Articles | Volume 22, issue 4
https://doi.org/10.5194/cp-22-879-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-22-879-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
22 Apr 2026
Research article |
| 22 Apr 2026
| 22 Apr 2026
Weakened miocene temperature response to orbital forcing compared to the modern-day
Yurui Zhang
CORRESPONDING AUTHOR
State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, China
Jilin Wei
State Key Laboratory of Earth System Numerical Modeling and Application, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
Zhen Li
State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, China
Nan Dai
State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, China
Weipeng Zheng
State Key Laboratory of Earth System Numerical Modeling and Application, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
Earth System Numerical Simulation Science Center, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Qiuzhen Yin
Earth and Climate Research Center, Earth and Life Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium
Agatha M. de Boer
Department of Geological Sciences, Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
Zhengguo Shi
State Key Laboratory of Loess Science, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, China
Lixia Zhang
State Key Laboratory of Earth System Numerical Modeling and Application, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
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Pengfei Wang, Jinrong Jiang, Pengfei Lin, Mengrong Ding, Junlin Wei, Feng Zhang, Lian Zhao, Yiwen Li, Zipeng Yu, Weipeng Zheng, Yongqiang Yu, Xuebin Chi, and Hailong Liu
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Global ocean general circulation models are a fundamental tool for oceanography research, ocean forecast, and climate change research. The increasing resolution will greatly improve simulations of the models, but it also demands much more computing resources. In this study, we have ported an ocean general circulation model to a heterogeneous computing system and have developed a 3–5 km model version. A 14-year integration has been conducted and the preliminary results have been evaluated.
Cited articles
Acosta, R. P., Burls, N. J., Pound, M. J., Bradshaw, C. D., De Boer, A. M., Herold, N., Huber, M., Liu, X., Donnadieu, Y., Farnsworth, A., Frigola, A., Lunt, D. J., von der Heydt, A. S., Hutchinson, D. K., Knorr, G., Lohmann, G., Marzocchi, A., Prange, M., Sarr, A. C., Li, X., and Zhang, Z.: A Model-Data Comparison of the Hydrological Response to Miocene Warmth: Leveraging the MioMIP1 Opportunistic Multi-Model Ensemble, Paleoceanography and Paleoclimatology, 39, e2023PA004726, https://doi.org/10.1029/2023PA004726, 2024.
Battisti, D. S., Ding, Q., and Roe, G. H.: Coherent pan-Asian climatic and isotopic response to orbital forcing of tropical insolation, J. Geophys. Res.-Atmos., 119, https://doi.org/10.1002/2014jd021960, 2014.
Berger, A.: Long-Term Variations of Daily Insolation and Quaternary Climatic Changes, J. Atmos. Sci., 35, 2362–2367, https://doi.org/10.1175/1520-0469(1978)035<2362:LTVODI>2.0.CO;2, 1978.
Berger, A., Yin, Q., and Wu, Z.: Length of astronomical seasons, total and average insolation over seasons, Quaternary Sci. Rev., 334, 108620, https://doi.org/10.1016/j.quascirev.2024.108620, 2024.
Bloch-Johnson, J., Rugenstein, M., Stolpe, M. B., Rohrschneider, T., Zheng, Y., and Gregory, J. M.: Climate Sensitivity Increases Under Higher CO2 Levels Due to Feedback Temperature Dependence, Geophys. Res. Lett., 48, https://doi.org/10.1029/2020gl089074, 2021.
Bosmans, J. H. C., Erb, M. P., Dolan, A. M., Drijfhout, S. S., Tuenter, E., Hilgen, F. J., Edge, D., Pope, J. O., and Lourens, L. J.: Response of the Asian summer monsoons to idealized precession and obliquity forcing in a set of GCMs, Quaternary Sci. Rev., 188, 121–135, https://doi.org/10.1016/j.quascirev.2018.03.025, 2018.
Bova, S., Rosenthal, Y., Liu, Z., Godad, S. P., and Yan, M.: Seasonal origin of the thermal maxima at the Holocene and the last interglacial, Nature, 589, 548–553, https://doi.org/10.1038/s41586-020-03155-x, 2021.
