نتایج جستجو برای: dominant aerosol modes

تعداد نتایج: 266383  

2007
Robert C. Levy Lorraine A. Remer Oleg Dubovik

[1] As more information about global aerosol properties has become available from remotely sensed retrievals and in situ measurements, it is prudent to evaluate this new information, both on its own and in the context of satellite retrieval algorithms. Using the climatology of almucantur retrievals from global Aerosol Robotic Network (AERONET) Sun photometer sites, we perform cluster analysis t...

2016
Ivan Kourtchev Chiara Giorio Antti Manninen Eoin Wilson Brendan Mahon Juho Aalto Maija Kajos Dean Venables Taina Ruuskanen Janne Levula Matti Loponen Sarah Connors Neil Harris Defeng Zhao Astrid Kiendler-Scharr Thomas Mentel Yinon Rudich Mattias Hallquist Jean-Francois Doussin Willy Maenhaut Jaana Bäck Tuukka Petäjä John Wenger Markku Kulmala Markus Kalberer

Secondary organic aerosol (SOA) accounts for a dominant fraction of the submicron atmospheric particle mass, but knowledge of the formation, composition and climate effects of SOA is incomplete and limits our understanding of overall aerosol effects in the atmosphere. Organic oligomers were discovered as dominant components in SOA over a decade ago in laboratory experiments and have since been ...

2009
Kwon H. Lee Zhanqing Li Young J. Kim Alexander Kokhanovsky

More than three decades have passed since the launch of the first satellite instrument used for atmospheric aerosol detection. Since then, various powerful satellite remote sensing technologies have been developed for monitoring atmospheric aerosols. The application of these new technologies to different satellite data have led to the generation of multiple aerosol products, such as aerosol spa...

2008
G. J. Roelofs

With the global aerosol-climate model ECHAM5HAM we investigate the potential influence of organic aerosol originating from the ocean on aerosol mass and chemical composition and the droplet concentration and size of marine clouds. We present sensitivity simulations in which the uptake of organic matter in the marine aerosol is prescribed for each aerosol mode with varying organic mass and mixin...

2015
H. M. Allen

Inorganic aerosol composition was measured in the southeastern United States, a region that exhibits high aerosol mass loading during the summer, as part of the 2013 Southern Oxidant and Aerosol Study (SOAS) campaign. Measurements using a Monitor for AeRosols and GAses (MARGA) revealed two periods of high aerosol nitrate (NO3 ) concentrations during the campaign. These periods of high nitrate w...

Journal: :Industrial health 2011
Myeong-Deok Han Keun-Young Kim Seung-Cheol Hong

This study was performed to examine the potential health effects of copiers on their users and relevant workers by evaluating the charged aerosol current generation characteristics and indoor air quality (IAQ) in the copy center. In the 10 copy centers and one control site that were investigated in this study, the charged aerosol generation characteristics (effective levels, charged aerosol cur...

2016
Ke Gui Huizheng Che Quanliang Chen Linchang An Zhaoliang Zeng Zengyuan Guo Yu Zheng Yaqiang Wang Jie Yu Xiaoye Zhang

An extreme haze event occurred in the Beijing area from 17 to 23 December 2015. Ground-based measurements and satellite observations during this event were used to further our understanding of the formation process of haze pollution and aerosol optical properties. The results suggest that high relative humidity, poor diffusion conditions (low wind speed and stable stratification) and favorable ...

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