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Greenhouse Gas and Ozone Radiative Forcing for the RCP8.5 Scenario with the EMAC Chemistry-Climate Model

Gellhorn, Catrin and Langematz, Ulrike and Meul, Stefanie and Ponater, Michael and Kubin, Anne and Abalichin, Janna (2015) Greenhouse Gas and Ozone Radiative Forcing for the RCP8.5 Scenario with the EMAC Chemistry-Climate Model. 26th IUGG general assembly 2015, 2015-06-22 - 2015-07-02, Prag, Czech Republic.

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Official URL: https://www.czech-in.org/cm/IUGG/CM.NET.WebUI/CM.NET.WEBUI.scpr/SCPRfunctiondetail.aspx?confID=05000000-0000-0000-0000-000000000053&sesID=05000000-0000-0000-0000-000000003377&absID=07000000-0000-0000-0000-000000022942


One metric to show the impact of changes in the human and natural emissions of climate active agents on the earth's climate system is the concept of radiative forcing (RF). It quantifies the energy imbalance that occurs when an imposed perturbation, for instance by a change in the mixing ratio of a greenhouse gas (GHG), takes place. There are several ways to calculate the radiative forcing, which differ in the included feedback processes. The instantaneous RF is calculated with fixed atmospheric background conditions to get the net change in the radiative flux ”instantaneously”, while the adjusted RF allows the temperature profile to adjust to a new equilibrium in the stratosphere, with the tropospheric temperature profile remaining unchanged. The goal of this study is to derive the RF of the troposphere due to projected future changes of ozone and GHGs by applying the new sub-model RAD in the ECHAM/MESSy Atmospheric Chemistry (EMAC) model. The instantaneous and adjusted RFs for the GHGs as well as for ozone (tropospheric and stratospheric changes separated) have been calculated. The analyses are based on the reference period 1865 (10 years from a time slice simulation) and the RF is derived for every decade from 1965 (1960–1969) until 2095 (2090–2099). The ozone and GHG concentrations, needed as input for the RF calculations, are taken from a transient simulations of the EMAC chemistry-climate model. The simulations extend from 1960 to 2100, and include forcings by GHGs following the specifications of the RCP8.5 scenario, and by ozone depleting substances following the specification of the adjusted A1 scenario. Sea- surface temperatures and sea-ice concentrations were prescribed from the Max Planck Institute ocean model (MPIOM).

Item URL in elib:https://elib.dlr.de/97139/
Document Type:Conference or Workshop Item (Speech)
Title:Greenhouse Gas and Ozone Radiative Forcing for the RCP8.5 Scenario with the EMAC Chemistry-Climate Model
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Gellhorn, CatrinFU Berlin MeteorologieUNSPECIFIEDUNSPECIFIED
Langematz, UlrikeFU Berlin MeteorologieUNSPECIFIEDUNSPECIFIED
Meul, StefanieInst. für Meteorologie, Freie Univ. Berlin, GermanyUNSPECIFIEDUNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:radiative forcing, ozone, greenhouse gas
Event Title:26th IUGG general assembly 2015
Event Location:Prag, Czech Republic
Event Type:international Conference
Event Start Date:22 June 2015
Event End Date:2 July 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Atmospheric and climate research
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics
Institute of Atmospheric Physics > Earth System Modelling
Deposited By: Ponater, Dr.rer.nat. Michael
Deposited On:09 Jul 2015 16:51
Last Modified:12 Jun 2024 13:48

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