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DOI | 10.1029/2017JD028069 |
A Large Eddy Model Study on the Effect of Overshooting Convection on Lower Stratospheric Water Vapor | |
Sang, Wenjun1; Huang, Qian1; Tian, Wenshou1; Wright, Jonathon S.2; Zhang, Jiankai1; Tian, Hongying1; Luo, Jiali1; Hu, Dingzhu3; Han, Yuanyuan1 | |
2018-09-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:18页码:10023-10036 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Using a cloud-resolving large eddy model (LEM), we investigate how overshooting convection affects the water vapor content in the lower stratosphere. We design and conduct a series of sensitivity experiments to diagnose the effects of dynamical and thermodynamical background conditions on the transport of water vapor into the lower stratosphere associated with overshooting convection. The three-dimensional LEM simulations capture the bulk properties of the target case and track microphysical processes using a three-phase microphysical parameterization. The model results indicate that the net effect of overshooting convection on lower stratospheric water content is moistening, primarily due to gravity wave breaking and ice sublimation. The contributions of small-scale turbulent mixing to water vapor transport from the overshooting turret into the stratosphere are relatively weak. Sensitivity experiments show that convective intensity (as measured by updraft velocity) is directly related to the effect of overshooting convection on lower stratospheric humidity. This impact is quantified for the idealized target case. Changes in vertical wind shear near the tropopause have no significant impact on the extent of overshooting but have important impacts on cross-tropopause water vapor exchange via their modulation of gravity wave breaking. Larger vertical wind shear in the tropopause layer inhibits the transport of water vapor and ice into the lower stratosphere by overshooting convection. |
英文关键词 | overshooting convection large eddy model gravity wave breaking stratospheric water vapor |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447807300001 |
WOS关键词 | CROSS-TROPOPAUSE TRANSPORT ; BULK ICE SCHEME ; DEEP CONVECTION ; TROPICAL TROPOPAUSE ; SQUALL LINES ; CLIMATE ; SIMULATIONS ; TRENDS ; THUNDERSTORM ; SENSITIVITY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/33077 |
专题 | 气候变化 |
作者单位 | 1.Lanzhou Univ, Coll Atmospher Sci, Lanzhou, Gansu, Peoples R China; 2.Tsinghua Univ, Dept Earth Syst Sci, Key Lab Earth Syst Modeling, Minist Educ, Beijing, Peoples R China; 3.Nanjing Univ Informat Sci & Technol, Key Lab Meteorol Disasters, China Minist Educ, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Sang, Wenjun,Huang, Qian,Tian, Wenshou,et al. A Large Eddy Model Study on the Effect of Overshooting Convection on Lower Stratospheric Water Vapor[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(18):10023-10036. |
APA | Sang, Wenjun.,Huang, Qian.,Tian, Wenshou.,Wright, Jonathon S..,Zhang, Jiankai.,...&Han, Yuanyuan.(2018).A Large Eddy Model Study on the Effect of Overshooting Convection on Lower Stratospheric Water Vapor.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(18),10023-10036. |
MLA | Sang, Wenjun,et al."A Large Eddy Model Study on the Effect of Overshooting Convection on Lower Stratospheric Water Vapor".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.18(2018):10023-10036. |
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