Thursday, 26 October 2023

More Risky Factors?

The concept of large scale climate tipping points, ought, by now, to be sadly familiar. Once certain conditions are reached (such as the loss of a certain proportion of polar ice), the situation becomes irreversible and changes carry on, irrespective of any attempted intervention. The collapse of the Amazon rainforest and the potential shutdown of the key Atlantic Ocean current are obvious examples. UN researchers have now also specified irreversible risk tipping points, more directly linked to many people's lives. The researchers think the entire risk landscape has changed and we are losing our tools to manage it (https://www.theguardian.com/environment/2023/oct/25/climate-crisis-threatens-tipping-point-of-uninsurable-homes-says-un). The researchers believe humanity is currently 'dangerously close' to irreversible risk tipping points. They cite as a clear example, the withdrawl of home insurance from areas prone to flooding and/or wildfires. The researchers also note that the drying up of goundwater in aquifers puts food production at risk in many countries. The loss of mountain glaciers in many regions creates similar problems (they have formerly progressively released freshwater over the seasons). The accummulation of space debris is also a risk tipping point. It increases the probability of knocking out satellite warning of extreme weather. It's suggested that exceeding these irreversible risk tipping points drastically damages the ability of humans to cope with immediate disasters.

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Birder's Bonus 241

Noted a Curlew ( Numenius arquata ) on the Loughor estuary at Bynea.