Brierley, C. M., Zhao, A., Harrison, S. P., Braconnot, P., Williams, C. J. R., Thornalley, D. J. R., Shi, X., Peterschmitt, J.-Y., Ohgaito, R., Kaufman, D. S., Kageyama, M., Hargreaves, J. C., Erb, M. P., Emile-Geay, J., D'Agostino, R., Chandan, D., Carré, M., Bartlein, P. J., Zheng, W., Zhang, Z., Zhang, Q., Yang, H., Volodin, E. M., Tomas, R. A., Routson, C., Peltier, W. R., Otto-Bliesner, B., Morozova, P. A., McKay, N. P., Lohmann, G., Legrande, A. N., Guo, C., Cao, J., Brady, E., Annan, J. D., and Abe-Ouchi, A.: Large-scale features and evaluation of the PMIP4-CMIP6 midHolocene simulations, Clim. Past, 16, 1847–1872, https://doi.org/10.5194/cp-16-1847-2020, 2020.
Burls, N. J., Bradshaw, C. D., De Boer, A. M., Herold, N., Huber, M., Pound, M., Donnadieu, Y., Farnsworth, A., Frigola, A., Gasson, E., von der Heydt, A. S., Hutchinson, D. K., Knorr, G., Lawrence, K. T., Lear, C. H., Li, X., Lohmann, G., Lunt, D. J., Marzocchi, A., Prange, M., Riihimaki, C. A., Sarr, A. C., Siler, N., and Zhang, Z.: Simulating Miocene Warmth: Insights From an Opportunistic Multi-Model Ensemble (MioMIP1), Paleoceanography and Paleoclimatology, 36, https://doi.org/10.1029/2020pa004054, 2021.
Dai, G., Zhang, Z., Otterå, O. H., Langebroek, P. M., Yan, Q., Zhang, R., and Zhu, Z.: Winter Insolation Modulates Boreal Tropical Monsoonal Temperatures in the Late Pleistocene, J. Geophys. Res.-Atmos., 129, https://doi.org/10.1029/2023jd040577, 2024.
De Vleeschouwer, D., Vahlenkamp, M., Crucifix, M., and Pälike, H.: Alternating Southern and Northern Hemisphere climate response to astronomical forcing during the past 35 m.y., Geology, 45, 375–378, https://doi.org/10.1130/g38663.1, 2017.
Frigola, A., Prange, M., and Schulz, M.: A dynamic ocean driven by changes in CO2 and Antarctic ice-sheet in the middle Miocene, Palaeogeogr. Palaeocl., 579, 110591, https://doi.org/10.1016/j.palaeo.2021.110591, 2021.
Goldner, A., Herold, N., and Huber, M.: The challenge of simulating the warmth of the mid-Miocene climatic optimum in CESM1, Clim. Past, 10, 523–536, https://doi.org/10.5194/cp-10-523-2014, 2014.
Halberstadt, A. R. W., Chorley, H., Levy, R. H., Naish, T., DeConto, R. M., Gasson, E., and Kowalewski, D. E.: CO2 and tectonic controls on Antarctic climate and ice-sheet evolution in the mid-Miocene, Earth Planet. Sc. Lett., 564, 116908, https://doi.org/10.1016/j.epsl.2021.116908, 2021.
Harzhauser, M., Piller, W. E., Müllegger, S., Grunert, P., and Micheels, A.: Changing seasonality patterns in Central Europe from Miocene Climate Optimum to Miocene Climate Transition deduced from the Crassostrea isotope archive, Global Planet. Change, 76, 77–84, https://doi.org/10.1016/j.gloplacha.2010.12.003, 2011.
Hays, J. D., Imbrie, J., and Shackleton, N. J.: Variations in the Earth's Orbit: Pacemaker of the Ice Ages, Science, 194, 1121–1132, https://doi.org/10.1126/science.194.4270.1121, 1976.
Heinemann, M., Jungclaus, J. H., and Marotzke, J.: Warm Paleocene/Eocene climate as simulated in ECHAM5/MPI-OM, Clim. Past, 5, 785–802, https://doi.org/10.5194/cp-5-785-2009, 2009.
Herold, N., Yin, Q. Z., Karami, M. P., and Berger, A.: Modelling the climatic diversity of the warm interglacials, Quaternary Sci. Rev., 56, 126–141, https://doi.org/10.1016/j.quascirev.2012.08.020, 2012.
