A new method for deriving trace gas emission inventories from satellite observations: The case of SO2 over China

作者：Kourtidis, Konstantinos^*; Georgoulias, Aristeidis K.; Mijling, Bas; van der A, Ronald; Zhang, Qiang; Ding, Jieying

来源：Science of the Total Environment, 2018, 612: 923-930.

DOI：10.1016/j.scitotenv.2017.08.313

• SO2
• Emissions
• China
• Trace gases
• Satellites
• OMI/Aura

A method is developed that allows the construction of spatial emission inventories. The method is applied for anthropogenic SO2 over China (0.25 degrees x 0.25 degrees). The Enhancement Ratio Method (ERM) allows for the calculation of SO2 emissions using relationships between gridded satellite measurements of SO2 and NO2 at low wind speeds, and satellite-based NOx emission estimates. Here, we derive SO2 emissions for five years (2007-2011). A large decrease of emissions during 2007-2009 and a modest increase between 2010 and 2011 is observed. The evolution of emissions over time calculated here is in general agreement with bottom-up inventories, although differences exist, not only between the current inventory and other inventories but also among the bottom up inventories themselves. The ERM-derived emissions are consistent, spatially and temporally, with existing inventories.

• 出版日期2018-1-15
• 单位清华大学