收藏本站
收藏 | 手机打开
二维码
手机客户端打开本文

Role of surface evaporation in surface rainfall processes

【摘要】:正The roles of surface evaporation in tropical surface rainfall processes in rainfall regions(raining stratiform and convective regions) and rainfall-free regions(nonraining stratiform and clear-sky regions) are investigated on the basis of the data from a series of two-dimensional cloud-resolving simulations.The model is integrated for 21 days with imposed zonally uniform vertical velocity,zonal wind,horizontal temperature,and vapor advection,as well as sea surface temperature from the Tropical Ocean-Global Atmosphere Coupled Ocean-Atmosphere Response Experiment(TOGA COARE).The model is also integrated to equilibrium states for 40 days with imposed zero vertical velocity,constant zonal wind,and sea surface temperatures of 31℃and 29℃for two separate experiments.The time- and zonal-mean surface evaporation mainly comes from rainfall-free regions,where the surface evaporation is largely balanced by the vapor divergence associated with the subsidence.In rainfall regions the vapor convergence determines the convective rainfall while the surface evaporation plays a negligible role. Thus surface evaporation pumps water vapor into rainfall-free regions,and the divergence transports the vapor from rainfall-free regions to rainfall regions,which supports the rainfall.Imposed forcing and sea surface temperature do not change the role of surface evaporation in rainfall processes.

知网文化
【相似文献】
中国期刊全文数据库 前20条
1 夏友龙,姜达雍,杨大升;THE INFLUENCE OF INTERACTION BETWEEN SHIFT OF WARM POOL AND THAT OF THE EQUATORIAL CONVERGENCE ZONE ON ATMOSPHERIC SURFACE WIND FIELDS DURING 1982/83 ENSO[J];热带气象学报(英文版);1996年01期
2 邹娥梅,李若钝,李坤平,曾宪模;THE INTRASEASONAL VARIABILITY OF SURFACE WIND AND UPPER LAYER THERMAL STRUCTURE IN THE WESTERN TROPICAL PACIFIC WARM POOL REGION DURING THE WINTER OF 1992~1993[J];热带气象学报(英文版);1996年02期
3 阎敬华,薛纪善;NUMERICAL ANALYSIS OF THE DIFFERENCES IN DIFFUSION BETWEEN p-SURFACE AND σ-SURFACE[J];热带气象学报(英文版);1995年01期
4 ;[J];;年期
5 ;[J];;年期
6 ;[J];;年期
7 ;[J];;年期
8 ;[J];;年期
9 ;[J];;年期
10 ;[J];;年期
11 ;[J];;年期
12 ;[J];;年期
13 ;[J];;年期
14 ;[J];;年期
15 ;[J];;年期
16 ;[J];;年期
17 ;[J];;年期
18 ;[J];;年期
19 ;[J];;年期
20 ;[J];;年期
中国重要会议论文全文数据库 前10条
1 ;Role of surface evaporation in surface rainfall processes[A];“2010年北京气象学会中青年优秀论文评选”学术研讨会论文集[C];2011年
2 ;Role of surface evaporation in surface rainfall processes[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
3 ;A cloud-resolving modeling study of diurnal variations of tropical convective and stratiform rainfall[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
4 K.Wyser;H.Ritchie;;Impacts of boundary layer turbulence and land surface process parameterizations on simulated sea breeze characteristics[A];第28届中国气象学会年会——S7城市气象精细预报与服务[C];2011年
5 ;Probability density functions of turbulent velocity and temperature fluctuations in the unstable atmospheric surface layer[A];2012北京气象学会中青年优秀论文评选论文集[C];2012年
6 孟春雷;;采用u-HRLDAS改进北京陆面参数模拟(英文)[A];第28届中国气象学会年会——S7城市气象精细预报与服务[C];2011年
7 ;Impact of Nocturnal Planetary Boundary Layer on Air Pollutants: Measurements from a 250 meter tower over Tianjin, China[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
8 马敏劲;;Studies on the Characteristics of Atmospheric Boundary Layer over Sand Dust Storm Source[A];第28届中国气象学会年会——S14气候环境变化与人体健康[C];2011年
9 ;Variation characteristics of Ultraviolet radiation derived from measurement and reconstruction in Beijing, China[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 ;Using of Stable Isotopes to Assess Relationship between Surface/Groundwater in Sanjiang Plain[A];寒区冰情与冻土水文效应——第4届“寒区水资源及其可持续利用”学术研讨会论文集[C];2011年
中国博士学位论文全文数据库 前1条
1 范伶俐;广东区域气象水文环境下蒸发皿蒸发量变化研究[D];南京信息工程大学;2011年
中国硕士学位论文全文数据库 前1条
1 郭媛;近50年来(1960-2010)长江流域实际蒸发量变化的时空格局及其影响要素分析[D];南京信息工程大学;2012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