A5100334906- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Air Quality and Health Impacts
- Atmospheric Ozone and Climate
- Air Quality Monitoring and Forecasting
- Atmospheric and Environmental Gas Dynamics
- Vehicle emissions and performance
- Meteorological Phenomena and Simulations
- Wind and Air Flow Studies
- Energy and Environmental Systems
- Environmental Policies and Emissions
- Radioactive contamination and transfer
- Aeolian processes and effects
- Toxic Organic Pollutants Impact
- Arctic and Antarctic ice dynamics
- Remote Sensing and Land Use
- Flood Risk Assessment and Management
- Tropical and Extratropical Cyclones Research
- Fire effects on ecosystems
- Radioactivity and Radon Measurements
- Anesthesia and Pain Management
- Climate Change, Adaptation, Migration
- Oil Spill Detection and Mitigation
- Soil and Land Suitability Analysis
- Marine and Coastal Research
Pusan National University
2015-2025
Kim Il-sung University
2023
ORCID
2020
CHA Bundang Medical Center
2016
University of Zadar
2016
University of Portsmouth
2016
Seoul St. Mary's Hospital
2016
Ahmadu Bello University Teaching Hospital
2012
Louisiana State University Health Sciences Center Shreveport
2012
Hospital Nacional Cayetano Heredia
2012
The Korea-United States Air Quality (KORUS-AQ) field study was conducted during May–June 2016 to understand the factors controlling air quality in South Korea. Extensive aircraft and ground network observations from campaign offer an opportunity address issues current models reduce model-observation disagreements. This examines these using model evaluation against KORUS-AQ intercomparisons between models. Six regional two global chemistry transport identical anthropogenic emissions...
Abstract. Topic 3 of the Model Inter-Comparison Study for Asia (MICS-Asia) Phase III examines how online coupled air quality models perform in simulating high aerosol pollution North China Plain region during wintertime haze events and evaluates importance radiative microphysical feedbacks. A comprehensive overview MICS-Asia study design, including descriptions participating model inputs, experimental designs, results evaluation, are presented. Six modeling groups from China, Korea United...
Abstract. Spatiotemporal variations of ozone (O3) and nitrogen oxide (NOx) mixing ratios from 14 state-of-the-art chemical transport models (CTMs) are intercompared evaluated with O3 observations in East Asia, within the framework Model Inter-Comparison Study for Asia Phase III (MICS-Asia III). This study was designed to evaluate capabilities uncertainties current CTMs simulations provide multi-model estimates pollutant distributions. These were run by independent groups working China,...
Abstract. Despite the significant progress in improving chemical transport models (CTMs), applications of these modeling endeavors are still subject to large and complex model uncertainty. The Model Inter-Comparison Study for Asia III (MICS-Asia III) has provided opportunity assess capability uncertainty current CTMs East Asian applications. In this study, we have evaluated multi-model simulations nitrogen dioxide (NO2), carbon monoxide (CO) ammonia (NH3) over China under framework MICS-Asia...
Models of aerosol scavenging and aqueous‐phase oxidation SO 2 by H O 3 in a cloud updraft are compared. Bulk models considering only single droplet size compared with size‐resolved that explicitly simulate multiple drop sizes. All growth drops on lognormal ammonium bisulfate distribution, subsequent chemistry during adiabatic ascent. In agreement earlier published studies, it is found relative to bulk models, the chemical consistently calculate 2–3 times more via + pathway, due calculated...
To forecast haze pollution episodes caused by high concentrations of long-range transported pollutants emitted in the areas upstream South Korea, it is crucial to study and identify their behaviour. We analysed three-dimensional air quality structure Seoul using ground observation data aerosol lidar measurements vertical intrusion into Korean Peninsula during spring 2016. The intrusions were particularly affected development atmospheric boundary layer (ABL) leeward regions. nocturnal...
Space-borne ozone (O3) measurements have indicated consistent positive trends across the entire Asia–Pacific region despite considerable reduction of NOx since 2000s. The rate increase in O3 derived from lower free tropospheric column was observed to be 0.21 ± 0.05 DU/decade during 2005–2018. Our space-borne-based diagnosis nonlinear photochemical formation regimes, NOx-limited and NOx-saturated, show that chemistry is undergoing a transitional process regime throughout most Asian region....
