收藏本站
收藏 | 投稿 | 手机打开
二维码
手机客户端打开本文

A Comprehensive Classification of Anomalous Circulation Patterns Responsible for Persistent Precipitation Extremes in South China

吴慧  翟盘茂  陈阳  
【摘要】:Based on observational precipitation at 63 stations in South China and NCEP NCAR reanalysis data during 1951 2010,a cluster analysis is performed to classify large-scale circulation patterns responsible for persistent precipitation extremes(PPEs) that are independent of the influence of tropical cyclones(TCs).Conceptual schematics depicting configurations among planetary-scale systems at different levels are established for each type.The PPEs free from TCs account for 38.6%of total events,and they tend to occur during April August and October,with the highest frequency observed in June.Corresponding circulation patterns during June August can be mainly categorized into two types,i.e.,summer-Ⅰ type and summer-Ⅱtype.In summer-Ⅰ type,the South Asian high takes the form of a zonal-belt type.The axis of upstream westerly jets is northwest-oriented.At the middle level,the westerly jets at midlatitudes extend zonally.Along the southern edge of the westerly jet,synoptic eddies steer cold air to penetrate southward;the Bay of Bengal(BOB) trough is located to the north;a shallow trough resides over coastal areas of western South China;and an intensified western Pacific subtropical high(WPSH) extends westward.The anomalous moisture is mainly contributed by horizontal advection via southwesterlies around 20°N and southeasterlies from the southern flange of the WPSH.Moisture convergence maximizes in coastal regions of eastern South China,which is the very place recording extreme precipitation.In summer-Ⅱ type,the South Asian high behaves as a western-center type.The BOB trough is much deeper,accompanied by a cyclone to its north;and a lower-level trough appears in northwestern parts of South China.Different to summer-Ⅰ type,moisture transport via southwesterlies is mostly responsible for the anomalous moisture in this type.The moisture convergence zones cover Guangdong,Guangxi,and Hainan,matching well with the areas of flooding.It is these set combinations among different systems at different levels that trigger PPEs in South China.

