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  MACv2-SP: a parameterization of anthropogenic aerosol optical properties and an associated Twomey effect for use in CMIP6

Stevens, B., Fiedler, S., Kinne, S., Peters, K., Rast, S., Müsse, J., et al. (2017). MACv2-SP: a parameterization of anthropogenic aerosol optical properties and an associated Twomey effect for use in CMIP6. Geoscientific Model Development, 10, 433-452. doi:10.5194/gmd-10-433-2017.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-077D-D Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-F890-6
Genre: Journal Article

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 Creators:
Stevens, Bjorn1, Author              
Fiedler, Stephanie1, Author              
Kinne, Stefan2, Author              
Peters, Karsten2, Author              
Rast, Sebastian3, Author              
Müsse, Jobst2, Author
Smith, Steven J., Author
Mauritsen, Thorsten4, Author              
Affiliations:
1Director’s Research Group AES, The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society, ou_913570              
2Observations and Process Studies, The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society, ou_913575              
3Middle and Upper Atmosphere, The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society, ou_913574              
4Climate Dynamics, The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society, ou_913568              

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 Abstract: A simple plume implementation of the second version (v2) of the Max Planck Institute Aerosol Climatology, MACv2-SP, is described. MACv2-SP provides a prescription of anthropogenic aerosol optical properties and an associated Twomey effect for the harmonized use in climate modelling studies. It has been designed to be easy to implement, change and use, and thereby enable studies exploring the climatic effects of different plausible aerosol distributions and their impact on clouds.MACv2-SP is formulated in terms of nine spatial plumes associated with different major anthropogenic source regions. The shape of the plumes is fit to the Max Planck Institute Aerosol Climatology, version 2, which is based on present day (2005) observations. Decadal variations in the amplitude of the plumes over the historical (post 1850) period is derived by scaling the plumes with associated national emission sources of SO2 and NH3. Two types of plumes are considered: one predominantly associated with biomass burning the other with industrial emissions. The two types of plumes differ in the prescription of their annual cycle and in their optical properties, thereby implicitly accounting for different contributions of absorbing aerosol to the different plumes. A Twomey effect for each plume is prescribed as a change in the host model’s background cloud droplet population density using relationships derived from satellite data. Experiments using the simple plume model are performed with the Max Planck Institute Earth System Model. The instantaneous and effective aerosol radiative forcings is estimated to be

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Language(s): eng - English
 Dates: 2016-07-182017-012017-02-012017-02-01
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.5194/gmd-10-433-2017
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Title: Geoscientific Model Development
  Abbreviation : GMD
Source Genre: Journal
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Publ. Info: Göttingen : Copernicus Publ.
Pages: - Volume / Issue: 10 Sequence Number: - Start / End Page: 433 - 452 Identifier: Other: 1991-959X
CoNE: /journals/resource/1991-959X