A5059521139- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Atmospheric Ozone and Climate
- Atmospheric aerosols and clouds
- Atmospheric and Environmental Gas Dynamics
- Air Quality Monitoring and Forecasting
- Vehicle emissions and performance
- COVID-19 impact on air quality
- Biodiesel Production and Applications
- Spectroscopy and Laser Applications
- Energy and Environmental Systems
- Meteorological Phenomena and Simulations
- Environmental Impact and Sustainability
- Marine and coastal ecosystems
- Disaster Management and Resilience
- Industrial Gas Emission Control
- Impact of Light on Environment and Health
- Vibrio bacteria research studies
- Photovoltaic Systems and Sustainability
- Tropical and Extratropical Cyclones Research
- Catalytic Processes in Materials Science
- Remote Sensing in Agriculture
- Indoor Air Quality and Microbial Exposure
- Diverse Topics in Contemporary Research
- Wastewater Treatment and Nitrogen Removal
Hankuk University of Foreign Studies
2016-2025
National Institute of Environmental Research
2024
Japan Agency for Marine-Earth Science and Technology
2019-2023
Center for Global Development
2019
Abstract. A long-term, robust observational record of atmospheric black carbon (BC) concentrations at Fukue Island for 2009–2019 was produced by unifying the data from a continuous soot monitoring system (COSMOS) and Multi-Angle Absorption Photometer (MAAP). This then used to analyze emission trends China. We identified rapid reduction in BC (-5.8±1.5) % yr−1 or −48 2010 2018. concluded that an change (-5.3±0.7) yr−1, related changes China as much −4.6 main underlying driver. evaluation made...
Abstract. Understanding the global distribution of atmospheric black carbon (BC) is essential for unveiling its climatic effect. However, there are still large uncertainties regarding simulation BC transport due to inadequate information about removal process. We accessed wet rate in East Asia based on long-term measurements over 2010–2016 period at three representative background sites (Baengnyeong and Gosan South Korea Noto Japan). The average rate, represented by efficiency (TE), i.e.,...
Abstract. The black carbon (BC) and monoxide (CO) emission ratios were estimated compiled from long-term, harmonized observations of the ΔBC∕ΔCO under conditions unaffected by wet deposition at four sites in East Asia, including two South Korea (Baengnyeong Gosan) Japan (Noto Fukuoka). Extended spatio-temporal coverage enabled estimation full seasonality elucidation ratio North for first time. used to validate Regional Emission inventory ASia (REAS) version 2.1 based on six study domains...
Abstract. Tropospheric vertical column densities (VCDs) of nitrogen dioxide (NO2) retrieved from sun-synchronous satellite instruments have provided abundant NO2 data for environmental studies, but such are limited by retrieval uncertainties and insufficient temporal sampling (e.g., once a day). The Geostationary Environment Monitoring Spectrometer (GEMS) launched in February 2020 monitors at an unprecedented hourly resolution during the daytime. Here we present research product tropospheric...
From 2021 to 2024, balloon-borne in-situ observations were conducted study the vertical ozone distribution over Korean Peninsula. The electrochemical concentration cell (ECC) ozonesondes that produce high-resolution profiles from surface 30 km based on balloon sounding and KI redox reactions used, a total of 123 produced at Anmyeon, Osan, Yongin sites. Consecutive daily measurements made Anmyeon site, focusing transport processes through Asian summer monsoon. Twice day (AM, PM) done site...
Urban air pollution has consistently captured social and scientific attention due to its significant health climatic impacts. Among the short-lived climate pollutants (SLCPs) targeted for reduction, black carbon (BC) stands out as a critical component. BC is carbonaceous primary aerosol emitted from fossil fuel biomass combustion, with an atmospheric lifetime of approximately five days.This study involved tower-based field campaign conducted in late spring Incheon, South Korean city adjacent...
Abstract. The TROPOspheric Monitoring Instrument (TROPOMI), aboard the Sentinel-5 Precursor (S5P) satellite launched in October 2017, is dedicated to monitoring atmospheric composition associated with air quality and climate change. This paper presents global retrieval of TROPOMI tropospheric formaldehyde (HCHO) nitrogen dioxide (NO2) vertical columns using an updated version Peking University OMI NO2 (POMINO) algorithm, which focuses on improving calculation mass factors (AMFs). algorithm...
Abstract. We introduce the new Global Ozone Monitoring Experiment-2 (GOME-2) daily and monthly level-3 product of total column ozone (O3), tropospheric nitrogen dioxide (NO2), water vapour, bromine oxide (BrO), formaldehyde (HCHO), sulfur (SO2) (daily products https://doi.org/10.15770/EUM_SAF_AC_0048, AC SAF, 2023a; https://doi.org/10.15770/EUM_SAF_AC_0049, 2023b). The GOME-2 aim to provide easily translatable user-friendly data sets scientific community for progress as well satisfy public...
