| Both sides previous revision
Previous revision
Next revision
|
Previous revision
|
exp_design:degla_t2 [2019/02/08 09:33]
jypeter Updated the spinup exp name, and orbital parameters |
exp_design:degla_t2 [2020/04/08 08:45] (current)
jypeter [Associated publications] |
| ==== Associated publications ==== | ==== Associated publications ==== |
| |
| * **Penultimate Deglaciation experiment design, version 1:**\\ \\ **The penultimate deglaciation: protocol for PMIP4 transient numerical simulations between 140 and 127 ka, version 1.0**, Menviel et al, GMD, 2019, [[https://dx.doi.org/available_soon]] | * **Penultimate Deglaciation experiment design, version 1:**\\ \\ **The penultimate deglaciation: protocol for Paleoclimate Modelling Intercomparison Project (PMIP) phase 4 transient numerical simulations between 140 and 127 ka, version 1.0**, Menviel, L., Capron, E., Govin, A., Dutton, A., Tarasov, L., Abe-Ouchi, A., Drysdale, R. N., Gibbard, P. L., Gregoire, L., He, F., Ivanovic, R. F., Kageyama, M., Kawamura, K., Landais, A., Otto-Bliesner, B. L., Oyabu, I., Tzedakis, P. C., Wolff, E., and Zhang, X., Geosci. Model Dev., 12, 3649-3685, [[https://doi.org/10.5194/gmd-12-3649-2019|doi:10.5194/gmd-12-3649-2019]], 2019\\ \\ [[https://www.geosci-model-dev.net/12/3649/2019/gmd-12-3649-2019-supplement.zip|Supplement (Menviel et al, GMD, 2019)]] |
| |
| ===== Version 1 Specifications ===== | ===== Version 1 Specifications ===== |
| | Astronomical parameters | **eccentricity** = 0.033 \\ **obliquity** = 23.414° \\ **perihelion-180°** = 73° \\ **Date of vernal equinox** : Noon, 21st March | | | Astronomical parameters | **eccentricity** = 0.033 \\ **obliquity** = 23.414° \\ **perihelion-180°** = 73° \\ **Date of vernal equinox** : Noon, 21st March | |
| | Solar constant | 1361.0 ± 0.51365 W m<sup>-2</sup> | | | Solar constant | 1361.0 ± 0.51365 W m<sup>-2</sup> | |
| | Trace gases | **CO<sub>2</sub>** = 195 ppm \\ **CH<sub>4</sub>** = 387 ppb \\ **N<sub>2</sub>O** = 201 ppb \\ **CFC** = 0 \\ **O<sub>3</sub>** = Preindustrial (e.g. 10 DU) | | | Trace gases | **CO<sub>2</sub>** = 191 ppm \\ **CH<sub>4</sub>** = 385 ppb \\ **N<sub>2</sub>O** = 201 ppb \\ **CFC** = 0 \\ **O<sub>3</sub>** = Preindustrial (e.g. 10 DU) | |
| | Ice sheets, orography \\ and coastlines | 140 ka data from Combined ice-sheet reconstruction (IcIES-NH, GSM-G and GSM-A): [ [[:data:ice|Access to data]] ] | | | Ice sheets, orography \\ and coastlines | 140 ka data from Combined ice-sheet reconstruction (IcIES-NH, GSM-G and GSM-A): [ [[:data:ice_glac_1d|Access to data]] ]\\ (Abe-Ouchi et al 2013; Briggs et al 2014; Tarasov et al 2012) | |
| | Bathymetry | Keep consistent with the coastlines, using either: \\ - Data associated with the ice sheet \\ - Preindustrial bathymetry | | | Bathymetry | Keep consistent with the coastlines, using either: \\ - Data associated with the ice sheet \\ - Preindustrial bathymetry | |
| | Global ocean salinity | + 0.85 psu, relative to preindustrial | | | Global ocean salinity | + 0.85 psu, relative to preindustrial | |
| | PMIP4 name | <wrap em>PDGv1</wrap> | | | PMIP4 name | <wrap em>PDGv1</wrap> | |
| | Initial conditions (140 ka) | Recommended: PDGv1-PGMspin \\ See above for details. The method must be documented, including information on the state of spinup | | | Initial conditions (140 ka) | Recommended: PDGv1-PGMspin \\ See above for details. The method must be documented, including information on the state of spinup | |
