Production of space charge at the boundaries of layer clouds | |
Zhou, Limin; Tinsley, Brian A. | |
刊名 | Journal of geophysical research-atmospheres
![]() |
2007-06-06 | |
卷号 | 112期号:D11页码:17 |
ISSN号 | 0148-0227 |
DOI | 10.1029/2006jd007998 |
通讯作者 | Zhou, limin() |
英文摘要 | The ionosphere-earth current density j(z) creates space charge at the upper and lower boundaries of layer clouds. this occurs because clouds have an order of magnitude lower conductivity than the clear air at the same altitude, and as the current density flows through the boundaries, it creates a gradient of electric field that must be satisfied by the accumulation of space charge, according to gauss's law. we have modeled the production of space charge and its partition between charges on droplets, aerosol particles, and ions and performed sensitivity tests for the variation of a number of relevant atmospheric parameters. we find typical droplet charges of 50-100 elementary charges, positive at cloud top and negative at cloud base, consistent with recent observations. the charges are of sufficient magnitude to suggest measurable electrical effects on scavenging of ice-forming nuclei and cloud condensation nuclei. the results are relevant to the modeling of solar or internally forced changes of j(z) and space charge on cloud microphysics as a possible cause of small effects on weather and climate. |
WOS关键词 | AEROSOL ATTACHMENT COEFFICIENTS ; WEAK ELECTRIFICATION ; PARTICLES ; CONDUCTIVITY ; DROPLETS |
WOS研究方向 | Meteorology & Atmospheric Sciences |
WOS类目 | Meteorology & Atmospheric Sciences |
语种 | 英语 |
出版者 | AMER GEOPHYSICAL UNION |
WOS记录号 | WOS:000247140800005 |
内容类型 | 期刊论文 |
URI标识 | http://www.corc.org.cn/handle/1471x/2383174 |
专题 | 中国科学院大学 |
通讯作者 | Zhou, Limin |
作者单位 | 1.Univ Texas, WB Hanson Ctr Space Sci, Richardson, TX 75083 USA 2.Chinese Acad Sci, State Key Lab Environm Geochem, Inst Geochem, Guiyang, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Zhou, Limin,Tinsley, Brian A.. Production of space charge at the boundaries of layer clouds[J]. Journal of geophysical research-atmospheres,2007,112(D11):17. |
APA | Zhou, Limin,&Tinsley, Brian A..(2007).Production of space charge at the boundaries of layer clouds.Journal of geophysical research-atmospheres,112(D11),17. |
MLA | Zhou, Limin,et al."Production of space charge at the boundaries of layer clouds".Journal of geophysical research-atmospheres 112.D11(2007):17. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论