RegCM4가 모의한 RCP 시나리오에 따른 동북아시아 지역의 고해상도 미래기후 변화
Future Climate Changes over North-East Asian Region Simulated by RegCM4 Based on the RCP Scenarios
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초록
In this study, long term simulations for current(1979-2010) and future(2019-2050) climate over North-East Asian region were performed using RegCM4 driven by HadGEM2-AO provided by the KMA(Korean Meteorological Administration). The spatial resolution is 12.5km and two RCP scenarios(4.5, 8.5) are applied for the future climate simulation. The RegCM4 simulates well the spatial and temporal variations of air temperature of current climate. However, it weakly simulates the intensity of rain band associated with the seasonal march of the East Asian summer monsoon and thereby significantly under simulates the summer rainfall and fails in reproducing the seasonal and spatial variations of precipitation. The 20-year averaged differences between current(1986-2005) and future(2031-2050) simulations showed that the temperature increases are generally greater in RCP8.5(1.93K) than RCP4.5(1.86K) and all the changes are statistically significant at 1% level. In general, the temperature increases are greater in the northern region(autumn, winter) than in the southern region(spring, summer) irrespective of RCP scenarios. The temperature over South Korea is expected to increase by 1.53K to 1.87K irrespective of RCP scenarios and seasons. The precipitation changes vary significantly according to the season and region irrespective of RCP scenarios and the changes of spring and autumn in the certain regions are statistically significant at 5% level. The precipitation over South Korea is expected to increase by +0.42mm/day in RCP4.5 during spring but it is expected to significantly decrease during autumn(-0.35mm/day) and in RCP 8.5 during summer(-0.30mm/day).
Abstract
In this study, long term simulations for current(1979-2010) and future(2019-2050) climate over North-East Asian region were performed using RegCM4 driven by HadGEM2-AO provided by the KMA(Korean Meteorological Administration). The spatial resolution is 12.5km and two RCP scenarios(4.5, 8.5) are applied for the future climate simulation. The RegCM4 simulates well the spatial and temporal variations of air temperature of current climate. However, it weakly simulates the intensity of rain band associated with the seasonal march of the East Asian summer monsoon and thereby significantly under simulates the summer rainfall and fails in reproducing the seasonal and spatial variations of precipitation. The 20-year averaged differences between current(1986-2005) and future(2031-2050) simulations showed that the temperature increases are generally greater in RCP8.5(1.93K) than RCP4.5(1.86K) and all the changes are statistically significant at 1% level. In general, the temperature increases are greater in the northern region(autumn, winter) than in the southern region(spring, summer) irrespective of RCP scenarios. The temperature over South Korea is expected to increase by 1.53K to 1.87K irrespective of RCP scenarios and seasons. The precipitation changes vary significantly according to the season and region irrespective of RCP scenarios and the changes of spring and autumn in the certain regions are statistically significant at 5% level. The precipitation over South Korea is expected to increase by +0.42mm/day in RCP4.5 during spring but it is expected to significantly decrease during autumn(-0.35mm/day) and in RCP 8.5 during summer(-0.30mm/day).
