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Carbonaceous and Ionic Components of Atmospheric Fine Particles in Beijing and Their Impact on Atmospheric Visibility
PM2.5 OC EC Ion Visibility
2016/3/25
Ground-based observation of fine particulate matter (PM2.5) in Beijing was carried out continuously in 2006. The
carbonaceous and ionic components, as well as their distribution characteristics and s...
Occurrence of gas phase ammonia in the area of Beijing (China)
gas phase ammonia the area of Beijing (China)
2010/10/11
The atmospheric concentrations of gaseous ammonia have been measured during two field campaigns in the winter and in the summer of 2007 at Beijing (China). These measurements were carried out by means...
CO2 and its correlation with CO at a rural site near Beijing: implications for combustion efficiency in China
CO2 CO a rural site near Beijing combustion efficiency China
2010/10/11
Although China has surpassed the United States as the world's largest carbon dioxide emitter, in situ measurements of atmospheric CO2 have been sparse in China. This paper analyzes hourly CO2 and its ...
Haze types in Beijing and the influence of agricultural biomass burning
Haze types Beijing agricultural biomass burning
2010/9/14
Emissions from agricultural biomass burning (ABB) in northern China have a significant impact on the regional and global climate. The monthly average aerosol optical depth (AOD) at 550 nm in northern ...
The "Blue Sky Project" was proposed in 1998 to investigate by how much emissions should be reduced to increase blue sky frequency in Beijing, which hosted the Summer Olympics in 2008. This paper focus...
IASI observations of seasonal and day-to-day variations of tropospheric ozone over three highly populated areas of China: Beijing, Shanghai, and Hong Kong
IASI observations seasonal and day-to-day variations tropospheric ozone three highly populated areas of China
2010/8/12
IASI observations of tropospheric ozone over the Beijing, Shanghai and Hong Kong areas during one year (2008) have been analysed, demonstrating the capability of space-borne infrared nadir measurement...
Surface ozone trend details and interpretations in Beijing, 2001–2006
Surface ozone trend details interpretations Beijing
2009/12/3
Beijing is a megacity situated in the rapidly developing Beijing-Tianjin-Hebei region of northern China. In this study, we analyze data on ozone and nitrogen oxide levels obtained at six urban sites i...
Source apportionment of fine organic aerosols in Beijing
Source apportionment fine organic aerosols Beijing
2009/11/19
Fine particles (PM2.5, i.e., particles with an aerodynamic diameter of ≤2.5 μm) were collected from the air in August 2005, August–September 2006, and January–February 2007, in Beijing, China. The che...
Use of a mobile laboratory to evaluate changes in on-road air pollutants during the Beijing 2008 Summer Olympics
on-road air pollutants Beijing 2008 Summer Olympics
2009/11/19
China implemented systematic air pollution control measures during the 2008 Beijing Summer Olympics and Paralympics to improve air quality. This study used a versatile mobile laboratory to conduct in ...
Dust events in Beijing, China (2004–2006): comparison of ground-based measurements with columnar integrated observations
Dust events Beijing China columnar integrated observations
2009/9/23
Ambient particle number size distributions spanning three years were used to characterize the frequency and intensity of atmospheric dust events in the urban areas of Beijing, China in combination wit...
Hygroscopic growth of urban aerosol particles in Beijing (China) during wintertime: a comparison of three experimental methods
Hygroscopic growth urban aerosol particles experimental method
2009/9/23
The hygroscopic properties of atmospheric aerosols are highly relevant for the quantification of radiative effects in the atmosphere, but also of interest for the assessment of particle health effects...
Decoupling of Aerosol Absorption Coefficient in the Spring of 2006 at an Urban Site in Beijing
dust particle black carbon absorption coefficient wavelength exponent
2009/8/28
A statistic regression approach was used to estimate the wavelength exponents of black carbon (BC) and dust particles, and further to separate the contributions of the two types of aerosols to the tot...
A modeling analysis of a heavy air pollution episode occurred in Beijing
modeling analysis heavy air pollution Beijing
2008/12/12
The concentrations of fine particulate matter (PM) and ozone in Beijing often exceed healthful levels in recent years, therefore China is to taking steps to improve Beijing's air quality for the 2008 ...
Variations of O3 and CO in summertime at a rural site near Beijing
O3 CO summertime rural site Beijing
2008/11/25
Large intra-season differences in mixing ratios of CO and O3 were detected at Miyun, a rural site north of Beijing, in summer 2006. Despite an increase in mean daytime mixing ratio of CO from 500 ppbv...
Spatiotemporal variations of ambient PM10 source contributions in Beijing in 2004 using positive matrix factorization
spatiotemporal variations positive matrix factorization
2008/11/7
Source contributions to ambient PM10 (particles with an aerodynamic diameter of 10 μm or less) in Beijing, China were determined with positive matrix factorization (PMF) based on ambient PM10 composit...