| “75·8”持续性强降水事件及其大尺度水汽输送特征 |
| 点此下载全文 |
| 引用本文：胡娅敏,翟盘茂,陈阳.“75·8”持续性强降水事件及其大尺度水汽输送特征[J].气象与环境科学,2015,38(3):13-18..“75·8” Persistent Heavy Precipitation Event and the Characteristics of Large scale Water Vapor Transport[J].Meteorological and Environmental Sciences,2015,38(3):13-18. |
| 摘要点击次数: 385 |
| 全文下载次数: 275 |
| 作者姓名：胡娅敏 翟盘茂 陈阳 |
| 作者单位：1.广东省气候中心，广州 510080; 2.中国气象科学研究院，北京 100081 |
| DOI： |
| 基金项目: |
|
| 中文摘要:首先研究了河南“75·8”强降水事件的极端异常特征，然后从水汽通量的角度定性分析这次事件的水汽输送特征，最后采用了Hysplit模型定量分析了不同源地的水汽来源对河南“75·8”强降水的贡献率。研究表明，1975年8月5—8日在河南省发生的是一次大范围持续性极端降水过程，事件发生期间区域平均降水程度超过其气候平均值3倍标准差。强降水事件是在中高纬度环流异常和台风共同作用下发生的，贝加尔湖以东阻塞高压和副热带高压合并阻挡了7503号台风北上。定量计算结果进一步表明，河南“75·8”强降水的水汽来源与7503号台风具有十分密切的联系。 |
| 中文关键词:“75·8”持续性强降水 环流异常 Hysplit模型 水汽贡献率 |
| |
| “75·8” Persistent Heavy Precipitation Event and the Characteristics of Large scale Water Vapor Transport |
| Authors:Hu Yamin Zhai Panmao Chen Yang |
| Affiliations: |
|
| Abstract:This study firstly evaluated the extreme anomaly characteristics of the heavy precipitation event in Henan province that occurred in August 1975.Then the water vapor transport characteristics was qualitatively analyzed,followed by contribution rate quantitative analysis of water vapor source by Hysplit model.Pertinent results indicated that the event during 5—8 August 1975 was a large-scale persistent extreme precipitation process,with its intensity above 3 times standard deviations above normal.This event was contributed by joint influences of anomalous circulation in mid high latitude and a typhoon.A blocking high to the east of the Lake Baikal and the subtropical high combined to restrain No.7503 typhoon propagating further north.Quantitative analysis further validated the significant influences of No.7503 typhoon on the water vapor source of “75·8” heavy precipitation. |
| Keywords:“75·8” persistent heavy precipitation event circulation anomaly Hysplit model vapor contribution rate |
| 查看全文 查看/发表评论 下载PDF阅读器 |