Mid-Pliocene global climate simulation with MRI-CGCM2.3: set-up and initial results of PlioMIP Experiments 1 and 2

Kamae, Youichi; Ueda, Hiroaki

doi:10.5194/gmd-5-793-2012

Cited by 34 publications

(27 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The simulated general patterns of mid-Pliocene warming agree with our earlier coupled simulations , and also simulations from other PlioMIP groups (e.g. Chan et al, 2011;Koenig et al, 2012;Yan et al, 2012;Zhang et al, 2012;Kamae and Ueda, 2012;Contoux et al, 2012). The analysis of mid-Pliocene climate anomalies necessitates a reference experiment.…”

Section: Discussion and Summarysupporting

confidence: 82%

“…Near the Equator, the zonal mean annual SAT increases only by 1 • C. At high latitudes of the Southern Hemisphere, the zonal mean annual SAT increases by 11 • C. Largest warming appears near the North Pole, where the zonal mean annual SAT increases by 13 • C. Such changes, with stronger warming at high latitudes, follow the mid-Pliocene SST anomalies reconstructed by the PRISM , and also agree with PlioMIP simulations of other groups (e.g. Chan et al, 2011;Koenig et al, 2012;Yan et al, 2012;Kamae and Ueda, 2012;Contoux et al, 2012).…”

Section: Satsupporting

confidence: 83%

“…We indeed find a difference between our AGCM and AOGCM simulations , and also in the simulations carried out by Chan et al (2011). The simulations carried out by Kamae and Ueda (2012) and Contoux et al (2012) on the other hand do not show such differences. This issue should be noted and further assessed during the upcoming PlioMIP analysis and synthesis phase.…”

Section: Discussion and Summarysupporting

confidence: 57%

See 2 more Smart Citations

Pre-industrial and mid-Pliocene simulations with NorESM-L: AGCM simulations

Zhang

Yan

2012

Geosci. Model Dev.

View full text Add to dashboard Cite

Abstract. In the Pliocene Model Intercomparison Project (PlioMIP), two sets of experiments are suggested. One includes a reference and a mid-Pliocene experiment run with atmosphere general circulation models (AGCM experiments, referred to as Experiments I), the other includes a pre-industrial and a mid-Pliocene experiment run with coupled ocean-atmosphere general circulation models (AOGCM experiments, referred to as Experiments II). In this paper, we describe the AGCM experiments with the atmosphere component in the low-resolution version of the Norwegian Earth System Model (NorESM-L), and also assess the potential uncertainties in analyzing mid-Pliocene climate anomalies that might result from the choice of the sea surface temperature (SST) forcing for the reference experiment (pre-industrial or modern). We carry out a mid-Pliocene experiment, a control experiment forced by the modern SST fields, and a pre-industrial experiment forced by the monthly SST fields from HadISST averaged between 1879 and 1900. Our experiments illustrate that the simulated mid-Pliocene global mean annual surface air temperature (SAT) is 17.1 • C. It is 2.5 • C warmer than the control experiment, but 2.7 • C warmer than the pre-industrial experiment. We find that the uncertainties in analyses of mid-Pliocene climate anomalies are small on a global scale, but still large on a regional scale. On the regional scale, these uncertainties should be noted and assessed in future PlioMIP studies.

show abstract

Section: Discussion and Summarysupporting

confidence: 82%

Section: Satsupporting

confidence: 83%

Section: Discussion and Summarysupporting

confidence: 57%

See 1 more Smart Citation

Pre-industrial and mid-Pliocene simulations with NorESM-L: AGCM simulations

Zhang

Yan

2012

Geosci. Model Dev.

