Show simple item record

Detection of the trend and seasonal variation in tropospheric NO2 over China

dc.contributor.authorVan der A, R.J.
dc.contributor.authorPeters, D.H.M.U.
dc.contributor.authorEskes, H.
dc.contributor.authorBoersma, K.F.
dc.contributor.authorVan Roozendael, M.
dc.contributor.authorDe Smedt, I.
dc.contributor.authorKelder, H.M.
dc.date2006
dc.date.accessioned2016-11-22T11:57:29Z
dc.date.available2016-11-22T11:57:29Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/4499
dc.descriptionThe results of a trend study on the tropospheric NO2 column over China are presented, on the basis of measurements from the satellite instruments GOME and SCIAMACHY. From these observations, monthly averaged tropospheric NO2 distributions are determined for the period 1996 to 2005 on a 1° by 1° grid. A linear model with a seasonal component is used to fit these time series. The variance and the autocorrelation of the noise are used to calculate the significance of the trend. The results show a large growth of tropospheric NO2over eastern China, especially above the industrial areas with a fast economical growth. For instance, Shanghai had a linear significant increase in NO2 columns of 20% ± 6% per year (reference year 1996) in the period 1996-2005. The seasonal pattern of the NO2 concentration shows a difference between east and west China. In the east a NO2 maximum is found during wintertime, because of chemistry and anthropogenic activity. Contrary to this, in the western part of China the NO2 concentration reaches a maximum in summertime. This spatial difference correlates with the population distribution of China. Since there is negligible anthropogenic activity in west China this difference in seasonality of NO2 is attributed to natural emissions in west China.
dc.languageeng
dc.titleDetection of the trend and seasonal variation in tropospheric NO2 over China
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeAtmospheric chemistry
dc.subject.freeAtmospheric composition
dc.subject.freeGas emissions
dc.subject.freeMeteorological instruments
dc.subject.freeNitrogen oxides
dc.subject.freeTroposphere
dc.subject.freeatmospheric plume
dc.subject.freeatmospheric pollution
dc.subject.freedetection method
dc.subject.freeGOME
dc.subject.freehuman activity
dc.subject.freesatellite imagery
dc.subject.freeseasonal variation
dc.subject.freetroposphere
dc.subject.freeAsia
dc.subject.freeChina
dc.subject.freeEurasia
dc.subject.freeFar East
dc.source.titleJournal of Geophysical Research Atmospheres
dc.source.volume111
dc.source.issue12
dc.source.pageD12317
Orfeo.peerreviewedYes
dc.identifier.doi10.1029/2005JD006594
dc.identifier.scopus2-s2.0-33646348356


Files in this item

Thumbnail
Name:
VanderA(2006).pdf
Size:
3.677Mb
Format:
PDF
View/Open

This item appears in the following Collection(s)

Show simple item record