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Amazon's carbon clock is speeding up, and violent storms may be only part of why

Phys · · 493 words · By Chinese Academy

Researchers from the South China Botanical Garden, Cornell University, and other institutions studied biomass carbon turnover in Amazonian forests. Their findings, published in Nature Climate Change, suggest that atmospheric drying and convective storms are reducing the time carbon remains stored in vegetation, potentially undermining the forest's long-term carbon storage capacity.

open_in_new Read the original article: https://phys.org/news/2026-05-amazon-carbon-clock-violent-storms.html

analyticsAnalysis

10%
Propaganda Score
confidence: 95%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkFact-Check Results

7 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

info Single Source 7
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“Tropical forests store more than 60% of the world's vegetation biomass”
SINGLE SOURCE
One web search result explicitly states that tropical forests store over 60% of the world's vegetation biomass. However, other results provide general forest area data without confirming this specific percentage, and no second independent source corroborates the 60% figure.
travel_explore
web search NEUTRAL — Tropical forests, encompassing a significant portion of the Earth's land area, play a pivotal role in the global carbon cycle and climate regulation. These lush ecosystems store over 60% of the world'…
https://www.lifetechnology.com/blogs/life-technology-science…
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web search NEUTRAL — This biome includes tropical seasonal forests, which occur in humid tropical climates with a pronounced dry season, as well as tropical rainforests. Tropical seasonal forests are characterized by a mi…
https://www.sciencedirect.com/topics/agricultural-and-biolog…
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web search NEUTRAL — The world has a total forest area of 4.14 billion hectares (ha), which is close to one-third (32 percent) of the global land area and equivalent to 0.50 ha of forest per person. The tropical domain ha…
https://openknowledge.fao.org/server/api/core/bitstreams/2de…
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“researchers from the South China Botanical Garden (SCBG) of the Chinese Academy of Sciences, in collaboration with Cornell University and several international research institutions, have found that the residence time of carbon in Amazonian vegetation will continue to shorten as atmospheric drying intensifies and convective storm activity increases”
SINGLE SOURCE
The provided evidence mentions a Cornell research team and general atmospheric drying, but there is no evidence of a specific study by the South China Botanical Garden (SCBG) and Cornell regarding carbon residence time in Amazonian vegetation.
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web search NEUTRAL — The Cornell research team includes Dr. Jonathan Lin, Dr. Toby Ault, and Dr. Flavio Lehner from the university’s Department of Earth and Atmospheric Sciences, with support from the Atkinson Center for …
https://pulse2.com/willis-and-cornell-university-partnership…
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web search NEUTRAL — Atmospheric drying (referred to as water vapor pressure deficit or VPD) is expected to increase as a result of climate change. This could reduce crop yields and make trees shorter.
https://twin-cities.umn.edu/news-events/atmospheric-drying-w…
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web search NEUTRAL — Researchers have discovered a strong historical link between global temperature increases and increases in volcanic activity.
https://newatlas.com/climate-volcanic-activity-link/25520/
info
“The results are published in Nature Climate Change.”
SINGLE SOURCE
The evidence provided for this claim consists of time zone information for Seattle and is completely irrelevant to the publication of a study in Nature Climate Change.
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web search NEUTRAL — Historic, present and future dates for daylight saving time and clock changes. Time changes between years 2025 and 2029 in USA – Washington – Seattle are shown here.
https://www.timeanddate.com/time/zone/usa/seattle
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web search NEUTRAL — Exact local time now in Seattle, Washington, United States. Time Zone, UTC offset, and DST. Clock with seconds, 12/24h formats, sunrise/sunset, and more.
https://www.worldometers.info/time/seattle-wa-usa/
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web search NEUTRAL — Jan 11, 2026 · The current local time in Seattle, Washington is Pacific Daylight Time (PDT), which runs at UTC/GMT -7 hours from March 8, 2026 through November 1, 2026. Outside those dates, Seattle op…
https://seeingwashington.com/what-time-is-it-in-seattle/
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“the researchers identified convective storms—extreme weather events often accompanied by short-duration heavy rainfall and strong winds—as a key climatic regulator of biomass carbon turnover time in Amazonian forests.”
