Ponater, Michael and Dietmüller, Simone and Rieger, Vanessa Simone and Stecher, Laura and Koopmans, Sabrina (2019) Analysis of radiative feedbacks in model simulations including interactive chemisty. 27. IUGG General Assembly, 8-18 Jul 2019, Montreal, Canada.
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Abstract
Including interactive atmospheric chemistry in climate change simulations may have a significant impact on the climate sensitivity. In CO2-driven simulations the climate sensitivity has been found to be reduced. The reason is a negative feedback from stratospheric ozone (absent from models without chemistry), which is amplified by reducing the positive feedback of stratospheric water vapor. A complete feedback analysis reveals that other physical feedbacks, in particular the cloud radiative feedback, are also modified by the presence of chemical interactions. This feature may be more pronounced in climate change simulations driven by non-CO2 radiative forcings. In such cases the change of conventional (physical) radiative feedbacks could even overcompensate the direct feedback effect from changes of interactive chemical tracers. It will also be emphasized that further methodological developments to radiative feedback analysis are called for, in order to interpret the feedbacks arising in chemistry-climate models in a proper cause and effect sense.
Item URL in elib: | https://elib.dlr.de/128551/ | ||||||||||||||||||
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Document Type: | Conference or Workshop Item (Poster) | ||||||||||||||||||
Title: | Analysis of radiative feedbacks in model simulations including interactive chemisty | ||||||||||||||||||
Authors: |
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Date: | 2019 | ||||||||||||||||||
Refereed publication: | No | ||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||
Status: | Published | ||||||||||||||||||
Keywords: | climate sensitivity, chemical feedback, ozone, stratospheric water vapour | ||||||||||||||||||
Event Title: | 27. IUGG General Assembly | ||||||||||||||||||
Event Location: | Montreal, Canada | ||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||
Event Dates: | 8-18 Jul 2019 | ||||||||||||||||||
Organizer: | International Union of Geodesy and Geophysics | ||||||||||||||||||
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 - Transport und Klima | ||||||||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||||||||
Institutes and Institutions: | Institute of Atmospheric Physics > Earth System Modelling | ||||||||||||||||||
Deposited By: | Ponater, Dr.rer.nat. Michael | ||||||||||||||||||
Deposited On: | 23 Jul 2019 11:02 | ||||||||||||||||||
Last Modified: | 31 Jul 2019 20:26 |
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