Tropospheric Formaldehyde (CH 2 O) from Satellite Observations. Isabelle De Smedt 1 , M. Van Roozendael 1 , R. Van Der A 2 , H. Eskes 2 . 1: BIRA-IASB, 2: KNMI. Formaldehyde in the troposphere.
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Tropospheric Formaldehyde (CH2O) from Satellite Observations.
- Biogenic VOCs oxidation (isoprene)
- Anthropogenic hydrocarbon oxidation
- Biomass burning (as first and secondary product)
- Major source of CO
- Production of HO2
Optical densities: SC.σ(λ)
SC O3 = 2x1019 mol/cm²
SC NO2 = 5x1016
SC CH2O = 1x1016
SC BrO = 1x1014
1: CH2O Slant Columns
GOME CH2O SCD [x1015 mol/cm²]
Profile as seen by GOME
Apr.1996 – Dec.2001
Jan.2003 – Jun.2007
CH2O Vertical Columns
GOME – SCIAMACHY CH2O VCD [x1016 mol/cm²]
Jan. – Jun. 2003
Over the 6 first months of 2003:
CH2O Vertical Columns: America
CH2O Vertical Columns: Asia
CH2O Vertical Columns: Africa
CH2O as measured by SCIA on 26 August 2007 superimposed over an image made by MODIS. Due to the strong north-easterly wind the smoke from the forest fires is blown all the way to the coast of Lybia.