Japanese Scientists Confirm Microplastics Contaminate Clouds

Microplastics contaminate clouds

A team of Japanese researchers has confirm that microplastics contaminate clouds, raising concerns about their potential impact on the climate in ways that scientists don’t fully understand yet.

Collecting Cloud Water for Analysis

In a study publish in Environmental Chemistry Letters, the scientists conduct expeditions to Mount Fuji and Mount Oyama to collect water from the fog that enveloped their peaks.

Using advanced imaging techniques, the team analyze the physical and chemical properties of the collect samples. The researchers identify nine types of polymers and one type of rubber in airborne microplastics, ranging in size from 7.1 to 94.6 micrometers.

Each liter of cloud water containe between 6.7 and 13.9 plastic fragments. Hydrophilic polymers, which attract water, constitute the majority, indicating that these particles play a crucial role in rapidly forming clouds within the Earth’s climate system.

“If we don’t proactively address plastic air pollution, we could face the risk of climate and ecological change becoming a reality. This will result in serious and irreversible environmental damage in the future,” warned lead author Hiroshi Okochi from Waseda University, as report by AFP on Friday, September 29th.

Microplastics Defined

Microplastics are particles measuring less than 5 millimeters, originating from various sources, including industrial waste, textiles, synthetic car tires, personal care products, and more.

Small fragments of these materials have been found in fish from the deepest ocean trenches, covering the Arctic sea ice, and blanketing the snow in the Pyrenees mountains between France and Spain.

However, the mechanisms governing the movement of these hazardous materials remain unclear, and research on the transport of airborne microplastics is still limit.

“To our knowledge, this is the first report of microplastics in cloudy water,” clarified the study’s authors.

This discovery adds new evidence linking microplastics to a range of health impacts, including cardiovascular issues, respiratory problems, and cancer, in addition to the expanding environmental risks.

Microplastics are Contaminating clouds

The confirmation that microplastics are contaminating clouds is a significant development in the ongoing concern over plastic pollution’s impact on the environment and climate. The study conducted by Japanese researchers, published in Environmental Chemistry Letters, sheds light on the presence of microplastics in an unexpected and critical part of the Earth’s ecosystem.

The fact that airborne microplastics identify in cloud water from Mount Fuji and Mount Oyama indicates that these tiny plastic particles are not only pervasive in our environment but also capable of traveling great distances.

The range in size of the microplastics, from 7.1 to 94.6 micrometers, suggests that a variety of sources contribute to this pollution, including industrial waste, textiles, and personal care products. This widespread distribution of microplastics has already been observed in oceans, Arctic ice, and remote mountain ranges, underlining the urgent need to address this global issue.

The presence of hydrophilic polymers in the cloud water is particularly concerning, as these materials can aid in cloud formation. This raises questions about the potential influence of microplastics on weather patterns and climate systems, which require further research and understanding.


Lead author Hiroshi Okochi’s warning about the risks of climate and ecological change becoming a reality due to plastic air pollution underscores the urgency of addressing this problem. The environmental and health consequences of microplastics are becoming increasingly apparent, with links to cardiovascular issues, respiratory problems, cancer, and broader ecological impacts.

As scientists continue to investigate the transport and impact of airborne microplastics, it is evident that addressing plastic pollution is not just a matter of cleaning up oceans and land but also understanding and mitigating its far-reaching consequences on our planet’s climate and ecosystems.