Top-Down NOx Emissions of European Cities Based on the Downwind Plume of Modelled and Space-Borne Tropospheric NO2 Columns

Verstraeten, Willem W ; Boersma, Klaas Folkert ; Douros, John ; Williams, Jason E ; Eskes, Henk ; Liu, Fei[Point of Contact] ; Beirle, Steffen ; Delcloo, Andy

关键词: AURA SPACECRAFT;    CITIES;    ESTIMATES;    EXHAUST EMISSION;    MATHEMATICAL MODELS;    NITROGEN DIOXIDE;    NITROGEN OXIDES;    OZONE;    PLUMES;    TROPOSPHERE;   

RP-ID  :  GSFC-E-DAA-TN61348

学科分类：污染

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Top-down estimates of surface NOX emissions were derived for 23 European cities based on the downwind plume decay of tropospheric nitrogen dioxide (NO2) columns from the LOTOS-EUROS (Long Term Ozone Simulation-European Ozone Simulation) chemistry transport model (CTM) and from Ozone Monitoring Instrument (OMI) satellite retrievals, averaged for the summertime period (April-September) during 2013. Here we show that the top-down NOX emissions derived from LOTOS-EUROS for European urban areas agree well with the bottom-up NOX emissions from the MACC-III inventory data (R(exp 2) = 0.88) driving the CTM demonstrating the potential of this method. OMI top-down NOX emissions over the 23 European cities are generally lower compared with the MACC-III emissions and their correlation is slightly lower (R(exp 2) = 0.79). The uncertainty on the derived NO2 lifetimes and NOX emissions are on average ~55% for OMI and ~63% for LOTOS-EUROS data. The downwind NO2 plume method applied on both LOTOS-EUROS and OMI tropospheric NO2 columns allows to estimate NOX emissions from urban areas, demonstrating that this is a useful method for real-time updates of urban NOX emissions with reasonable accuracy.