Publications

43. Hogrefe, C., S. Galmarini, P. A. Makar, I. Kioutsioukis, O. E. Clifton, U. Alyuz, J. O. Bash, R. Bellasio, R. Bianconi, T. Butler, P. Cheung, A. Hodzic, R. Kranenburg, A. Lupascu, K. Momoh, J. L. Perez-Camanyo, J. E. Pleim, Y.-H. Ryu, R. San Jose, M. Schaap, D. B. Schwede, and R. Sokhi, 2025:  A Diagnostic Intercomparison of Modeled Ozone Dry Deposition Over North America and Europe Using AQMEII4 Regional-Scale Simulations. Atmospheric Chemistry and Physics, submitted, https://egusphere.copernicus.org/preprints/2025/egusphere-2025-225/. 

42. Ryu, Y.-H., S. Kim, M.-S. Park, J. Lee, J. Kim, and M. Kang, 2025: Online coupling of an urban canopy model with trees and a mesoscale atmospheric model to assess the cooling effects of trees under different urban configurations and varying soil dryness. Sustainable Cities and Society, 121, 106226, https://doi.org/10.1016/j.scs.2025.106226.

41. Makar, P. A., P. Cheung, C. Hogrefe, A. Akingunola, U. Alyuz-Ozdemir, J. O. Bash, M. D. Bell, R. Bellasio, R. Bianconi, T. Butler, H. Cathcart, O. E. Clifton, A. Hodzic, I. Koutsioukis, R. Kranenburg, A. Lupascu, J. A. Lynch, K. Momoh, J. L. Perez-Camanyo, J. Pleim, Y.-H. Ryu, R. San Jose, D. Schwede, T. Scheuschner, M. Shephard, R. Sokhi, and S. Galmarini: Critical Load Exceedances for North America and Europe using an Ensemble of Models and an Investigation of Causes for Environmental Impact Estimate Variability: An AQMEII4 Study. Atmospheric Chemistry and Physics, accepted, https://doi.org/10.5194/egusphere-2024-2226.

40. Ryu, Y.-H., S.-K. Min, 2024: Leveraging physics-based and explainable machine learning approaches to quantify the relative contributions of rain and air pollutants to wet deposition. Science of the Total Environment, 931, 172980, https://doi.org/10.1016/j.scitotenv.2024.172980.

39. Ryu, Y.-H., S.-K. Min, 2024: Anthropogenic warming degrades spring air quality in Northeast Asia by enhancing atmospheric stability and transboundary transport. npj Climate and Atmospheric Science, 7, 50, https://doi.org/10.1038/s41612-024-00603-7

38. Ha, S., R. Kumar, G. Pfister, Y. Lee, D. Lee, H. M. Kim, and Y.-H. Ryu, 2024: Chemical data assimilation with aqueous chemistry in WRF-Chem coupled with WRFDA (V4.4.1). Journal of Advances in Modeling Earth Systems, 16, e2023MS003928. https://doi.org/10.1029/2023MS003928

37. Park, B.-J., S.-K. Min, and Y.-H. Ryu, 2022: Inter-model differences in future summer onset over the northern high latitudes. Geophysical Research Letters, 49, e2022GL100739. https://doi.org/10.1029/2022GL100739

36. Ryu, Y.-H., and S.-K. Min, 2022: Greenhouse warming and anthropogenic aerosols synergistically reduce springtime rainfall in low-latitude East Asia. npj Climate and Atmospheric Science, 5, 69. https://doi.org/10.1038/s41612-022-00295-x

35. Ryu, Y.-H., S.-K. Min, and C. Knote, 2022: Contrasting roles of clouds as a sink and source of aerosols: A quantitative assessment using WRF-Chem over East Asia. Atmospheric Environment, 277, 119073. https://doi.org/10.1016/j.atmosenv.2022.119073.

