Multipositional lidar monitoring of inhomogeneous air aerosol pollution

1997 ◽  
Author(s):  
Alexander D. Yegorov ◽  
Ilia Z. Kopp
Keyword(s):  
Aerosol Pollution

scholarly journals Air Quality during New Year’s Eve: A Biomonitoring Study with Moss

Atmosphere ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 975
Author(s):  
Paweł Świsłowski ◽  
Zbigniew Ziembik ◽  
Małgorzata Rajfur
Keyword(s):  
Heavy Metals ◽  
Air Quality ◽  
Atmospheric Aerosol ◽  
Point Sources ◽  
Accumulation Factor ◽  
Active Biomonitoring ◽  
Aerosol Pollution ◽  
New Year’S Eve ◽  
Short And Long Term

Mosses are one of the best bioindicators in the assessment of atmospheric aerosol pollution by heavy metals. Studies using mosses allow both short- and long-term air quality monitoring. The increasing contamination of the environment (including air) is causing a search for new, cheap and effective methods of monitoring its condition. Once such method is the use of mosses in active biomonitoring. The aim of the study was to assess the atmospheric aerosol pollution with selected heavy metals (Ni, Cu, Zn, Cd, Hg and Pb) from the smoke of fireworks used during New Year’s Eve in the years 2019/2020 and 2020/2021. In studies a biomonitoring moss-bag method with moss Pleurozium schreberi (Willd. ex Brid.) Mitt. genus Pleurozium was used. The research was conducted in the town Prószków (5 km in south direction from Opole, opolskie voivodship, Poland). The moss was exposed 14 days before 31 December (from 17 to 30 of December), on New Year’s Eve (31 December and 1 January) and 2 weeks after the New Year (from 2–15 January). Higher concentrations of analysed elements were determined in samples exposed during New Year’s Eve. Increases in concentrations were demonstrated by analysis of the Relative Accumulation Factor (RAF). The results indicate that the use of fireworks during New Year’s Eve causes an increase in air pollution with heavy metals. In addition, it was shown that the COVID-19 induced restrictions during New Year’s Eve 2020 resulted in a reduction of heavy metal content in moss samples and thus in lower atmospheric aerosol pollution with these analytes. The study confirmed moss usefulness in monitoring of atmospheric aerosol pollution from point sources.

Mapping aerosol pollution over the city using a scanning lidar

2021 ◽  
Author(s):  
Grigorii P. Kokhanenko ◽  
Yurii S. Balin ◽  
Anton V. Klimkin ◽  
Mikhail M. Novoselov ◽  
Shuo Zhang
Keyword(s):  
Aerosol Pollution ◽  
Scanning Lidar ◽  
The City

scholarly journals Characteristics of aerosol pollution during heavy haze events in Suzhou, China

2016 ◽  
Vol 16 (11) ◽  
pp. 7357-7371 ◽  
Author(s):  
Mi Tian ◽  
Huanbo Wang ◽  
Yang Chen ◽  
Fumo Yang ◽  
Xiaohua Zhang ◽  
...  
Keyword(s):  
Gas Phase ◽  
Inorganic Ions ◽  
Weather Conditions ◽  
Water Soluble ◽  
Chemical Components ◽  
Formation Mechanisms ◽  
Visibility Impairment ◽  
Aerosol Pollution ◽  
Haze Formation ◽  
High Concentrations

Abstract. Extremely severe haze weather events occurred in many cities in China, especially in the east part of the country, in January 2013. Comprehensive measurements including hourly concentrations of PM2.5 and its major chemical components (water-soluble inorganic ions, organic carbon (OC), and elemental carbon (EC)) and related gas-phase precursors were conducted via an online monitoring system in Suzhou, a medium-sized city in Jiangsu province, just east of Shanghai. PM2.5 (particulate matter with an aerodynamic diameter of 2.5 µm or less) frequently exceeded 150 µg m−3 on hazy days, with the maximum reaching 324 µg m−3 on 14 January 2013. Unfavorable weather conditions (high relative humidity (RH), and low rainfall, wind speed, and atmospheric pressure) were conducive to haze formation. High concentrations of secondary aerosol species (including SO42−, NO3−, NH4+, and SOC) and gaseous precursors were observed during the first two haze events, while elevated primary carbonaceous species emissions were found during the third haze period, pointing to different haze formation mechanisms. Organic matter (OM), (NH4)2SO4, and NH4NO3 were found to be the major contributors to visibility impairment. High concentrations of sulfate and nitrate might be explained by homogeneous gas-phase reactions under low RH conditions and by heterogeneous processes under relatively high RH conditions. Analysis of air mass trajectory clustering and potential source contribution function showed that aerosol pollution in the studied areas was mainly caused by local activities and surrounding sources transported from nearby cities.