Hoelzmann, P., Keding, B., Berke, H., Kröpelin, S., and Kruse, H.-J.: Environmental change and archaeology: lake evolution and human occupation in the Eastern Sahara during the Holocene, Palaeogeogr. Palaeocl., 169, 193–217, https://doi.org/10.1016/S0031-0182(01)00211-5, 2001.
Holbourn, A., Kuhnt, W., Schulz, M., Flores, J.-A., and Andersen, N.: Orbitally-paced climate evolution during the middle Miocene “Monterey” carbon-isotope excursion, Earth Planet. Sc. Lett., 261, 534–550, https://doi.org/10.1016/j.epsl.2007.07.026, 2007.
Holbourn, A., Kuhnt, W., Clemens, S., Prell, W., and Andersen, N.: Middle to late Miocene stepwise climate cooling: Evidence from a high-resolution deep water isotope curve spanning 8 million years, Paleoceanography, 28, 688–699, https://doi.org/10.1002/2013pa002538, 2013.
Holbourn, A., Kuhnt, W., Clemens, S. C., Kochhann, K. G. D., Johnck, J., Lubbers, J., and Andersen, N.: Late Miocene climate cooling and intensification of southeast Asian winter monsoon, Nat. Commun., 9, 1584, https://doi.org/10.1038/s41467-018-03950-1, 2018.
Huntington, T. G.: Evidence for intensification of the global water cycle: Review and synthesis, J. Hydrol., 319, 83–95, https://doi.org/10.1016/j.jhydrol.2005.07.003, 2006.
Kemp, A. E. S., Grigorov, I., Pearce, R. B., and Naveira Garabato, A. C.: Migration of the Antarctic Polar Front through the mid-Pleistocene transition: evidence and climatic implications, Quaternary Sci. Rev., 29, 1993–2009, https://doi.org/10.1016/j.quascirev.2010.04.027, 2010.
Laepple, T. and Lohmann, G.: Seasonal cycle as template for climate variability on astronomical timescales, Paleoceanography, 24, https://doi.org/10.1029/2008pa001674, 2009.
Laepple, T., Shakun, J., He, F., and Marcott, S.: Concerns of assuming linearity in the reconstruction of thermal maxima, Nature, 607, E12–E14, https://doi.org/10.1038/s41586-022-04831-w, 2022.
Levy, R. H., Meyers, S. R., Naish, T. R., Golledge, N. R., McKay, R. M., Crampton, J. S., DeConto, R. M., De Santis, L., Florindo, F., Gasson, E. G. W., Harwood, D. M., Luyendyk, B. P., Powell, R. D., Clowes, C., and Kulhanek, D. K.: Antarctic ice-sheet sensitivity to obliquity forcing enhanced through ocean connections, Nat. Geosci., 12, 132–137, https://doi.org/10.1038/s41561-018-0284-4, 2019.
Li, L. Y., Yongqiang, Tang, Y., Lin, P., Xie, J., Song, M., Dong, L., Zhou, T., Liu, L., Wang, L., Pu, Y., Chen, X., Chen, L., Xie, Z., Liu, H., Zhang, L., Huang, X., Feng, T., Zheng, W., Xia, K., Liu, H., Liu, J., Wang, Y., Wang, L., Jia, B., Xie, F., Wang, B., Zhao, S., Yu, Z., Zhao, B., and Wei, J.: The Flexible Global Ocean–Atmosphere–Land System Model Grid-Point Version 3 (FGOALS-g3): Description and Evaluation, J. Adv. Model. Earth Sy., 12, https://doi.org/10.1029/2019ms002012, 2020.
Lin, P., Zhao, B., Wei, J., Liu, H., Zhang, W., Chen, X., Jiang, J., Ding, M., Man, W., Jiang, J., Zhang, X., Ding, Y., Bai, W., Jin, C., Yu, Z., Li, Y., Zheng, W., and Zhou, T.: The Super-large Ensemble Experiments of CAS FGOALS-g3, Adv. Atmos. Sci., 39, 1746–1765, https://doi.org/10.1007/s00376-022-1439-1, 2022.
