Scientists explain how carbon dioxide cools the stratosphere

Kiswahili

Researchers at Columbia University have identified the precise mechanism by which rising carbon dioxide levels cool the upper atmosphere. The finding accounts for decades of observed stratospheric cooling amid surface warming. Their study appears in the journal Nature Geoscience.

The stratosphere, the layer between roughly 11 and 50 kilometers above the surface, has cooled by about 2 degrees Celsius since the mid-1980s. This cooling exceeds by more than ten times the amount expected without human emissions of carbon dioxide. The process was first predicted in the 1960s by climatologist Syukuro Manabe.

Makala yanayohusiana

Ancient Antarctic ice reveals modest greenhouse gas changes over 3 million years

Scientists analyzing ancient ice from Antarctica have found that ocean temperatures dropped by 2 to 2.5 degrees Celsius over the past 3 million years, while carbon dioxide and methane levels changed only modestly. The studies, led by researchers from Oregon State University and others, suggest factors beyond greenhouse gases drove much of Earth's long-term cooling. The findings come from ice cores at Allan Hills in East Antarctica.

Indirect gases drive 15 percent of global warming

Imeripotiwa na AI

Emissions of carbon monoxide and volatile organic compounds have contributed significantly to planetary warming, according to new research. These indirect greenhouse gases account for about 15 percent of the temperature rise since pre-industrial times. Few nations currently address them in climate plans.

Science

MIT study finds feedstock leaks delaying ozone recovery

Asia

Study links heatwaves and ozone to more cardiac deaths in India

Environment

Climate change depletes oxygen levels in global rivers

Atlantic ocean current weakening over two decades, study shows

A major Atlantic Ocean current system that regulates global climate has been slowing down for nearly 20 years. New research provides direct evidence of the decline across a wide area of the North Atlantic.

Lab tests show hydrogen can be made from rocks while storing CO2

Imeripotiwa na AI

Researchers have demonstrated in laboratory experiments that hydrogen can be produced from iron-rich rocks while simultaneously locking away carbon dioxide. The work, presented at a recent geoscience meeting, aims to combine clean energy generation with climate mitigation. Field trials are now being planned to test the approach at scale.

Ijumaa, 19. Mwezi wa sita 2026, 17:07:58

Carbon monoxide in Uranus atmosphere points to icy interior

Alhamisi, 18. Mwezi wa sita 2026, 21:11:22

Simulations show complex life on Earth could persist longer

Jumatano, 10. Mwezi wa sita 2026, 02:37:05

Study shows small nuclear war could damage ozone layer

Alhamisi, 4. Mwezi wa sita 2026, 07:48:33

Study links Atlantic cold blob to weakening ocean currents

Jumatano, 13. Mwezi wa tano 2026, 12:24:42

Arctic wildfires release carbon stored for thousands of years

Jumatatu, 11. Mwezi wa tano 2026, 00:28:36

Volcanic plume unexpectedly destroyed methane after 2022 eruption

Jumatatu, 13. Mwezi wa nne 2026, 19:12:36

AMOC collapse could release 640 billion tonnes of CO2

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