Results 41 to 50 of about 1,711 (160)

Impact of non-thermal variables on hydroxylated GDGT distributions around Iceland

open access: yesFrontiers in Earth Science
Archaeal isoprenoid glycerol dibiphytanyl glycerol tetraethers (GDGTs) preserved in sediments are popular tools for the reconstruction of past temperature in the global ocean. Whereas the most common GDGTs have been well studied through environmental and
David J. Harning   +2 more
doaj   +1 more source

(Table 2) Branched GDGTs in core lipid fractions of lakes in Minnesota and Iowa

open access: yes, 2013
(Table 2) Branched GDGTs in core lipid fractions of lakes in Minnesota and ...
Downing, John A   +11 more
core   +1 more source

Asynchronous Changes in Tempo‐Spatial Patterns of the Younger Dryas Hydroclimate in Northeastern China

open access: yesGeophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract The Younger Dryas (YD, 12,900–11,700 years before present) event offers a key opportunity to investigate climate system responses to abrupt perturbations, yet regional hydroclimate responses in northeastern China remain debated. Here we reconstruct the spatial fingerprint of YD hydroclimate variability using a comprehensive fossil pollen data ...
Sihan Sun   +6 more
wiley   +1 more source

Seasonality of archaeal lipid flux and GDGT-based thermometry in sinking particles of high-latitude oceans: Fram Strait (79° N) and Antarctic Polar Front (50° S) [PDF]

open access: yesBiogeosciences, 2019
The relative abundance of individual archaeal membrane lipids, namely of glycerol dialkyl glycerol tetraethers (GDGTs) with different numbers of cyclopentane rings, varies with temperature, which enables their use as a paleotemperature proxy index.
E. Park   +13 more
doaj   +1 more source

An Early Miocene Lowland on the Northeastern Tibetan Plateau

open access: yesFrontiers in Earth Science, 2021
The northeastern Tibetan Plateau (NE TP) has long been thought to be the last part of the Plateau to be raised, but this assumption has been challenged by recent analyses of fossil leaf energy, which have pointed to the possibility that the present ...
Qian Tian   +7 more
doaj   +1 more source

(Table 3) Branched GDGTs in intact polar lipid fractions of lakes in Minnesota and Iowa

open access: yes, 2013
(Table 3) Branched GDGTs in intact polar lipid fractions of lakes in Minnesota and ...
Downing, John A   +11 more
core   +1 more source

LIPOTHERM: A Calibration Framework for GDGT Paleothermometry Based on Machine Learning

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract SST reconstruction from glycerol dialkyl glycerol tetraethers (GDGT) preserved in marine sediments is an important tool in quantitative paleoclimatology. These reconstructions require calibration frameworks that provide mapping between sediment GDGT data and temperature values.
Vikash Kumar   +2 more
wiley   +1 more source

Distribution of tetraether lipids in agricultural soils – differentiation between paddy and upland management [PDF]

open access: yesBiogeosciences, 2016
Rice paddies constitute almost a fifth of global cropland and provide more than half of the world's population with staple food. At the same time, they are a major source of methane and therewith significantly contribute to the current warming of Earth's
C. Mueller-Niggemann   +5 more
doaj   +1 more source

AllIGATR: A Multi‐Dimensional Approach for Marine Archaeal Lipid‐Based Paleothermometry

open access: yesPaleoceanography and Paleoclimatology, Volume 41, Issue 10, October 2026.
Abstract Archaeal glycerol dibiphytanyl glycerol tetraether membrane lipids (GDGTs) are ubiquitous in marine sediments. The number of ring structures in six specific GDGTs varies with seawater temperature, leading to their use in paleothermometry. GDGT temperature dependence is typically quantified in TEX86.
Addison Rice   +4 more
wiley   +1 more source

Different GDGTs and Methane Index from literature

open access: yes, 2011
Different GDGTs and Methane Index from ...
Li, Li   +11 more
core   +1 more source

Home - About - Disclaimer - Privacy