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|Title:||The Interactive Stratospheric Aerosol Model Intercomparison Project (ISA-MIP): motivation and experimental design|
|Authors:||TIMMRECK CLAUDIA; MANN GRAHAM W.; AQUILA VALENTINA; HOMMEL RENE; LEE LINDSAY; SCHMIDT ANJA; BRUEHL CHRISTOPH; CARN SIMON; CHIN MIAN; DHOMSE SANDIP; DIEHL THOMAS; ENGLISH JASON; MILLS MICHAEL J.; NEELY RYAN; SHENG JIANXIONG; TOOHEY MATTHEW; WEISENSTEIN DEBRA|
|Citation:||GEOSCIENTIFIC MODEL DEVELOPMENT vol. 11 no. 7 p. 2581-2608|
|Publisher:||COPERNICUS GESELLSCHAFT MBH|
|Type:||Articles in periodicals and books|
|Abstract:||The Stratospheric Sulfur and its Role in Climate (SSiRC) Interactive Stratospheric Aerosol Model Intercomparison Project (ISA-MIP) explores uncertainties in the processes that connect volcanic emission of sulfur gas species and the radiative forcing associated with the resulting enhancement of the stratospheric aerosol layer. The central aim of ISA-MIP is to constrain and improve interactive stratospheric aerosol models and reduce uncertainties in the stratospheric aerosol forcing by comparing results of standardized model experiments with a range of observations. In this paper we present four co-ordinated inter-model experiments designed to investigate key processes which influence the formation and temporal development of stratospheric aerosol in different time periods of the observational record. The Background (BG) experiment will focus on microphysics and transport processes under volcanically quiescent conditions, when the stratospheric aerosol is controlled by the transport of aerosols and their precursors from the troposphere to the stratosphere. The Transient Aerosol Record (TAR) experiment will explore the role of small- to moderate-magnitude volcanic eruptions, anthropogenic sulfur emissions, and transport processes over the period 1998–2012 and their role in the warming hiatus. Two further experiments will investigate the stratospheric sulfate aerosol evolution after major volcanic eruptions. The Historical Eruptions SO2 Emission Assessment (HErSEA) experiment will focus on the uncertainty in the initial emission of recent large-magnitude volcanic eruptions, while the Pinatubo Emulation in Multiple models (PoEMS) experiment will provide a comprehensive uncertainty analysis of the radiative forcing from the 1991 Mt Pinatubo eruption.|
|JRC Directorate:||Sustainable Resources|
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