Changes in surface ozone in South Korea on diurnal to decadal timescales for the period of 2001–2021

Kim, Si-Wan; Kim, Kyoung-Min; Jeong, Yujoo; Seo, Seunghwan; Park, Yeonsu; Kim, Jeongyeon

doi:https://doi.org/10.5194/acp-23-12867-2023

Articles | Volume 23, issue 19

https://doi.org/10.5194/acp-23-12867-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Atmospheric ozone and related species in the early 2020s:...

https://doi.org/10.5194/acp-23-12867-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 19

Research article

|

13 Oct 2023

Research article |

| 13 Oct 2023

Changes in surface ozone in South Korea on diurnal to decadal timescales for the period of 2001–2021

Si-Wan Kim, Kyoung-Min Kim, Yujoo Jeong, Seunghwan Seo, Yeonsu Park, and Jeongyeon Kim

Supplement

https://doi.org/10.5194/acp-23-12867-2023-supplement

Data sets

KORUS-AQ Aircraft Merge Data NASA https://doi.org/10.5067/Suborbital/KORUSAQ/DATA01

TROPOMI/S5P NO2 Tropospheric, Stratospheric and Total Columns MINDS 1-Orbit L2 Swath 5.5 km x 3.5 km L. N. Lamsal, N. A. Krotkov, S. V. Marchenko, J. Joiner, L. Oman, A. Vasilkov, B. Fisher, W. Qin, E.-S. Yang, Z. Fasnacht, S. Choi, P. Leonard, and D. Haffner https://doi.org/10.5067/MEASURES/MINDS/DATA203

Sentinel-5P TROPOMI Tropospheric NO2 1-Orbit L2 5.5 km x 3.5 km Koninklijk Nederlands Meteorologisch Instituut https://doi.org/10.5270/S5P-9bnp8q8

Model code and software

Community Earth System Model 2 National Center for Atmospheric Research https://github.com/ESCOMP/CESM/tree/release-cesm2.2.0

Weather Research and Forecasting Model National Center for Atmospheric Research https://github.com/wrf-model/WRF/releases/tag/v4.4

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Short summary

Surface ozone is a pollutant regulated for public health. This study derived surface ozone trends over South Korea from 2001 to 2021 and highlighted that South Korea has been a nonattainment area since 2010, based on the US EPA standard. However, the occurrences of high ozone condition decreased in spring during the COVID-19 pandemic, partly due to large reductions of ozone precursor concentrations in China and South Korea.