气象2018，Vol.44Issue(4)：548-555,8.DOI:10.7519/j.issn.1000-0526.2018.04.008
2017年中国气候主要特征及主要天气气候事件
Climatic Characteristics and Major Meteorological Events over China in 2017
摘要
Abstract
Climate in China was at a normal level in 2017 and relatively fewer climate disasters occurred. Annual mean temperature 10.39℃ over China was 0.84℃ higher than normal years.In terms of high tem-perature,July and September had the highest temperature compared to that in the same periods since 1951,and the day highs at 113 stations broke the historical records.The annual mean precipitation over China was 641.3 mm,which increased 1.8% than normal years.Compared with the normal,precipitation was less in winter and more in summer,and approached normal in spring and autumn.The daily rainfall at 31 stations exceeded historical extremes,of which many stations were found in the areas where torrential rain seldom occurs.Besides,the continuous precipitation at 47 stations exceeded historical extremes.Pre-cipitation in the pre-flood season in South China and in rainy season in Southwest China decreased by 9% and 4%,respectively.Precipitation in Meiyu season increased by 6% but was significantly less than that of 2015 and 2016.The rainy season in North China was shortened by 10 days and the rainfall was 28% less than normal.However,the autumn rainfall in West China increased by 49%,getting to the highest since 1984.The rainy season in Northeast China was short with rainfall 14% less than normal.Moreover,rain-storm processes presented frequently,and extremely severely,resulting in great damages.There were more landing typhoons,which were more frequent,concentrated and regionally overlapping.High temperature occurred for more days in China,appearing early in northern China but more intense in sou-thern China.The effects of other disasters such as drought,freezing,snowstorms,dust in spring and haze were light.关键词
气候特征/气象灾害/气温/降水Key words
climatic characteristics/meteorological disaster/temperature/precipitation分类
天文与地球科学引用本文复制引用
冯爱青,蔡雯悦,侯威,黄大鹏,郭艳君,张颖娴,钟海玲,李莹,石帅,支蓉,洪洁莉,曾红玲,王东阡,尹宜舟,宋艳玲,柳艳菊,王艳姣,王凌,王有民,朱晓金..2017年中国气候主要特征及主要天气气候事件[J].气象,2018,44(4):548-555,8.基金项目
公益性行业(气象)科研专项(GYHY201506002)资助 （气象）
