نتایج جستجو برای: atmospheric dust

تعداد نتایج: 117069  

2009
S. M. Nelli N. O. Renno W. C. Feldman J. R. Murphy

The mission began in late Spring (L s ~77˚) and ended in midSummer (L s ~148˚), lasting for 151 sols [2]. In situ measurements by the lander characterized the local atmospheric conditions (i.e. temperature, pressure, wind speeds and direction, opacity of dust and water ice, and the detection of surface water ice frost) [3,4]. Phoenix measured a steady decline in near surface atmospheric pressur...

2015
Helena Krasnov Itzhak Katra Michael D. Friger Pasquale Avino

Dust storms have impacts on both human and physical environments, associated with an increase in atmospheric particulate matter (PM) concentrations. Most studies on exposure to PM have focused on the outdoor air, while information on indoor pollution, is still lacking. The aim of this study was to examine the impact of desert dust events on PM concentrations in indoor environments. A total of o...

Journal: :The Science of the total environment 2014
V H Garrison M S Majewski W T Foreman S A Genualdi A Mohammed S L Massey Simonich

Anthropogenic semivolatile organic compounds (SOCs) that persist in the environment, bioaccumulate, are toxic at low concentrations, and undergo long-range atmospheric transport (LRT) were identified and quantified in the atmosphere of a Saharan dust source region (Mali) and during Saharan dust incursions at downwind sites in the eastern Caribbean (U.S. Virgin Islands, Trinidad and Tobago) and ...

2014
Shinji Otani Kazunari Onishi Haosheng Mu Takenobu Hosoda Youichi Kurozawa Masahide Ikeguchi

Asian dust is a seasonal meteorological phenomenon caused by the displacement of atmospheric pollutants from the Mongolian and Chinese deserts. Although the frequency of Asian dust events and atmospheric dust levels have steadily increased in the eastern Asia region, the effects on human health remain poorly understood. In the present study, the impact of Asian dust on human health was determin...

2007
Stephen R. Lewis Peter L. Read Barney J. Conrath John C. Pearl Michael D. Smith

The Thermal Emission Spectrometer aboard the Mars Global Surveyor spacecraft has produced an extensive atmospheric data set, beginning during aerobraking and continuing throughout the extended scientific mapping phase. Temperature profiles for the atmosphere below about 40 km, surface temperatures and total dust and water ice opacities, can be retrieved from infrared spectra in nadir viewing mo...

2005
M. Viana C. Pérez X. Querol A. Alastuey S. Nickovic J. M. Baldasano

Summer atmospheric coastal dynamics exert a significant influence on the levels and composition of atmospheric particulate matter (PM) in the North-Eastern Iberian Peninsula. Summer atmospheric scenarios in this region present a high degree of complexity as they are characterised by the absence of synoptic-scale air mass advections, the development of breeze circulations, enhanced photochemistr...

2011
G. Balakrishna D. S. Bisht

The components and quantities of atmospheric dust fallout have been reported to be the pollution indicator of large urban areas. The multiplicity and complexity of sources of atmospheric dusts in urban regions has put forward the need of source apportionment of these sources indicating their contribution to specific environmental receptor. The study presented here is focused on investigation of...

2012
Mohammed M. Kamal John J. Qu Xianjun Hao

MODerate resolution Imaging Spectroradiometer (MODIS) Aerosol Optical Thickness (AOT) and the Atmospheric Infrared Sounder (AIRS) atmospheric profiles (temperature and moisture) Level 2 products are studied to investigate dust aerosols impacts on hurricanes through spatial analysis. Spatial regions were selected based on two concentric circles (an annulus) and segmented by left and right region...

Journal: :Journal of the Meteorological Society of Japan. Ser. II 1942

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