Climate Dynamics

, Volume 54, Issue 1–2, pp 173–189 | Cite as

Added value of very high resolution climate simulations over South Korea using WRF modeling system

  • Liying Qiu
  • Eun-Soon ImEmail author
  • Jina Hur
  • Kyo-Moon Shim


This study investigates the added value of very high resolution in long-term climate simulations over South Korea using the Weather Research and Forecasting (WRF) model. A one-way double-nested modeling system consisting of a mother domain (20-km resolution) and nested domain (5-km resolution) is customized for simulating the distinct climatological patterns in Korea, where the region-specific climate is largely influenced by the area’s complex geographical features. The ERA-Interim reanalysis data are used for the initial and boundary conditions, and the simulation spans the period from December 1, 1985 to December 31, 2005 (20-year analysis period with 1-month spin-up). Simulations from both the mother and the nested domain show reasonable performance in capturing the general characteristics of summer temperature and precipitation in terms of temporally and spatially averaged quantities. However, the added value from the nested domain with its higher resolution is apparently found in the reproduction of the intensity and frequency of extreme events and in the physical realism related to the partitioning of convective and large-scale precipitation. The nested domain not only better resolves the sharp gradients of temperature variation over short distances but also substantially reduces the systematic cold bias seen in temperature extremes produced by the mother domain. Furthermore, the nested domain is better able to simulate the upper tail of precipitation distributions and thus of extreme events. The higher resolution also improves the simulation of partitioning between convective and large-scale precipitation, leading to a plausible relationship between extreme precipitation and temperature and showing good agreement with in situ observation. Given the different behaviors of convective and large-scale precipitation in response to temperature changes, their realistic partitioning in the model has important potential for enhancing the reliability of precipitation projection under global warming.


Added value Regional climate simulation High resolution Climate extremes 



Im E.-S. and Qiu L. were supported by the Korea Environmental Industry & Technology Institute (KEITI) grant funded by the Ministry of Environment (Grant RE201901084). Hur J. and Shim K.-M. were partly supported by “Research Program for Agricultural Science & Technology Development (Project no. PJ01185802)”, National Institute of Agricultural Sciences, Rural Development Administration, Republic of Korea.

Supplementary material

382_2019_4992_MOESM1_ESM.docx (2 mb)
Supplementary material 1 (DOCX 2054 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Civil and Environmental EngineeringThe Hong Kong University of Science and TechnologyKowloonChina
  2. 2.Division of Environment and SustainabilityThe Hong Kong University of Science and TechnologyKowloonChina
  3. 3.National Institute of Agricultural Sciences, Rural Development AdministrationWanju-gunSouth Korea

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