34. Ryu, Y.-H. and S.-K. Min, 2022: Improving wet and dry deposition of aerosols in WRF-Chem: Updates to below-cloud scavenging and coarse-particle dry deposition. Journal of Advances in Modeling Earth Systems, 14, e2021MS002792. https://doi.org/10.1029/2021MS002792.

33. Ryu, Y.-H., S.-K. Min, and C. Knote, 2022: Role of upwind precipitation in transboundary pollution and secondary aerosol formation: A case study during the KORUS-AQ field campaign. Journal of Applied Meteorology and Climatology, 61, 159–174. https://doi.org/10.1175/JAMC-D-21-0162.1.

32. Galmarini, S., P. Makar, O. Clifton, C. Hogrefe, J. Bash, R. Bianconi, R. Bellasio, J. Bieser, T. Butler, J. Ducker, J. Flemming, A. Hozdic, C. Holmes, I. Kioutsioukis, R. Kranenburg, A. Lupascu, J. L. Perez-Camanyo, J. Pleim, Y.-H. Ryu, R. San Jose, D. Schwede, S. Silva, M. Garcia Vivanco, and R. Wolke, 2021: Technical note – AQMEII4 activity 1: Evaluation of wet and dry deposition schemes as an integral part of regional-scale air quality models. Atmospheric Chemistry and Physics, 21, 15663–15697. https://doi.org/10.5194/acp-21-15663-2021

31. Ryu, Y.-H., S.-K. Min, and A. Hodzic, 2021: Recent decreasing trends in surface PM2.5 over East Asia in the winter-spring season: Different responses to emissions and meteorology between upwind and downwind regions. Aerosol and Air Quality Research, 21, 200654. https://doi.org/10.4209/aaqr.200654

30. Wang, C., Z.-H. Wang, and Y.-H. Ryu, 2021: A single-layer urban canopy model with transmissive radiation exchange between trees and street canyons. Building and Environment, 191, 107593. https://doi.org/10.1016/j.buildenv.2021.107593

29. Ryu, Y.-H., S.-K. Min, 2021: Long-term evaluation of atmospheric composition reanalyses from CAMS, TCR-2, and MERRA-2 over South Korea: Insights into applications, implications, and limitations. Atmospheric Environment, 246, 118062. https://doi.org/10.1016/j.atmosenv.2020.118062

28. Ryu, Y.-H., S.-K. Min, 2020: What matters in public perception and awareness of air quality? Quantitative assessment using internet search volume data. Environmental Research Letters, 15, 0940b4. https://doi.org/10.1088/1748-9326/ab9fb0

27. Ryu, Y.-H., A. Hodzic, G. Descombes, M. Hu, and J. Barre, 2019: Towards a better regional ozone forecast over CONUS using rapid data assimilation of clouds and meteorology in WRF-Chem. Journal of Geophysical Research–Atmospheres, 124, 13576–13592.  https://doi.org/10.1029/2019JD031232

26. Ryu, Y.-H., A. Hodzic, J. Barre, G. Descombes, and P. Minnis, 2018: Quantifying errors in surface ozone predictions associated with clouds over CONUS: A WRF-Chem modeling study using satellite cloud retrievals. Atmospheric Chemistry and Physics, 18, 7509–7525. https://doi.org/10.5194/acp-18-7509-2018

25. Ryu, Y.-H., A. Hodzic, G. Descombes, S. Hall, P. Minnis, D. Spangenberg, K. Ullmann, and S. Madronich, 2017: Improved modeling of cloudy-sky actinic flux using satellite cloud retrievals. Geophysical Research Letters, 44, 1592–1600.  https://doi.org/10.1002/2016GL071892

24. Ryu, Y.-H., J. A. Smith, M. L. Baeck, L. Cunha, E. Bou-Zeid, and W. Krajewski, 2016: The regional water cycle and heavy spring rainfall in Iowa: Observational and modeling analyses from the IFloodS campaign. Journal of Hydrometeorology, 17, 2763–2784. https://doi.org/10.1175/JHM-D-15-0174.1