Liu, F., Du, J., Huang, E., Ma, W., Ma, X., Lourens, L. J., and Tian, J.: Accelerated marine carbon cycling forced by tectonic degassing over the Miocene Climate Optimum, Sci. Bull. (Beijing), 69, 823–832, https://doi.org/10.1016/j.scib.2023.12.052, 2024.
Lunt, D. J., Valdes, P. J., Haywood, A., and Rutt, I. C.: Closure of the Panama Seaway during the Pliocene: implications for climate and Northern Hemisphere glaciation, Clim. Dynam., 30, 1–18, https://doi.org/10.1007/s00382-007-0265-6, 2008.
Lunt, D. J., Haywood, A. M., Schmidt, G. A., Salzmann, U., Valdes, P. J., Dowsett, H. J., and Loptson, C. A.: On the causes of mid-Pliocene warmth and polar amplification, Earth Planet. Sc. Lett., 321–322, 128–138, https://doi.org/10.1016/j.epsl.2011.12.042, 2012.
Marsicek, J., Shuman, B. N., Bartlein, P. J., Shafer, S. L., and Brewer, S.: Reconciling divergent trends and millennial variations in Holocene temperatures, Nature, 554, 92–96, https://doi.org/10.1038/nature25464, 2018.
Milanković, M.: Canon of insolation and the ice-age problem Belgrade, 1941, Kanon der Erdbestrahlung und seine Anwendung auf das Eiszeitenproblem, Jerusalem, xxiii, 484 p., 1941.
Naish, T., Powell, R., Levy, R., Wilson, G., Scherer, R., Talarico, F., Krissek, L., Niessen, F., Pompilio, M., Wilson, T., Carter, L., DeConto, R., Huybers, P., McKay, R., Pollard, D., Ross, J., Winter, D., Barrett, P., Browne, G., Cody, R., Cowan, E., Crampton, J., Dunbar, G., Dunbar, N., Florindo, F., Gebhardt, C., Graham, I., Hannah, M., Hansaraj, D., Harwood, D., Helling, D., Henrys, S., Hinnov, L., Kuhn, G., Kyle, P., Laufer, A., Maffioli, P., Magens, D., Mandernack, K., McIntosh, W., Millan, C., Morin, R., Ohneiser, C., Paulsen, T., Persico, D., Raine, I., Reed, J., Riesselman, C., Sagnotti, L., Schmitt, D., Sjunneskog, C., Strong, P., Taviani, M., Vogel, S., Wilch, T., and Williams, T.: Obliquity-paced Pliocene West Antarctic ice sheet oscillations, Nature, 458, 322–328, https://doi.org/10.1038/nature07867, 2009.
Reichgelt, T., Baumgartner, A., Feng, R., and Willard, D. A.: Poleward amplification, seasonal rainfall and forest heterogeneity in the Miocene of the eastern USA, Global Planet. Change, 222, https://doi.org/10.1016/j.gloplacha.2023.104073, 2023.
Sarr, A.-C., Donnadieu, Y., Bolton, C. T., Ladant, J.-B., Licht, A., Fluteau, F., Laugié, M., Tardif, D., and Dupont-Nivet, G.: Neogene South Asian monsoon rainfall and wind histories diverged due to topographic effects, Nat. Geosci., 15, 314–319, https://doi.org/10.1038/s41561-022-00919-0, 2022.
Setty, S., Cramwinckel, M. J., van Nes, E. H., van de Leemput, I. A., Dijkstra, H. A., Lourens, L. J., Scheffer, M., and Sluijs, A.: Loss of Earth system resilience during early Eocene transient global warming events, Science Advances, 9, eade5466, https://doi.org/10.1126/sciadv.ade5466, 2023.
Steinthorsdottir, M., Coxall, H. K., de Boer, A. M., Huber, M., Barbolini, N., Bradshaw, C. D., Burls, N. J., Feakins, S. J., Gasson, E., Henderiks, J., Holbourn, A. E., Kiel, S., Kohn, M. J., Knorr, G., Kürschner, W. M., Lear, C. H., Liebrand, D., Lunt, D. J., Mörs, T., Pearson, P. N., Pound, M. J., Stoll, H., and Strömberg, C. A. E.: The Miocene: The Future of the Past, Paleoceanography and Paleoclimatology, 36, https://doi.org/10.1029/2020pa004037, 2021.
