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首页> 外文期刊>Climatic Change >The improvement of a regional climate model by coupling a land surface model with eco-physiological processes: A case study in 1998
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The improvement of a regional climate model by coupling a land surface model with eco-physiological processes: A case study in 1998

机译：通过将地表模型与生态生理过程耦合来改善区域气候模型：1998年的案例研究

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摘要

The Atmospheric-Vegetation Interaction Model (AVIM) is coupled with a Regional Integrated Environment Modeling System (RIEMS) to improve the regional simulation of climate variables. A case study in 1998 is implemented to study the improvement mechanism through land-air interaction in East Asia, especially in Asian summer monsoon regions. The coupled model reduces the warming bias in July in East China through the surface heat fluxes changes. Compared to the original model of RIEMS, the strong precipitation of eastern China in July is weakened by coupling of the interactive vegetation. The surface heat flux in uncoupled model is remarkably overestimated in these regions, and the enhanced heating from land surface, particularly with latent heat flux in July, will produce the overestimated temperature and precipitation in East China. Through coupling AVIM with RIEMS, the simulated area-averaged latent heat flux of two key regions decreases (e.g. from 132.36 to 103.13 W/m(2) over the region 1 between 105-125A degrees E and 20-40A degrees N) in July, which makes the overestimated temperature and precipitation declined, respectively.
机译：大气-植被相互作用模型（AVIM）与区域综合环境建模系统（RIEMS）结合使用，以改善气候变量的区域模拟。 1998年进行了一个案例研究，以研究东亚尤其是亚洲夏季风地区通过陆-气相互作用的改善机制。耦合模型通过表面热通量的变化降低了华东地区7月的变暖偏向。与原始的RIEMS模型相比，互动植被的耦合减弱了7月中国东部的强降水。在这些地区，非耦合模型中的表面热通量被显着高估，而陆地表面热量的增加，特别是7月的潜热通量，将导致华东地区的温度和降水被高估。通过将AVIM与RIEMS耦合，两个关键区域的平均面积平均潜热通量在7月降低了（例如，在E-105-125A和N-20-40A之间的区域1上，从132.36降低到103.13 W / m（2））。 ，这分别使温度和降水被高估了。

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