23. Ryu, Y.-H., E. Bou-Zeid, Z. Wang, and J. A. Smith, 2016: Realistic representation of trees in an urban canopy model. Boundary-Layer Meteorology, 159, 193–220. https://doi.org/10.1007/s10546-015-0120-y

22. Ryu, Y.-H., J. A. Smith, E. Bou-Zeid, and M. L. Baeck, 2016: The influence of land-surface heterogeneities on heavy convective rainfall in the Washington-Baltimore metropolitan area. Monthly Weather Review, 144, 553–573. https://doi.org/10.1175/MWR-D-15-0192.1

21. Ryu, Y.-H., J. A. Smith, and E. Bou-Zeid, 2015: On the climatology of precipitable water and water vapor flux in the mid-Atlantic region of the US. Journal of Hydrometeorology, 16, 70–87. https://doi.org/10.1175/JHM-D-14-0030.1

20. Ganbat, G., J.-J. Baik, and Y.-H. Ryu, 2015: A numerical study of the interactions of urban breeze circulation with mountain slope winds. Theoretical and Applied Climatology, 120, 123–135. https://doi.org/10.1007/s00704-014-1162-7

19. Kwak, K.-H., J.-J. Baik, Y.-H. Ryu, and S.-H. Lee, 2015: Urban air quality simulation in a high-rise building area using a CFD model coupled with mesoscale meteorological and chemistry-transport models. Atmospheric Environment, 100, 167−177. https://doi.org/10.1016/j.atmosenv.2014.10.059

18. Lee, K.-Y., K.-H. Kwak, Y.-H. Ryu, S.-H. Lee, and J.-J. Baik, 2014: Impacts of biogenic isoprene emission on ozone air quality in the Seoul metropolitan area. Atmospheric Environment, 96, 209−219. https://doi.org/10.1016/j.atmosenv.2014.07.036

17. Ryu, Y.-H., J.-J. Baik, and S.-H. Lee, 2013: Effects of anthropogenic heat on ozone air quality in a megacity. Atmospheric Environment, 80, 20−30. https://doi.org/10.1016/j.atmosenv.2013.07.053

16. Ganbat, G., J.-Y. Han, Y.-H. Ryu, and J.-J. Baik, 2013: Characteristics of the urban heat island in a high-altitude metropolitan city, Ulaanbaatar, Mongolia. Asia-Pacific Journal of Atmospheric Sciences, 49, 535−541. https://doi.org/10.1007/s13143-013-0047-5

15. Park, S.-B., J.-J. Baik, and Y.-H. Ryu, 2013: A large-eddy simulation study of bottom-heating effects on scalar dispersion in and above a cubical building array. Journal of Applied Meteorology and Climatology, 52, 1738−1752. https://doi.org/10.1175/JAMC-D-12-0255.1

14. Ryu, Y.-H., J.-J. Baik, and J.-Y. Han, 2013: Daytime urban breeze circulation and its interaction with convective cells. Quarterly Journal of the Royal Meteorological Society, 139, 401–413. https://doi.org/10.1002/qj.1973

13. Ryu, Y.-H., and J.-J. Baik, 2013: Daytime local circulations and their interactions in the Seoul metropolitan area. Journal of Applied Meteorology and Climatology, 52, 784−801. https://doi.org/10.1175/JAMC-D-12-0157.1

12. Ryu, Y.-H., J.-J. Baik, K.-H. Kwak, S. Kim, and N. Moon, 2013: Impacts of urban land-surface forcing on ozone air quality in the Seoul metropolitan area. Atmospheric Chemistry and Physics, 13, 2177−2194. https://doi.org/10.5194/acp-13-2177-2013

11. Ryu, Y.-H., J.-J. Baik, and S.-H. Lee: Performance comparison of an urban canopy model under different meteorological conditions. Atmosphere (Korean Journal), 22, 428−436, 2012. https://doi.org/10.14191/Atmos.2012.22.4.429

