Publication Abstracts

Baublitz et al. 2020

Baublitz, C.B., A.M. Fiore, O.E. Clifton, J. Mao, J. Li, G. Correa, D. Westervelt, L.W. Horowitz, F. Paulot, and A.P. Williams, 2020: Sensitivity of tropospheric ozone over the Southeast USA to dry deposition. Geophys. Res. Lett., 47, no. 7, e2020GL087158, doi:10.1029/2020GL087158.

Dry deposition (DD) is a major loss process for tropospheric ozone and some reactive nitrogen and carbon precursors. We investigate the response of summertime ozone and its production chemistry over the Southeast United States (USA) to variability in this sink. Turning off DD of oxidized nitrogen, ozone, or all species over the USA in the GFDL AM3 model increases regional mean surface ozone by 5, 18 or 25 ppb, respectively. Additional sensitivity simulations demonstrate that, assuming linearity, surface ozone has a similar sensitivity to ozone DD as to NOx emissions. Trends in ozone production efficiency derived from observed relationships between ozone and precursor oxidation products may not solely reflect precursor emission changes if ozone DD varies (e.g. with meteorology). We conclude that DD variability merits consideration when interpreting observed ozone trends. Quantifying the impact of changes in sinks versus sources will require long-term DD measurements across the region of interest.

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BibTeX Citation

  author={Baublitz, C. B. and Fiore, A. M. and Clifton, O. E. and Mao, J. and Li, J. and Correa, G. and Westervelt, D. and Horowitz, L. W. and Paulot, F. and Williams, A. P.},
  title={Sensitivity of tropospheric ozone over the Southeast USA to dry deposition},
  journal={Geophysical Research Letters},

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RIS Citation

ID  - ba04600m
AU  - Baublitz, C. B.
AU  - Fiore, A. M.
AU  - Clifton, O. E.
AU  - Mao, J.
AU  - Li, J.
AU  - Correa, G.
AU  - Westervelt, D.
AU  - Horowitz, L. W.
AU  - Paulot, F.
AU  - Williams, A. P.
PY  - 2020
TI  - Sensitivity of tropospheric ozone over the Southeast USA to dry deposition
JA  - Geophys. Res. Lett.
JO  - Geophysical Research Letters
VL  - 47
IS  - 7
SP  - e2020GL087158
DO  - 10.1029/2020GL087158
ER  -

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