›› 2012, Vol. 33 ›› Issue (03): 317-324.doi: 10.3969/j.issn.1000-6362.2012.03.001

• 论文 • 上一篇    下一篇

近50年长三角地区季节的气候变化特征

吴昊旻,黄安宁,黄旋旋   

  1. 1南京大学大气科学学院,南京210093;2丽水市气象局,丽水323000;3宁波市气象局,宁波315012
  • 出版日期:2012-08-20 发布日期:2012-08-27
  • 作者简介:吴昊旻(1980-),浙江丽水人,学士,高级工程师,主要从事气象电子和应用气象等相关工作。Email: wuhaomin8048@gmail.com
  • 基金资助:
    浙江省气象科技开放研究专项(kf2010006);浙江省丽水市科技计划项目(2010JYZB10)

Variation Characteristics of Seasons in the Yangtze River Delta during the Past 50 Years

WU Hao min,HUANG An ning,HUANG Xuan xuan   

  1. 1College of Atmospheric Science, Nanjing University, Nanjing210093, China;2Lishui Meteorological Bureau, Lishui323000;3Ningbo Meteorological Bureau, Ningbo315012
  • Online:2012-08-20 Published:2012-08-27

摘要: 根据长三角地区31个站点1961-2010年逐日气温资料,按照国家标准进行季节划分,在研究四季长度和起始时间变化特征的基础上,利用Mann-Kendall检验、等值线等方法对季节的时间变化趋势和空间分布特征进行研究。结果表明,时间变化上,长三角地区夏季长度有极显著的增加趋势(P<0.01),春、夏两季的起始日期有显著的提前趋势(P<0.01和P<0.05)。空间分布上,春、秋季节长度由内陆向沿海增加,夏季长度由北向南递增,冬季长度由北向南递减。四季长度变化趋势的空间结构为:春、夏季以延长为主,秋、冬季主要表现为缩短,其中夏季长度的延长最为显著(P<0.01)。四季起始时间空间分布为:春、夏季南部入季早,秋、冬季北部入季早;起始时间变化趋势的空间结构为:春、夏季为一致的提早趋势;秋、冬季以延后为主。

关键词: 气候学, 季节, Mann-Kendall检验, 等值线, 长三角地区

Abstract: Based on the daily temperature data of 31 weather observation stations from 1961 to 2010 in the Yangtze river delta, authors analyzed the variation characteristics of season length and starting date by using the trend analysis method, Mann-Kendall test method, and then analyzed the temporal and spatial distribution characteristics of seasonal climate variation by using the isoline technology. The temporal distribution results showed that the length of summer had a significant increasing trend(P<0.01), and the starting time of spring and summer had a significant advancing trend(P<0.01 and P<0.05)during past 50 years in this study area. The spatial distribution results showed that the length of spring and autumn increased from inland to coast, the length of summer became longer from north to south and the length of winter became shorter from north to south. The spatial distribution showed that spring and summer became predominantly longer as while as autumn and winter became predominantly shorter, and the summer length changed most significantly(P<0.01);the spring and summer started earlier in the south, while autumn and winter started earlier in the north; and the starting dates of autumn and winter had a delaying trend while spring and summer had an advancing trend at many stations.

Key words: Climatology, Season, Mann-Kendall test, Contour, Yangtze river delta

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