The DOI matches its Crossref record; 76 of the 76 references it cites were found in a registry or an index.
Causes of ice age intensification across the Mid-Pleistocene Transition
Open accessAbstract
Significance: Conflicting sets of hypotheses highlight either the role of ice sheets or atmospheric carbon dioxide (CO 2 ) in causing the increase in duration and severity of ice age cycles ∼1 Mya during the Mid-Pleistocene Transition (MPT). We document early MPT CO 2 cycles that were smaller than during recent ice age cycles. Using model simulations, we attribute this to post-MPT increase in glacial-stage dustiness and its effect on Southern Ocean productivity. Detailed analysis reveals the importance of CO 2 climate forcing as a powerful positive feedback that magnified MPT climate change originally triggered by a change in ice sheet dynamics. These findings offer insights into the close coupling of climate, oceans, and ice sheets within the Earth System.
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Cites
A Pliocene‐Pleistocene stack of 57 globally distributed benthic δ18O records
Lisiecki, L. E., & Raymo, M. E. (2005) · Paleoceanography · doi:10.1029/2004pa001071 · Cited by 7,377
Function minimization by conjugate gradients
Fletcher, R. (1964) · The Computer Journal · doi:10.1093/comjnl/7.2.149 · Cited by 4,939
Powell, M. J. D. (1964) · The Computer Journal · doi:10.1093/comjnl/7.2.155 · Cited by 4,632
Algorithms for Minimization Without Derivatives
G., D., & Brent, R. P. (1974) · Mathematics of Computation · doi:10.2307/2005713 · Cited by 2,847
(2025) · Elsevier eBooks · doi:10.1016/c2020-1-04096-5 · Cited by 2,738
A Pliocene‐Pleistocene stack of 57 globally distributed benthic δ18O records
Lisiecki, L. E., & Raymo, M. E. (2005) · eScholarship (California Digital Library) · Cited by 2,396
Takahashi, T., Sutherland, S. C., Wanninkhof, R., Sweeney, C., Feely, R. A., Chipman, D. W., Hales, B., Friederich, G., Chavez, F., Sabine, C., et al. (2009) · Deep Sea Research Part II: Topical Studies in Oceanography · doi:10.1016/j.dsr2.2008.12.009 · Cited by 2,346
Macintosh Program performs time‐series analysis
Paillard, D., Labeyrie, L., & Yiou, P. (1996) · Eos, Transactions American Geophysical Union · doi:10.1029/96eo00259 · Cited by 2,074
Clark, P. U., Archer, D., Pollard, D., Blum, J. D., Rial, J. A., Brovkin, V., Mix, A. C., Pisias, N. G., & Roy, M. (2006) · Quaternary Science Reviews · doi:10.1016/j.quascirev.2006.07.008 · Cited by 1,239
Algorithms for minimization without derivatives
Anderson, D. (1974) · IEEE Transactions on Automatic Control · doi:10.1109/tac.1974.1100629 · Cited by 1,209
Cited by
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., et al. (2020) · Science · doi:10.1126/science.aba6853 · Cited by 1,946
Self-citationAn Assessment of Earth's Climate Sensitivity Using Multiple Lines of Evidence
Sherwood, S. C., Webb, M. J., Annan, J. D., Armour, K. C., Forster, P. M., Hargreaves, J. C., Hegerl, G., Klein, S. A., Marvel, K. D., Rohling, E. J., et al. (2020) · Reviews of Geophysics · doi:10.1029/2019rg000678 · Cited by 1,254
Self-citationThe configuration of Northern Hemisphere ice sheets through the Quaternary
Batchelor, C. L., Margold, M., Krapp, M., Murton, D. K., Dalton, A. S., Gibbard, P. L., Stokes, C. R., Murton, J. B., & Manica, A. (2019) · Nature Communications · doi:10.1038/s41467-019-11601-2 · Cited by 484
Atmospheric CO2 over the Past 66 Million Years from Marine Archives
Rae, J. W. B., Zhang, Y. G., Liu, X., Foster, G. L., Stoll, H. M., & Whiteford, R. D. M. (2021) · Annual Review of Earth and Planetary Sciences · doi:10.1146/annurev-earth-082420-063026 · Cited by 419
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Metadata
- Authors
- Chalk, T. B., Hain, M. P., Foster, G. L., Rohling, E. J., Sexton, P. F., Badger, M. P. S., Cherry, S. G., Hasenfratz, A. P., Haug, G. H., Jaccard, S. L., Martínez-García, A., Pälike, H., Pancost, R. D., & Wilson, P. A.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2017-11-27
- Volume
- 114
- Issue
- 50
- Pages
- 13114-13119
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2770541382
- Cited by
- 326
- References
- 76
- FWCI
- 13.08
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Chalk, T. B., Hain, M. P., Foster, G. L., Rohling, E. J., Sexton, P. F., Badger, M. P. S., Cherry, S. G., Hasenfratz, A. P., Haug, G. H., Jaccard, S. L., Martínez-García, A., Pälike, H., Pancost, R. D., & Wilson, P. A. (2017). Causes of ice age intensification across the Mid-Pleistocene Transition. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1702143114
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