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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Soil moisture simulations in revised AMIP models
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Soil moisture simulations in revised AMIP models

机译：修改后的AMIP模型中的土壤水分模拟

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Soil moisture is important both in its influence on climate and for assessing impacts of future climate change. It is therefore necessary to simulate it correctly in global climate models. We have used the revisit simulations contributed by six of the Atmospheric Model Intercomparison Project 1 participating modeling groups to examine the impacts of model revisions, particularly the land surface representations, on soil moisture simulations, by comparing the simulations to actual soil moisture observations. The revised models do not show any systematic improvement in their ability to simulate observed seasonal variations of soil moisture over the regions studied. Many of the revised models continue to have a strong tendency toward dry soil conditions during Northern Hemisphere summer months, both globally and regionally. There are no indications of conceptually more realistic land surface representations producing better soil moisture simulations in the revised climate models. As the revised models continue to produce incorrect simulations of the seasonal cycle of regional precipitation, it is not possible to isolate the effect of land surface schemes on the simulations. The European Centre for Medium Range Weather Forecasts and National Centers for Environmental Prediction/National Center for Atmospheric Research reanalyses, however, which are driven by observed precipitation, do capture some of the observed interannual variability of soil moisture over Illinois. [References: 43]
机译：土壤水分在影响气候和评估未来气候变化的影响方面都非常重要。因此，有必要在全球气候模型中对其进行正确模拟。我们已经使用了六个大气模型比对项目1的参与模型小组提供的重访模拟，通过将模拟修正与实际土壤湿度观测值进行比较，研究了模型修订，尤其是地表表示对土壤湿度模拟的影响。修改后的模型在模拟所研究区域内土壤水分的季节性变化方面没有表现出任何系统的改进。在北半球的夏季，无论是在全球还是在区域上，许多修改后的模型仍然倾向于干旱土壤条件。没有迹象表明，在修订后的气候模型中，从概念上更现实的土地表面表示可以产生更好的土壤湿度模拟。由于修订后的模型继续对区域降水的季节周期产生不正确的模拟，因此不可能隔离出地表方案对模拟的影响。但是，由观测到的降水驱动的欧洲中型天气预报中心和国家环境预测中心/国家大气研究中心的重新分析确实捕获了伊利诺伊州土壤湿度的年际变化。 [参考：43]

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