A new Geoengineering Model Intercomparison Project (GeoMIP) experiment designed for climate and chemistry models
A new Geoengineering Model Intercomparison Project (GeoMIP) experiment "G4 specified stratospheric aerosols" (short name: G4SSA) is proposed to investigate the impact of stratospheric aerosol geoengineering on atmosphere, chemistry, dynamics, climate, and the environment. In contrast to th...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2015-01-01
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| Series: | Geoscientific Model Development |
| Online Access: | http://www.geosci-model-dev.net/8/43/2015/gmd-8-43-2015.pdf |
| _version_ | 1818202355133317120 |
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| author | S. Tilmes M. J. Mills U. Niemeier H. Schmidt A. Robock B. Kravitz J.-F. Lamarque G. Pitari J. M. English |
| author_facet | S. Tilmes M. J. Mills U. Niemeier H. Schmidt A. Robock B. Kravitz J.-F. Lamarque G. Pitari J. M. English |
| author_sort | S. Tilmes |
| collection | DOAJ |
| description | A new Geoengineering Model Intercomparison Project (GeoMIP) experiment "G4
specified stratospheric aerosols" (short name: G4SSA) is proposed to
investigate the impact of stratospheric aerosol geoengineering on atmosphere,
chemistry, dynamics, climate, and the environment. In contrast to the earlier
G4 GeoMIP experiment, which requires an emission of sulfur dioxide
(SO<sub>2</sub>) into the model, a prescribed aerosol forcing file is provided
to the community, to be consistently applied to future model experiments
between 2020 and 2100. This stratospheric aerosol distribution, with a total
burden of about 2 Tg S has been derived using the ECHAM5-HAM microphysical
model, based on a continuous annual tropical emission of
8 Tg SO<sub>2</sub> yr<sup>−1</sup>. A ramp-up of geoengineering in 2020 and a
ramp-down in 2070 over a period of 2 years are included in the
distribution, while a background aerosol burden should be used for the last 3
decades of the experiment. The performance of this experiment using climate
and chemistry models in a multi-model comparison framework will allow us to
better understand the impact of geoengineering and its abrupt termination
after 50 years in a changing environment. The zonal and monthly mean
stratospheric aerosol input data set is available at
<a href="https://www2.acd.ucar.edu/gcm/geomip-g4-specified-stratospheric-aerosol-data-set">https://www2.acd.ucar.edu/gcm/geomip-g4-specified-stratospheric-aerosol-data-set</a>. |
| first_indexed | 2024-12-12T03:08:08Z |
| format | Article |
| id | doaj.art-0fe0bce31fb248d5b683c0b1837f9926 |
| institution | Directory Open Access Journal |
| issn | 1991-959X 1991-9603 |
| language | English |
| last_indexed | 2024-12-12T03:08:08Z |
| publishDate | 2015-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Geoscientific Model Development |
| spelling | doaj.art-0fe0bce31fb248d5b683c0b1837f99262022-12-22T00:40:28ZengCopernicus PublicationsGeoscientific Model Development1991-959X1991-96032015-01-0181434910.5194/gmd-8-43-2015A new Geoengineering Model Intercomparison Project (GeoMIP) experiment designed for climate and chemistry modelsS. Tilmes0M. J. Mills1U. Niemeier2H. Schmidt3A. Robock4B. Kravitz5J.-F. Lamarque6G. Pitari7J. M. English8National Center for Atmospheric Research, Boulder, Colorado, USANational Center for Atmospheric Research, Boulder, Colorado, USAMax Planck Institute for Meteorology, Hamburg, GermanyMax Planck Institute for Meteorology, Hamburg, GermanyDepartment of Environmental Sciences, Rutgers University, New Brunswick, New Jersey, USAPacific Northwest National Laboratory, Richland, Washington, USANational Center for Atmospheric Research, Boulder, Colorado, USADepartment of Physical and Chemical Sciences, Università L'Aquila, 67010 Coppito, L'Aquila, ItalyUniversity of Colorado at Boulder, Boulder, Colorado, USAA new Geoengineering Model Intercomparison Project (GeoMIP) experiment "G4 specified stratospheric aerosols" (short name: G4SSA) is proposed to investigate the impact of stratospheric aerosol geoengineering on atmosphere, chemistry, dynamics, climate, and the environment. In contrast to the earlier G4 GeoMIP experiment, which requires an emission of sulfur dioxide (SO<sub>2</sub>) into the model, a prescribed aerosol forcing file is provided to the community, to be consistently applied to future model experiments between 2020 and 2100. This stratospheric aerosol distribution, with a total burden of about 2 Tg S has been derived using the ECHAM5-HAM microphysical model, based on a continuous annual tropical emission of 8 Tg SO<sub>2</sub> yr<sup>−1</sup>. A ramp-up of geoengineering in 2020 and a ramp-down in 2070 over a period of 2 years are included in the distribution, while a background aerosol burden should be used for the last 3 decades of the experiment. The performance of this experiment using climate and chemistry models in a multi-model comparison framework will allow us to better understand the impact of geoengineering and its abrupt termination after 50 years in a changing environment. The zonal and monthly mean stratospheric aerosol input data set is available at <a href="https://www2.acd.ucar.edu/gcm/geomip-g4-specified-stratospheric-aerosol-data-set">https://www2.acd.ucar.edu/gcm/geomip-g4-specified-stratospheric-aerosol-data-set</a>.http://www.geosci-model-dev.net/8/43/2015/gmd-8-43-2015.pdf |
| spellingShingle | S. Tilmes M. J. Mills U. Niemeier H. Schmidt A. Robock B. Kravitz J.-F. Lamarque G. Pitari J. M. English A new Geoengineering Model Intercomparison Project (GeoMIP) experiment designed for climate and chemistry models Geoscientific Model Development |
| title | A new Geoengineering Model Intercomparison Project (GeoMIP) experiment designed for climate and chemistry models |
| title_full | A new Geoengineering Model Intercomparison Project (GeoMIP) experiment designed for climate and chemistry models |
| title_fullStr | A new Geoengineering Model Intercomparison Project (GeoMIP) experiment designed for climate and chemistry models |
| title_full_unstemmed | A new Geoengineering Model Intercomparison Project (GeoMIP) experiment designed for climate and chemistry models |
| title_short | A new Geoengineering Model Intercomparison Project (GeoMIP) experiment designed for climate and chemistry models |
| title_sort | new geoengineering model intercomparison project geomip experiment designed for climate and chemistry models |
| url | http://www.geosci-model-dev.net/8/43/2015/gmd-8-43-2015.pdf |
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