Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.atmosres.2009.09.011 |
Mixing of dust aerosols into a mesoscale convective system Generation, filtering and possible feedbacks on ice anvils | |
Tulet, P.1,2; Crahan-Kaku, K.1; Leriche, M.3; Aouizerats, B.1; Crumeyrolle, S.1 | |
通讯作者 | Tulet, P. |
会议名称 | 15th International Conference on Clouds and Precipitation |
会议日期 | JUL 07-11, 2008 |
会议地点 | Cancun, MEXICO |
英文摘要 | During the second Specific Observing Period (SOP) of the African Monsoon Multidisplinary Analyses (AMMA) campaign, several intense mesoscale convective systems (MCS) developed over Niger. An examination of a particular convective storm simulated with a mesoscale model near Banizoumbou, Niger, on 1 July, 2006, shows that this MCS generates a strong emission of dust particles at the leading edge of its density current. A fraction of these dust aerosols are uplifted by the convective core of the system and redistributed by aqueous processes. Aerosol impaction scavenging is the main process by which particles are deposited within the mesoscale convective system. However, small particles (smaller than 1 mu m) that are not efficiently scavenged, are able to reach the upper troposphere at a concentration of 6 particles per cm(3). This suggests that deep convection over semi-arid regions is able to create its own ice nuclei in high concentrations. This leads to the question: can deep convection over semi-arid regions affect particular ice properties such as ice anvil extension or induce possible feedbacks of dust on precipitation through ice sedimentation? (c) 2009 Elsevier B.V. All rights reserved. |
英文关键词 | Dust Aerosol scavenging Ice nuclei Gust front Mesoscale convective systems |
来源出版物 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2010 |
卷号 | 96 |
期号 | 2-3 |
页码 | 302-314 |
出版者 | ELSEVIER SCIENCE INC |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | France |
收录类别 | SCI-E ; CPCI-S |
WOS记录号 | WOS:000281880200011 |
WOS关键词 | INTERTROPICAL DISCONTINUITY ; SIZE DISTRIBUTIONS ; CLOUD MICROPHYSICS ; AFRICAN MONSOON ; SCHEME ; MODEL ; PRECIPITATION ; CYCLE ; PARAMETERIZATION ; SENSITIVITY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/298085 |
作者单位 | 1.Meteo France, CNRM, GAME, F-31057 Toulouse, France; 2.Univ La Reunion, LACy, F-97715 St Denis, France; 3.Univ Toulouse, CNRS, Lab Aerol, F-31400 Toulouse, France |
推荐引用方式 GB/T 7714 | Tulet, P.,Crahan-Kaku, K.,Leriche, M.,et al. Mixing of dust aerosols into a mesoscale convective system Generation, filtering and possible feedbacks on ice anvils[C]:ELSEVIER SCIENCE INC,2010:302-314. |
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