Climate change depletes oxygen levels in global rivers

18 Mwezi wa tano, 2026

Imeripotiwa na AI

Rivers worldwide are steadily losing dissolved oxygen, with climate change identified as the primary driver in a comprehensive new study. Nearly 80 percent of analyzed river systems have shown declines over four decades, hitting tropical regions hardest.

Researchers examined observations from 21,439 river reaches collected between 1985 and 2023. They determined that oxygen levels dropped at an average rate of 0.045 milligrams per liter per decade, with 78.8 percent of rivers affected by deoxygenation. The study was led by Prof. Kun Shi of the Nanjing Institute of Geography and Limnology at the Chinese Academy of Sciences, with Dr. Qi Guan as first author and input from Tongji University.

Makala yanayohusiana

Cleaning up air pollution could weaken vital AMOC ocean current

New research shows that efforts to reduce air pollution in Europe, North America and East Asia could accelerate weakening of the Atlantic Meridional Overturning Circulation. The ocean current plays a key role in regulating Europe’s climate. Scientists used multiple climate models to assess the impact under continued high greenhouse gas emissions.

Atlantic ocean current weakening over two decades, study shows

10 Mwezi wa tano, 2026 Imeripotiwa na AI

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.

Sayansi

Scientists identify 3,100 surging glaciers posing flood risks

Afrika

Congo basin blackwater lakes release ancient carbon

Sayansi

Scientists debate causes of accelerating global warming

AMOC collapse could release 640 billion tonnes of CO2

A new study warns that a shutdown of the Atlantic Meridional Overturning Circulation (AMOC) would trigger the release of up to 640 billion tonnes of carbon dioxide from the deep Southern Ocean near Antarctica. This feedback effect could raise global temperatures by an additional 0.2°C. Researchers at the Potsdam Institute for Climate Impact Research highlight the risk as humanity's emissions continue to weaken the key ocean current.

40 million Filipinos lack reliable water supply

20 Mwezi wa tatu, 2026 Imeripotiwa na AI

Around 40 million of the Philippines' 115 million population lack access to reliable water supply, according to the Department of Environment and Natural Resources (DENR). DENR Undersecretary Carlos Primo David stated that climate change or pollution could compromise water sources for millions. DENR chief Juan Miguel Cuna highlighted the challenge of water bankruptcy facing the country.

WMO includes Earth's energy imbalance in key climate indicators

The World Meteorological Organization has added the Earth's energy imbalance as a new key indicator in its latest climate report, highlighting how oceans absorb most excess heat. This measure underscores the ongoing warming trend despite yearly temperature fluctuations. The report warns of impacts on food systems from ocean heating and sea level rise.

Jumatano, 6. Mwezi wa tano 2026, 13:57:45