We have used the SLIMCAT three‐dimensional chemical transport model together with observations from the Stratospheric Aerosol and Gas Experiment (SAGE III) Ozone Loss and Validation Experiment (SOLVE) and the Third European Stratospheric Experiment on Ozone (THESEO 2000) to quantify the effect of denitrification on Arctic ozone loss. We have used two different denitrification schemes in the model...
Publications
Davies, S., M. P. Chipperfield, K. S. Carslaw, B.-M. Sinnhuber, J. G. Anderson, R. M. Stimpfle, D. M. Wilmouth, D. W. Fahey, P. J. Popp, E. C. Richard, P. von der Gathen, H. Jost, and C. R. Webster, Modeling the effect of denitrification on Arctic ozone depletion during winter 1999/2000. J. Geophys. Res., 108(D5), 8322, 2002, doi:10.1029/2001JD000445.
Hanisco, T. F., J. B. Smith, R. M. Stimpfle, D. M. Wilmouth, K. K. Perkins, J. R. Spackman, J. G. Anderson, D. Baumgardner, B. Gandrud, C. R. Webster, S. Dhaniyala, K. A. McKinney, and T. P. Bui, Quantifying the rate of heterogeneous processing in the Arctic polar vortex with in situ observations of OH. J. Geophys. Res., 107(D20), 8278, 2002, doi:10.1029/2001JD000425.
We present simultaneous in situ observations of OH, HO2, ClONO2, HCl, and particle surface area inside a polar stratospheric cloud undergoing rapid heterogeneous processing. A steady‐state analysis constrained by in situ observations is used to show that concentrations of OH calculated during a processing event are extremely sensitive to the assumptions regarding aerosol composition and...
Hanisco, T. F., J. B. Smith, R. M. Stimpfle, D. M. Wilmouth, J. G. Anderson, E. C. Richard, and T. P. Bui, In situ observations of HO2and OH obtained on the NASA ER-2 in the high-ClO conditions of the 1999/2000 Arctic polar vortex. J. Geophys. Res., 107(D20), 8283, 2002, doi:10.1029/2001JD001024.
Extensive observations of OH and HO2 obtained aboard the NASA ER‐2 inside the Arctic polar vortex during the SAGE III Ozone loss and Validation Experiment (SOLVE) provide the opportunity to identify and test interferences during the measurement of HO2 in the presence of high concentrations of ClO. In‐flight calibrations are consistent with small interferences from CH3O2 (8%) and...
Wilmouth, D. M., T. F. Hanisco, N. M. Donahue, and J. G. Anderson, Fourier Transform ultraviolet spectroscopy of the A 2∏3/2 ← X 2∏3/2transition of BrO. J. Phys. Chem. A, 103, 8935–8945, 1999.
The first spectra of the A 2Π3/2 ← X 2Π3/2 electronic transition of BrO using Fourier transform ultraviolet spectroscopy are obtained. Broadband vibrational spectra acquired at 298 ± 2 K and 228 ± 5 K, as well as high-resolution rotational spectra of the A ← X 7,0 and 12,0 vibrational bands are presented. Wavenumber positions for the spectra are obtained with high accuracy,...
Anderson, J. G., H. J. Grassl, R. E. Shetter, and J. J. Margitan, Stratospheric free chlorine measured by balloon-borne in situ resonance fluorescence, J. Geophys. Res. 85, 2869–87, 1980. [doi:10.1029/JC085iC05p02869]
Eight balloon-borne in situ measurements of ClO in the stratosphere are presented. Six of the observations, which were carried out close to local noon, are compared with recent model calculations at the appropriate latitude (32°N), altitude (25–45 km), and solar zenith angle interval (10° < χ < 55°). The ClO mixing ratio by volume observed on four flights between the autumnal equinox and...