Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.atmosenv.2007.03.060 |
Aerosol radiative forcing over the Indo-Gangetic plains during major dust storms | |
Prasad, Anup K.; Singh, Sachchidanand; Chauhan, S. S.; Srivastava, Manoi K.; Singh, Ramesh P.; Singh, Risal | |
通讯作者 | Singh, Ramesh P. |
来源期刊 | ATMOSPHERIC ENVIRONMENT
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ISSN | 1352-2310 |
EISSN | 1873-2844 |
出版年 | 2007 |
卷号 | 41期号:29页码:6289-6301 |
英文摘要 | Indo-Gangetic (IG) alluvial plains, one of the largest river basins in the world, suffers from the long range transport of mineral dust from the western and and desert regions of Africa, Arabia and Rajasthan during the summer (pre-monsoon season, April-June). These dust storms influence the aerosol optical depth (AOD) across the IG plains. The Kanpur AERONET (Aerosol Robotic Network) station and Moderate Resolution Imaging Spectro-radiometer (MODIS) data show pronounced effect on the aerosol optical properties and aerosol size distribution during major dust storm events over the IG plains that have significant effect on the aerosol radiative forcing (ARF). The multi-band AOD, from AERONET and MODIS, show contrasting changes in wavelength dependency over dust affected regions. A time collocated (+/- 30 min) validation of AERONET AOD with MODIS Terra (level 2 swath product) over Kanpur, at a common wavelength of 550, nm for the period 2001-2005 show moderate correlation (R-2 similar to 0.6) during the summer season. The average surface forcing is found to change by -23 W m(-2) during dust events and the top of the atmosphere (TOA) forcing change by -11 W m(-2) as compared to the non-dusty clear-sky days. A strong correlation is found between AOD at 500 nm and the ARF. At surface, the correlation coefficient between AOD and ARF is found to be high (R-2 = 0.925) and is found to be moderate (R = 0.628) at the TOA. The slope of the regression line gives the aerosol forcing efficiency at 500 nm of about -46 +/- 2.6 W m(-2) and -17 +/- 2.5W m(-2) at the surface and the TOA, respectively. The ARF is found to increase with the advance of the dry season in conjunction with the gradual rise in AOD (at 500 nm) from April (0.4-0.5) to June (0.6-0.7) over the IG plains. (c) 2007 Elsevier Ltd. All rights reserved. |
英文关键词 | aerosols dust storms radiative forcing summer season indo-gangetic plains |
类型 | Article |
语种 | 英语 |
国家 | USA ; India |
收录类别 | SCI-E |
WOS记录号 | WOS:000249752400016 |
WOS关键词 | OPTICAL-PROPERTIES ; MINERAL AEROSOLS ; SAHARAN DUST ; CLIMATE ; MODIS ; AERONET ; VARIABILITY ; VALIDATION ; PARAMETERS ; ATMOSPHERE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/153577 |
作者单位 | (1)Coll Sci, Ctr Earth & Observing & Space Res, Fairfax, VA USA;(2)Indian Inst Technol, Dept Civil Engn, Kanpur 208016, Uttar Pradesh, India;(3)Natl Phys Lab, Radio & Atmospher Sci Div, New Delhi 110012, India |
推荐引用方式 GB/T 7714 | Prasad, Anup K.,Singh, Sachchidanand,Chauhan, S. S.,et al. Aerosol radiative forcing over the Indo-Gangetic plains during major dust storms[J],2007,41(29):6289-6301. |
APA | Prasad, Anup K.,Singh, Sachchidanand,Chauhan, S. S.,Srivastava, Manoi K.,Singh, Ramesh P.,&Singh, Risal.(2007).Aerosol radiative forcing over the Indo-Gangetic plains during major dust storms.ATMOSPHERIC ENVIRONMENT,41(29),6289-6301. |
MLA | Prasad, Anup K.,et al."Aerosol radiative forcing over the Indo-Gangetic plains during major dust storms".ATMOSPHERIC ENVIRONMENT 41.29(2007):6289-6301. |
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