Lidar observation and analysis of an aerosol pollution incident in Hefei

2021 ◽  
Author(s):  
hao Yang ◽  
Chenbo Xie ◽  
Zhiyuan Fang ◽  
Yuanjian Yang ◽  
Ye Cao
Keyword(s):  
Lidar Observation ◽  
Aerosol Pollution

scholarly journals Lidar observation of aerosol transformation in the atmospheric boundary layer above the Baltic Sea

Oceanologia ◽  
2021 ◽  
Vol 63 (2) ◽  
pp. 238-246
Author(s):  
Przemysław Makuch ◽  
Stefan Sitarek ◽  
Piotr Markuszewski ◽  
Tomasz Petelski ◽  
Tadeusz Stacewicz
Keyword(s):  
Boundary Layer ◽  
Atmospheric Boundary Layer ◽  
Baltic Sea ◽  
The Baltic Sea ◽  
Lidar Observation ◽  
The Baltic

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 Lidar Observation of the Stratospheric Aerosol Layer over Okinawa, Japan, after the Mt. Pinatubo Volcanic Eruption

1993 ◽  
Vol 71 (6) ◽  
pp. 749-755 ◽  
Author(s):  
Tomohiro Nagai ◽  
Osamu Uchino ◽  
Toshifumi Fujimoto ◽  
Yoshinobu Sai ◽  
Kazuo Tamashiro ◽  
...  
Keyword(s):  
Volcanic Eruption ◽  
Stratospheric Aerosol ◽  
Aerosol Layer ◽  
Lidar Observation

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.

scholarly journals STRUCTURE OF TURBULENCE IN THE URBAN ATMOSPHERIC BOUNDARY LAYER DETECTED IN THE DOPPLER LIDAR OBSERVATION

2011 ◽  
Vol 67 (4) ◽  
pp. I_313-I_318 ◽  
Author(s):  
Ryoko ODA ◽  
Hironori IWAI ◽  
Shoken ISHII ◽  
Shinya SEKIZAWA ◽  
Kohei MIZUTANI ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Atmospheric Boundary Layer ◽  
Doppler Lidar ◽  
Lidar Observation
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