| | Astronomical parameters | Transient, as per [[#References_cited|Berger (1978)]]\\ [ [[ftp://ftp.ncdc.noaa.gov/pub/data/paleo/insolation/bein1.dat|Access to data]] **&** [[ftp://ftp.ncdc.noaa.gov/pub/data/paleo/insolation/readme_insolation.txt|README !]] ]| | | Astronomical parameters | Transient, as per [[#References_cited|Berger (1978)]]\\ [ [[ftp://ftp.ncdc.noaa.gov/pub/data/paleo/climate_forcing/orbital_variations/insolation//bein1.dat|Access to data]] **&** [[ftp://ftp.ncdc.noaa.gov/pub/data/paleo/climate_forcing/orbital_variations/insolation//readme_insolation.txt|README !]] ] (''md5sum bein1.dat'' => ''726dfae36b33ae248bdb94f59387a19f'') | |
| | Solar constant | 1361.0 ± 0.51365 W m<sup>-2</sup> | | | Solar constant | 1361.0 ± 0.51365 W m<sup>-2</sup> | |
| | Trace gases | **CO<sub>2</sub>** = Transient, as per [[#References_cited| the spline of Koehler et al. (2017)]]: [ [[https://doi.pangaea.de/10.1594/PANGAEA.871273|Access to data]] ] \\ **CH<sub>4</sub>** = Transient, as per [[#References_cited| the spline of Koehler et al. (2017)]]: [ [[https://doi.pangaea.de/10.1594/PANGAEA.871273|Access to data]] ] \\ **N<sub>2</sub>O** = Linear increase from 201 ppb at 140 ka to 218.74 ppb at 134.5 ka\\ then transient, as per [[#References_cited| the spline of Koehler et al. (2017)]]: [ [[https://doi.pangaea.de/10.1594/PANGAEA.871273|Access to data]] ]\\ **CFC** = 0 \\ **O<sub>3</sub>** = Preindustrial (e.g. 10 DU) | | | Trace gases | **CO<sub>2</sub>** = Transient, as per [[#References_cited| the spline of Koehler et al. (2017)]]: [ [[https://doi.pangaea.de/10.1594/PANGAEA.871273|Access to data]] ] \\ **CH<sub>4</sub>** = Transient, as per [[#References_cited| the spline of Koehler et al. (2017)]]: [ [[https://doi.pangaea.de/10.1594/PANGAEA.871273|Access to data]] ] \\ **N<sub>2</sub>O** = Linear increase from 201 ppb at 140 ka to 218.74 ppb at 134.5 ka\\ then transient, as per [[#References_cited| the spline of Koehler et al. (2017)]]: [ [[https://doi.pangaea.de/10.1594/PANGAEA.871273|Access to data]] ]\\ **CFC** = 0 \\ **O<sub>3</sub>** = Preindustrial (e.g. 10 DU) | |
| | Ice sheet | Transient: Combined ice-sheet reconstruction (IcIES-NH, GSM-G and GSM-A) [ [[:data:ice|Access to data]] ] \\ How often to update the ice sheet is optional | | | Ice sheet | Transient: Combined ice-sheet reconstruction (IcIES-NH, GSM-G and GSM-A) [ [[:data:ice_glac_1d|Access to data]] ]\\ (Abe-Ouchi et al 2013; Briggs et al 2014; Tarasov et al 2012) \\ How often to update the ice sheet is optional | |
| | Orography and coastlines | Transient. To be consistent with the choice of ice sheet. \\ Orography is updated on the same timestep as the ice sheet. It is optional how often the land-sea mask is updated, but ensure consistency with the ice sheet reconstruction is maintained | | | Orography and coastlines | Transient. To be consistent with the choice of ice sheet. \\ Orography is updated on the same timestep as the ice sheet. It is optional how often the land-sea mask is updated, but ensure consistency with the ice sheet reconstruction is maintained | |
