Alan D. Foreman

Alan D. Foreman

@climatearchivist.bsky.social

Postdoctoral Researcher at the Max Planck Institute for Chemistry Mainz, Germany Martinez-Garcia Laboratory - Organic Isotope Geochemistry Avid diver, surfer, occasional (middling) triathlete

168 followers144 following14 posts

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Alan D. Foreman
@climatearchivist.bsky.social

Hot off the (e-)press, a study in Science led by Nic Duprey showing that the variability of the world's largest Oxygen Deficient Zone over the last 80 years is tightly linked to Pacific Decadal Variability: www.science.org/doi/10.1126/...

science.orgDecadal oscillations in the ocean’s largest oxygen-deficient zoneThe impact of global warming on the ocean’s oxygen-deficient zones (ODZs) is uncertain, partly because of a lack of data on past changes. We report monthly resolved records of coral skeleton–bound nit...

Alan D. Foreman reposted

Nature Geoscience
@natgeosci.nature.com

⚒️ December editorial: Tightening the 𝘚𝘢𝘳𝘨𝘢𝘴𝘴𝘶𝘮 belt - on the content in this issue on the Great Atlantic 𝘚𝘢𝘳𝘨𝘢𝘴𝘴𝘶𝘮 Belt (in thread) www.nature.com/articles/s41... (1/4)

nature.comTightening the Sargassum belt - Nature GeoscienceA belt of seaweed has formed across the tropical Atlantic nearly every year since 2011, despite reduction in its extent elsewhere. The causes of this growth are now coming into clearer focus.

Alan D. Foreman reposted

Jesse Farmer
@jfarmersalmanac.bsky.social

Huge paper for the Arctic Ocean published today in @science.org - a new 30,000 year history of Arctic Ocean sea-ice cover reconstructed from the accumulation of cosmic dust-derived helium-3! www.science.org/doi/10.1126/... (1/n)

science.orgCosmic dust reveals dynamic shifts in central Arctic sea-ice coverage over the past 30,000 yearsArctic sea-ice loss affects biological productivity, sustenance in coastal communities, and geopolitics. Forecasting these impacts requires mechanistic understanding of how Arctic sea ice responds to ...
Alan D. Foreman
@climatearchivist.bsky.social

Another cool paper coming out of @amglab.bsky.social. Led by Tanja Wald, here we present basin-wide profiles of Mediterranean nitrate N/O isotopes, and show that this distribution can be explained by a combination of nitrogen fixation and anthropogenic nitrogen deposition: dx.doi.org/10.1029/2023...

dx.doi.orgOrigins of the Nitrate 15N Depletion in the Mediterranean SeaBasin-wide depth profiles of nitrate δ15N and δ18O indicate a supply of low-δ15N N to the Mediterranean Sea Nitrate δ15N can be explained by modest rates of N2 fixation and/or anthropogenic N dep...
Alan D. Foreman
@climatearchivist.bsky.social

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Alan D. Foreman@climatearchivist.bsky.social

Check out this exciting application of N isotopes from colleagues Tina Lüdecke and Jen Leichliter (@jenniferleichliter.bsky.social) and others just out in Science: Australopithecus at Sterkfontein did not consume substantial mammalian meat www.science.org/doi/10.1126/...

science.orgAustralopithecus at Sterkfontein did not consume substantial mammalian meatIncorporation of animal-based foods into early hominin diets has been hypothesized to be a major catalyst of many important evolutionary events, including brain expansion. However, direct evidence of ...
Alan D. Foreman
@climatearchivist.bsky.social

Last, a set of observations detailing a massive cold-bleaching and mortality event of mesophotic reefs that we observed in 2023 onboard S/Y Acadia at Clipperton Atoll in the Eastern Tropical Pacific: www.sciencedirect.com/science/arti...

sciencedirect.comSevere cold-water bleaching of a deep-water reef underscores future challenges for Mesophotic Coral EcosystemsElevated sea surface temperatures are causing an increase in coral bleaching events worldwide, and represent an existential threat to coral reefs. Ear…
Alan D. Foreman
@climatearchivist.bsky.social

We've had a couple cool things come out of the lab lately, and I wanted to share. First, check out this paper from Jon Jung et al. in Nature showing geochemical evidence for coral symbiosis on Devonian reefs: www.nature.com/articles/s41...

nature.comCoral photosymbiosis on Mid-Devonian reefs - NatureNitrogen isotope evidence of Mid-Devonian photosymbiotic associations in certain types of corals suggests that autotrophic and heterotrophic corals co-existed on extinct reefs, as today, but in w...

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