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ClimateQuiet 11d · day 12

Study reframes Atlantic current as a 'heat valve' controlling global heat storage

A Nature Geoscience paper led by Christo Buizert finds the AMOC governs how much heat Earth retains, not just how it's redistributed — with implications for today's weakening current.

newest coverage 11d agosummary written 11d ago6 pieces1 likes & upvotes NewswiresGoogle NewsMastodon

What to know

  • A Nature Geoscience study led by Christo Buizert reframes the AMOC as a 'heat valve' governing global ocean heat storage, not just a conveyor redistributing heat between hemispheres.
  • The model resolves a long-standing mismatch between rapid Greenland and slower Antarctic ice-core signals during past abrupt climate events.
  • The AMOC is currently weakening due to human-caused climate change, and researchers warn of a threshold beyond which this weakening could become self-reinforcing and irreversible.
  • Coverage so far is limited to a single ScienceAlert report and its syndication, with no independent commentary or debate yet in the evidence.

“ocean heat valve”

Buizert et al., Study authors · Nature Geoscience study, via ScienceAlert ↗ · Sep 11

Christo Buizert Lead study author

Study reframes Atlantic current as a 'heat valve' controlling global heat storage
ScienceAlert

How it unfolded 2 developments, newest first · click a bar or a number to jump articlesposts

Peak 3 pieces in 3h at Sep 12, 3 AM; 6 pieces over 12 days (3 articles · 3 posts) Sep 12, 3 AM — 3 pieces · 3 articles — Google News 2, Newswires 1Sep 12, 6 AM — 1 piece · 1 post — Mastodon 1Sep 12, 9 AM — quietSep 12, 12 PM — 1 piece · 1 post — Mastodon 1Sep 12, 3 PM — quietSep 12, 6 PM — quietSep 12, 9 PM — quietSep 13, 12 AM — quietSep 13, 3 AM — 1 piece · 1 post — Mastodon 1Sep 13, 6 AM — quietSep 13, 9 AM — quietSep 13, 12 PM — quietSep 13, 3 PM — quietSep 13, 6 PM — quietSep 13, 9 PM — quietSep 14, 12 AM — quietSep 14, 3 AM — quietSep 14, 6 AM — quietSep 14, 9 AM — quietSep 14, 12 PM — quietSep 14, 3 PM — quietSep 14, 6 PM — quietSep 14, 9 PM — quietSep 15, 12 AM — quietSep 15, 3 AM — quietSep 15, 6 AM — quietSep 15, 9 AM — quietSep 15, 12 PM — quietSep 15, 3 PM — quietSep 15, 6 PM — quietSep 15, 9 PM — quietSep 16, 12 AM — quietSep 16, 3 AM — quietSep 16, 6 AM — quietSep 16, 9 AM — quietSep 16, 12 PM — quietSep 16, 3 PM — quietSep 16, 6 PM — quietSep 16, 9 PM — quietSep 17, 12 AM — quietSep 17, 3 AM — quietSep 17, 6 AM — quietSep 17, 9 AM — quietSep 17, 12 PM — quietSep 17, 3 PM — quietSep 17, 6 PM — quietSep 17, 9 PM — quietSep 18, 12 AM — quietSep 18, 3 AM — quietSep 18, 6 AM — quietSep 18, 9 AM — quietSep 18, 12 PM — quietSep 18, 3 PM — quietSep 18, 6 PM — quietSep 18, 9 PM — quietSep 19, 12 AM — quietSep 19, 3 AM — quietSep 19, 6 AM — quietSep 19, 9 AM — quietSep 19, 12 PM — quietSep 19, 3 PM — quietSep 19, 6 PM — quietSep 19, 9 PM — quietSep 20, 12 AM — quietSep 20, 3 AM — quietSep 20, 6 AM — quietSep 20, 9 AM — quietSep 20, 12 PM — quietSep 20, 3 PM — quietSep 20, 6 PM — quietSep 20, 9 PM — quietSep 21, 12 AM — quietSep 21, 3 AM — quietSep 21, 6 AM — quietSep 21, 9 AM — quietSep 21, 12 PM — quietSep 21, 3 PM — quietSep 21, 6 PM — quietSep 21, 9 PM — quietSep 22, 12 AM — quietSep 22, 3 AM — quietSep 22, 6 AM — quietSep 22, 9 AM — quietSep 22, 12 PM — quietSep 22, 3 PM — quietSep 22, 6 PM — quietSep 22, 9 PM — quietYesterday, 12 AM — quietYesterday, 3 AM — quietYesterday, 6 AM — quietYesterday, 9 AM — quietYesterday, 12 PM — quietYesterday, 3 PM — quietYesterday, 6 PM — quietYesterday, 9 PM — quietToday, 12 AM — quietToday, 3 AM — quiet 1–2
Sep 13Sep 14Sep 15Sep 16Sep 17Sep 18Sep 19Sep 20Sep 21Sep 22now · 5:47 AM ET
  1. 2

    Coverage of the findings spreads via syndication and social sharing

    The ScienceAlert account of the study was picked up and reshared across aggregators and social platforms, including Google News and Mastodon-linked posts, extending the reach of the findings without adding new reporting.

    • us@pubeurope.com

      https://www. europesays.com/us/1059074/ The Atlantic Ocean Has a Hidden ‘Heat Valve’ That Controls Earth’s Temperature – And It Could Be Closing : ScienceAlert # MSFTContent # Science # UnitedStates # UnitedStates # US

      us@pubeurope.comMastodon11d agoview on Mastodon ↗
  2. background

    Buizert et al. publish 'heat valve' model of AMOC in Nature Geoscience — A multinational research team led by Christo Buizert presents three climate models showing the AMOC controls global ocean heat content and planetary energy balance, not just heat redistribution between hemispheres, reinterpreting past Dansgaard–Oeschger climate oscillations.

  3. 1

    New model resolves mismatch between Greenland and Antarctic ice-core records

    The heat-valve framework explains why past abrupt climate shifts appeared rapidly in Greenland ice cores but only slowly in Antarctic records over the same periods, a puzzle the older 'thermal bipolar seesaw' model struggled to account for.

    “a critical threshold beyond which AMOC weakening becomes self-reinforcing and irreversible.”
    — Christo Buizert, Lead study author · source
  4. background

    Researchers show AMOC state flips whether the ocean sheds or stores heat — The models found that when the AMOC is strong, deep convection lets the North Atlantic vent heat to the atmosphere and space; when it weakens, convection shuts down and heat instead accumulates in the ocean interior, raising planetary energy content overall.

Also covered reported alongside — the timeline has no entry for these yet

  1. 2 outlets The Atlantic Has a Hidden 'Heat Valve' Controlling Earth's Temperature – And It's Closing

    first by Yahoo, 12d ago · also ScienceAlert

    1 more headline