High-resolution marine data and transient simulations support orbital forcing of ENSO amplitude since the mid-Holocene

M Carré, P Braconnot, M Elliot, R D'agostino… - Quaternary Science …, 2021 - Elsevier
Lack of constraint on spatial and long-term temporal variability of the El Niño southern
Oscillation (ENSO) and its sensitivity to external forcing limit our ability to evaluate climate …

Emerging biological archives can reveal ecological and climatic change in Antarctica

JM Strugnell, HV McGregor, NG Wilson… - Global Change …, 2022 - Wiley Online Library
Anthropogenic climate change is causing observable changes in Antarctica and the
Southern Ocean including increased air and ocean temperatures, glacial melt leading to sea …

A new view on abrupt climate changes and the bipolar seesaw based on paleotemperatures from Iberian Margin sediments

N Davtian, E Bard - … of the National Academy of Sciences, 2023 - National Acad Sciences
The last glacial cycle provides the opportunity to investigate large changes in the Atlantic
Meridional Overturning Circulation (AMOC) beyond the small fluctuations evidenced from …

[HTML][HTML] Evaluating isoprenoidal hydroxylated GDGT-based temperature proxies in surface sediments from the global ocean

D Varma, EC Hopmans, ZR van Kemenade… - … et Cosmochimica Acta, 2024 - Elsevier
Recently developed temperature proxies based on hydroxylated isoprenoid Glycerol Dialkyl
Glycerol Tetraethers (OH-isoGDGTs), such as% OH, R IO H, R IO H′ and OHC, have …

Habitat selection of southern giant petrels: potential environmental monitors of the Antarctic Peninsula

JVG Finger, L Krüger, DH Corá, MV Petry - Antarctic Science, 2023 - cambridge.org
The southern giant petrel (Macronectes giganteus) is a widely distributed top predator of the
Southern Ocean. To define the fine-scale foraging areas and habitat use of Antarctic …

Biomarker proxies for reconstructing Quaternary climate and environmental change

EL McClymont, H Mackay… - Journal of …, 2023 - Wiley Online Library
To reconstruct past environmental changes, a range of indirect or proxy approaches can be
applied to Quaternary archives. Here, we review the complementary and novel insights that …

The Impact of Different Atmospheric CO2 Concentrations on Large Scale Miocene Temperature Signatures

A Hossain, G Knorr, W Jokat… - Paleoceanography …, 2023 - Wiley Online Library
Based on inferences from proxy records the Miocene (23.03–5.33 Ma) was a time of
amplified polar warmth compared to today. However, it remains a challenge to simulate a …

Constraining water depth influence on organic paleotemperature proxies using sedimentary archives

D Varma, K Hättig, MTJ van der Meer… - Paleoceanography …, 2023 - Wiley Online Library
The TEX86 paleothermometer has been extensively used to reconstruct past sea water
temperatures, but it remains unclear which export depths the proxy represents. Here we …

Antarctic sea ice over the past 130 000 years–part 1: a review of what proxy records tell us

X Crosta, KE Kohfeld, HC Bostock… - Climate of the …, 2022 - cp.copernicus.org
Antarctic sea ice plays a critical role in the Earth system, influencing energy, heat and
freshwater fluxes, air–sea gas exchange, ice shelf dynamics, ocean circulation, nutrient …

The Novel Hydroxylated Tetraether Index RI‐OH′ as a Sea Surface Temperature Proxy for the 160‐45 ka BP Period Off the Iberian Margin

N Davtian, E Bard, S Darfeuil, G Ménot… - Paleoceanography …, 2021 - Wiley Online Library
Abstract RI‐OH′ and RI‐OH (ring index of hydroxylated tetraethers) are two novel organic
paleothermometers which could either complement or replace more established …