During the late Pleistocene epoch, proxies for Southern Hemisphere climate from the Antarctic ice cores vary nearly in phase with Northern Hemisphere insolation intensity at the precession and obliquity timescales. This coherence has led to the suggestion that Northern Hemisphere insolation controls Antarctic climate. However, it is unclear what physical mechanisms would tie southern climate to northern insolation. Here we call on radiative equilibrium estimates to show that Antarctic climate could instead respond to changes in the duration of local summer. Simple radiative equilibrium dictates that warmer annual average atmospheric temperatures occur as a result of a longer summer, as opposed to a more intense one, because temperature is more sensitive to insolation when the atmosphere is cooler. Furthermore, we show that a single-column atmospheric model reproduces this radiative equilibrium effect when forced exclusively by local Antarctic insolation, generating temperature variations that are coherent and in phase with proxies of Antarctic atmospheric temperature and surface conditions. We conclude that the duration of Southern Hemisphere summer is more likely to control Antarctic climate than the intensity of Northern Hemisphere summer with which it (often misleadingly) covaries. In our view, near interhemispheric climate symmetry at the obliquity and precession timescales arises from a northern response to local summer intensity and a southern response to local summer duration.
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Hays, J. in Antarctic Glacial History and World Palaeoenvironments (ed. Van Zinderen Bakker, E.) 57–71 (A.A. Balkema, Rotterdam, 1978).
Imbrie, J. et al. On the structure and origin of major glaciation cycles. 1. Linear responses to Milankovitch forcing. Paleoceanography 7, 701–738 (1992).
Lorius, C. et al. A 150, 000-year climatic record from Antarctic ice. Nature 316, 591–596 (1985).
Petit, J. et al. Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica. Nature 399, 429–436 (1999).
Masson, V. et al. Holocene climate variability in Antarctica based on 11 ice-core isotopic records. Quat. Res. 54, 348–358 (2000).
Jouzel, J. et al. Orbital and millennial Antarctic climate variability over the past 800,000 years. Science 317, 793–796 (2007).
Kawamura, K. et al. Northern Hemisphere forcing of climatic cycles in Antarctica over the past 360,000 years. Nature 448, 912–916 (2007).
Alley, R., Brook, E. & Anandakrishnan, S. A northern lead in the orbital band: North–south phasing of Ice-Age events. Quat. Sci. Rev. 21, 431–441 (2002).
Barrows, T., Juggins, S., De Deckker, P., Calvo, E. & Pelejero, C. Long-term sea surface temperature and climate change in the Australian–New Zealand region. Paleoceanography 22, 1–17 (2007).
Imbrie, J. et al. On the structure and origin of major glaciation cycles.2. The 100,000-year cycle. Paleoceanography 8, 699–735 (1993).
Gildor, H. & Tziperman, E. Physical mechanisms behind biogeochemical glacial–interglacial CO2 variations. Geophys. Res. Lett. 28, 2421–2424 (2001).
Mercer, J. in Climate Processes and Climate Sensitivity Vol. 29 (ed. Ewing, M.) 307–313 (Geophysical Monograph, American Geophysical Union, 1984).
Charles, C., Lynch-Stieglitz, J., Ninnemann, U. & Fairbanks, R. Climate connections between the hemisphere revealed by deep sea sediment core/ice core correlations. Earth Planet. Sci. Lett. 142, 19–27 (1996).
Bard, E., Rostek, F. & Songzogni, C. Interhemispheric synchrony of the last deglaciation inferred from alkenone palaeothermometry. Nature 385, 707–710 (1997).
Broecker, W. & Henderson, G. The sequence of events surrounding Termination II and their implications for the cause of glacial–interglacial CO2 changes. Paleoceanography 13, 352–364 (1998).
Huybers, P. & Curry, W. Links between the annual, Milankovitch, and continuum of climate variability. Nature 441, 329–332 (2006).
Huybers, P Early Pleistocene glacial cycles and the integrated summer insolation forcing. Science 313, 508–511 (2006).
Kukla, J. Missing link between Milankovitch and climate. Nature 253, 600–603 (1975).
Milankovitch, M. Kanon der Erdbestrahlung und seine Andwendung auf das Eiszeitenproblem (Royal Serbian Academy, Belgrade, 1941).
Rubincam, D. Black body temperature, orbital elements, the Milankovitch precession index, and the Seversmith psychroterms. Theor. Appl. Climatol. 79, 111–131 (2004).
Kim, S., Crowley, T. & Stossel, A. Local orbital forcing of Antarctic climate change during the last interglacial. Science 280, 728–730 (1998).
Stott, L., Timmermann, A & Thunell, R. Southern Hemisphere and deep-sea warming led deglacial atmospheric CO2 rise and tropical warming. Science 318, 435–438 (2007).
Hack, J., Truesdale, J., Pedretti, J. & Petch, J. SCAM user’s guide. <http://www.ccsm.ucar.edu/models/atm-cam/docs/scam/> (2004).
