Assessing the Sensitivity of the OMI-NO2 Product to Emission Changes across Europe

Remote Sensing

Martijn Schaap¹  Richard Kranenburg²  Lyana Curier²  Magdalena Jozwicka²  Enrico Dammers² 

[1] Dutch Organisation for Applied Scientific Research (TNO), P.O. Box 80015, Utrecht 3508 TA, The Netherlands;

关键词: nitrogen dioxide;    OMI;    source attribution;    chemistry transport model;   

DOI  :  10.3390/rs5094187

来源: mdpi

【 摘 要 】

The advent of satellite data has provided a source of independent information to monitor trends in tropospheric nitrogen dioxide levels. To interpret these trends, one needs to know the sensitivity of the satellite retrieved NO₂ column to anthropogenic emissions. We have applied a chemistry transport model to investigate the sensitivity of the modeled NO₂ column, sampled at the OMI (Ozone Monitoring Instrument) overpass time and location and weighted by the OMI averaging kernel, to emission sources across Europe. The most important contribution (∼35%) in Western Europe is made by road transport. Off-road transport and industrial combustion each contribute 10%–15% across continental Europe. In Eastern Europe, power plant contributions are of comparable magnitude as those of road transport. To answer the question if the OMI-NO₂ trends can be translated directly into emission changes, we assessed the anticipated changes in OMI-NO₂ between 2005 and 2020. Although the results indicated that for many countries, it is indeed possible, for medium- and small-sized coastal countries, the contribution of the increasing shipping emissions in adjacent sea areas may mask a significant part of national emission reductions. This study highlights the need for a combined use of models, a priori emission estimates and satellite data to verify emission trends.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland