Gaseous chemistry and aerosol mechanism developments for version 3.5.1 of the online regional model, WRF-Chem
Gaseous chemistry and aerosol mechanism developments for version 3.5.1 of the online regional model, WRF-Chem
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DOI：
10.5194/gmd-7-2557-2014
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发表时间：
2014-01-01
影响因子：
5.1
通讯作者：
McFiggans, G.
中科院分区：
文献类型：
--
作者：
Archer-Nicholls, S.;Lowe, D.;McFiggans, G.
我们已经取得了一些发展的天气，研究和预报模式与化学（WRF-Chem）相结合，目的是提高模型预测的痕量大气气相化学和气溶胶成分，以及空气质量和天气之间的相互作用。使用动力学预处理器（KPP）接口，添加了通用反应中间体气相化学机理（CRIV 2-R5）的简化形式，以实现更明确的VOC降解模拟。N2 O 5非均相化学已添加到现有的部分MOSAIC气溶胶模块中，并耦合到CRIv 2-R5和现有的CBM-Z气相方案。还对海洋喷雾气溶胶排放表示法进行了修改，允许在海洋喷雾气溶胶中列入主要有机物质。我们一直致力于欧洲域，特别注重使模型适合夜间化学和氧化的研究在英国大气中的硝酸根。适当的排放，风场和化学边界条件的驱动下，实施不同的发展说明，使用WRF-化学3.4.1的修改版本，以证明这些变化在西北欧域的影响。这些进展在WRF-Chem 3.5.1版及以后版本中公开。
We have made a number of developments to the Weather, Research and Forecasting model coupled with Chemistry (WRF-Chem), with the aim of improving model prediction of trace atmospheric gas-phase chemical and aerosol composition, and of interactions between air quality and weather. A reduced form of the Common Reactive Intermediates gas-phase chemical mechanism (CRIv2-R5) has been added, using the Kinetic Pre-Processor (KPP) interface, to enable more explicit simulation of VOC degradation. N2O5 heterogeneous chemistry has been added to the existing sectional MOSAIC aerosol module, and coupled to both the CRIv2-R5 and existing CBM-Z gas-phase schemes. Modifications have also been made to the sea-spray aerosol emission representation, allowing the inclusion of primary organic material in sea-spray aerosol. We have worked on the European domain, with a particular focus on making the model suitable for the study of nighttime chemistry and oxidation by the nitrate radical in the UK atmosphere. Driven by appropriate emissions, wind fields and chemical boundary conditions, implementation of the different developments are illustrated, using a modified version of WRF-Chem 3.4.1, in order to demonstrate the impact that these changes have in the Northwest European domain. These developments are publicly available in WRF-Chem from version 3.5.1 onwards.