참고문헌 (33)
- 명지수, "선형 회귀 기법을 이용한 지역기후모델의 기온 모의자료 수준 개선", 기후연구, 7(3), pp.255~270 (2012), 기후연구소
- 성장현, "대표농도경로 (RCP)에 따른 21세기 말 우리나라 극한강수 전망", 대기, 22(2), pp.221~231 (2012), 한국기상학회
- 오석근, "CORDEX 동아시아 영역에서 경계조건 및 적운모수화방안이 RegCM4를 이용한 남한 지역 기후모의에 미치는 영향 분석", 한국지구과학회지, 32(4), pp.373~387 (2011), 한국지구과학회
- 오석근, "CORDEX 동아시아 지역에서 HadGEM2-AO를 경계조건으로 처방한 RegCM4의 상세 지역기후 모의성능", 한국지구과학회지, 32(7), pp.732~749 (2011), 한국지구과학회
- 이효신, "IPCC AR5 시나리오 산출을 위한 HadGEM2-AO 성능평가", 한국기상학회 가을 학술대회, pp.272~273 (2009)
- Cha, D. H., "Reduction of systematic errors in regional climate simulations of the summer monsoon over East Asia and the western North Pacific by applying the spectral nudging technique", Journal of Geophysical Research, 114 (2009)[DOI]
- Charney, J. G., "Dynamics of deserts and drought in Sahel", Journal of the Royal Meteorological Society, 101, pp.193~202 (1975)
- Collins, W. J, "Development and evaluation of an Earth-system model – HadGEM2", Geoscientific Model Development Discussions, 4 (2011)[DOI]
- Emanuel, K. A., "A scheme for representing cumulus convection in large-scale models", Journal of the Atmospheric Sciences, 48, pp.2313~2335 (1991)
- Feng, J. M., "Simulation of extreme climate events over China with different regional climate models", Atmospheric and Oceanic Science Letters, 4, pp.47~56 (2011)
- Giorgi, F., "Introduction to special section: regional climate modeling revisited", Journal of Geophysical Research, 104, pp.6335~6352 (1999)
- Giorgi, F., "Tests of precipitation parameterization available in the latest version of the NCAR regional climate model (RegCM) over the continental U.S", Journal of Geophysical Research, 104, pp.6353~6376 (1999)
- Giorgi. F., "RegCM4 : model description and preliminary test over multi CORDEX domains, Climate Research", Climate Research, 52, pp.7~29 (2012)
- Grell, G. A., "Prognostic evaluation of assumptions used by cumulus parameterization", Monthly Weather Review, 121, pp.764~787 (1993)
- Hewitt, H. T., "Design and implementation of the infrastructure of HadGEM3: the next-generation Met Office climate modeling system", Geosci. Model Dev. Discuss, 3, pp.1861~1937 (2010)
- Holtslag, A. A. M., "A high resolution air mass transformation model for short-range weather forecasting", Monthly Weather Review, 118, pp.1561~1575 (1990)
- Im, E. S., "Characteristics of extreme climate sequences over Korea using a regional climate change scenario", SOLA, 3, pp.2007~2005 (2007)[DOI]
- Im, E. S., "Multi-decadal scenario simulation over Korea using a one-way double-nested regional climate model system. Part 1: recent climate simulation (1971-2000)", Climate Dynamics, 38, pp.759~780 (2007)
- Im, E. S., "Multi-decadal scenario simulation over Korea using a one-way double-nested regional climate model system. Part 2: Future climate projection (2021-2050)", Climate Dynamics, 30, pp.239~254 (2007)
- Climate Change 2007, Synthesis report. Contribution of working groups I, II and III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, "IPCC", IPCC, 104~ (2007)
- Kanamitsu, M., "NCEP-DOE AMIP-II reanalysis (R-2)", American Meteorological Society, 93, pp.1631~1643 (2002)
- Kiehl, J. T., "Description of NCAR Community Climate Model(CCM3)", NCAR Technical Note NCAR, 1996, pp.152~
- Kim, C. S., "Prospects of Using Bayesian model averaging for the calibration of one-month forecasts of surface air temperature over South Korea", APJAS (2012)
- Latif, M., "A Review of the predictability and prediction of ENSO, Journal of Geophysical Research", Journal of Geophysical Research, 103, pp.14375~14393 (1998)
- Lee, D. K., "Ten-year east Asian summer monsoon simulation using a regional climate model(RegCM2)", Journal of Geophysical Research, 105(22), pp.29565~29577 (2000)
- Oh, S. G., "Impact of Boundary Conditions on Precipitation and Temperature Extremes over South Korea in the CORDEX Regional Climate Simulation Using RegCM4", APJAS (2012)
- Oleson, K. W., "Improvements to the community land model and their impact on the hydrological cycle", Journal of Geophysical Research-Biogeosciences, 113(G1) (2008)[DOI]
- Park, E. H., "Characteristics of an East-Asian summer monsoon climatology simulated by the RegCM3", Meteorology and Atmospheric Physics, 100, pp.139~158 (2008)
- Suh, M. S., "Develop-ment of new ensemble methods based on the performance skills of regional climate models over South Korea", Journal of Climate, pp.7067~7082 (2012)[DOI]
- Zhang, D. F., "Simulation of present climate over East Asia by a regional climate model", Journal of Tropical Meteorology, 14, pp.19~23 (2008)