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    Trend detection in satellite observations of formaldehyde tropospheric columns

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    Authors
    De Smedt, I.
    Stavrakou, T.
    Müller, J.-F.
    Van Der A, R.J.
    Van Roozendael, M.
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    Discipline
    Earth and related Environmental sciences
    Subject
    Methane
    Reaction intermediates
    Time series
    Volatile organic compounds
    Hydrocarbon emission
    Intermediate product
    Large cities
    Linear model
    Non-methane volatile organic compounds
    Pollution regulation
    Satellite observations
    Statistical significance
    Trend detection
    Tropospheric columns
    Urban corridors
    Formaldehyde
    anthropogenic source
    atmospheric modeling
    biogenic emission
    emission control
    environmental assessment
    formaldehyde
    GOME
    oxidation
    satellite imagery
    time series
    trend analysis
    troposphere
    urban atmosphere
    volatile organic compound
    China
    Honshu
    India
    Japan
    Kanto
    Tokyo [Kanto]
    Tokyo [Tokyo (PRF)]
    United States
    Audience
    Scientific
    Date
    2010
    Metadata
    Show full item record
    Description
    Being an intermediate product in the oxidation of a large number of non-methane volatile organic compounds (NMVOCs), formaldehyde (H2CO) is a useful indicator of biogenic, pyrogenic and anthropogenic hydrocarbon emissions. We present the first trend study performed on H2CO 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.
    Citation
    De Smedt, I.; Stavrakou, T.; Müller, J.-F.; Van Der A, R.J.; Van Roozendael, M. (2010). Trend detection in satellite observations of formaldehyde tropospheric columns. , Geophysical Research Letters, Vol. 37, Issue 18, L18808, DOI: 10.1029/2010GL044245.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/3167
    doi: http://dx.doi.org/10.1029/2010GL044245
    scopus: 2-s2.0-77957710024
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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