title: Relative tropospheric photolysis rates of acetaldehyde and formaldehyde isotopologues measured at the European photoreactor facility.
abstract: The photolysis rates of HCHO, DCDO, CH(3)CHO, and CH(3)CDO are studied by long-path FTIR spectroscopy in natural tropospheric conditions at the European Photoreactor Facility (EUPHORE) in Valencia, Spain. Average relative photolysis rates j(HCHO)/j(DCDO) = 3.15 +/- 0.08 and j(CH(3)CHO)/j(CH(3)CDO) = 1.26 +/- 0.03 are obtained from three days of experiments for each reaction in the period June 17 to July 7, 2006.
authors.affiliation: Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen, Universitetsparken 5 DK-2100 Copenhagen OE, Denmark.
authors.forename: Elna J K
authors.initials: EJ
authors.lastname: Nilsson
authors.forename: Lihn
authors.initials: L
authors.lastname: Bache-Andreassen
authors.forename: Matthew S
authors.initials: MS
authors.lastname: Johnson
authors.forename: Claus J
authors.initials: CJ
authors.lastname: Nielsen