What is "marine cloud brightening" and how could it help address the issue?

Marine cloud brightening is a technique that involves spraying seawater into the air to make clouds more reflective. The researchers suggest this could be a way to maintain cloud reflectivity without relying on pollutants. However, more research is needed to ensure these techniques are safe and effective.

How is global warming progressing according to the University of Washington researchers?

The researchers warn that warming is accelerating faster than expected due to the unexpected connection between air quality and climate change. They explain that "we may be underestimating warming trends because this connection is stronger than we knew."

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Cutting Pollution Backfires: Clouds Lose Reflectivity, Accelerating Global Warming

Q: How are the University of Washington researchers' findings affecting global warming?

The researchers' analysis revealed that clouds have become nearly 3% less reflective per decade, and approximately 70% of this change can be attributed to reductions in air pollution. This is because smog and other particulates in the air actually help to whiten and brighten clouds, making them more reflective. By slashing air pollution, the clouds have lost this reflectivity, allowing more solar radiation to reach the Earth's surface and warm the planet.

5 Nov

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Summary

Reducing air pollution diminishes cloud reflectivity, contributing to faster global warming
Clouds have become 3% less reflective per decade due to pollution cuts
Experts warn warming is progressing faster than expected due to this connection

Cutting Pollution Backfires: Clouds Lose Reflectivity, Accelerating Global Warming

In a surprising turn of events, researchers have found that efforts to reduce air pollution have had an unintended consequence – they have accelerated global warming. The study, conducted by scientists at the University of Washington, analyzed cloud dynamics over the Northeastern Pacific and Atlantic oceans between 2003 and 2025.

Their analysis revealed that clouds have become nearly 3% less reflective per decade, and approximately 70% of this change can be attributed to reductions in air pollution. This is because smog and other particulates in the air actually help to whiten and brighten clouds, making them more reflective. By slashing air pollution, the clouds have lost this reflectivity, allowing more solar radiation to reach the Earth's surface and warm the planet.