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Science and Technology
Business Honor
06 December, 2024
Research shows low clouds over oceans have significantly declined, increasing the Earth's warming rate.
A new study published in Science has revealed a crucial factor behind the rapid rise in global temperatures: the decline of low-lying clouds over the oceans. This phenomenon, which has intensified the planet's warming, is linked to the concept of albedo — the Earth's ability to reflect sunlight. The findings suggest that fewer bright, low clouds have contributed to the planet absorbing more solar energy, thus accelerating global warming.
The research, led by the climate scientists at the Alfred Wegener Institute in Germany, identifies a drastic low cloud cover reduction, with this occurring particularly in the North Atlantic Ocean. Such an amount of reduction in cloud cover has brought about a record albedo low, thus leading to a higher warming trend of the Earth. Albedo is quite critical in regulating Earth's climatic conditions as it tends to reflect sunlight back to space, and with lesser reflections, more heat gets trapped within the Earth's surface.
While the reason for this decline in low clouds is still unknown, scientists suggest a few possible reasons. First, changes in shipping pollution, which have previously cooled the Earth by making clouds brighter, and natural climate fluctuations are considered. But the principal cause could be global warming itself since warmer oceans and air contain less moisture, which is the very source of cloud formation.
The study's results have shown that cloud behavior would have to be included in the future climate models, considering their significant role in Earth's albedo. "The decline in low clouds is so rapid that even at the current rate, if it continues, it would give even more intense warming than anyone predicted," said one of the scientists.
This research underlines the importance of complex atmospheric phenomena in the fight against climate change. Scientists are urging improved climate models that account for changes in cloud cover and its effect on warming as global temperatures continue to rise.