The Massachusetts Institute of Technology Integrated Global System Model (IGSM) is designed for analyzing the global environmental changes that may result from anthropogenic causes, quantifying the uncertainties associated with the projected changes, and assessing the costs and environmental effectiveness of proposed policies to mitigate climate risk. The IGSM consists of the Massachusetts Institute of Technology Earth System Model (MESM) of intermediate complexity and the Economic Projections and Policy Analysis model. This paper documents the current version of the MESM, which includes a two‐dimensional (zonally averaged) atmospheric model with interactive chemistry coupled to the zonally averaged version of Global Land System model and an anomaly‐diffusing ocean model.

中文翻译：

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MIT地球系统模型（MESM）的描述和评估

麻省理工学院全球综合系统模型（IGSM）旨在分析人为原因可能导致的全球环境变化，量化与预计变化相关的不确定性，以及评估旨在降低气候风险的拟议政策的成本和环境有效性。IGSM由具有中等复杂性的麻省理工学院地球系统模型（MESM）和经济预测与政策分析模型组成。本文记录了MESM的当前版本，其中包括具有交互化学作用的二维（区域平均）大气模型，全球土地系统模型的区域平均版本和异常扩散海洋模型。