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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Choosing meteorological input for the global modeling initiative assessment of high-speed aircraft
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Choosing meteorological input for the global modeling initiative assessment of high-speed aircraft

机译：为高速飞机的全球建模主动评估选择气象输入

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The global modeling initiative (GMI) science team is developing a three-dimensional chemistry and transport model (CTM) for use in assessment of the atmospheric effects of aviation. This model must be documented, be validated against observations, use a realistic atmospheric circulation, and contain numerical transport and photochemical modules representing atmospheric processes. The model must retain computational efficiency for multiple scenarios and sensitivity studies. To meet these requirements, a facility model concept was developed in which the different components of the CTM are evaluated separately. The assessment of the impact on the stratosphere of the exhaust of supersonic aircraft will depend strongly on the meteorological fields used by the CTM. Three data sets for the stratosphere were considered: the National Center for Atmospheric Research Community Climate Model (CCM2), the Goddard Earth Observing System data assimilation system, and the Goddard Institute for Space Studies general circulation model. Objective criteria were developed to identify the data set that provides the best representation of the stratosphere. Simulations of gases with simple chemical control were chosen to test various aspects of model transport. The data sets were evaluated and graded on their performance on these tests. The CCM2 meteorological data set has the highest score and was selected for GMI. This objective model evaluation establishes a physical basis for interpretation of differences between models and observations. Further, the method provides a quantitative basis for defining model errors, for discriminating between different models, and for ready reevaluation of improved models. This will lead to higher confidence in assessment calculations.
机译：全球建模倡议组织（GMI）的科学团队正在开发一种三维化学和运输模型（CTM），用于评估航空的大气影响。该模型必须形成文件，必须通过观察进行验证，使用真实的大气环流，并包含代表大气过程的数值传输和光化学模块。该模型必须保留用于多种方案和敏感性研究的计算效率。为了满足这些要求，开发了一种设施模型概念，其中分别评估了CTM的不同组件。对超音速飞机尾气对平流层影响的评估将在很大程度上取决于CTM所使用的气象领域。考虑了平流层的三个数据集：国家大气研究中心气候模型国家中心（CCM2），戈达德地球观测系统数据同化系统和戈达德空间研究所的一般环流模型。制定了客观标准以识别能最好地表示平流层的数据集。选择了具有简单化学控制的气体模拟来测试模型传输的各个方面。在这些测试中，对数据集进行了评估并对其性能进行了评级。 CCM2气象数据集得分最高，并被选为GMI。客观的模型评估为解释模型与观测值之间的差异奠定了物理基础。此外，该方法提供了用于定义模型误差，区分不同模型以及易于重新评估改进模型的定量基础。这将导致对评估计算的更高信心。

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