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Trend detection in satellite observations of formaldehyde tropospheric columns

dc.contributor.authorDe Smedt, I.
dc.contributor.authorStavrakou, T.
dc.contributor.authorMüller, J.-F.
dc.contributor.authorVan Der A, R.J.
dc.contributor.authorVan Roozendael, M.
dc.date2010
dc.date.accessioned2016-03-30T12:01:16Z
dc.date.available2016-03-30T12:01:16Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/3167
dc.descriptionBeing an intermediate product in the oxidation of a large number of non-methane volatile organic compounds (NMVOCs), formaldehyde (H<inf>2</inf>CO) is a useful indicator of biogenic, pyrogenic and anthropogenic hydrocarbon emissions. We present the first trend study performed on H<inf>2</inf>CO satellite columns, retrieved from the GOME and SCIAMACHY instruments between 1997 and 2009. A linear model with a seasonal component is used to fit the time series of monthly averaged columns. The error and statistical significance of the inferred trends are estimated. The study focuses on Asia but results are also provided for large cities worldwide. Statistically significant positive trends of formaldehyde columns are observed over northeastern China (4% yr -1) and India (1.6% yr-1), related to strong increases in anthropogenic NMVOC emissions, whereas negative trends of about -3% yr -1 are observed over Tokyo as well as over cities of the northeast U.S. urban corridor as a result of effective pollution regulation measures. © 2010 by the American Geophysical Union.
dc.languageeng
dc.titleTrend detection in satellite observations of formaldehyde tropospheric columns
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeMethane
dc.subject.freeReaction intermediates
dc.subject.freeTime series
dc.subject.freeVolatile organic compounds
dc.subject.freeHydrocarbon emission
dc.subject.freeIntermediate product
dc.subject.freeLarge cities
dc.subject.freeLinear model
dc.subject.freeNon-methane volatile organic compounds
dc.subject.freePollution regulation
dc.subject.freeSatellite observations
dc.subject.freeStatistical significance
dc.subject.freeTrend detection
dc.subject.freeTropospheric columns
dc.subject.freeUrban corridors
dc.subject.freeFormaldehyde
dc.subject.freeanthropogenic source
dc.subject.freeatmospheric modeling
dc.subject.freebiogenic emission
dc.subject.freeemission control
dc.subject.freeenvironmental assessment
dc.subject.freeformaldehyde
dc.subject.freeGOME
dc.subject.freeoxidation
dc.subject.freesatellite imagery
dc.subject.freetime series
dc.subject.freetrend analysis
dc.subject.freetroposphere
dc.subject.freeurban atmosphere
dc.subject.freevolatile organic compound
dc.subject.freeChina
dc.subject.freeHonshu
dc.subject.freeIndia
dc.subject.freeJapan
dc.subject.freeKanto
dc.subject.freeTokyo [Kanto]
dc.subject.freeTokyo [Tokyo (PRF)]
dc.subject.freeUnited States
dc.source.titleGeophysical Research Letters
dc.source.volume37
dc.source.issue18
dc.source.pageL18808
Orfeo.peerreviewedYes
dc.identifier.doi10.1029/2010GL044245
dc.identifier.scopus2-s2.0-77957710024


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