沙漠与绿洲气象2011，Vol.5Issue(3)：6-11,6.
北疆汛期降水集中程度的特征分析
Analysis of the Precipitation Concentrative Degree Characteristics during Flood Season in Northern Xinjiang
摘要
Abstract
Based on daily rainfall data of 43 stations in Xinjiang in 1961-2007,the climatic characteristics of precipitation concentration degree（PCD） and precipitation concentration period（PCP） in flood season in Tianshan Mountains,northern foot of Tianshan Mountain areas,Yili River valley areas and the north of northern Xinjiang were analyzed.The results showed that the total precipitation in flood season in the north of northern Xinjiang was the least with higher annual variation,however,that in the Tianshan mountains areas was the biggest with lower annual variation,which indicated that the precipitation in the mountainous area was stable.The mean PCD in northern Xinjiang and four sub-areas during the flood season was about 0.2,and the mean PCP in flood season was during the 32nd to 37th pentad.The annual variations of PCD and PCP in flood season in the north of northern Xinjiang were relatively more prominent than that in other areas.When the precipitation anomaly in northern Xinjiang was positive throughout the flood season,the precipitation distribution was uniformity,while when it was negative,the precipitation distribution was concentrative.关键词
汛期/降水集中度/降水集中期/北疆Key words
flood season/precipitation concentration degree/precipitation concentration period/northern Xinjiang分类
天文与地球科学引用本文复制引用
赵勇,闵屾,秦贺,杨青..北疆汛期降水集中程度的特征分析[J].沙漠与绿洲气象,2011,5(3):6-11,6.基金项目
公益性行业（气象）科研专项 （）
中央级科研院所基本科研业务费专项 （）
中国气象局气候变化专项 （）
新疆维吾尔自治区自然科学基金（200821176）联合资助 （）
