This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Friday 22 December 2023
Anthropogenic Snow
Large white bands appeared on the ground near London's Heathrow Airport in January 2023. This was snow, despite the relatively dry conditions prevailing in that location (https://www.theguardian.com/environment/2023/dec/20/rare-industrial-snowfall-thought-to-be-caused-by-pollution-recorded-in-uk). The phenomenon appeared to be 'anthropogenic' (human-caused) or 'industrial' snow. The snow hadn't fallen from the clouds. Moisture in cold air had condensed around fine air pollution particles to form the flakes. Industry had effectively 'seeded' the event. Such anthropogenic snow has been seen in other industrialised areas of the globe.
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