气象2011，Vol.37Issue(8)：943-949,7.
辽宁省夏季降水的日变化特征
Diurnal Variations of Summer Precipitation in Liaoning Province
摘要
Abstract
The diurnal cycle of summer precipitation in Liaoning Province is investigated by using hourly rain-gauge data from 25 stations during 1961—2008.The results show there are strong regional characteristics of diurnal cycle and differences between coastal station and inland station.In general,the maximum precipitation amount of coastal station occurs at 04—08 BT before noon,while inland station＇s diurnal cycle has a form of double peak,one before noon and one afternoon,and the maximum value occurs at 14—20 BT afternoon.The maximum precipitation frequency of coastal station is before noon,while the diurnal cycle of inland station＇s frequency also has a form of double peak.The maximum value of precipitation with persistent 6 h or more occurs before noon,which is the reason for coastal station＇s peak before noon. On the other hand,the inland station＇s afternoon peak is attributed to the short time precipitation which is less than 6 hours and mainly caused by strong convection in the afternoon.The results also show that the diurnal cycle of precipitation can affect TS scores.关键词
降水日变化/夏季降水/降水持续性Key words
diurnal variations/summer precipitation/precipitation persistence分类
天文与地球科学引用本文复制引用
杨森,周晓珊,高杰..辽宁省夏季降水的日变化特征[J].气象,2011,37(8):943-949,7.基金项目
中央级公益性科研院所基本科研业务费专项基金 （）
国家自然科学基金（40875018）共同资助 （）
