HCFC-133a (CF3CH2Cl): OH rate coefficient, UV and infrared absorption spectra, and atmospheric implications

Details

• Journal Title:
  Geophysical Research Letters
• Personal Author:
  McGillen, Max R. ; Bernard, François ; Fleming, Eric L. ; Burkholder, James B.
• NOAA Program & Office:
  OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; CSL (Chemical Sciences Laboratory)
• Description:
  HCFC-133a (CF3CH2Cl), an ozone-depleting substance, is primarily removed from the atmosphere by gas-phase reaction with OH radicals and by UV photolysis. The rate coefficient, k, for the OH+HCFC-133a reaction was measured between 233 and 379K and is given by k(T)=(9.320.8)x10(-13)exp(-(1296 +/- 28)/T), where k(296K) was measured to be (1.10 +/- 0.02)x10(-14) (cm(3)molecule(-1)s(-1)) (2 sigma precision uncertainty). The HCFC-133a UV absorption spectrum was measured between 184.95 and 240nm at 213-323K, and a spectrum parameterization is presented. The HCFC-133a atmospheric loss processes, lifetime, ozone depletion potential, and uncertainties were evaluated using a 2-D atmospheric model. The global annually averaged steady state lifetime and ozone depletion potential (ODP) were determined to be 4.45 (4.04-4.90)years and 0.017 (0.001), respectively, where the ranges are based solely on the 2 sigma uncertainty in the kinetic and photochemical parameters. The infrared absorption spectrum of HCFC-133a was measured, and its global warming potential was determined to be 380 on the 100year time horizon.
• Source:
  Geophysical Research Letters, 42(14), 6098-6105.
• DOI:
  https://doi.org/10.1002/2015gl064939
• Document Type:
  Journal Article
• Rights Information:
  Other
• Compliance:
  Submitted
• Main Document Checksum:
  urn:sha256:f739c44f2c30fabe482a79e39afb29c8640797d52da46e8659554ff8fc722c50
• Download URL:
  https://repository.library.noaa.gov/view/noaa/21738/noaa_21738_DS1.pdf
• File Type:
  [PDF - 845.04 KB ]