In terms of sea ice extent, this year has been particularly unusual. July’s sea-ice levels were three times further from the average than what had ever been seen previously. At the moment, Antarctica’s ice reflects a large amount of solar radiation back into space, helping keep the world cool. Only 0.2-0.4% of the continent is exposed above the ice at the moment, but that proportion is likely to increase with further warming. That reduces the albedo – or reflectivity – of the surface and increases the heat absorbed by the planet. It’s an effect we’re already seeing in the Arctic, which is now warming four times faster than the rest of the planet. Related: The Rapid Loss Of Antarctic Sea Ice Brings Grim Scenarios Into View and Antarctic Sea Ice Has Shrunk By An Area Nine Times The Size Of Britain and Antarctic Sea Ice Levels Dive In ‘Five-Sigma Event’, As Experts Flag Worsening Consequences For Planet
- Date Posted:
- August 11, 2023
Removing London’s output and headcount would shave 14% off British living standards, precisely enough to slip behind the last of the US states. Britain in the aggregate may not be as poor as Mississippi, but absent its outlier capital it would be. By comparison, amputating Amsterdam from the Netherlands would shave off 5%, and removing Germany’s most productive city (Munich) would only shave off 1%. Most strikingly, for all of San Francisco’s opulent output, if the whole of the bay area from the Golden Gate to Cupertino seceded tomorrow, US GDP per capita would only dip by 4%.