| | Bathymetry | Keep consistent with the coastlines, and otherwise use either: \\ - Data associated with the ice sheet; it is optional how often the bathymetry is updated \\ - Preindustrial bathymetry | | | Bathymetry | Keep consistent with the coastlines, and otherwise use either: \\ - Data associated with the ice sheet; it is optional how often the bathymetry is updated \\ - Preindustrial bathymetry | |
| | River routing | Ensure that rivers reach the coastline \\ It is recommended (optional) to use one of the following: \\ - Self-consistent paleo-routing described in section 6.2.3 \\ - Preindustrial configuration for the model \\ - Manual/model calculation of river network to match topography | | | River routing | Ensure that rivers reach the coastline \\ It is recommended (optional) to use one of the following: \\ - Self-consistent paleo-routing described in section 6.2.3 \\ - Preindustrial configuration for the model \\ - Manual/model calculation of river network to match topography | |
| | Freshwater fluxes | Recommended North Atlantic option is //fSL// and a constant 0.0135 Sv flux around the Antarctic coast between 140-130 ka \\ [ {{ :exp_design:t2-fwfflux_v190201.txt |Access to data}} ] \\ - //fSL// : meltwater flux based on changes in sea-level \\ - //fIRD// : meltwater flux based on Norwegian Sea and North Atlantic IRD \\ - //fIC// : meltwater flux based on ice-sheet changes \\ - //fSL2// : meltwater flux based on changes in sea-level and triangular input max. 0.15 Sv between 131-128 ka on the Antarctic coast \\ - //fUN// : Globally uniform meltwater input based on sea-level changes | | | Freshwater fluxes | Recommended North Atlantic option is //fSL// and a constant 0.0135 Sv flux around the Antarctic coast between 140-130 ka \\ [ {{ :exp_design:t2-fwfflux_v190201.txt |Access to data}} ] (''md5sum t2-fwfflux_v190201.txt'' => ''5d073eb89df1c884fc654de930840d1b'')\\ - //fSL// : meltwater flux based on changes in sea-level \\ - //fIRD// : meltwater flux based on Norwegian Sea and North Atlantic IRD \\ - //fIC// : meltwater flux based on ice-sheet changes \\ - //fSL2// : meltwater flux based on changes in sea-level and triangular input max. 0.15 Sv between 131-128 ka on the Antarctic coast \\ - //fUN// : Globally uniform meltwater input based on sea-level changes | |
| | Vegetation & land cover \\ Aerosols (dust) | Prescribed preindustrial cover or dynamic vegetation model \\ Prescribed preindustrial distribution or prognostic aerosols | | | Vegetation & land cover \\ Aerosols (dust) | Prescribed preindustrial cover or dynamic vegetation model \\ Prescribed preindustrial distribution or prognostic aerosols | |
| |
| === Overview === | === Overview === |
| |
| See Table 3 and Table 4 of the [[https://dx.doi.org/available_soon|Penultimate Deglaciation GMD paper]] | See Table 3 and Table 4 of the [[https://doi.org/10.5194/gmd-12-3649-2019|Penultimate Deglaciation GMD paper]] |
| |
| ^ Table 3 ^ Table 4 ^ | ^ Table 3 ^ Table 4 ^ |
| The data files have a version string (''_vYYmmDD'') in their file name, indicating when they have been uploaded to this site (in case we have to update them later and use a more recent version/date). | The data files have a version string (''_vYYmmDD'') in their file name, indicating when they have been uploaded to this site (in case we have to update them later and use a more recent version/date). |
| |
