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Reply on RC9
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Scientists sampling the Atlantic Ocean found almost no tiny zooplankton in surface waters, but lots of soot, microplastic, and chemical pollution instead. This matters because that thin surface layer helps control evaporation and cloud formation, meaning pollution there could affect climate, not just carbon dioxide. The findings suggest fighting ocean pollution may be just as important as cutting carbon emissions.
Abstract. Climate policy treats carbon dioxide as the single lever on the climate. We suggest a second one has been overlooked: the marine biodiversity that builds and maintains the ocean surface microlayer (SML) and that pollution is now degrading. Water vapour, not CO₂, is the largest single contributor to the natural greenhouse effect and the strongest feedback on warming. The ocean supplies most of that vapour across the 71% of the planet it covers, and the thin biogenic lipid-and-surfactant film phytoplankton spread over the sea surface helps govern how readily it evaporates and forms aerosol. That same film gathers lipophilic "forever" chemicals, together with the microplastic and black-carbon soot they cling to, to levels far above the water beneath, where they turn toxic to the plankton that hold the ecosystem together. An automated image pipeline sized and classified 51,547 particles larger than 20 μm in 352 georeferenced surface samples from eight sailing vessels crossing the trade-wind North Atlantic. Zooplankton were absent from 93.8% of stations. Black carbon appeared at 89.8%, microplastic particles at 69.9%, microfibres at 22.4% and phytoplankton at 81.8%; 99.2% of everything counted measured below 200 μm. A separate 110-image, GPS-tagged crossing returned zero zooplankton at every point on the track, and a plankton net towed at the surface by day and by night confirmed the scarcity directly, returning roughly 0.2 to 0.5 animals per cubic metre – far below any productive ocean. In short, this surface layer is stripped of animal plankton and steeped in combustion and plastic residue. We trace what that may mean for the microlayer, for water-vapour feedback and cloud formation, and for ocean pH, and argue that cutting pollution has to sit beside cutting carbon.
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Reply on RC9
AI summary Read the abstract
Scientists sampling the Atlantic Ocean found that its surface, a thin film that helps control evaporation and cloud formation, is nearly empty of tiny animals but full of soot, "forever chemicals," and microplastics. This matters because that surface layer influences water vapor, which affects climate even more than CO2, meaning ocean pollution may be quietly disrupting the systems that regulate our planet's temperature.
Reply on RC1
AI summary Read the abstract
Scientists sampling the North Atlantic found tiny ocean creatures (zooplankton) almost completely missing from the sea surface, while black carbon soot and microplastic pollution were widespread instead. This matters because this thin surface layer of the ocean helps control water evaporation and cloud formation, meaning pollution, not just carbon dioxide, may be quietly disrupting the ocean's role in regulating Earth's climate.
Reply on RC4
AI summary Read the abstract
Scientists sampling the Atlantic Ocean's surface found it's nearly empty of tiny animal plankton but full of pollution, black carbon soot, microplastics, and "forever chemicals", in the thin film where seawater meets air. This matters because that surface film helps control how ocean water evaporates into the atmosphere, which affects clouds and global warming, suggesting that ocean pollution (not just carbon dioxide) may be quietly messing with the climate systems we all depend on.
Reply on RC8
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Scientists sailing across the North Atlantic found that the ocean's surface, a thin film that helps produce water vapor and clouds, is now loaded with microplastics, soot, and "forever chemicals," while the tiny animals (zooplankton) that normally live there were almost completely missing. This matters because that surface layer may play a bigger role in climate regulation than previously realized, and its contamination suggests ocean pollution and climate change are more tightly linked than we thought, meaning cleaning up plastic and chemical pollution may be just as important as cutting carbon emissions.
Reply on RC2
AI summary Read the abstract
Scientists sailing across the Atlantic Ocean found that its surface, a thin film that helps control evaporation and cloud formation, is nearly empty of tiny animal life (zooplankton) but loaded with soot, microplastics, and "forever chemicals" at almost every stop they tested. This matters because that surface layer plays a big role in regulating water vapor, one of the most powerful natural greenhouse gases, meaning ocean pollution might be quietly disrupting climate systems in ways that go beyond just CO₂, and it's a reminder that the same plastics and toxic chemicals fouling the ocean sur
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