Arid
DOI10.1109/IGARSS.2006.163
Potential for Dust Storm Detection Through Aerosol Radiative Forcing Related to Atmospheric Parameters
El-Askary, Hesham1; Kafatos, Menas2
通讯作者El-Askary, Hesham
会议名称IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
会议日期JUL 31-AUG 04, 2006
会议地点Denver, CO
英文摘要

The implications of climatic effects due to aerosols with a large variability like mineral dust serve as indicators of dust events and are examined. Airborne mineral dust can influence the climate by altering the radiative properties of the atmosphere. For instance, aerosols in the form of dust particles reflect the incoming solar radiation to space, thereby reducing the amount of radiation available to the ground. This is known as 'direct' radiative forcing of aerosols. Aerosols also serve as cloud condensation nuclei (CCN) and change the cloud albedo and microphysical properties of clouds, known as 'indirect' radiative forcing of aerosols. Direct and indirect radiative forcing by mineral dust are observed over a desert case study in China as well as a highly vegetated case study over Nile Delta, Egypt, using boundary layer dispersion (BLD), albedo, sensible heat flux (SHF), latent heat flux (LHF) and out going long wave radiation (OLR) parameters. During the presence of the dust event, shortwave fluxes largely decrease accompanied by an abrupt increase in the down-welling long wave fluxes resulting in surface forcing. This leads to absorption of the shortwave and long wave radiations resulting in a positive forcing in the top of the atmosphere. In this research we are focusing on the radiative impacts of the dust over some meteorological parameters.


英文关键词Dust Storm Sensible Heat Flux Latent Heat Flux Boundary Layer Dispersion Albedo Outgoing Long Wave Radiation
来源出版物2006 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-8
ISSN2153-6996
出版年2006
页码620-+
ISBN978-0-7803-9509-1
出版者IEEE
类型Proceedings Paper
语种英语
国家Egypt;USA
收录类别CPCI-S
WOS记录号WOS:000260989400159
WOS类目Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/295761
作者单位1.Univ Alexandria, Dept Environm Studies, Fac Sci, Alexandria, Egypt;
2.George Mason Univ, Ctr Earth Observ & Space Res, Sch Comp Sci, Fairfax, VA USA
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El-Askary, Hesham,Kafatos, Menas. Potential for Dust Storm Detection Through Aerosol Radiative Forcing Related to Atmospheric Parameters[C]:IEEE,2006:620-+.
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