10. Koo, H.-J., and Y.-H. Ryu: Impacts of anthropogenic heating on urban boundary layer in the Gyeong-In region. Journal of Environmental Impact Assessment (Korean Journal), 21, 665−681, 2012. https://doi.org/10.14249/eia.2012.21.5.665

9. Baik, J.-J., K.-H. Kwak, S.-B. Park, and Y.-H. Ryu, 2012: Effects of building roof greening on air quality in street canyons. Atmospheric Environment, 61, 48−55. https://doi.org/10.1016/j.atmosenv.2012.06.076

8. Ryu, Y.-H., and J.-J. Baik, 2012: Quantitative analysis of factors contributing to urban heat island intensity. Journal of Applied Meteorology and Climatology, 51, 842−854. https://doi.org/10.1175/JAMC-D-11-098.1

7. Kwak, K.-H., J.-J. Baik, S.-H. Lee, and Y.-H. Ryu, 2011: Computational fluid dynamics modelling of the diurnal variation of flow in a street canyon. Boundary-Layer Meteorology, 141, 77−92. https://doi.org/10.1007/s10546-011-9630-4

6. Ryu, Y.-H., J.-J. Baik, and S.-H. Lee, 2011: A new single-layer urban canopy model for use in mesoscale atmospheric models. Journal of Applied Meteorology and Climatology, 50, 1773−1794. https://doi.org/10.1175/2011JAMC2665.1

5. Kwak, K.-H., Y.-H. Ryu, and J.-J. Baik, 2011: Temporal and spatial variations of NOx and ozone concentrations in Seoul during the solar eclipse of 22 July 2009. Journal of Applied Meteorology and Climatology, 50, 500−506. https://doi.org/10.1175/2010JAMC2561.1

4. Grimmond, C. S. B., M. Blackett, M. J. Best, J.-J. Baik, S. E. Belcher, J. Beringer, S. I. Bohnenstengel, I. Calmet, F. Chen, A. Coutts, A. Dandou, K. Fortuniak, M. L. Gouvea, R. Hamdi, M. Hendry, M. Kanda, T. Kawai, Y. Kawamoto, H. Kondo, E. S. Krayenhoff, S.-H. Lee, T. Loridan, A. Martilli, V. Masson, S. Miao, K. Oleson, R. Ooka, G. Pigeon, A. Porson, Y.-H. Ryu, F. Salamanca, G. J. Steeneveld, M. Tombrou, J. A. Voogt, D. T. Young, and N. Zhang, 2011: Initial results from Phase 2 of the international urban energy balance model comparison. International Journal of Climatology, 31, 244−272. https://doi.org/10.1002/joc.2227

3. Grimmond, C. S. B., M. Blackett, M. J. Best, J. Barlow, J.-J. Baik, S. E. Belcher, S. I. Bohnenstengel, I. Calmet, F. Chen, A. Dandou, K. Fortuniak, M. L. Gouvea, R. Hamdi, M. Hendry, T. Kawai, Y. Kawamoto, H. Kondo, E. S. Krayenhoff, S.-H. Lee, T. Loridan, A. Martilli, V. Masson, S. Miao, K. Oleson, G. Pigeon, A. Porson, Y.-H. Ryu, F. Salamanca, L. Shashua-Bar, G.-J. Steeneveld, M. Tombrou, J. Voogt, D. Young, and N. Zhang, 2010: The international urban energy balance models comparison project: First results from phase 1. Journal of Applied Meteorology and Climatology, 49, 1268−1292. https://doi.org/10.1175/2010JAMC2354.1

2. Tang, W, G. Haller, J.-J. Baik, and Y.-H. Ryu, 2009: Locating an atmospheric contamination source using slow manifolds. Physics of Fluids, 21, 043302. https://doi.org/10.1063/1.3115065

1. Ryu, Y.-H., and J.-J. Baik, 2009: Flow and dispersion in an urban cubical cavity. Atmospheric Environment, 43, 1721−1729. https://doi.org/10.1016/j.atmosenv.2008.12.013