Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.atmosenv.2012.12.036 |
Impact of elevated aerosol layer on the cloud macrophysical properties prior to monsoon onset | |
Dipu, S.1; Prabha, Thara V.1; Pandithurai, G.1; Dudhia, J.2; Pfister, G.2; Rajesh, K.3; Goswami, B. N.1 | |
通讯作者 | Dipu, S. |
来源期刊 | ATMOSPHERIC ENVIRONMENT
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ISSN | 1352-2310 |
EISSN | 1873-2844 |
出版年 | 2013 |
卷号 | 70页码:454-467 |
英文摘要 | Atmospheric aerosols alter the radiation balance by absorption/scattering of solar radiation, and indirectly by modifying the cloud microphysical properties. Observations during the Cloud Aerosol Interaction and Precipitation Enhancement Experiment (CAIPEEX) provide a unique opportunity to investigate the aerosol-cloud interaction in a dry to wet transition phase prior to the onset of southwest monsoon. It is observed that aerosol loading increased over the central Indian region in spite of the increase in surface rainfall. This aerosol loading was observed mainly in the 2-5 km level above surface. The origin and influence of elevated aerosol layer have been investigated with the help of WRF-Chem simulations by conducting sensitivity experiments for dust emissions, modified based on the satellite observations. To enhance the dust emissions, the erodible fraction over the Thar Desert region is enhanced to an average factor of 1.7 based on TOMS aerosol index (AI) and USGS land use category, which contributed to enhanced dust emissions by a factor of 1.25 over the study region. This enhancement of dust emission from That Desert can result in an increased radiative heating due to elevated aerosol layers, which leads to an increase in the ice mixing ratio and ice water content in the regions of dry to wet transition. It is shown that even natural dust emissions (without changes in anthropogenic emissions) may also influence the spatial and temporal distribution of cloud and precipitation and the hydrological cycle. (C) 2013 Elsevier Ltd. All rights reserved. |
英文关键词 | Elevated aerosol layer Aerosol optical depth Atmospheric heating Aerosol flux Cloud macrophysics |
类型 | Article |
语种 | 英语 |
国家 | India ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000317158600045 |
WOS关键词 | RADIATIVE-TRANSFER ; SOLAR-RADIATION ; MINERAL DUST ; MODEL ; CLIMATE ; SATELLITE ; CHEMISTRY ; EMISSIONS ; AFRICA ; GOCART |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
来源机构 | Arizona State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/176006 |
作者单位 | 1.Indian Inst Trop Meteorol, Pune, Maharashtra, India; 2.Natl Ctr Atmospher Res, Boulder, CO 80307 USA; 3.Aryabhatta Res Inst Observat Sci, Naini Tal, India |
推荐引用方式 GB/T 7714 | Dipu, S.,Prabha, Thara V.,Pandithurai, G.,et al. Impact of elevated aerosol layer on the cloud macrophysical properties prior to monsoon onset[J]. Arizona State University,2013,70:454-467. |
APA | Dipu, S..,Prabha, Thara V..,Pandithurai, G..,Dudhia, J..,Pfister, G..,...&Goswami, B. N..(2013).Impact of elevated aerosol layer on the cloud macrophysical properties prior to monsoon onset.ATMOSPHERIC ENVIRONMENT,70,454-467. |
MLA | Dipu, S.,et al."Impact of elevated aerosol layer on the cloud macrophysical properties prior to monsoon onset".ATMOSPHERIC ENVIRONMENT 70(2013):454-467. |
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