Actions for Radiative forcing for changes in tropospheric O{sub 3} [electronic resource].

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Radiative forcing for changes in tropospheric O{sub 3} [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1994.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
7 pages : digital, PDF file
Additional Creators
Lawrence Livermore Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
We have evaluated the radiative forcing for assumed changes in tropospheric O₃ in the 500-1650 cm{sup −1} wavenumber range. The radiative forcing calculations were performed as a function of latitude as well as for a globally and seasonally averaged model atmosphere, both in a clear sky approximation and in a model containing a representative cloud distribution. The scenarios involved radiative forcing calculations for O₃ at normal atmospheric abundance and at a tropospheric abundance depleted by 25 ppbv, at each altitude, for all northern hemisphere latitudes. Normal abundances of H₂O, CO₂, CH₄, and N₂O were included in the calculations. The IR radiative forcing was calculated using a correlated k-distribution radiative transfer model. The tropospheric radiative forcing values are compared to the IPCC formulae for ozone tropospheric forcing as well as other published values to determine the validity of the correlated k-distribution approach to the radiative forcing calculations. The results for the global average atmosphere show agreement with previous results to the order of 10 percent. We conclude that the O₃ forcing is linear in the background abundance and that the radiative forcing for ozone for the globally averaged atmosphere and the latitude averaged radiative forcing in the clear sky approximation are in agreement to within 10 percent. For the case of an atmosphere in which the tropospheric ozone has been depleted by 25 ppbv at all altitudes in the northern hemisphere, the mid latitude zone contributes ∼50 percent of the forcing, tropic zone contributes ∼37 percent of the forcing and the polar zone contributes ∼13 percent of the total forcing.
Report Numbers
E 1.99:ucrl-id--118063
ucrl-id--118063
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
06/01/1994.
"ucrl-id--118063"
"DE94019017"
Wuebbles, D.J.; Grant, K.E.; Grossman, A.S.
Type of Report and Period Covered Note
Topical; 06/01/1994 - 06/01/1994
Funding Information
W-7405-ENG-48
View MARC record | catkey: 14140260