View full text Add to dashboard Cite

show abstract

“…It is widely used for the simulation of equilibrium vegetation in past climates, including the pre-Quaternary climates of the Tortonian (Pound et al, 2011) and Piacenzian (Salzmann et al, 2008;Kamae and Ueda, 2012) and the more recent mid-Holocene (Kaplan et al, 2003;Krinner et al, 2012). This model simulates the equilibrium distribution of 28 biomes.…”

Section: Biome4 Vegetation Modelmentioning

confidence: 99%

Megalake Chad impact on climate and vegetation during the late Pliocene and the mid-Holocene

et al. 2013

View full text Add to dashboard Cite

Given the growing evidence for megalakes in the geological record, assessing their impact on climate and vegetation is important for the validation of palaeoclimate simulations and therefore the accuracy of model–data comparison in lacustrine environments. Megalake Chad (MLC) occurrences are documented not only for the mid-Holocene but also for the Mio-Pliocene (Schuster et al., 2009). At this time, the surface covered by water would have reached up to ~350 000 km² (Ghienne et al., 2002; Schuster et al., 2005; Leblanc et al., 2006), making it an important evaporation source, possibly modifying climate and vegetation in the Chad Basin. We investigated the impact of such a giant continental water area in two different climatic backgrounds within the Paleoclimate Model Intercomparison Project phase 3 (PMIP3): the late Pliocene (3.3 to 3 Ma, i.e. the mid-Piacenzian warm period) and the mid-Holocene (6 kyr BP). In all simulations including MLC, precipitation is drastically reduced above the lake surface because deep convection is inhibited by overlying colder air. Meanwhile, convective activity is enhanced around MLC because of the wind increase generated by the flat surface of the megalake, transporting colder and moister air towards the eastern shore of the lake. The effect of MLC on precipitation and temperature is not sufficient to widely impact vegetation patterns. Nevertheless, tropical savanna is present in the Chad Basin in all climatic configurations, even without MLC presence, showing that the climate itself is the driver of favourable environments for sustainable hominid habitats

show abstract

“…The respective roles of the boundary conditions can be evaluated by comparing results of the sensitivity runs. In this study, we conduct PlioMIP2 climate simulations by using an AOGCM, MRI-CGCM2.3, that was also used in the PlioMIP1 (Kamae and Ueda, 2012;hereafter KU12). The results of the PlioMIP1 run, the PlioMIP2 run, and the PlioMIP2 sensitivity runs with swapped boundary con- ditions are used to examine respective roles of the updated boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of Pliocene climate simulations in MRI-CGCM2.3 to respective boundary conditions

2016

View full text Add to dashboard Cite

Abstract. Accumulations of global proxy data are essential steps for improving reliability of climate model simulations for the Pliocene warming climate. In the Pliocene Model Intercomparison Project phase 2 (PlioMIP2), a part project of the Paleoclimate Modelling Intercomparison Project phase 4, boundary forcing data have been updated from the PlioMIP phase 1 due to recent advances in understanding of oceanic, terrestrial and cryospheric aspects of the Pliocene palaeoenvironment. In this study, sensitivities of Pliocene climate simulations to the newly archived boundary conditions are evaluated by a set of simulations using an atmosphereocean coupled general circulation model, MRI-CGCM2.3. The simulated Pliocene climate is warmer than pre-industrial conditions for 2.4 • C in global mean, corresponding to 0.6 • C warmer than the PlioMIP1 simulation by the identical climate model. Revised orography, lakes, and shrunk ice sheets compared with the PlioMIP1 lead to local and remote influences including snow and sea ice albedo feedback, and poleward heat transport due to the atmosphere and ocean that result in additional warming over middle and high latitudes. The amplified higher-latitude warming is supported qualitatively by the proxy evidences, but is still underestimated quantitatively. Physical processes responsible for the global and regional climate changes should be further addressed in future studies under systematic intermodel and data-model comparison frameworks.

show abstract

Mid-Pliocene global climate simulation with MRI-CGCM2.3: set-up and initial results of PlioMIP Experiments 1 and 2

Cited by 34 publications

References 59 publications

Pre-industrial and mid-Pliocene simulations with NorESM-L: AGCM simulations

Pre-industrial and mid-Pliocene simulations with NorESM-L: AGCM simulations

Megalake Chad impact on climate and vegetation during the late Pliocene and the mid-Holocene

Sensitivity of Pliocene climate simulations in MRI-CGCM2.3 to respective boundary conditions

Contact Info

Product

Resources

About