Articles | Volume 18, issue 6
https://doi.org/10.5194/cp-18-1321-2022
https://doi.org/10.5194/cp-18-1321-2022
Research article
 | 
21 Jun 2022
Research article |  | 21 Jun 2022

Improving temperature reconstructions from ice-core water-isotope records

Bradley R. Markle and Eric J. Steig

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Cited articles

Bailey, A., Singh, H. K., and Nusbaumer, J.: Evaluating a Moist Isentropic Framework for Poleward Moisture Transport: Implications for Water Isotopes over Antarctica, Geophys. Res. Lett., 46, 7819–7827, https://doi.org/10.1029/2019GL082965, 2019. a, b, c, d
Bakhshaii, A. and Stull, R.: Saturated Pseudoadiabats-A Noniterative Approximation, J. Appl. Meteorol. Climatol., 52, 5–15, 2013. a
Barkan, E. and Luz, B.: High precision measurements of 17O/16O and 18O/16O ratios in H2O, Rapid Commun. Mass Spect., 19, 3737–3742, 2005. a
Barkan, E. and Luz, B.: Diffusivity fractionations of H216O/H 217O and H216O/H218O in air and their implications for isotope hydrology, Rapid Commun. Mass Spect., 21, 2999–3005, 2007. a, b
Benetti, M., Steen-Larsen, H. C., Reverdin, G., Sveinbjörnsdóttir, Á. E., Aloisi, G., Berkelhammer, M. B., Bourlès, B., Bourras, D., De Coetlogon, G., Cosgrove, A., Faber, A.-K., Grelet, J., Hansen, S. B., Johnson, R., Legoff, H., Martin, N., Peters, A. J., Popp, T. J., Reynaud, T., and Winther, M.: Stable isotopes in the atmospheric marine boundary layer water vapour over the Atlantic Ocean, 2012–2015, Sci. Data, 4, 1–17, 2017. a, b, c
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Short summary
The geochemistry preserved in polar ice can provide detailed histories of Earth’s climate over millennia. Here we use the stable isotope ratios of ice from many Antarctic ice cores to reconstruct temperature variability of Antarctica and the midlatitude Southern Hemisphere over tens of thousands of years. We improve upon existing methods to estimate temperature from the geochemical measurements and investigate the patterns of climate change in the past.