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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >MOZART, a global chemical transport model for ozone and related chemical tracers 1. Model description [Review]
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MOZART, a global chemical transport model for ozone and related chemical tracers 1. Model description [Review]

机译：MOZART，全球臭氧及相关化学示踪剂的化学迁移模型1.模型描述[评论]

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摘要

We present a new global three-dimensional chemical-transport model (called MOZART) developed in the framework of the NCAR Community Climate Model (CCM) and aimed at studying the distribution and budget of tropospheric ozone and its precursors. The model, developed with a horizontal resolution of 2.8 degrees in longitude and latitude, includes 25 levels in the vertical between the Earth's surface and an upper boundary located at approximately 35 km altitude. In its present configuration the model calculates the global distribution of 56 chemical constituents with a timestep of 20 min, and accounts for surface emission and deposition, large-scale advective transport, subscale convective and boundary layer exchanges, chemical and photochemical transformations, as well as wet scavenging. Transport is simulated "off line" from CCM with dynamical variables provided every 3 hours from preestablished history tapes. Advection is calculated using the semi-Lagrangian transport scheme [Rasch and Williamson, 1990] developed for the MATCH model of Rasch et al. [1997]. Convective and boundary layer transports are expressed according to Hack [1994] and Holtslag and Boville [1993], respectively. A detailed evaluation of the model results is provided in a companion paper [Hauglustaine et al., this issue]. An analysis of the spatial and temporal variability in the chemical fields predicted by the model suggests that regional events such as summertime ozone episodes in polluted areas can be simulated by MOZART. [References: 107]
机译：我们提出了在NCAR社区气候模型（CCM）框架下开发的新的全球三维化学运输模型（称为MOZART），其目的是研究对流层臭氧及其前体的分布和预算。该模型以经度和纬度为2.8度的水平分辨率开发，在地球表面和位于大约35 km高度的上边界之间的垂直方向包括25个级别。在其当前配置中，该模型以20分钟的时间步长计算56种化学成分的全球分布，并说明了表面排放和沉积，大规模对流运输，次尺度对流和边界层交换，化学和光化学转化以及湿清除。使用从预先建立的历史记录磁带每隔3小时提供的动态变量，从CCM“离线”模拟运输。对流是根据为Rasch等人的MATCH模型开发的半拉格朗日输运方案[Rasch和Williamson，1990]计算的。 [1997]。对流层和边界层的运移分别根据Hack [1994]和Holtslag and Boville [1993]表示。随附的论文[Hauglustaine等，本期]中提供了对模型结果的详细评估。通过模型预测的化学场的时空变化分析表明，MOZART可以模拟区域事件，例如污染地区的夏季臭氧事件。 [参考：107]

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