Synchronous Change of Atmospheric CO₂ and Antarctic Temperature During the Last Deglacial Warming
2013
Parrenin, F. | Masson-Delmotte, V. | Köhler, P. | Raynaud, D. | Paillard, D. | Schwander, J. | Barbante, C. | Landais, A. | Wegner, A. | Jouzel, J.
No Leader to Follow Changes in the concentration of atmospheric CO ₂ and surface air temperature are closely related. However, temperature can influence atmospheric CO ₂ as well as be influenced by it. Studies of polar ice cores have concluded that temperature increases during periods of rapid warming have preceded increases in CO ₂ by hundreds of years. Parrenin et al. (p. 1060; see the Perspective by Brook) present a revised age scale for the atmospheric component of Antarctic ice cores, based on the isotopic composition of the N ₂ that they contain, and suggest that temperature and CO ₂ changed synchronously over four intervals of rapid warming during the last deglaciation.
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