Bottom up Isoprene emissions (open loop)

BVOC gas emissions from vegetation represent a hugely important contributor to the total emission of volatile organic compounds at the global scale. BVOCs in turn play a key role in tropospheric chemistry and impact both the formation of ozone photochemical smog and secondary organic aerosols, which both impact air quality. MEGAN is an open-sourced software package that has been adapted by researchers at NILU to operate with SURFEX model outputs and meteorological data from ECMWF. The MEGAN software calculates emissions of a wide range of BVOCs emitted by plants and aggregates these chemical components into representative chemical species defined in an external chemical mechanism. In our case, this done specifically is for the BVOCs defined (see Table 2 for full list) in the Regional Atmospheric Chemistry Mechanism (Stockwell et al., 1997) that is used in the MOCAGE (Guth et al., 2016) chemical transport model. MOCAGE is being used as the test model the SEEDS project since it is one of the CAMS regional atmospheric chemistry models.

https://www.seedsproject.eu/data/isop-ol

全球范围内，植物源挥发性有机化合物（BVOC）排放是总挥发性有机物排放量的关键贡献来源。而BVOCs在对流层化学过程中扮演关键角色，可影响臭氧光化学烟雾与二次有机气溶胶的生成，二者均会对空气质量造成显著影响。MEGAN是一款开源软件包，由NILU的研究人员适配优化，可结合SURFEX模式的输出结果与欧洲中期天气预报中心（ECMWF）的气象数据运行。该MEGAN软件可计算植物排放的多种BVOCs排放量，并将这些化学成分聚合为外部化学机制中定义的典型化学物种。本研究中，该聚合过程专门针对区域大气化学机制（Regional Atmospheric Chemistry Mechanism，Stockwell等，1997）中定义的BVOCs开展（完整清单见表2），该机制已被应用于MOCAGE（Guth等，2016）化学传输模式。由于MOCAGE是哥白尼大气监测服务（CAMS）旗下的区域大气化学模式之一，因此被用作SEEDS项目的测试模式。https://www.seedsproject.eu/data/isop-ol