Earth System Diagnostics

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Past highlights:

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

On the Similarity and Apparent Cycles of Isotopic Variations in East Antarctic Snow-Pits

We explain why snow pits across different sites in East Antarctica show visually similar variations in water isotopes. We argue that the similarity and the apparent cycles of around 20 cm in the isotopic variations are the result of a seasonal cycle in isotopes, noise, for example from precipitation intermittency, and diffusion. The near constancy of the diffusion length across many ice-coring sites explains why the structure and cycle length is largely independent of the accumulation conditions.

Laepple, T., T. Münch, M. Casado, M. Hoerhold, A. Landais, and S. Kipfstuhl. 2017. “On the Similarity and Apparent Cycles of Isotopic Variations in East Antarctic Snow-Pits.” The Cryosphere Discuss. 2017 (September): 1–29. doi:10.5194/tc-2017-199.

Constraints on post-depositional isotope modifications in East Antarctic firn from analysing temporal changes of isotope profiles

Flat Meridional Temperature Gradient in the Early Eocene in the Subsurface Rather than Surface Ocean

Layering of surface snow and firn at Kohnen Station, Antarctica - noise or seasonal signal?

Assessing performance and seasonal bias of pollen-based climate reconstructions in a perfect model world

A two-dimensional view of water isotopes in Antarctic firn

Warmer and wetter or warmer and dryer? Observed versus simulated covariability of Holocene temperature and rainfall in Asia

Glacial cooling as inferred from marine temperature proxies TEXH86 and UK’37

Long-term winter warming trend in the Siberian Arctic during the mid- to late Holocene

Back from Antarctica

Ocean surface temperature variability: Large model–data differences at decadal and longer periods

Global and regional variability in marine surface temperatures

Appraisal of TEX86 and TEX86L thermometries in subpolar and polar regions

Similarity estimators for irregular and age-uncertain time series

Impurity controlled densification: new model for stratified polar firn

Core-scale radioscopic imaging: a new method reveals density– calcium link in Antarctic firn

A model–data comparison of the Holocene global sea surface temperature evolution

Reconciling discrepancies between Uk37 and Mg/Ca reconstructions of Holocene marine temperature variability