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Validation of the Atmospheric Chemistry Experiment by noncoincident MkIV balloon profiles

Journal Article


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Abstract


  • We have compared volume mixing ratio profiles of atmospheric trace gases measured by the Atmospheric Chemistry Experiment (ACE) version 2.2 and the MkIV solar occultation Fourier transform infrared spectrometers. These gases are H 2O, O 3, N 2O, CO, CH 4, HNO 3, HF, HCl, OCS, ClONO 2, HCN, CH 3Cl, CF 4, CCl 2F 2, CCl 3F, COF 2, CHF 2Cl, and SF 6. Due to the complete lack of close spatiotemporal coincidences between the ACE occultations and the MkIV balloon flights, we used potential temperatures and equivalent latitudes from analyzed meteorological fields to find comparable ACE and MkIV profiles. The results show excellent agreement for CH 4, N 2O, and other long-lived gases but slightly poorer agreement for shorter-lived species like CO, O 3, and HCN. For example, in the upper troposphere (∼400-650 K), maximum differences between MkIV and ACE are 2.4% for CH 4, 1.7% for N 2O, -12.4% for CO, -15.9% for O 3, and -5.6% for HCN. In the lower stratosphere (∼650-900 K), maximum MkIV-ACE differences are 7.6% for CH 4, 14.1% for N 2O, 7.3% for CO, -9.2% for O 3, and 31.5% for HCN. Apart from a small vertical misregistration problem, the overall agreement between MkIV and ACE is very good. Copyright 2011 by the American Geophysical Union.

UOW Authors


  •   Velazco, Voltaire
  •   Toon, Geoffrey C. (external author)
  •   Blavier, Jean-Francois L. (external author)
  •   Kleinbohl, A (external author)
  •   Manney, G L. (external author)
  •   Daffer, W (external author)
  •   Bernath, Peter (external author)
  •   Walker, K A. (external author)
  •   Boone, C D. (external author)

Publication Date


  • 2011

Citation


  • velazco, V. A., Toon, G. C., Blavier, J. L., Kleinbohl, A., Manney, G. L., Daffer, W. H., Bernath, P. F., Walker, K. A. & Boone, C. (2011). Validation of the Atmospheric Chemistry Experiment by noncoincident MkIV balloon profiles. Journal of Geophysical Research, 116 (6), 1-17.

Scopus Eid


  • 2-s2.0-79953241644

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=8636&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/5293

Has Global Citation Frequency


Number Of Pages


  • 16

Start Page


  • 1

End Page


  • 17

Volume


  • 116

Issue


  • 6

Abstract


  • We have compared volume mixing ratio profiles of atmospheric trace gases measured by the Atmospheric Chemistry Experiment (ACE) version 2.2 and the MkIV solar occultation Fourier transform infrared spectrometers. These gases are H 2O, O 3, N 2O, CO, CH 4, HNO 3, HF, HCl, OCS, ClONO 2, HCN, CH 3Cl, CF 4, CCl 2F 2, CCl 3F, COF 2, CHF 2Cl, and SF 6. Due to the complete lack of close spatiotemporal coincidences between the ACE occultations and the MkIV balloon flights, we used potential temperatures and equivalent latitudes from analyzed meteorological fields to find comparable ACE and MkIV profiles. The results show excellent agreement for CH 4, N 2O, and other long-lived gases but slightly poorer agreement for shorter-lived species like CO, O 3, and HCN. For example, in the upper troposphere (∼400-650 K), maximum differences between MkIV and ACE are 2.4% for CH 4, 1.7% for N 2O, -12.4% for CO, -15.9% for O 3, and -5.6% for HCN. In the lower stratosphere (∼650-900 K), maximum MkIV-ACE differences are 7.6% for CH 4, 14.1% for N 2O, 7.3% for CO, -9.2% for O 3, and 31.5% for HCN. Apart from a small vertical misregistration problem, the overall agreement between MkIV and ACE is very good. Copyright 2011 by the American Geophysical Union.

UOW Authors


  •   Velazco, Voltaire
  •   Toon, Geoffrey C. (external author)
  •   Blavier, Jean-Francois L. (external author)
  •   Kleinbohl, A (external author)
  •   Manney, G L. (external author)
  •   Daffer, W (external author)
  •   Bernath, Peter (external author)
  •   Walker, K A. (external author)
  •   Boone, C D. (external author)

Publication Date


  • 2011

Citation


  • velazco, V. A., Toon, G. C., Blavier, J. L., Kleinbohl, A., Manney, G. L., Daffer, W. H., Bernath, P. F., Walker, K. A. & Boone, C. (2011). Validation of the Atmospheric Chemistry Experiment by noncoincident MkIV balloon profiles. Journal of Geophysical Research, 116 (6), 1-17.

Scopus Eid


  • 2-s2.0-79953241644

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=8636&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/5293

Has Global Citation Frequency


Number Of Pages


  • 16

Start Page


  • 1

End Page


  • 17

Volume


  • 116

Issue


  • 6