大气科学2017，Vol.41Issue(3)：475-489,15.DOI:10.3878/j.issn.1006-9895.1606.16134
基于小时降水资料研究北京地区降水的精细化特征
Fine-Scale Characteristics of Rainfall in Beijing Urban Area Based on a High-Density Autonomous Weather Stations (AWS) Dataset
摘要
Abstract
On the basis of a quality controlled hourly rainfall dataset from autonomous weather stations (AWS) for the past 8 years (2007-2014),the general and fine-scale characteristics of rainfall in Beijing were analyzed.Results show that there are two high rainfall centers in all area of Beijing.The urban heat island has an important effect on rainfall events.The rainfall events distribute unevenly both on seasonal scale and on daily scale.The study also found that the influence of urban heat island on rainfall events is different among different seasons.Events with high values of rainfall and 1-3 h and 4-6 h durations in the summer largely occur over central and northeastern Beijing,where the urban heat island has significant influences.However,there are fewer events of low rainfall with 6 h and longer duration in urban area in the summer.The features of rainfall distributions in the spring and autumn are opposite to that in the summer.Differences in diurnal variations of rainfall in different seasons are distinguished.The diurnal variation of precipitation displays a two-peak feature in the spring and autumn,while it only shows a single peak in the summer.These features are in accordance with the distributions of occurrence time of maximum rainfall amount over Beijing.关键词
降水/自动站资料/精细化特征/季节变化Key words
Rainfall events/Hourly rainfall dataset/Fine-scale characteristics/Seasonal change分类
天文与地球科学引用本文复制引用
杨萍,肖子牛,石文静..基于小时降水资料研究北京地区降水的精细化特征[J].大气科学,2017,41(3):475-489,15.基金项目
全球变化研究国家重大科学研究计划2012CB957804,国家自然科学基金项目41375069、41505061、41675092,中国气象局“青年英才培养计划”项目 （）
National Basic Research Program of China (973 Program,Grant 2012CB957804),National Natural Science Foundation of China (Grants 41375069,41505061,and 41675092),Youth Talent Program of China Meteorological Administration （973 Program,Grant 2012CB957804）
