Arid
DOI10.4209/aaqr.2015.05.0325
Dust Induced Changes in Ice Cloud and Cloud Radiative Forcing over a High Altitude Site
Patel, Piyushkumar N.; Kumar, Raj
通讯作者Patel, Piyushkumar N.
来源期刊AEROSOL AND AIR QUALITY RESEARCH
ISSN1680-8584
EISSN2071-1409
出版年2016
卷号16期号:8页码:1820-1831
英文摘要

Aerosol-cloud interaction is the subject of considerable scientific research, due to the importance of clouds in controlling climate. In the present study, three years (2011-2013) satellite observations are used to investigate the aerosol indirect effect (AIE) over Dehradun. The low values of Angstrom exponent (a) during March-July are attributed to the loading of dust-like coarse particles in the atmosphere, whereas the analysis of aerosol type and Spectral Radiation Transport Model for Aerosol species (SPRINTARS) simulated aerosol species variation supports the fact. Moderate Resolution Imaging Spectroradiometer (MODIS) derived AOD data are associated to the cloud product to examine the dust impact on properties of liquid cloud and ice cloud. The positive values of aerosol cloud interaction effect (ACI) for ice cloud during pre-monsoon (March-May) and monsoon (June-August) seasons reveal the significant impact of dust on ice clouds over Dehradun, which is maximum during May (similar to 0.24 +/- 0.05). The present study shows that ice cloud effective radius (ICER) decrease with AOD during dust period. The increase in ice water path (IWP) and ice cloud optical depth (ICOD) reveals the impact of dust on heterogeneous ice generation in low level clouds. However, there is no relation between dust and liquid water cloud during dust period. It is difficult to provide definite conclusions that the dust and cloud changes are driven by the same meteorological conditions. Cloud and the Earth’s Radiant Energy System (CERES) derived flux data are used to examine the associated changes in TOA cloud radiative forcing. The diminution in effective size of ice crystal due to aerosol first indirect effect traps more longwave radiation and reflects more solar radiation. Both first and second indirect effects enhance cloud cooling, whereas the dust induced cloud warming is mainly the result of the semi-direct effect.


英文关键词Dust Ice cloud Cloud radiative forcing Aerosol indirect effect
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000381982900003
WOS关键词ASIAN DUST ; ARABIAN SEA ; DESERT DUST ; AEROSOL ; CLIMATE ; MODEL ; MODIS ; SIMULATION ; SATELLITE ; PRODUCTS
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/191026
作者单位Indian Space Res Org, Ctr Space Applicat, Ahmadabad 380015, Gujarat, India
推荐引用方式
GB/T 7714
Patel, Piyushkumar N.,Kumar, Raj. Dust Induced Changes in Ice Cloud and Cloud Radiative Forcing over a High Altitude Site[J],2016,16(8):1820-1831.
APA Patel, Piyushkumar N.,&Kumar, Raj.(2016).Dust Induced Changes in Ice Cloud and Cloud Radiative Forcing over a High Altitude Site.AEROSOL AND AIR QUALITY RESEARCH,16(8),1820-1831.
MLA Patel, Piyushkumar N.,et al."Dust Induced Changes in Ice Cloud and Cloud Radiative Forcing over a High Altitude Site".AEROSOL AND AIR QUALITY RESEARCH 16.8(2016):1820-1831.
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