Philobiblon

The world: 1.9C hotter than an average January.

Then this was in my inbox this morning – attributed to Gavin Schmidt, an atmospheric scientist who works in James Hansen’s team at NASA GISS….

…radiative forcing which the planet is experiencing just now is roughly the same as the current CO2 levels, but only because of the massive cooling effect from sulphour aerosols (which are very short-lived, and which we can expect to decline dramatically if we move to a low-carbon economy). The full radiative forcing from all the greenhouse gases is around 460 ppm CO2e now, but if you add forcings from black soot and ozone, it’s around 560 ppm CO2e.