Comparison of model estimates of the effects of aviation emissions on atmospheric ozone and methane

Seth C. Olsen, Guy P. Brasseur, Donald J. Wuebbles, Steven R.H. Barrett, Hongyan Dang, Sebastian D. Eastham, Mark Z. Jacobson, Arezoo Khodayari, Henry Selkirk, Andrei Sokolov, Nadine Unger

Research output: Contribution to journalArticlepeer-review

Abstract

One of the significant uncertainties in understanding the effects of aviation on climate is the effects of aviation emissions on ozone and atmospheric chemistry. In this study the effects of aviation emissions on atmospheric ozone for 2006 and two projections for 2050 are compared among seven models. The models range in complexity from a two-dimensional coupled model to three-dimensional offline and fully coupled three-dimensional chemistry-climate models. This study is the first step in a critical assessment and comparison among these model results. Changes in tropospheric O3 burdens range from 2.3 Tg-O3/Tg-N to 3.0 Tg-O3/Tg-N, ozone radiative forcings range from 6 to 37 mW/m2, and methane radiative forcings range from -8.3 to -12.5 mW/m2 for the 2006 aviation emissions. As a group, the chemistry transport models tend to have similar responses while the fully coupled models tend to separate from this group and do not show similar responses to each other.

Original languageEnglish (US)
Pages (from-to)6004-6009
Number of pages6
JournalGeophysical Research Letters
Volume40
Issue number22
DOIs
StatePublished - Nov 28 2013

Keywords

  • aviation
  • climate
  • radiative forcing

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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