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A Satellite-Based Indicator for Diagnosing Particulate Nitrate Sensitivity to Precursor Emissions: Application to East Asia, Europe, and North America

dc.contributor.authorDang, R.
dc.contributor.authorJacob, D.J.
dc.contributor.authorZhai, S.
dc.contributor.authorYang, L.H.
dc.contributor.authorPendergrass, D.C.
dc.contributor.authorCoheur, P.
dc.contributor.authorClarisse, L.
dc.contributor.authorVan Damme, M.
dc.contributor.authorChoi, J.-S.
dc.contributor.authorPark, J.-S.
dc.contributor.authorLiu, Z.
dc.contributor.authorXie, P.
dc.contributor.authorLiao, H.
dc.date2024
dc.date.accessioned2024-11-14T11:33:54Z
dc.date.available2024-11-14T11:33:54Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/13521
dc.descriptionParticulate nitrate is a major component of fine particulate matter (PM2.5) and a key target for improving air quality. Its formation is varyingly sensitive to emissions of nitrogen oxides (NOx ≡ NO + NO2), ammonia (NH3), and volatile organic compounds (VOCs). Diagnosing the dominant sensitivity is critical for effective pollution control. Here, we show that satellite observations of the NO2 column and the NH3/NO2 column ratio can effectively diagnose the dominant sensitivity regimes in polluted regions of East Asia, Europe, and North America, in different seasons, though with reduced performance in the summer. We demarcate the different sensitivity regimes using the GEOS-Chem chemical transport model and apply the method to satellite observations from the OMI (NO2) and IASI (NH3) in 2017. We find that the dominant sensitivity regimes vary across regions and remain largely consistent across seasons. Sensitivity to NH3 emissions dominates in the northern North China Plain (NCP), the Yangtze River Delta, South Korea, most of Europe, Los Angeles, and the eastern United States. Sensitivity to NOx emissions dominates in central China, the Po Valley in Italy, the central United States, and the Central Valley in California. Sensitivity to VOCs emissions dominates only in the southern NCP in the winter. These results agree well with those of previous local studies. Our satellite-based indicator provides a simple tool for air quality managers to choose emission control strategies for decreasing PM2.5 nitrate pollution.
dc.languageeng
dc.titleA Satellite-Based Indicator for Diagnosing Particulate Nitrate Sensitivity to Precursor Emissions: Application to East Asia, Europe, and North America
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeAnions
dc.subject.freeParticulate matter
dc.subject.freePrecursors
dc.subject.freeRedox reactions
dc.subject.freeVolatile organic compounds
dc.subject.freePM2.5 nitrate pollution
dc.subject.freesatellite indicator
dc.subject.freesensitivity regime
dc.subject.freeair quality management
dc.subject.freenitrogen oxides
dc.subject.freeammonia
dc.subject.freevolatile organic compounds
dc.source.titleEnvironmental Science & Technology
dc.source.volume58
dc.source.issue45
Orfeo.peerreviewedYes
dc.identifier.doi10.1021/acs.est.4c08082
dc.identifier.url


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