| Year of Publication | 2015 | Division | Applied Meteorology Research Division |
|---|---|---|---|
| Title | Study on heat environment changes in seoul metropolitan area using WRF-UCM: A Comparison between 2000 and 2009 | ||
| Author | 이보라 | ||
| Coauthor | 이대근, 남경엽, 이영곤, 김백조 | ||
| ISBN(ISSN) | Name of Journal | 한국기상학회 대기지 | |
| Category (International/Domestic) | 국내 | Vol. No. | 25(3) |
| Research Project Title | 차세대 도시농림융합스마트기상서비스개발 (2015년) | Publication Date | 2015-09-01 |
| Keywords | Urban canopy model, urbanization, urban heat island, land-use, heat flux | ||
This study examined the impact of change of land-use and meteorological condition
due to urbanization on heat environment in Seoul metropolitan area over a decade
(2000 and 2009) using Weather Research and Forecasting (WRF)-Urban Canopy Model (UCM).
The numerical simulations consist of three sets: meteorological conditions of (1) October
2000 with land-use data in 2000 (base simulation), (2) October 2009 with land-use data
in 2000 (meteorological condition change effect) and (3) October 2009 with land-use
data in 2009 (both the effects of land-use and meteorological condition change).
According to the experiment results, the change of land-use and meteorological condition
by urbanization over a decade showed different contribution to the change of heat
environment in Seoul metropolitan area. There was about 1℃ increase in near-surface (2 m)
temperature over all of the analyzed stations due to meteorological condition change.
In stations where the land-use type changed into urban, large temperature increase at
nighttime was observed by combined effects of meteorological condition and land-use
changes (maximum 4.23℃). Urban heat island (UHI) over 3℃ (temperature difference
between Seoul and Okcheon) increased 5.24% due to the meteorological condition
change and 26.61% due to the land-use change. That is, land-use change turned out
to be contributing to the strengthening of UHI more than the meteorological condition
change. Moreover, the land-use change plays a major role in the increase of sensible
heat flux and decrease of latent heat flux.
due to urbanization on heat environment in Seoul metropolitan area over a decade
(2000 and 2009) using Weather Research and Forecasting (WRF)-Urban Canopy Model (UCM).
The numerical simulations consist of three sets: meteorological conditions of (1) October
2000 with land-use data in 2000 (base simulation), (2) October 2009 with land-use data
in 2000 (meteorological condition change effect) and (3) October 2009 with land-use
data in 2009 (both the effects of land-use and meteorological condition change).
According to the experiment results, the change of land-use and meteorological condition
by urbanization over a decade showed different contribution to the change of heat
environment in Seoul metropolitan area. There was about 1℃ increase in near-surface (2 m)
temperature over all of the analyzed stations due to meteorological condition change.
In stations where the land-use type changed into urban, large temperature increase at
nighttime was observed by combined effects of meteorological condition and land-use
changes (maximum 4.23℃). Urban heat island (UHI) over 3℃ (temperature difference
between Seoul and Okcheon) increased 5.24% due to the meteorological condition
change and 26.61% due to the land-use change. That is, land-use change turned out
to be contributing to the strengthening of UHI more than the meteorological condition
change. Moreover, the land-use change plays a major role in the increase of sensible
heat flux and decrease of latent heat flux.
