πŸ“‘ Australia’s Angry Summer: This Is What Climate Change Looks Like

Bookmarked Australia’s Angry Summer: This Is What Climate Change Looks Like (Scientific American Blog Network)

The angry summer playing out in Australia right now was predictable. The scientific evidence is well known for how anthropogenic greenhouse gas emissions are causing long-term climate change and altering climate variability in ways that increase our fire risk. The role of climate change in the unprecedented fires gripping Australia is also well understood by our emergency services. Sadly, though, this summer has occurred against a backdrop in which the Australian government has argued, on the world stage, to scale back our greenhouse-gas-emissions-reduction targets. Our leaders are literally fiddling while the country burns.

Nerilie Abram provides some context to the weather conditions that have produced the current bushfire crisis in Australia.

Australia is the most fire prone of all of Earth’s continents. But what has made its latest fire season so extreme? Wildfires need four ingredients: available fuel, dryness of that fuel, weather conditions that aid the rapid spread of fire and an ignition. Climate change is making Australian wildfires larger and more frequent because of its effects on dryness and fire weather.

This includes the reduction in rainfall over time, the three winters where the rains have failed to come and the positive trend in the Southern Annular Mode (SAM).

Umair Irfan also unpacks these variables for Vox, touching on both the Southern Annular Mode and the Indian Ocean Dipole.

https://youtu.be/RYX9ahqceAI

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