广东干湿气候的特征

FEATURES OF CLIMATE OF DRYNESS AND WETNESS IN GUANGDONG

关键词:  干湿气候指数  干季和湿季  广东省

Key words:  Climatic indices of dryness and wetness  Dry season and wet season  Guangdong Province

摘要:

提出一种月、季干湿气候指数,并用于广东各地干湿气候的分析,结果表明,广东以4-9月为湿季,10月到翌年1月为干季,2-3月为干转湿的过渡期,干季短而湿季长。干湿季节的互换呈纬向自北往南推进,3-4月呈北湿南干,9月呈北干南湿。干湿季的转换时间与自然季节的转换基本相符。

Abstract:

This paper presents a month-seasonly climatic indices of dryness and wetness, and applied to the analysis of periods of dryness and wetness in Guangdong.The results show that, the period from April to September is the wet period, the period from November to January in next year is the dry period. February and March are the transitory period between dry and wet. The wet period is longer than the dry one.The change of period of dryness and wetness is marked by the movement of latitude direction from north forward to south. In the period of March and April, the north region is wet and south's is dry. In the period of September, the pattern is just opposite. The time of transform of dryness and wetness period agrees with that of natural period.This work has an actul value for guiding agricalture products and has an important significance for the research of climatic anomaly.