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Ozone radiative feedback in global warming simulations with CO2 and non-CO2 forcing

Ponater, Michael and Dietmüller, Simone and Rieger, Vanessa (2015) Ozone radiative feedback in global warming simulations with CO2 and non-CO2 forcing. AGU Fall Meeting 2015, 14.-18. Dez. 2015, San Francisco, CA, USA.

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Abstract

It has been found that ozone radiative feedback acts to reduce the climate sensitivity in global warming simulations including interactive atmospheric chemistry, if the radiative forcing origins from CO2 increase. The effect can be traced to a negative feedback from stratospheric ozone changes and it is amplified by a reduced positive feedback from stratospheric water vapor. These findings cannot be simply transferred to simulations in which the warming is driven by a non-CO2 radiative forcing. Using a perturbation of surface NOx and CO emissions as an example, it can be demonstrated that a tropospheric ozone feedback may have significant impacts on physical feedbacks. These interactions can act to an extent that the effect of a negative ozone feedback can be reversed by changes in other feedbacks, thus increasing the climate sensitivity instead of reducing it. We also address some conceptual issues showing up as chemical feedbacks are added to set of physical feedbacks in simulation with interactive chemistry.

Item URL in elib:https://elib.dlr.de/100742/
Document Type:Conference or Workshop Item (Poster)
Title:Ozone radiative feedback in global warming simulations with CO2 and non-CO2 forcing
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ponater, MichaelDLR, IPAUNSPECIFIED
Dietmüller, SimoneDLR, IPAUNSPECIFIED
Rieger, VanessaDLR, IPAUNSPECIFIED
Date:2015
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:radiative forcing, radiative feedback, climate sensitivity
Event Title:AGU Fall Meeting 2015
Event Location:San Francisco, CA, USA
Event Type:international Conference
Event Dates:14.-18. Dez. 2015
Organizer:American Geophysical Union
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Verkehrsentwicklung und Umwelt II (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Earth System Modelling
Institute of Atmospheric Physics
Deposited By: Ponater, Dr.rer.nat. Michael
Deposited On:10 Dec 2015 09:26
Last Modified:31 Jul 2019 19:57

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