| | {{ :exp_design:ch69k09_revisedage_v190201.txt |CH69-K09}} (txt) | | You can also check that you have the correct version of the files by computing their checksums (''md5sum data_file'') and comparing them to the checksums in the table below. Getting a different checksum means that you either have a wrong version of the file, or that the file content was corrupted during the transfer |
| | {{ :exp_design:md952042_revisedage_v190201.txt |MD95-2042}} (txt) | | |
| | {{ :exp_design:odp976_revisedage_v190201.txt |ODP976}} (txt) | | ^ Data ^ version\\ string ^ md5sum ^ |
| | {{ :exp_design:odp980_revisedage_v190201.txt |ODP980}} (txt) | | | {{ :exp_design:ch69k09_revisedage_v190201.txt |CH69-K09}} (txt) | _v190201 | 4f4edfba575324b504beb20ade0b9d28 | |
| | {{ :exp_design:odp983_revisedage_v190201.txt |ODP983}} (txt) | | | {{ :exp_design:md952042_revisedage_v190201.txt |MD95-2042}} (txt) | _v190201 | cc24515a1a59417486e80155c4ebbbaa | |
| | {{ :exp_design:odp1063_revisedage_v190201.txt |ODP1063}} (txt) | | | {{ :exp_design:odp976_revisedage_v190201.txt |ODP976}} (txt) | _v190201 | 6958069100a8df8fde00dd06e0f9bd52 | |
| | {{ :exp_design:su9003_revisedage_v190201.txt |SU90-03}} (txt) | | | {{ :exp_design:odp980_revisedage_v190201.txt |ODP980}} (txt) | _v190201 | c8310b4db60415e055c131d57b6cfd56 | |
| | {{ :exp_design:sl_lig_dutton2017_v190201.txt |SL_LIG_Dutton2017}} (txt) | | | {{ :exp_design:odp983_revisedage_v190201.txt |ODP983}} (txt) | _v190201 | e7cb293ceb7b7f7a8771206ec794c938 | |
| | {{ :exp_design:d13cstack_v190201.txt |d13Cstack}} (txt) Stack of U1308, CH69-K09 and ODP1063 | | | {{ :exp_design:odp1063_revisedage_v190201.txt |ODP1063}} (txt) | _v190201 | bb075a7f8fe8ffb9bd3778d6584c3924 | |
| | {{ :exp_design:ird-stack_v190201.txt |IRD-stack}} (txt) | | | {{ :exp_design:su9003_revisedage_v190201.txt |SU90-03}} (txt) | _v190201 | 445ea11f144843ceb7f8128df5fafaf6 | |
| | {{ :exp_design:figure9_data_v190201.xlsx |Figure 9 data}} (xlsx) | | | {{ :exp_design:sl_lig_dutton2017_v190201.txt |SL_LIG_Dutton2017}} (txt) | _v190201 | c1151b63ae7c720e7b5b6b3ff2f2451a | |
| | | {{ :exp_design:d13cstack_v190201.txt |d13Cstack}} (txt) Stack of U1308, CH69-K09 and ODP1063 | _v190201 | d44b91b35fbf6e2e142dd749200b68e4 | |
| | | {{ :exp_design:ird-stack_v190201.txt |IRD-stack}} (txt) | _v190201 | 51bf8dd9d019bf76e3a983eddf35782e | |
| | | {{ :exp_design:figure9_data_v190213.xlsx |Figure 9 data}} (xlsx) | _v190213 | 9ec7aae777fdce6e1447a93054622f2c | |
| |
| ===== References cited ===== | ===== References cited ===== |
| |
| * Berger, A.: Long-Term Variations of Daily Insolation and Quaternary Climatic Changes, J. Atmospheric Sci., 35(12), 2362–2367, [[http://journals.ametsoc.org/doi/abs/10.1175/1520-0469(1978)035%3C2362:LTVODI%3E2.0.CO%3B2|doi:10.1175/1520-0469(1978)035<2362:LTVODI>2.0.CO;2]], 1978. | * Ayako Abe-Ouchi, F. Saito, K. Kawamura, M. Raymo, J. Okuno, K. Takahashi, and H. Blatter: **Insolation-driven 100,000-year glacial cycles and hysteresis of ice-sheet volume**, Nature, 500, 190–193, 2013, [[https://doi.org/10.1038/nature12374|doi:10.1038/nature12374]] |
