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자료유형
학술저널
저자정보
저널정보
한국기상학회 Asia-Pacific Journal of Atmospheric Sciences 한국기상학회지 제39권 제2호
발행연도
2003.4
수록면
221 - 237 (17page)

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Increase of the horizontal resolution is crucial for realistic climate simulation using atmospheric general circulation model(AGCM), together with enhancement of the representation of physical, dynamical, and chemical processes in earth’s climate system. In this study, we developed a high resolution AGCM with 2°(longitude)×2°(latitude) grid size, based on the original low resolution YONU AGCM Tr7 with 5o(longitude)×4o(latitude) grid size. This development was focused on the construction of some input datasets such as land-sea mask, global topography, orographic roughness length, and land surface type for matching the new grid structure. In addition, we prepared high resolution boundary condition datasets which should be specified in the model including global distributions of monthly sea surface temperature and sea ice concentration as a lower boundary conditions, and of climatological monthly mean total ozone and vertically-averaged temperature of lower stratosphere as a upper boundary conditions. Some critical modifications of the model source code were also needed. We performed 6-year integrations under AMIP Ⅱ standard experimental conditions by using the low and high resolution models, respectively. Through the model-to-model and model-to-observation comparison, we assessed performance of the high resolution AGCM with respect to large-scale mean fields of surface climate variables(precipitation, surface air temperature), Indian and East Asian monsoon circulations and interannaul variabilities in the tropics. This validation confirmed our success of the development of high resolution AGCM. And also we examined the model sensitivities to increase of the horizontal resolution in the aspects of the current climate simulation including global energy budget, large-scale pressure and flow system, and tropical activities.

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Abstract
1. 서론
2. YONU AGCM Tr7의 개요
3. 고해상도 모형의 개발 및 수치 실험
4. 모사 기후의 검증
5. 수평 해상도 증가에 대한 모사 기후의 민감도
6. 토의 및 결론
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