Attribution of the worse aerosol pollution in March 2018 in Beijing to meteorological variability

2021 ◽  
Vol 250 ◽  
pp. 105294
Author(s):  
Junting Zhong ◽  
Xiaoye Zhang ◽  
Yaqiang Wang ◽  
Junying Sun ◽  
Xiaojing Shen ◽  
...  
Keyword(s):  
Aerosol Pollution

Effect of aerosol pollution on clouds and its dependence on precipitation intensity

2013 ◽  
Vol 42 (3-4) ◽  
pp. 557-577 ◽  
Author(s):  
Seoung Soo Lee ◽  
Byung-Gon Kim ◽  
Chulkyu Lee ◽  
Seong Soo Yum ◽  
Derek Posselt
Keyword(s):  
Precipitation Intensity ◽  
Aerosol Pollution

scholarly journals Monitoring of Aerosol Pollution of Snow Cover with Ground Based Observation Data and Satellite Information

2016 ◽  
Vol 9 (7) ◽  
pp. 950-959
Author(s):  
Anatoly A. Lezhenin ◽  
◽  
Tatyana V. Yaroslavtseva ◽  
Vladimir F. Raputa ◽  
◽  
...  
Keyword(s):  
Snow Cover ◽  
Observation Data ◽  
Satellite Information ◽  
Aerosol Pollution

scholarly journals Assessments of urban aerosol pollution in Moscow and its radiative effects

2010 ◽  
Vol 3 (6) ◽  
pp. 5469-5498 ◽  
Author(s):  
N. Ye. Chubarova ◽  
M. A. Sviridenkov ◽  
A. Smirnov ◽  
B. N. Holben
Keyword(s):  
Spectral Region ◽  
Radiative Forcing ◽  
Time Lag ◽  
Urban Pollution ◽  
Average Difference ◽  
Pollution Effects ◽  
Pronounced Difference ◽  
Meteorological Observatory ◽  
Aerosol Pollution ◽  
Aerosol Properties

Abstract. Simultaneous long-term measurements by the collocated AERONET CIMEL sun/sky photometers at the Moscow State University Meteorological Observatory (MSU MO) and at the Zvenigorod Scientific Station (ZSS) of the A. M. Obukhov Institute of Atmospheric Physics during September 2006–April 2009 provide the estimates of the effects of urban pollution on different aerosol properties in different seasons. The average difference in aerosol optical thickness between MO MSU and ZSS, which can characterize the effect of aerosol pollution, has been estimated to be about dAOT = 0.02 in visible spectral region. The most pronounced difference is observed in winter conditions when relative AOT difference can reach 30%. The high correlation of the AOT's, the Angstrom exponent values and the effective radii between the sites confirms that natural processes are the dominating factor in the changes of the aerosol properties even over the Moscow megacity area. The existence of positive correlation between dAOT and difference in water vapor content explains many cases with large dAOT between the sites by the time lag in the airmass advection. However, after excluding the difference due to this factor, AOT in Moscow remains higher even in more number of cases (more than 75%) with the same mean dAOT = 0.02. Due to the negative average difference in aerosol radiative forcing at the TOA of about dARF = −0.9 W/m2, the aerosol urban pollution provides a distinct cooling effect of the atmosphere. Due to the pollution effects, the PAR and UV irradiance reaching the ground is only 2–3% lower, though in some situations the attenuation can reach 13% in visible and more than 20% in UV spectral region.

Sign in / Sign up

Export Citation Format

Share Document