| * Kageyama, M., Braconnot, P., Harrison, S. P., Haywood, A. M., Jungclaus, J., Otto-Bliesner, B. L., Peterschmitt, J.-Y., Abe-Ouchi, A., Albani, S., Bartlein, P. J., Brierley, C., Crucifix, M., Dolan, A., Fernandez-Donado, L., Fischer, H., Hopcroft, P. O., Ivanovic, R. F., Lambert, F., Lunt, D. J., Mahowald, N. M., Peltier, W. R., Phipps, S. J., Roche, D. M., Schmidt, G. A., Tarasov, L., Valdes, P. J., Zhang, Q. and Zhou, T.: PMIP4-CMIP6: the contribution of the Paleoclimate Modelling Intercomparison Project to CMIP6, Geosci. Model Dev. Discuss., 1–46, [[http://www.geosci-model-dev-discuss.net/gmd-2016-106/|doi:10.5194/gmd-2016-106]], 2016. | * Berger, A.: **Long-Term Variations of Daily Insolation and Quaternary Climatic Changes**, J. Atmospheric Sci., 35(12), 2362–2367, [[http://journals.ametsoc.org/doi/abs/10.1175/1520-0469(1978)035%3C2362:LTVODI%3E2.0.CO%3B2|doi:10.1175/1520-0469(1978)035<2362:LTVODI>2.0.CO;2]], 1978. |
| * P. Koehler and C. Nehrbass-Ahles and J. Schmitt and T.F. Stocker and H. Fischer: A 156 kyr smoothed history of the atmospheric greenhouse gases CO<sub>2</sub>, CH<sub>4</sub>, and N<sub>2</sub>O and their radiative forcing, Earth System Science Data, 9, 363–387, [[https://www.earth-syst-sci-data.net/9/363/2017/|doi:10.5194/essd-9-363-2017]], 2017. | * Robert D. Briggs , David Pollard , Lev Tarasov, **A data-constrained large ensemble analysis of Antarctic evolution since the Eemian**, Quaternary Science Reviews, Volume 103, 1 November 2014, Pages 91–115, [[http://www.sciencedirect.com/science/article/pii/S0277379114003448|doi:10.1016/j.quascirev.2014.09.003]] |
| * Veres, D., Bazin, L., Landais, A., Toyé Mahamadou Kele, H., Lemieux-Dudon, B., Parrenin, F., Martinerie, P., Blayo, E., Blunier, T., Capron, E., Chappellaz, J., Rasmussen, S. O., Severi, M., Svensson, A., Vinther, B. and Wolff, E. W.: The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years, Clim Past, 9(4), 1733–1748, [[http://www.clim-past.net/9/1733/2013/|doi:10.5194/cp-9-1733-2013]], 2013. | * Kageyama, M., Braconnot, P., Harrison, S. P., Haywood, A. M., Jungclaus, J., Otto-Bliesner, B. L., Peterschmitt, J.-Y., Abe-Ouchi, A., Albani, S., Bartlein, P. J., Brierley, C., Crucifix, M., Dolan, A., Fernandez-Donado, L., Fischer, H., Hopcroft, P. O., Ivanovic, R. F., Lambert, F., Lunt, D. J., Mahowald, N. M., Peltier, W. R., Phipps, S. J., Roche, D. M., Schmidt, G. A., Tarasov, L., Valdes, P. J., Zhang, Q. and Zhou, T.: **PMIP4-CMIP6: the contribution of the Paleoclimate Modelling Intercomparison Project to CMIP6**, Geosci. Model Dev. Discuss., 1–46, [[http://www.geosci-model-dev-discuss.net/gmd-2016-106/|doi:10.5194/gmd-2016-106]], 2016. |
| | * P. Koehler and C. Nehrbass-Ahles and J. Schmitt and T.F. Stocker and H. Fischer: **A 156 kyr smoothed history of the atmospheric greenhouse gases CO<sub>2</sub>, CH<sub>4</sub>, and N<sub>2</sub>O and their radiative forcing**, Earth System Science Data, 9, 363–387, [[https://www.earth-syst-sci-data.net/9/363/2017/|doi:10.5194/essd-9-363-2017]], 2017. |
| | * Lev Tarasov, Arthur S. Dyke, Radford M. Neal and W.R. Peltier, **A data-calibrated distribution of deglacial chronologies for the North American ice complex from glaciological modeling**, Earth and Planetary Science Letters, Volumes 315–316, 15 January 2012, Pages 30–40, [[http://www.sciencedirect.com/science/article/pii/S0012821X11005243|doi:10.1016/j.epsl.2011.09.010]] |
| | * Veres, D., Bazin, L., Landais, A., Toyé Mahamadou Kele, H., Lemieux-Dudon, B., Parrenin, F., Martinerie, P., Blayo, E., Blunier, T., Capron, E., Chappellaz, J., Rasmussen, S. O., Severi, M., Svensson, A., Vinther, B. and Wolff, E. W.: **The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years**, Clim Past, 9(4), 1733–1748, [[http://www.clim-past.net/9/1733/2013/|doi:10.5194/cp-9-1733-2013]], 2013. |
| |