mass extinctions
We have another climate metric to add to W/m^2 (climate forcing), GT/year (CO2 emissions), mm/year (sea level rise) and oC/decade (temperature change) and that would be m/day.
Meters per day is for tracking how quickly climatic zones will move as a result of man-made climate change and it is actually an astonishingly high number. David Appell at Quark Soup uses some rough numbers and comes up with a figure of 8 metres/day over the last 20 years. He bases this calculation on an article in the Scientific American (sounds like an oxymoron these days!) by Ken Caldiera who looks at the…