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Regional climate modeling for Asia
Geoscience Letters ( IF 4 ) Pub Date : 2020-08-14 , DOI: 10.1186/s40562-020-00162-8
Dong-Kyou Lee , Dong-Hyun Cha

The regional climate model (RCM) with higher resolution and sophisticated physical processes can reproduce and project fine-scale climate information, which cannot be captured by the global climate model (GCM). Therefore, we developed the Seoul National University Regional Climate Model (SNURCM) in the 1990s to simulate the intrinsic and detailed climate prevailing in Asia. In this study, we reviewed the developmental processes of the SNURCM and its application researches. In the simulation of regional climate over Asia, systematic errors can be generated because of natural characteristics such as complex land-surface conditions and topography, warm ocean conditions, and strong seasonal monsoon circulation and convection. Numerous methods and techniques have been applied to reduce these errors and improve the SNURCM. For long-term simulations without climate drift, the spectral nudging technique as well as the traditional relaxation method was employed for the boundary conditions. To represent reasonable interactions between earth systems, a simple ocean model and an advanced land-surface model were implemented into the SNURCM. Physical schemes for precipitation and vertical diffusion developed for short-term numerical weather prediction models were optimized or improved for long-term simulation. The SNURCM has been applied to future climate projection, reproduction of extreme climate, and seasonal forecasting. Furthermore, the model has served as a part of the multi-model comparison program and an ensemble of international research programs.

中文翻译:

亚洲区域气候模拟

具有更高分辨率和复杂物理过程的区域气候模型(RCM)可以复制和投影精细的气候信息,而全球气候模型(GCM)无法捕获这些信息。因此,我们在1990年代开发了首尔国立大学区域气候模型(SNURCM),以模拟亚洲普遍存在的固有和详细的气候。在这项研究中,我们回顾了SNURCM的发展过程及其应用研究。在模拟亚洲区域气候时,由于自然特征(例如复杂的地表条件和地形,温暖的海洋条件以及强烈的季风季风环流和对流)会产生系统误差。已经应用了许多方法和技术来减少这些错误并改善SNURCM。对于没有气候漂移的长期模拟,边界条件采用频谱微调技术以及传统的松弛方法。为了表示地球系统之间的合理相互作用,在SNURCM中实现了简单的海洋模型和高级的地表模型。为长期数值模拟优化或改进了为短期数值天气预报模型开发的降水和垂直扩散物理方案。SNURCM已应用于未来的气候预测,极端气候的再现以及季节预报。此外,该模型已成为多模型比较程序的一部分,并且是国际研究程序的集合。边界条件采用频谱微调技术以及传统的松弛方法。为了表示地球系统之间的合理相互作用,在SNURCM中实现了简单的海洋模型和高级的地表模型。为长期数值模拟优化或改进了为短期数值天气预报模型开发的降水和垂直扩散物理方案。SNURCM已应用于未来的气候预测,极端气候的再现以及季节预报。此外,该模型已成为多模型比较程序的一部分,并且是国际研究程序的集合。边界条件采用频谱微调技术以及传统的松弛方法。为了表示地球系统之间的合理相互作用,在SNURCM中实现了简单的海洋模型和高级的地表模型。为长期数值模拟优化或改进了为短期数值天气预报模型开发的降水和垂直扩散物理方案。SNURCM已应用于未来的气候预测,极端气候的再现以及季节预报。此外,该模型已成为多模型比较程序的一部分,并且是国际研究程序的集合。为长期数值模拟优化或改进了为短期数值天气预报模型开发的降水和垂直扩散物理方案。SNURCM已应用于未来的气候预测,极端气候的再现以及季节预报。此外,该模型已成为多模型比较程序的一部分,并且是国际研究程序的集合。为长期数值模拟优化或改进了为短期数值天气预报模型开发的降水和垂直扩散物理方案。SNURCM已应用于未来的气候预测,极端气候的再现以及季节预报。此外,该模型已成为多模型比较程序的一部分,并且是国际研究程序的集合。
更新日期:2020-08-15
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