Abstract Nitrogen dioxide (NO 2 ) columns observed from space have been useful in detecting the increase of nitrogen oxides x emissions East Asia, particularly China, coinciding with rapid economic growth during past several decades. NO retrieved above a particular location reflect combination local and transported upwind sources. In this study, we demonstrate transport emitted Asia using satellite surface situ measurements Lagrangian particle dispersion model simulations. Enhanced Yellow...
Substantial mitigation of air pollutants emissions has been performed since 2013 around Beijing, and changes in the atmospheric characteristics have expected over downstream area Beijing. In this study, both WRF-Chem simulation on-site measurements were utilized for Baengnyeong (island) supersite, one representative regional background sites located Yellow Sea, entrance long-range transport process Korea. The chemical compositions inorganic aerosols examined spring-time during Chinese...
Abstract. Topic 3 of the Model Inter-Comparison Study for Asia (MICS-Asia) Phase III examines how online coupled air quality models perform in simulating wintertime haze events North China Plain region and evaluates importance aerosol radiative feedbacks. This paper discusses estimates forcing, feedbacks, possible causes differences among participating models. Over Beijing–Tianjin–Hebei (BTH) region, ensemble mean estimated direct forcing (ADRF) at top atmosphere, inside surface are −1.1,...
High levels of atmospheric concentration PM2.5 (particulate matters less than 2.5 μm in size) are one the most urgent societal issues over East Asian countries. Air quality models have been used as an essential tool to predict spatial and temporal distribution support relevant policy making. This study aims investigate performance high-fidelity air simulating surface chemical composition Asia region terms a prediction consistency, which is prerequisite for accurate forecasts reliable...
Abstract Northeast Asia has been suffering from dramatic increases of particulate matter (PM) since the late 1990s, and it still continues to undergo haze despite various abating regulations. In this study, we investigated aerosol-cloud-precipitation (ACP) interactions with varied PM, impact long-range transport (LRT) process on ACP in springtime was assessed Asia. Our long-term (1995–2019) analysis PM 10 exhibited correlation decreases both sunshine duration drizzle occurrences that can be...
Vertical mixing in the planetary boundary layer (PBL) is an important factor prediction of particulate matter (PM) concentrations; however, PBL height (PBLH) stable atmosphere remains poorly understood. In particular, assessment uncertainties related to nocturnal PBLH (nPBLH) challenging due absence observations. this study, we explored nPBLH–PM2.5 interactions by comparing model results and observations during Korea–United States Air Quality Study (KORUS-AQ) campaign (1–31 May 2016). Remote...
Abstract. We describe the new and improved version 2 of ozone profile research product from Ozone Monitoring Instrument (OMI) on Aura satellite. One major changes is to switch OMI L1b data collection 3 recent 4 as well accompanying auxiliary datasets. The algorithm details are updated radiative transfer model calculation measurement calibrations, along with input in meteorological data, use a tropopause-based climatology, an high-resolution solar reference spectrum, absorption cross-section...
A numerical sensitivity study on secondary organic aerosol formation has been carried out by employing the WRF-Chem (Weather Research and Forecasting model coupled with Chemistry). Two modules, Modal Aerosol Dynamics for Europe/Volatility Basis Set (MADE/VBS) Europe/Secondary Organic Model (MADE/SORGAM) were employed in model, surface PM2.5 (particulate matter less than 2.5 μm size) mass concentration composition of its relevant chemical sources, i.e., SO42−, NO3−, NH4+, carbon (OC)...
Urban photochemical ozone (O3) formation regimes (NOx- and VOC-limited regimes) at nine megacities in East Asia were diagnosed based on near-surface O3 columns from 900 to 700 hPa, nitrogen dioxide (NO2), formaldehyde (HCHO), which inferred measurements by ozone-monitoring instruments (OMI) for 2014–2018. The included Beijing, Tianjin, Hebei, Shandong, Shanghai, Seoul, Busan, Tokyo, Osaka. space-borne HCHO–to–NO2 ratio (FNR) the OMI was applied verified a series of sensitivity tests Weather...