It is well established that greenhouse conditions prevailed during the Cretaceous Period (~
145–66 Ma). Determining the exact nature of the greenhouse-gas forcing, climatic warming …

Glycerol dialkyl glycerol tetraether (GDGT) lipids are membrane lipids which were long
thought to be synthesized mainly by archaea, organisms thought to be limited to extreme …

The development of methods using liquid chromatography coupled to mass spectrometry to
analyze glycerol dialkyl glycerol tetraethers (GDGTs) has substantially expanded the …

The distribution of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in soils has been
shown to correlate with the soil pH and the mean annual air temperature (MAT). This has …

TEX 86 is an important proxy for constraining ocean temperatures in the Earth's past.
Current calibrations, however, feature structured residuals indicative of a spatially-varying …

Soil-derived branched glycerol dialkyl glycerol tetraethers (brGDGTs) in marine river fan
sediments have a potential use for determining changes in the mean annual temperature …

In recent years, a novel proxy for the past occurrence of Arctic sea ice has been proposed
that is based on the variable marine sedimentary abundance of an organic geochemical …

Constraining the relationship between temperature and atmospheric concentrations of
carbon dioxide (p CO2) is essential to model near-future climate. Here, we reconstruct p …

Quantitative estimates of past temperature changes are a cornerstone of paleoclimatology.
For a number of marine sediment-based proxies, the accuracy and precision of past …

Thaumarchaeota are globally distributed and abundant microorganisms occurring in diverse
habitats and thus represent a major source of archaeal lipids. The scope of lipids as …