Abstract Columnar concentrations of absorbing and scattering components fine mode aerosols were estimated using Aerosol Robotic Network (AERONET) data for a site downwind Seoul. The study period was between March 2012 April 2013 including the Distributed Regional Gridded Observation Networks (DRAGON)‐Asia campaign in to May 2012. Maxwell Garnett mixing rule assumed insoluble embedded host solution, while volume average aqueous solution soluble components. During DRAGON‐Asia surface major...
We estimated fine-mode black carbon (BC) concentrations at the surface using AERONET data from five sites in Korea, representing urban, rural, and background. first obtained columnar BC by separating refractive index (RI) for aerosols minimizing difference between separated RIs calculated a mixing rule that can represent real aerosol mixture (Maxwell Garnett water-insoluble components volume average water-soluble components). Next, we acquired establishing multiple linear regression (MLR)...
Abstract. Nitrogen dioxide (NO2) is a major air pollutant. Tropospheric NO2 vertical column densities (VCDs) retrieved from sun-synchronous satellite instruments have provided abundant data for environmental studies, but such are limited by insufficient temporal sampling (e.g., once day). The Geostationary Environment Monitoring Spectrometer (GEMS) launched in February 2020 monitors at an unprecedented high resolution. Here we present research product tropospheric VCDs, referred to as...
We investigated the impact of human activity during COVID-19 on tropospheric nitrogen dioxide vertical column density (NO2 TropVCD) at three urban sites (Gwangju and Busan in Korea Yokosuka Japan) one remote site (Cape Hedo from Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) Pandora. Compared to monthly mean NO2 TropVCD 2015 2018 2019, values were lower 2020 due social distancing Japan. High negative relative changes observed May September (−30% −18%) sites; Cape Hedo, a...
The characteristics of the volatilization semi-volatile inorganic ions sampled on a Teflon filter were investigated using backup nylon and annular denuders. ratio (VR) was defined as fraction concentration at denuder to sum concentrations collected filter, denuder. Particles whose aerodynamic diameters are less than or equal 2.5 µm (PM2.5) for 24 h each season from summer 2011 spring 2012 site, about 35 km southeast downtown Seoul. Increase in VR with increasing temperature evident, but...
The performance of a modeling system consisting WRF model v3.4.1 and CMAQ v4.7.1 for forecasting fine particle concentrations were evaluated using measurement data at the surface. Twenty-four hour averages PM2.5 its major components Bulgwang (located in northwest Seoul) during period February 2012 through January 2013 compared with predicted as well hourly inorganic ions measured Yongin to southeast spring 2012. mean fractional bias (MFB) –0.37 fell just outside goal –0.3, level accuracy...
Abstract Dominant aerosol types were classified using level 2 inversion products for the Anmyon Aerosol Robotic Network (AERONET) site in Korea period 1999–2007. The mineral dust (MD), MD mixed with carbon, and black carbon coarse particles (BCCP) mode aerosols, (BC), organic (OC), secondary inorganic ions (SII) fine between. classification was carried out a clustering method based on parameters, including single scattering albedo (SSA), absorption Angstrom exponent (AAE), volume fraction...
As part of the Megacity Air Pollution Studies (MAPS)-Seoul campaign, three types research flights were conducted over Seoul Metropolitan Area (SMA) from May till June 2015 to measure spatial distribution a pollution plume near power plant and petrochemical complex, vertical profiles pollutants on western coast Korea, pollutant in SMA. The (~0–700 m) was highly concentrated dominated by organic aerosol (OA), which very likely oxidized plume, as it showed slightly less oxidation source...
Mass and ion concentrations of <TEX>$PM_{10}$</TEX> <TEX>$PM_{2.5}$</TEX> were measured in Yongin, downwind the Seoul metropolitan area. Twenty-four hour average samples collected daily for a month or so spring fall both 2007 2008. Asian dust occurred twice each period except 2007. During period, nitrate fine particles decreased since large amount cations coarse absorbed it. In 2008, sulfate as well ammonium also increased particles. spite occasional events, influence secondary formation was...
The U.S. Environmental Protection Agency has implemented Version 1.3 of SMOKE (Sparse Matrix Object Kernel Emission) processor for preparation area, mobile, point, and biogenic sources emission data within 4.1 the Models-3 air quality modeling framework.The system includes MOBILE 5b to model on-road emissions Biogenic Emission Inventory System, 2 (BEIS 2) emissions.Although may be operated from scripts outside framework, integration allows automatic registration tracking input output files,...