Asian Journal of Atmospheric Environment
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Seasonal variation, source identification, and health risk assessment of atmospheric polycyclic aromatic hydrocarbons (PAHs) in Ulsan, South Korea
Asian Journal of Atmospheric Environment - Tập 18 Số 1
AbstractGaseous and particulate 21 PAHs were monitored at a residential site in
Ulsan, South Korea, over three seasons (December 2013–August 2014). The mean
concentrations of Σ21 PAHs were highest in winter (16.2 ± 8.2 ng/m3), followed
by spring (8.37 ± 4.53 ng/m3) and summer (6.23 ± 2.53 ng/m3). The mean gaseous
concentration of Σ21 PAHs (7.39 ± 4.39 ng/m3) was 2.7 times higher than that of
parti...
A Review of Photocatalytic Treatment for Various Air Pollutants
Asian Journal of Atmospheric Environment - Tập 5 - Trang 181-188 - 2011
Photocatalysis is a photochemical catalytic reaction which is a highly promising
tool for the environmental cleanup process. It is very effective in treatment of
environmental pollutants by its unique redox property. It has wide applications
in the treatment of atmospheric pollutants (e.g., nitrogen dioxide,
trichloroethylene, volatile organics, hydrogen sulfide, benzene, etc) through
oxidative re...
Air Pollution Trends in Japan between 1970 and 2012 and Impact of Urban Air Pollution Countermeasures
Asian Journal of Atmospheric Environment - Tập 7 - Trang 177-190 - 2013
Air pollution trends in Japan between 1970 and 2012 were analyzed, and the
impact of air pollution countermeasures was evaluated. Concentrations of CO
decreased from 1970 to 2012, and in 2012, the Japanese environmental quality
standard (EQS) for CO was satisfied. Concentrations of SO2 dropped markedly in
the 1970s, owing to use of desulfurization technologies and low-sulfur heavy
oil. Major reduc...
Đặc điểm của các dấu chân STILT được điều khiển bởi các trường khí tượng mô phỏng bởi mô hình KIM: ý nghĩa đối với việc phát triển các dấu chân gần thời gian thực Dịch bởi AI
Asian Journal of Atmospheric Environment - Tập 17 - Trang 1-14 - 2023
Nghiên cứu này trình bày một phân tích về độ nhạy của các dấu chân khí quyển và
sự gia tăng CO2 được đo tại ba trạm hiện trường ở Hàn Quốc (Anmyeondo (AMY),
Gosan (JGS), Ulleungdo (ULD)) bằng cách sử dụng các mô hình vận chuyển khí quyển
KIM-STILT và WRF-STILT. Các dấu chân tích lũy hàng tháng cho mỗi trạm đã được so
sánh giữa các mô hình cho tháng Bảy và tháng Mười Hai năm 2020. Các dấu chân đã
t...
Air Quality Variation in Daegu, Korea During the Outbreak of COVID-19 and its Health Risk Assessment
Asian Journal of Atmospheric Environment - Tập 14 - Trang 253-262 - 2020
Coronavirus disease 2019 (COVID-19), first reported in Wuhan, China, became
pandemic in less than two months, and Korea was no exception. Daegu Metropolitan
City, in particular, has become the center of the explosive outbreak in Korea.
In this study, we evaluated how the air quality of Daegu Metropolitan City
varied when people were fighting the spread of COVID-19. In concretely, we tried
to estim...
A CFD Study of Roadside Barrier Impact on the Dispersion of Road Air Pollution
Asian Journal of Atmospheric Environment - Tập 9 - Trang 22-30 - 2015
This study evaluated road shape and roadside barrier impact on near-road air
pollution dispersion using FLUENT computational fluid dynamics (CFD) model.
Simulated road shapes are three types, namely atgrade, depressed, and filled
road. The realizable k−ε model in FLUENT CFD code was used to simulate the flow
and dispersion around road. The selected concentration profile results were
compared with ...
Personal Exposure to PM2.5 in the Massive Transport System of Bogotá and Medellín, Colombia
Asian Journal of Atmospheric Environment - Tập 14 - Trang 210-224 - 2020
Recent studies have shown that public transport users can be exposed to high
levels of pollution emitted from their own vehicles and nearby sources. The
purpose of this research is to determine the personal exposure of passengers to
PM2.5 inside the vehicles of the massive public transport of two of the main and
more populated cities of Colombia, Bogotá and Medellín. TM (TransMilenio powered
by di...
Effect of Precipitation on Air Pollutant Concentration in Seoul, Korea
Asian Journal of Atmospheric Environment - - 2014
In this study, long-term rainfall data with irregular spatial distribution in
Seoul, Korea, were separated into individual precipitation events by the
inter-event time definition of 6 hours. Precipitation washout of PM10 and NO2
concentrations in the air considering various complex factors were analyzed
quantitatively. Concentrations of PM10 and NO2 in the atmosphere were lower
under condition of ...
Experimental Studies on the Effects of Ozone on Growth and Photosynthetic Activity of Japanese Forest Tree Species
Asian Journal of Atmospheric Environment - Tập 5 - Trang 65-78 - 2011
Ozone (O3) is a main component of photochemical oxidants, and a phytotoxic
anthropogenic air pollutant. In North America and Europe, the current
concentration of O3 has been shown to have significant adverse effects on
vegetation. In this review, we summarize the experimental studies on the effects
of O3 on the growth and photosynthetic activity of Japanese forest tree species
to understand the pr...
CO2 removal characteristics of a novel type of moss and its potential for urban green roof applications
Asian Journal of Atmospheric Environment - Tập 17 - Trang 1-10 - 2023
The feasibility of a novel type of moss (Parkortanso No. 1 synthesized from
Racomitrium japonicum, Dozy and Molk) to capture CO2 in urban areas was
demonstrated. The effects of light intensity (500, 1000, and 1500 µmol/m2.s),
ambient temperature (10 °C, 25 °C, and 35 °C), age (1-year-old and 3 years old),
and leaf color (bright and dark green) on the CO2 removal caused by the moss
concerned were i...
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