For five years now, a distinctive green laser beam has been shining at night up to 30 kilometers (19 miles) above the harbor of the island's capital. It forms part of a high-energy lidar with which the Leibniz Institute for Atmospheric Research (TROPOS) operates continuous aerosol and cloud meas...

Source: [Phys.org](https://phys.org/news/2026-06-years-aerosol-remote-mindelo-milestone.html)

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