Articles | Volume 14, issue 12
Research article
 | Highlight paper
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

Data sets

Stable-isotope records from Dronning Maud Land, Antarctica W. Graf, H. Oerter, O. Reinwarth, W. Stichler, F. Wilhelms, H. Miller, and R. Mulvaney, R.

Stable water isotopes measured along two snow trenches sampled at Kohnen Station, Dronning Maud Land, Antarctica in the 2014/15 field season T. Münch, S. Kipfstuhl, J. Freitag, H. Meyer, H., and T. Laepple

West Antarctica Ice Core and Climate Model Data E. J. Steig

ERA-Interim Reanalysis, Monthly Means of Daily Means European Centre for Medium-Range Weather Forecasts

Model code and software

proxysnr: An R package to separate the common signal from local noise in climate proxy records using spectral analyses T. Münch

simproxyage: An R package to simulate age uncertainty in layer-counted climate proxy records T. Münch

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.