EGU2020-3238, updated on 12 Jun 2020
https://doi.org/10.5194/egusphere-egu2020-3238
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

A Study on the Operation of Early Warning System for Heat Waves in Gwangju Based on the Urban Climatic Environment Assessment Model System

Byoungchull Oh1, Cheolho Hwang2, Won-tae Yun3, and Jongha Kim4
Byoungchull Oh et al.
  • 1International Climate & Environment Center, Research and Development Office, Gwangju, Korea, Republic of (obc9999@gmail.com)
  • 2International Climate & Environment Center, Research and Development Office, Gwangju, Korea, Republic of (domo1@hanmail.net)
  • 3International Climate & Environment Center, Gwangju, Korea, Republic of (wtyun@icecgj.or.kr)
  • 4YEOLMAE MEDIA Co.,Ltd., Research and Development Department, Seoul, Korea, Republic of (kjh0523@gmail.com)

Damages in cities resulting from climate change are made irregularly and untypically, thus difficult to predict due to heavily concentrated buildings and population, etc. This study aims to introduce the results of our Urban Climatic Environment Assessment Model System(Model System hereinafter) as well as its construction, which is designed to provide impact assessment of heat waves in cities, to reduce damages, and to build capacities against it.

Our Model System is based on the Unified Model(UM : an integrated model of Korea Meteorological Administration), and satellite data is necessary to verify the Model System. However, we have developed high resolution (10m ~ 100m) urban assessment model to analyze the impacts of heat waves in city of Gwangju to help local government by developing and implementing environmental policies. The outputs of our Model System will contribute to the decision making.

Following two approaches were considered for impact assesment. Firstly, high spatial resolution model (in 10m to 100m level) using ensemble and down-scaling techniques can help identification of vulnerable areas in the city. Also, analyzed data can be linked to local GIS and land use map for analysis and assessment of the heat waves, which enables to make 48h heat wave forecast.

Secondly, CFD micro-scale analysis using super-computer enables to analyze the vulnerable areas with components of : temperature, wind, humidity, solar radiation quantity, cloud cover, etc. Data achieved via our Model System will be used as objective and scientific basis for developing heat wave policies. It will also give guidance for heat wave early warning.

It is expected that local governments can utilize our Model System to identify and analyze patterns and characteristics of heat waves in the city, and make decisions and develop environment-related policies on the objective and scientific basis preemptive response for vulnerable areas in the region.

Keywords : heat waves, Urban Climatic Environment Assessment Model System, spatial resolution, ensemble average, down-scaling, CFD, micro-scale, Early warning system

 

* This research was supported by a grant from Research Program funded by International Climate & Environment Center(ICEC).

How to cite: Oh, B., Hwang, C., Yun, W., and Kim, J.: A Study on the Operation of Early Warning System for Heat Waves in Gwangju Based on the Urban Climatic Environment Assessment Model System, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-3238, https://doi.org/10.5194/egusphere-egu2020-3238, 2020