沙漠与绿洲气象2017，Vol.11Issue(6)：34-39,6.DOI:10.12057/j.issn.1002-0799.2017.06.005
甘肃省短时强降水的时空特征
The Spatial and Temporal Distribution Characteristics of Short-duration Heavy Rainfall in Gansu Province
摘要
Abstract
Short-duration heavy rainfall (SDHR)forecasting is important and difficult of severe convective weather forecasting. A severer disaster can be brought by SDHR in the arid and semi-arid area, especially in Gansu Province. Based on the hourly precipitation data from 81 stations in Gansu Province during 2002-2012, the spatial and temporal variation characteristics of SDHR were studied . The results showed : the occurring frequency of SDHR gradually increase from the northwest to the southeast, SDHR is the most intensive in the southeast parts of Gansu Province. There are two centers of high value, and one is in Heshui County, located in eastern parts of Gansu Province, another is in Huicheng basin located in Hui County. SDHR is concentrated in May to September, especially in July and August. The inter-annual variations of SDHR showed that the frequency of SDHR increased from 2002 to 2012, and with peaks in 2006 and2010. SDHR occurred most frequently in 2010 with 52 occurrences, and only occurred 17 times in 2004. SDHR mainly occurred at night, especially at the early night, concentrated in the period between 16:00 to 00:00, with high-incidence time around 17:00.关键词
短时强降水/时空分布/甘肃Key words
short-duration heavy rainfall(SDHR)/spatial and temporal distribution/Gansu分类
天文与地球科学引用本文复制引用
孟丽霞,许东蓓,狄潇泓,孔祥伟,肖玮,苟尚..甘肃省短时强降水的时空特征[J].沙漠与绿洲气象,2017,11(6):34-39,6.基金项目
公益性行业(气象)科研专项(GYHY201506006) （气象）
甘肃省气象局气象科研项目(GSMAMs2017-07) （GSMAMs2017-07）
中国气象局预报员专项(CMAYBY2017-076). （CMAYBY2017-076）