Collins, W. et al. The formulation and atmospheric simulation of the community atmosphere model version 3 (CAM3). J. Clim. 19, 2144–2161 (2006).
Hudson, S. & Brandt, R. A look at the surface-based temperature inversion on the Antarctic Plateau. J. Clim. 18, 1673–1696 (2005).
Vimeux, F., Cuffey, K. & Jouzel, J. New insights into Southern Hemisphere temperature changes from Vostok ice cores using deuterium excess correction. Earth Planet. Sci. Lett. 203, 829–843 (2002).
Van Lipzig, N., Van Meijgaard, E. & Oerlemans, J. The effect of temporal variations in the surface mass balance and temperature-inversion strength on the interpretation of ice-core signals. J. Glaciol. 48, 611–621 (2002).
Bender, M. Orbital tuning chronology for the Vostok climate record supported by trapped gas composition. Earth Planet. Sci. Lett. 204, 275–289 (2002).
Gildor, H. & Ghil, M. Phase relations between climate proxy records: Potential effect of seasonal precipitation changes. Geophys. Res. Lett. 29, 1–4 (2002).
Wolff, E. W. et al. Southern Ocean sea-ice extent, productivity and iron flux over the past eight glacial cycles. Nature 440, 491–496 (2006).
Siegenthaler, U. et al. Stable carbon cycle–climate relationship during the late Pleistocene. Science 310, 1313–1317 (2005).
Lüthi, D. et al. High-resolution carbon dioxide concentration record 650,000–800,000 years before present. Nature 453, 379–382 (2008).
Stephens, B. & Keeling, R. The influence of Antarctic sea ice on glacial–interglacial CO2 variations. Nature 404, 171–174 (2000).
Sigman, D. & Boyle, E. Palaeoceanography: Antarctic stratification and glacial CO2 . Nature 412, 605–606 (2001).
Imbrie, J. & Imbrie, J. Modeling the climatic response to orbital variations. Science 207, 943–953 (1980).
Roe, G. In defense of Milankovitch. Geophys. Res. Lett. 33, 1–4 (2006).
Adhémar, J. A. Révolutions de la Mer: Déluges Períodiques (Carilian-Goeury et V. Dalmont, Paris, 1842).
Denton, G. & Hughes, T. Reconstructing the Antarctic Ice Sheet at the Last Glacial Maximum. Quat. Sci. Rev. 21, 193–202 (2002).
Henderson, G. & Slowey, N. Evidence from U–Th dating against Northern Hemisphere forcing of the penultimate deglaciation. Nature 404, 61–66 (2000).
Parrenin, F., Jouzel, J., Waelbroeck, C., Ritz, C. & Barnola, J. Dating the Vostok ice core by an inverse method. J. Geophys. Res. 106(D23), 31837–31851 (2001).
Shackleton, N. J. The 100,000-year ice-age cycle identified and found to lag temperature, carbon dioxide, and orbital eccentricity. Science 289, 1897–1902 (2000).
Schulz, K. & Zeebe, R. Pleistocene glacial terminations triggered by synchronous changes in Southern and Northern Hemisphere insolation: The insolation canon hypothesis. Earth Planet. Sci. Lett. 249, 326–336 (2006).
Kalnay, E. et al. The NCEP/NCAR 40-year reanalysis project. Bull. Am. Meteorol. Soc. 77, 437–471 (1996).
Hines, K., Grumbine, R. W., Bromwich, D. & Cullather, R. Surface energy balance of the NCEP MRF and NCEPNCAR reanalysis in Antarctic latitudes during FROST. Weath. Forecast. 14, 851–866 (1999).
Joussaume, S. & Braconnot, P. Sensitivity of paleoclimate simulation results to season definitions. J. Geophys. Res. 102, 1943–1956 (1997).
Vimeux, F., Masson, V., Jouzel, J., Stievenard, M. & Petit, J. Glacial–interglacial changes in ocean surface conditions in the Southern Hemisphere. Nature 398, 410–413 (1999).
Berger, A. & Loutre, M. F. Astronomical solutions for paleoclimate studies over the last 3 million years. Earth Planet. Sci. Lett. 111, 369–382 (1992).
This manuscript benefited from comments by R. Alley, D. Barrell, P. Blossey, I. Eisenman, J. Gebbie, A. Giese, K. Kawamura, R. Pierrehumbert, A. Stine and J. Severinghaus. We are also grateful to K. Kawamura for providing the δO2/N2 record and to C. Walker and D. Abbot for technical assistance. P.H. received support from the Comer Science and Education Foundation (CSEF) and NSF award 0645936. G.D. is supported by NOAA and CSEF.
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Huybers, P., Denton, G. Antarctic temperature at orbital timescales controlled by local summer duration. Nature Geosci 1, 787–792 (2008) doi:10.1038/ngeo311
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