Personal profile
Research overview
I am a paleoceanographer who specialises in the application of foraminiferal isotopic (δ13C, δ18O, δ11B) and trace element (Mg/Ca, B/Ca) proxies to understand the evolution of Earth's climate and carbon cycle in the geological past. I have acquired a particular interest and expertise in Late Cretaceous (Maastrichtian) and early Paleogene (Paleocene-Eocene) climate change and carbon-cycling.
I am working with Dr James Rae within the St Andrews Isotope Group (STAiG). My current active project involves creating orbital-resolution trace element and δ11B records spanning the past 100 million years from multiple deep-ocean sediment cores recovered from the Atlantic, Pacific, Indian and Southern oceans. I am also co-supervising two Masters projects with Prof. Dick Kroon focused on applying trace element proxies at higher resolution to understand climate change and ocean acidification during the late Maastrichtian warming event and early Paleocene Dan-C2 event.
Education/Academic qualification
Doctor of Philosophy, Investigating Climate Change and Carbon Cycling during the Latest Cretaceous to Paleogene (~67–52 million years ago); new geochemical records from the South Atlantic and Indian oceans, University of Exeter
22 Sept 2014 → 10 Dec 2018
Award Date: 10 Dec 2018
Master of Science, Master of Geology (MGeol), University of Leeds
2004 → 2008
Award Date: 25 Jun 2008
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 13 Climate Action
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SDG 14 Life Below Water
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SDG 15 Life on Land
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Collaborations and top research areas from the last five years
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Eocene gastropods of the New Forest, UK
Barnet, J., 1 Feb 2025, In: Geology Today. 41, 1, p. 26-37 14 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile -
How tiny foraminifera can play a massive role in understanding past climates
Barnet, J. S. K., 1 Apr 2025, In: Geology Today. 41, 2, p. 71-78 8 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile -
Can a 62 million-year-old ‘hyperthermal’ event hold the clues to our uncertain future climate?
Barnet, J. S. K., 26 Nov 2024, In: Geology Today. 40, 6, p. 228-235 8 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile -
Geological evolution of the Hampshire Basin (southern England) during a global climate transition from ‘hothouse’ to ‘coolhouse’ in the Palaeogene
Barnet, J. S. K., 29 Mar 2023, In: Geology Today. 39, 2, p. 54-61 8 p.Research output: Contribution to journal › Article › peer-review
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Warming, acidification, and calcification feedback during the first hyperthermal of the Cenozoic—The Latest Danian Event
Harbich, M., Barnet, J. S. K., Rae, J. W. B. & Kroon, D., 7 Nov 2023, (E-pub ahead of print) In: Geology. Early View, 5 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile
Datasets
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Cenozoic clumped isotope temperature record from the deep North Atlantic
Meckler, A. N. (Contributor), Sexton, P. F. (Contributor), Piasecki, A. (Contributor), Leutert, T. J. (Contributor), Marquardt, J. (Contributor), Ziegler, M. (Contributor), Agterhuis, T. (Contributor), Lourens, L. J. (Contributor), Rae, J. W. B. (Contributor), Barnet, J. (Contributor), Tripati, A. (Contributor) & Bernasconi, S. M. (Contributor), PANGAEA, 2022
Dataset
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Trace element ratios and derived carbonate chemistry, borate chemistry, and sea surface temperature from planktic and benthic foraminifera at ODP Site 208-1262 during the Latest Danian Event
Harbich, M. (Contributor), Barnet, J. (Contributor) & Rae, J. W. B. (Contributor), PANGAEA, 14 Dec 2023
Dataset