Tian, J., Yang, M., Lyle, M. W., Wilkens, R., and Shackford, J. K.: Obliquity and long eccentricity pacing of the Middle Miocene climate transition, Geochem. Geophy. Geosy., 14, 1740–1755, https://doi.org/10.1002/ggge.20108, 2013.
van Peer, T. E., Liebrand, D., Taylor, V. E., Brzelinski, S., Wolf, I., Bornemann, A., Friedrich, O., Bohaty, S. M., Xuan, C., Lippert, P. C., and Wilson, P. A.: Eccentricity pacing and rapid termination of the early Antarctic ice ages, Nat. Commun., 15, 10600, https://doi.org/10.1038/s41467-024-54186-1, 2024.
Wang, Y., Yu, Z., Lin, P., Liu, H., Jin, J., Li, L., Tang, Y., Dong, L., Chen, K., Li, Y., Yang, Q., Ding, M., Meng, Y., Zhao, B., Wei, J., Ma, J., and Sun, Z.: FGOALS-g3 Model Datasets for CMIP6 Flux-Anomaly-Forced Model Intercomparison Project, Adv. Atmos. Sci., 37, 1093–1101, https://doi.org/10.1007/s00376-020-2045-8, 2020.
Wei, J., Liu, H., Zhao, Y., Lin, P., Yu, Z., Li, L., Xie, J., and Duan, A.: Simulation of the climate and ocean circulations in the Middle Miocene Climate Optimum by a coupled model FGOALS-g3, Palaeogeogr. Palaeocl., 617, https://doi.org/10.1016/j.palaeo.2023.111509, 2023.
Westerhold, T., Marwan, N., Drury, A. J., Liebrand, D., Agnini, C., Anagnostou, E., Barnet, J. S. K., Bohaty, S. M., De Vleeschouwer, D., Florindo, F., Frederichs, T., Hodell, D. A., Holbourn, A. E., Kroon, D., Lauretano, V., Littler, K., Lourens, L. J., Lyle, M., Pälike, H., Röhl, U., Tian, J., Wilkens, R. H., Wilson, P. A., and Zachos, J. C.: An astronomically dated record of Earth's climate and its predictability over the last 66 million years, Science, 369, 1383–1387, https://doi.org/10.1126/science.aba6853, 2020.
Yin, Q. and Berger, A.: Individual contribution of insolation and CO2 to the interglacial climates of the past 800 000 years, Clim. Dynam., 38, 709–724, https://doi.org/10.1007/s00382-011-1013-5, 2012.
Yin, Q.: Insolation-induced mid-Brunhes transition in Southern Ocean ventilation and deep-ocean temperature, Nature, 494, 222–225, https://doi.org/10.1038/nature11790, 2013.
Zhang, Y.: Miocene_orb, OSF [data set], https://doi.org/10.17605/OSF.IO/ZRC48, 2025.
Zhang, Z., Ramstein, G., Schuster, M., Li, C., Contoux, C., and Yan, Q.: Aridification of the Sahara desert caused by Tethys Sea shrinkage during the Late Miocene, Nature, 513, 401–404, https://doi.org/10.1038/nature13705, 2014.
Zheng, W., Yu, Y., Luan, Y., Zhao, S., He, B., Dong, L., Song, M., Lin, P., and Liu, H.: CAS-FGOALS Datasets for the Two Interglacial Epochs of the Holocene and the Last Interglacial in PMIP4, Adv. Atmos. Sci., 37, 1034–1044, https://doi.org/10.1007/s00376-020-9290-8, 2020.
Short summary
This study examines how the warm Miocene (~23–5 Ma) climate responded to orbital changes compared with modern day. Simulations show weaker Miocene temperature responses with distinct spatial patterns. High latitudes were less sensitive due to weaker albedo feedback, while tropical Africa cooled more strongly from an enhanced water cycle. The Southern Ocean warmed under low insolation as winter sea ice shrank. These findings highlight how background climate states shape orbital climate responses.
This study examines how the warm Miocene (~23–5 Ma) climate responded to orbital changes...
