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자료유형
학술저널
저자정보
저널정보
한국기상학회 Asia-Pacific Journal of Atmospheric Sciences Journal of the Korean Meteorological Society Vol.43 No.4
발행연도
2007.11
수록면
411 - 427 (17page)

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This study investigates the sensitivity of convective parameterization schemes (CPS) in a regional climate change scenario simulated by using a RegCM3 double-nested modeling system. The validation of a recent climate (1971-2000) and projection of a future climate (2051-2080) are discussed, with a focus on the comparison between both simulations implementing two different CPS, namely, the Grell scheme (Grell) and the MIT-Emanuel scheme (EMU). Based on the recent climate simulations, the EMU simulation shows a considerable improvement compared to the Grell simulation, indicating a reduction of cold and dry biases in the summer season. In general, the convective precipitation derived by EMU is larger than that of Grell, which can be explained by a large amount of moist static energy, being more favorable for activating convection. However, the signal of future change derived by the difference between the recent and future climate simulations tends to be insensitive to the characteristics of the baseline climate condition due to the subtraction of the systematic error in the underlying model. Both projections (Grell vs. EMU) agree in the direction of climate change, giving us more confidence in the projected temperature and precipitation changes. The temperature change shows a well-recognized feature of a warming signal with a maximum in winter, indicating statistical significance at the 5% confidence level in all seasons. For precipitation changes, the statistical significance is restricted to the cold season. The enhancement of winter precipitation is significant, increasing by approximately 50% during 2051-2080.

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Abstract
1. Introduction
2. Model and experiment design
3. Results
4. Conclusion and Discussion
Acknowledgements
REFERENCES

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