SINGLE SOURCE
The evidence provided includes general information about the Amazon rainforest and woody biomass in African forests, but does not mention convective storms as a regulator of biomass carbon turnover time in the Amazon.
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web search NEUTRAL — The Amazon rainforest, also called the Amazon jungle or Amazonia, is a moist broadleaf tropical rainforest in the Amazon biome that covers most of the Amazon basin of South America. This basin encompa…
https://en.wikipedia.org/wiki/Amazon_rainforest
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web search NEUTRAL — The carbon sink in live aboveground biomass in intact African tropical forests has been stable for the three decades to 2015, at 0.66 tonnes of carbon per hectare per year (95 percent confidence 6 int…
https://www.researchgate.net/publication/236984776_Residence…
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web search NEUTRAL — 1. The Amazon rainforest covers an enormous 6.7 million square kilometres. Spanning 8 countries and one overseas territory in South America and representing an area twice the size of India – or roughl…
https://www.wwf.org.uk/learn/fascinating-facts/amazon
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“Such storms were found to exert a stronger influence than drought stress-related indicators.”
SINGLE SOURCE
The evidence provided is general information about the Amazon and terrestrial carbon cycles; it does not contain any comparison between the influence of convective storms and drought stress-related indicators.
travel_explore
web search NEUTRAL — The Amazon rainforest, also called the Amazon jungle or Amazonia, is a moist broadleaf tropical rainforest in the Amazon biome that covers most of the Amazon basin of South America. This basin encompa…
https://en.wikipedia.org/wiki/Amazon_rainforest
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web search NEUTRAL — Abstract and Figures. The terrestrial carbon cycle has been strongly influenced by human‐induced CO2 increase, climate change, and land use change since the industrial revolution.
https://www.researchgate.net/publication/342182895_Accelerat…
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web search NEUTRAL — Tropical forest ungulates have lower biomasses than savanna or grassland ungulates, because in tropical forests the majority of primary production occurs in the canopy, well out of reacll from terrest…
https://www.academia.edu/61865254/Ungulate_biomass_in_relati…
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“the study also projected that by the end of this century, biomass carbon turnover time in Amazonian forests will decline by about 3% on average under a low-emissions scenario, and by as much as 15% under a high-emissions scenario.”
SINGLE SOURCE
The evidence discusses carbon projections for India and marine biomass declines, but does not contain the specific projections for Amazonian biomass carbon turnover time (3% and 15%) mentioned in the claim.
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web search NEUTRAL — Across India’s forested regions, the study projects that average carbon stock will rise by about 35%, 62%, and 97% by 2100 under low, medium, and high emissions. It will remain broadly similar until a…
https://www.hindustantimes.com/india-news/carbon-in-india-s-…
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web search NEUTRAL — If current trends continue, marine biomass will decline 17 percent by 2100, while it will decline only 5 percent if humanity implements strong mitigation programs.The researchers apply the models to f…
https://www.seafoodsource.com/news/environment-sustainabilit…
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web search NEUTRAL — The carbon sink in live aboveground biomass in intact African tropical forests has been stable for the three decades to 2015, at 0.66 tonnes of carbon per hectare per year (95 percent confidence 6 int…
https://www.researchgate.net/publication/236984776_Residence…
info
“Increasing atmospheric dryness and storms accelerates biomass turnover in Amazonian forests, Nature Climate Change (2026). DOI: 10.1038/s41558-026-02639-4”
SINGLE SOURCE
The evidence provided for this claim is about the physical product 'paper' and Amazon.com shopping, which is entirely irrelevant to the scientific paper and DOI cited in the claim.
travel_explore
web search NEUTRAL — Largely derived from lignocellulose, paper is created from a pulp dissolved into a slurry that is drained and dried into sheets. Different types of paper are defined by constituent fiber, paper pulp, …
https://en.wikipedia.org/wiki/Paper
travel_explore
web search NEUTRAL — Explore diverse paper products including recycled options, colored sheets, and specialty papers. Quality paper for all your printing projects.
https://www.amazon.com/paper/s?k=paper
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web search NEUTRAL — Buy paper, card stock, envelopes & more from top paper mills at The Paper Mill Store. Save money with rewards & discounts with free shipping available.
https://www.thepapermillstore.com/
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.