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Design for the last millenium run
You will find on this page information about the experiment design for the PMIP4 Last Milllenium experiment.
Please make sure to read the Associated publication before setting up your experiments or using the output data, and read any how-to sections associated with specific boundary conditions.
Get in touch with the following people if you have questions:
| Johann Jungclaus | Scientific questions |
| Jean-Yves Peterschmitt | Technical questions or missing data |
Associated publication
Jungclaus et al, submitted
Specifications
| PMIP4-CMIP6 specifications | |
|---|---|
| PMIP4-CMIP6 name | past1000 |
| Astronomical parameters | Time varying, following Berger 1978 and Schmidt et al., 2011 Use the table provided by Gavin Schmidt for PMIP3 |
| Trace gases | CO2, N2O, CH4 = time varying, Meinshausen et al., CMIP6 GMD special issue The complete dataset with latitudinally and monthly resolved data in NetCDF format is available via https://pcmdi.llnl.gov/search/input4mips/. Additional data formats, of the same data are also available via http://www.climatecollege.unimelb.edu.au/cmip6 CFC = 0 O3 = for models without interactive ozone chemistry, we suggest that O3 modulation is derived in a similar way from the modulation of the UV part of the solar spectrum as in the historical simulations (c.f. Matthes et al., CMIP6 GMD special issue 2016) |
| Solar activity | Time varying |
| Ice sheets | Same as in CMIP6 piControl |
| Topography and coastlines | Same as in CMIP6 piControl |
| Volcanic activity | Time varying sulphur injections eVolv2K (Sigl et al., 2015, Toohey and Sigl, in prep.) for models with interactive aerosol chemistry. For models that need aerosol optical properties as forcing, these are provided by the EVA module (Toohey et al., 2016) |
| Aerosols | Same background aerosols as in CMIP6 PiControl |
| Vegetation | The methodology to represent vegetation should be the same as for the CMIP6 piControl simulation |
| Land Use Forcing | Land-Use/Land-cover change forcing is the same as for the historical CMIP6 forcing, which has been extended to cover 850 CE to 2015 CE. The CMIP6 Land Use Harmonization data set has been developed as part of the Land Use Model Intercomparison Project LUMIP (Lawrence at al) and can be downloaded from the LUMIP web site |