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The ocean is full of tiny plastic particles – we found a way to track them with satellites

In The Conversation, Chris Ruf explains how CYGNSS can find the source ocean microplastics and aid in future clean up.

Written by: ejolsen

September 8, 2021

portraitChris Ruf
Frederick Bartman Collegiate Professor of Climate and Space Science

EXPERTS:

Written by Chris Ruf

Plastic is the most common type of debris floating in the world’s oceans. Waves and sunlight break much of it down into smaller particles called microplastics – fragments less than 5 millimeters across, roughly the size of a sesame seed.

To understand how microplastic pollution is affecting the ocean, scientists need to know how much is there and where it is accumulating. Most data on microplastic concentrations comes from commercial and research ships that tow plankton nets – long, cone-shaped nets with very fine mesh designed for collecting marine microorganisms.

But net trawling can sample only small areas and may be underestimating true plastic concentrations. Except in the North Atlantic and North Pacific gyres – large zones where ocean currents rotate, collecting floating debris – scientists have done very little sampling for microplastics. And there is scant information about how these particles’ concentrations vary over time.

This article was originally published in The Conversation. Read the full article.

related links

Tracking ocean microplastics from space

Explore: Climate and Space Sciences and Engineering Energy & Environment Faculty Perspectives Research Space Sustainability Water

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