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exp_design:lig127 [2016/05/13 16:11]
pasb
exp_design:lig127 [2020/04/07 14:38] (current)
jypeter [Associated publication] Added link to supplement
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 ====== Design for the last Interglacial (at 127 ky BP) run====== ====== Design for the last Interglacial (at 127 ky BP) run======
  
-===== Associated publication =====+<WRAP info round center 60%> 
 +You will find on this page information about the experiment design for the PMIP4 [[.:​lig127|last Interglacial (at 127 ky BP)]] experiment.
  
-Otto-Bliesner et alin prep+Please make sure to read the [[#​Associated_publication|Associated publication]] before setting up your experiments or using the output dataand read any //how-to// sections associated with specific boundary conditions.
  
 +Get in touch with the following people if you have questions:
 +
 +
 +| [[ottobli@ucar.edu|Bette Otto-Bliesner]] | Scientific questions |
 +| [[Jean-Yves.Peterschmitt@lsce.ipsl.fr|Jean-Yves Peterschmitt]] | Technical questions or missing data|
 +</​WRAP>​
 +
 +===== Associated publication =====
 +
 +**The PMIP4 contribution to CMIP6 – Part 2: Two interglacials,​ scientific objective and experimental design for Holocene and Last Interglacial simulations**,​ Otto-Bliesner,​ B. L., Braconnot, P., Harrison, S. P., Lunt, D. J., Abe-Ouchi, A., Albani, S., Bartlein, P. J., Capron, E., Carlson, A. E., Dutton, A., Fischer, H., Goelzer, H., Govin, A., Haywood, A., Joos, F., LeGrande, A. N., Lipscomb, W. H., Lohmann, G., Mahowald, N., Nehrbass-Ahles,​ C., Pausata, F. S. R., Peterschmitt,​ J.-Y., Phipps, S. J., Renssen, H., and Zhang, Q., Geosci. Model Dev., 10, 3979-4003, [[https://​doi.org/​10.5194/​gmd-10-3979-2017|doi:​10.5194/​gmd-10-3979-2017]],​ 2017.\\ \\ [[https://​www.geosci-model-dev.net/​10/​3979/​2017/​gmd-10-3979-2017-supplement.zip|Supplement (Otto-Bliesner et al, GMD, 2017)]]
 ===== Specifications ===== ===== Specifications =====
  
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 | PMIP4-CMIP6 name | <wrap em>​lig127k</​wrap>​ | | PMIP4-CMIP6 name | <wrap em>​lig127k</​wrap>​ |
 | Astronomical parameters ​ | **eccentricity** = 0.039378 \\ **obliquity** = 24.04° \\  **perihelion-180°** = 275.41° ​ \\  **Date of vernal equinox** ​ :  March 21 at noon  |  ​ | Astronomical parameters ​ | **eccentricity** = 0.039378 \\ **obliquity** = 24.04° \\  **perihelion-180°** = 275.41° ​ \\  **Date of vernal equinox** ​ :  March 21 at noon  |  ​
-| Trace gases  | **CO<​sub>​2</​sub>​** = 287 ppm \\ **CH<​sub>​4</​sub>​** = 724 ppb \\ **N<​sub>​2</​sub>​O** = 262 ppb \\ **CFC** = 0 \\ **O<​sub>​3</​sub>​** = same as in CMIP6 piControl ​ |  +| Trace gases  | **CO<​sub>​2</​sub>​** = 275 ppm \\ **CH<​sub>​4</​sub>​** = 685 ppb \\ **N<​sub>​2</​sub>​O** = 255 ppb \\ **CFC** = 0 \\ **O<​sub>​3</​sub>​** = same as in CMIP6 piControl ​ |  
-| Solar activity | Same as in CMIP6 piControl ​ | +| Solar activity | Same as in CMIP6 piControl ​(TSI = 1360.747 W.m-2) ​ ​| ​
 | Ice sheets ​     | Same as in CMIP6 piControl ​ |  | Ice sheets ​     | Same as in CMIP6 piControl ​ | 
 | Topography and coastlines ​ | Same as in CMIP6 piControl ​ |  | Topography and coastlines ​ | Same as in CMIP6 piControl ​ | 
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 | Aerosols ​ | Modified sources, atmospheric concentrations or radiative forcing, depending on model complexity and model configuration used for DECK and historical experiments \\  cf. documenting papers: Otto-Bliesner et al, in prep and Kageyama et al, subm. \\ [[:​data:​aerosols|Access to data]]| ​ | Aerosols ​ | Modified sources, atmospheric concentrations or radiative forcing, depending on model complexity and model configuration used for DECK and historical experiments \\  cf. documenting papers: Otto-Bliesner et al, in prep and Kageyama et al, subm. \\ [[:​data:​aerosols|Access to data]]| ​
 | Vegetation ​    | Depending on model complexity and model configuration used for DECK and historical experiments:​ \\ Interactive vegetation **or** Interactive carbon cycle (LAI) **or** Prescribed to present-day values or lig127k values computed from off-line vegetation model \\ The methodology to represent vegetation should be the same as for the CMIP6 piControl simulation ​ \\  cf. documenting papers: Otto-Bliesner et al, in prep and Kageyama et al, subm. | | Vegetation ​    | Depending on model complexity and model configuration used for DECK and historical experiments:​ \\ Interactive vegetation **or** Interactive carbon cycle (LAI) **or** Prescribed to present-day values or lig127k values computed from off-line vegetation model \\ The methodology to represent vegetation should be the same as for the CMIP6 piControl simulation ​ \\  cf. documenting papers: Otto-Bliesner et al, in prep and Kageyama et al, subm. |
 +
 +===== Collaboration =====
 +
 +  * The PMIP4-CMIP6 **lig127k** simulation is being coordinated with [[http://​www.climate-cryosphere.org/​activities/​targeted/​ismip6|ISMIP6]]. The output from the lig127k simulation will be used by ISMIP6 to force standalone ice sheet experiments (//​lastInterglacialforcedism//​). This will increase our understanding of the sensitivity of the ice sheets, complementing the suite of standalone ISMIP6 ice sheet experiments.
 +
 +  * The PMIP4-CMIP6 **midHolocene** and **lig127k** simulations are also expected to be relevant to analyses in [[http://​www.climate-cryosphere.org/​activities/​groups/​seaicemodeling/​simip|SIMIP]]’s assessment of the role of sea-ice changes in climate changes and [[https://​cmip.ucar.edu/​aer-chem-mip|AerChemMIP]]’s assessment of the role of dust
 +
 +===== Sensitivity experiments =====
 +
 +==== Sensitivity to Prescribed Vegetation ====
 +
 +==== Sensitivity to Prescribed Ice Sheets ====
 +
 +==== Simulation to explore the effects of the H11 event ====