摘要
利用中国气象局国家气象中心整编的中国194站1951年1月1日—2003年5月31日逐日气温资料,应用一元线性回归方法得出了东亚地区不同强度冷空气的变化趋势;文中将冷空气入侵我国的3条主要路径进行了定义,明确了每年不同路径发生的次数,并得出不同路径的气候特征。结果发现:全国大部中强冷空气和寒潮年发生次数呈减少趋势,但少部分地区出现中强冷空气年发生次数增多趋势。就路径而言,西路冷空气年发生次数同比中、东两路减少趋势明显;就季节而言,冬季冷空气发生次数同比秋、春两季减少明显。
Based on the daily temperature data of 194 basic meteorology stations from September to the next May from 1951 to 2003,the trend of East Asia cold airs was analyzed using simple linear regression method.The main three paths of East Asia cold airs were defined.Meanwhile,the numbers and climate characteristic of different paths were studied.The main results showed as follows：（1） The frequency of medium-strong cold airs and cold wave decreased in most of China.（2） The frequency of west cold airs reduced more obviously than that of North or East cold airs.（3） The frequency of winter cold airs decreased more evidently than that of autumn and spring.
出处
《海洋预报》
北大核心
2014年第5期69-75,共7页
Marine Forecasts
基金
国家海洋环境预报中心业务发展基金(2013004)
关键词
东亚
冷空气
路径
气候特征
变化趋势
East Asia
cold airs
path
climate characteristic
trend