知网文化
【相似文献】
中国期刊全文数据库 前20条
1 ;Regional soil moisture simulation for Shaanxi Province using SWAT model validation and trend analysis[J];Science China(Earth Sciences);2010年04期
2 ;Quasi-quantitative relationship between soil moisture and polarization characteristics[J];遥感学报;2010年06期
3 ;Evaluation of AMSR-E——Derived Soil Moisture over Northern China[J];Atmospheric and Oceanic Science Letters;2011年04期
4 Lei Huang;ZhiShan Zhang;YongLe Chen;;Probabilistic modeling of soil moisture dynamics in a revegetated desert area[J];Sciences in Cold and Arid Regions;2013年02期
5 LIU Qiang;DU JinYang;SHI JianCheng;JIANG LingMei;;Analysis of spatial distribution and multi-year trend of the remotely sensed soil moisture on the Tibetan Plateau[J];Science China(Earth Sciences);2013年12期
6 ;Research on the method for retrieving soil moisture using thermal inertia model[J];Science in China(Series D:Earth Sciences);2006年05期
7 ;EXPERIMENTAL STUDY ON SOIL MOISTURE USING DUAL-FREQUENCY MICROWAVE RADIOMETER[J];Chinese Geographical Science;2006年01期
8 GHULAN Abduwasit;;NIR-red spectral space based new method for soil moisture monitoring[J];Science in China(Series D:Earth Sciences);2007年02期
9 ;Advances in Research on Soil Moisture by Microwave Remote Sensing in China[J];Chinese Geographical Science;2007年02期
10 刘辉志;王宝民;符淙斌;;Relationships Between Surface Albedo,Soil Thermal Parameters and Soil Moisture in the Semi-arid Area of Tongyu,Northeastern China[J];Advances in Atmospheric Sciences;2008年05期
11 管晓丹;黄建平;郭铌;闭建荣;王国印;;Variability of Soil Moisture and Its Relationship with Surface Albedo and Soil Thermal Parameters over the Loess Plateau[J];Advances in Atmospheric Sciences;2009年04期
12 ;Soil moisture determination of reflected GPS signals from aircraft platform[J];遥感学报;2009年04期
13 李明星;马柱国;;Comparisons of Simulations of Soil Moisture Variations in the Yellow River Basin Driven by Various Atmospheric Forcing Data Sets[J];Advances in Atmospheric Sciences;2010年06期
14 张述文;李得勤;邱崇践;;A Multimodel Ensemble-based Kalman Filter for the Retrieval of Soil Moisture Profiles[J];Advances in Atmospheric Sciences;2011年01期
15 ;Modeling spatial and temporal variations in soil moisture in China[J];Chinese Science Bulletin;2011年17期
16 ;Effects of spatial distribution of soil parameters on soil moisture retrieval from passive microwave remote sensing[J];Science China(Earth Sciences);2012年08期
17 Xuewei Lv;Qiugang Yuan;Chenguang Bai;Xiaobo Huang;Lei Lei;;A phenomenological description of moisture capacity of iron ores[J];Particuology;2012年06期
18 LI MingXing;MA ZhuGuo;;Soil moisture-based study of the variability of dry-wet climate and climate zones in China[J];Chinese Science Bulletin;2013年Z1期
19 J. V. Tyagi;Nuzhat Qazi;S. P. Rai;M. P. Singh;;Analysis of soil moisture variation by forest cover structure in lower western Himalayas, India[J];Journal of Forestry Research;2013年02期
20 赵宗慈;;SEASONAL CHANGES OF SOIL MOISTURE INDUCED BY INCREASED CO2 AS SIMULATED BY THE ATMOSPHERIC GENERAL CIRCULATION AND MIXED LAYER OCEAN MODEL[J];Acta Meteorologica Sinica;1992年02期
中国重要会议论文全文数据库 前10条
1 ;Effects of moisture and dose of Microcoleus vaginatus on microalgal-microbial biomass and activities of soil enzyme of microbiotic crusts indoors[A];中国藻类学会第八次会员代表大会暨第十六次学术讨论会论文摘要集[C];2011年
2 YingHwa Kuo;John Braun;;Observation on anisotropy in moisture distribution with GPS during the passage of a squall line[A];2011年海峡两岸气象科学技术研讨会论文集[C];2011年
3 ;The Prediction of Soil Moisture Based on Rough Set-Neural Network Model[A];第二十九届中国控制会议论文集[C];2010年
4 ;ON IMPROVEMENT OF BARE SURFACE SOIL MOISTURE ESTIMATION WITH L-BAND DUAL-POLARIZATION RADAR[A];遥感定量反演算法研讨会摘要集[C];2010年
5 Zhon-Wei Lv;;Moisture Movement and Deformation of Expansive Soil with Season[A];Selected Works of Geotechnical Engineering----Special Volume in Commemoration of the Golden Jubilee of ISSMFE[C];1983年
6 Li Liu;Renhe Zhang;Zhiyan Zuo;;Intercomparision of Spring Soil Moisture among Multiple Reanalysis Datasets over Eastern China[A];创新驱动发展 提高气象灾害防御能力——S6短期气候预测理论、方法与技术[C];2013年
7 YANLONG KONG;ZHONGHE PANG;KLAUS FROEHLICH;;Quantifying recycled moisture fraction in precipitation of an arid region using deuterium excess[A];中国科学院地质与地球物理研究所2013年度(第13届)学术论文汇编——工程地质与水资源研究室[C];2014年
8 ;Experiments of Soil Moisture Retrieval Based on Extended Kalman Filter[A];中国地理学会百年庆典学术论文摘要集[C];2009年
9 ;An improvement on summer regional climate simulation over East China: importance of data assimilation of soil moisture[A];第七届全国优秀青年气象科技工作者学术研讨会论文集[C];2010年
10 Anthony w.s.Wong;;Moisture Management Tester: A Method to Characterize Fabric Liquid Moisture Management Properties[A];第六届全国印染后整理学术研讨会论文集[C];2005年
中国博士学位论文全文数据库 前1条
1 FODAY ROBERT KARGBO;生物质能用于谷物干燥的特性试验研究[D];华中农业大学;2011年
中国硕士学位论文全文数据库 前1条
1 卡夫(Innocent Kafodya);弯曲和水环境耦合作用下CFRP拉挤板材耐久性能研究[D];哈尔滨工业大学;2014年
中国重要报纸全文数据库 前1条
1 刘北利译;什么是露水?[N];科技日报;2002年
中国知网广告投放
 快捷付款方式  订购知网充值卡  订购热线  帮助中心
  • 400-819-9993
  • 010-62982499
  • 010-62783978