| 一个包含土壤和植被的区域气候模式及其性能检验 |
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| 引用本文： | 张耀存,钱永甫.一个包含土壤和植被的区域气候模式及其性能检验[J].大气科学,1995,19(3):329-338. |
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| 作者姓名： | 张耀存 钱永甫 |
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| 作者单位： | 南京大学大气科学系,南京 210093 |
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| 摘 要： | 本文研制了一个三维地气耦合的区域气候模式，该模式由大气、土壤和植被三个子模式组成，各子模式间通过动量、能量和水份交换过程进行相互作用。在大气子模式中提出用z-z*混合坐标系处理地形的新方法，并把诊断分析中的散度修订方案引入数值模式，使其在物理依据上更加合理。此外，模式中较为详细地考虑了影响区域气候形成和变化的物理过程。简单的数值试验表明，区域气候模式比较真实地模拟了土壤和植被冠层的温度日变化，对区域气候平均态也有一定的模拟能力，可较好地处理大地形，具有良好的稳定性能，并对下垫面热力非均匀性的响应也是敏感的。
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| 关 键 词： | 区域气候模式 z-z*混合坐标系 模式性能检验 |
A Regional Climate Model with Soil and Vegetation and Model Validation |
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| Zhang Yaocun and Qian Yongfu.A Regional Climate Model with Soil and Vegetation and Model Validation[J].Chinese Journal of Atmospheric Sciences,1995,19(3):329-338. |
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| Authors: | Zhang Yaocun and Qian Yongfu |
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| Abstract: | In this paper, a regional climate model is developed. The regional climate model consists of three submodels, i.e., soil submodel, vegetation submodel and atmospheric submodel. Soil, vegetahon and atmosphere are linked in a coupled system through transfer and exchange of heat, water and momentum. In order to deal with the influences of topography on the regional climate, the mixed vertical coordinate systems in which combines the rectangular coordinate systems with the terrain-following coordinate system are adopted in the atmosphere. Divergence modification scheme is used in the model so that the physical basis of the model is rational. In addition, important physics processes are included.By carrying out simple numerical experiments it is shown that the regional climate model can simulatetemperature diurnal varition of soil and canopy and treat topography well. The model is also very stable and sensitive to the inhomogeneities of underlying surface conditions. |
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