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Quantified estimates of total GWPs for greenhouse gases taking into account tropospheric chemistry

Description: The purpose of this report is to give interim account of the progress being made at Lawrence Livermore National Laboratory (LLNL) in developing an improved capability for assessing the direct and indirect effects on Global Warming Potentials. Much of our current efforts are being devoted to improving the capability for modeling of global tropospheric processes in our state-of-the-art zonally-averaged chemical-radiative-transport model of the troposphere and stratosphere. These efforts are in pr… more
Date: November 1993
Creator: Wuebbles, D. J.; Tamaresis, J. S. & Patten, K. O.
Partner: UNT Libraries Government Documents Department
open access

A condensed global photochemical mechanism for two-dimensional atmospheric models

Description: A condensed chemical mechanism that represents the reactions of organic compounds in the atmosphere is developed and tested using a one-dimensional model. Due to the differences between the full and condensed mechanisms, the reduced version cannot be considered an accurate predictor of globally important trace species concentrations. The condensed mechanism must be improved before it can be used with confidence in two-dimensional models. Appendix contains both full and reduced mechanisms of pho… more
Date: January 1, 1991
Creator: Tamaresis, J.; Kinnison, D.E. & Wuebbles, D.J.
Partner: UNT Libraries Government Documents Department
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O{sub 3} and stratospheric H{sub 2}O radiative forcing resulting from a supersonic jet transport emission scenario

Description: The tropospheric radiative forcing has been calculated for ozone and water vapor perturbations caused by a realistic High Speed Civil Transport (HSCT) aircraft emission scenario. Atmospheric profiles of water vapor and ozone were obtained using the LLNL 2-D chemical-radiative-transport model (CRT) of the global troposphere and stratosphere. IR radiative forcing calculations were made with the LLNL correlated k-distribution radiative transfer model. UV-Visible-Near IR radiative forcing calculati… more
Date: January 1, 1996
Creator: Grossman, A.S.; Kinnison, D.E.; Penner, J.E.; Grant, K.E.; Tamaresis, J. & Connell, P.S.
Partner: UNT Libraries Government Documents Department
open access

Indirect global warming effects of ozone and stratospheric water vapor induced by surface methane emission

Description: Methane has indirect effects on climate due to chemical interactions as well as direct radiative forcing effects as a greenhouse gas. We have calculated the indirect, time-varying tropospheric radiative forcing and GWP of O{sub 3} and stratospheric H{sub 2}O due to an impulse of CH{sub 4}. This impulse, applied to the lowest layer of the atmosphere, is the increase of the atmospheric mass of CH{sub 4} resulting from a 25 percent steady state increase in the current emissions as a function of la… more
Date: July 1, 1994
Creator: Wuebbles, D. J.; Grossman, A. S.; Tamaresis, J. S.; Patten, K. O. Jr.; Jain, A. & Grant, K. A.
Partner: UNT Libraries Government Documents Department
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