Articles | Volume 14, issue 12
https://doi.org/10.5194/cp-14-2053-2018
https://doi.org/10.5194/cp-14-2053-2018
Research article
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20 Dec 2018
Research article | Highlight paper |  | 20 Dec 2018

What climate signal is contained in decadal- to centennial-scale isotope variations from Antarctic ice cores?

Thomas Münch and Thomas Laepple

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Short summary
Proxy data on climate variations contain noise from many sources and, for reliable estimates, we need to determine those temporal scales at which the climate signal in the proxy record dominates the noise. We developed a method to derive timescale-dependent estimates of temperature proxy signal-to-noise ratios, which we apply and discuss in the context of Antarctic ice-core records but which in general are applicable to a large set of palaeoclimate records.