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首页> 外文期刊>Geoscientific Model Development >An online emission module for atmospheric chemistry transport models: implementation in COSMO-GHG v5.6a and COSMO-ART v5.1-3.1
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An online emission module for atmospheric chemistry transport models: implementation in COSMO-GHG v5.6a and COSMO-ART v5.1-3.1

机译：大气化学输送模型的在线排放模块：在COSMO-GHG V5.6A和COSMO-ART V5.1-3.1中实现

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Emission inventories serve as crucial input for atmospheric chemistry transport models. To make them usable for a model simulation, they have to be pre-processed and, traditionally, provided as input files at discrete model time steps. In this paper, we present an “online” approach, which produces a minimal number of input data read-in at the beginning of a simulation and which handles essential processing steps online during the simulation. For this purpose, a stand-alone Python package “emiproc” was developed, which projects the inventory data to the model grid and generates temporal and vertical scaling profiles for individual emission categories. The package is also able to produce “offline” emission files if desired. Furthermore, we outline the concept of the online emission module (written in Fortran 90) and demonstrate its implementation in two different atmospheric transport models: COSMO-GHG and COSMO-ART. Simulation results from both modeling systems show the equivalence of the online and offline procedure. While the model run time is very similar for both approaches, input size and pre-processing time are greatly reduced when online emissions are utilized.
机译：排放清单用作大气化学输送模型的关键投入。为了使它们可用于模型模拟，必须预处理，传统上，以离散模型时间步骤提供作为输入文件的。在本文中，我们介绍了一个“在线”方法，它在模拟开始时产生最小数量的输入数据，并且在模拟期间在线处理基本处理步骤。为此目的，开发了一个独立的Python包“Emiproc”，它将清单数据投影到模型网格并为各个排放类别生成时间和垂直缩放配置文件。如果需要，该包也能够生成“离线”发射文件。此外，我们概述了在线排放模块的概念（在Fortran 90中编写），并证明其在两种不同的大气运输模型中的实现：COSMO-GHG和COSMO-艺术。两个建模系统的仿真结果显示了在线和离线程序的等价。虽然模型运行时间对于两种方法非常相似，但在在线排放时，输入大小和预处理时间大大减少了。

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