Jihee Ban
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A Hybrid Four‐Dimensional Variational Data Assimilation System for the Model for Prediction Across Scales (MPAS‐Atmosphere): Leveraging the Joint Effort for Data Assimilation Integration (JEDI) Open
A global Four‐Dimensional Ensemble Variational (4DEnVar) data assimilation system for the Atmospheric component of the Model for Prediction Across Scales (MPAS‐A) is presented that uses the Joint Effort for Data assimilation Integration (J…
A Study on Performance Characteristics Analysis of Electric Powertrain for Commercial Vehicles Based on Virtualization Environment Open
The development of electric powertrain modules for commercial vehicles is gaining attention as a key technology to achieve carbon neutrality in the transportation sector. Particularly, major vehicle manufacturers worldwide are accelerating…
Seasonal and regional variations of atmospheric ammonia across the South Korean Peninsula Open
This study aimed to identify the factors causing NH 3 emissions in the South Korean Peninsula and West Sea region. To analyze the trends of NH 3 and other air pollutants, such as NO x , CO, and NR-PM 1 , we collected samples from six super…
Seasonal and Spatial Variations of Atmospheric Ammonia in the Urban and Suburban Environments of Seoul, Korea Open
Atmospheric ammonia is a significant pollutant throughout the year, necessitating standardized measurement and identification of emission factors. We performed a quantized evaluation of ammonia concentrations at various locations in and ar…
Unexplored volatile organic compound emitted from petrochemical facilities: implications for ozone production and atmospheric chemistry Open
A compound was observed using airborne proton transfer reaction time-of-flight mass spectrometry (PTR-TOF-MS) measurements in the emission plumes from the Daesan petrochemical facility in South Korea. The compound was detected at m/z 43.01…
Evidence of ketene emissions from petrochemical industries and implications for ozone production potential Open
Ketene, a rarely measured reactive VOC, was quantified in the emission plumes from Daesan petrochemical facility in South Korea using airborne PTR-TOF-MS measurements. Ketene mixing ratios as high as ~ 40–50 ppb were observed in the emissi…
Characterizing Black Carbon Emissions from Gasoline, LPG, and Diesel Vehicles via Transient Chassis-Dynamometer Tests Open
With global anthropogenic black carbon (BC) emissions increasing, automobiles are significantly contributing as the major source of emissions. However, the appropriate regulations of BC emissions from vehicles are not in place. This study …
Aircraft Measurements of Physicochemical Evolution of Atmospheric Aerosols in Air Pollution Plumes over a Megacity and Suburban Areas Open
As part of the Megacity Air Pollution Studies (MAPS)-Seoul campaign, three types of research flights were conducted over the Seoul Metropolitan Area (SMA) from May till June 2015 to measure the spatial distribution of a pollution plume nea…
Characterization of Emission Factors Concerning Gasoline, LPG, and Diesel Vehicles via Transient Chassis-Dynamometer Tests Open
Gaseous emissions from vehicles contribute substantially to air pollution and climate change. Vehicular emissions also contain secondary pollutants produced via chemical reactions that occur between the emitted gases and atmospheric air. T…