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pmip3:design:lm:final [2010/08/02 14:35] jypeter Change, and added links for all doi references |
pmip3:design:lm:final [2010/10/06 16:28] jypeter Added link to "LM" GMD paper |
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- | //Go to =>// [ [[pmip3:design:pi:final|PI]] ] - [ [[pmip3:design:6k:final|6ka]] ] - [ [[pmip3:design:21k:final|21ka]] ] - [ **LM** ] | + | //Go to =>// [ [[pmip3:design:pi:final|PI]] ] - [ [[pmip3:design:6k:final|6ka]] ] - [ [[pmip3:design:21k:final|21ka]] ] - [ **LM** ] & Non-CMIP5 exps: [ [[pmip3:design:li:final|LI]] ] |
====== Last Millennium Experimental Design ====== | ====== Last Millennium Experimental Design ====== | ||
- | The basic principle is that we should strive to include all relevant transient forcings over this period if the functionality exists in the model, noting that conformability with the CMIP5 controls and 20th Century transient is crucial. | + | The basic principle is that we should strive to include all relevant transient forcings over this period if the functionality exists in the model, noting that conformability with the CMIP5 controls and 20th Century transient is crucial. |
+ | <note important>Please check also the [[http://www.geosci-model-dev-discuss.net/3/1549/2010/gmdd-3-1549-2010.html|Climate forcing reconstructions for use in PMIP simulations of the last millennium (v1.0)]] paper on the GMD (Geoscientific Model Development) web site.</note> | ||
===== Boundary conditions ===== | ===== Boundary conditions ===== | ||
==== Summary of Last Millennium boundary conditions ==== | ==== Summary of Last Millennium boundary conditions ==== | ||
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The stratospheric aerosol loadings (in units of Tg) provided in the IVI2 data set may be converted into aerosol optical depth (AOD) by dividing the loadings by 150 Tg (Stothers, 1984). The AOD time series can then be used to calculate the corresponding radiative forcing (in units of Wm-2) by multiplying it by (-20) (Wigley et al., 2005). The conversion to AOD is valid for aerosols with effective radius in the visible spectral range. | The stratospheric aerosol loadings (in units of Tg) provided in the IVI2 data set may be converted into aerosol optical depth (AOD) by dividing the loadings by 150 Tg (Stothers, 1984). The AOD time series can then be used to calculate the corresponding radiative forcing (in units of Wm-2) by multiplying it by (-20) (Wigley et al., 2005). The conversion to AOD is valid for aerosols with effective radius in the visible spectral range. | ||
- | Further explanation is provided here : {{:pmip3:design:lm:ivi2aodtsiconversion.pdf|}} | + | Note: the ''IVI2TotalLoading501-2000.txt'' dataset file has a misleading name and gives the //Total Injection//, **not** //Loading//. |
Gao, C., A. Robock, and C. Ammann: Volcanic forcing of climate over the last 1500 years: An improved ice-core based index for climate models. J. Geophys. Res., 113, D2311, doi:[[http://dx.doi.org/10.1029/2008JD010239|10.1029/2008JD010239]] (2008). | Gao, C., A. Robock, and C. Ammann: Volcanic forcing of climate over the last 1500 years: An improved ice-core based index for climate models. J. Geophys. Res., 113, D2311, doi:[[http://dx.doi.org/10.1029/2008JD010239|10.1029/2008JD010239]] (2008). | ||
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===== Links ===== | ===== Links ===== | ||
+ | |||
+ | * [[http://www.geosci-model-dev-discuss.net/3/1549/2010/gmdd-3-1549-2010.html|Climate forcing reconstructions for use in PMIP simulations of the last millennium (v1.0)]] paper | ||
* PCMIP Project (**P**alaeo**C**arbon **M**odelling **I**ntercomparison **P**roject)\\ http://www.bridge.bris.ac.uk/projects/pcmip | * PCMIP Project (**P**alaeo**C**arbon **M**odelling **I**ntercomparison **P**roject)\\ http://www.bridge.bris.ac.uk/projects/pcmip |