Arctic Ice Particles: Mysteries Unveiled in Ny-Ålesund

In the chilly Arctic town of Ny-Ålesund, scientists discovered that tiny particles in the air, called ice-nucleating particles (INPs), play a crucial role in forming clouds and affecting weather patterns. These INPs can come from various sources and change over time, making them tricky to understand and predict. During autumn 2019, researchers found that the number of these particles in the Arctic was much lower than the global average. Some of these particles even broke down when heated, suggesting they might come from living things like bacteria or plants.Fluorescent particles were also linked to higher INP counts at warmer temperatures, hinting that biogenic aerosols, like those from plants or algae, might be important sources in the Arctic. High winds from the ocean and higher concentrations of organic particles were also connected to increased INP numbers. The study showed that these particles have diverse origins and change a lot, even in the remote Arctic.