Huge Blow to Campaign by Climate Change 'Sceptics'

The new Met Office paper this week casts serious doubt on the low estimates of climate sensitivity. It points out that a doubling of atmospheric levels of carbon dioxide directly causes a 1°C rise in global average temperature. However, warming the atmosphere causes it to hold more water vapour, which itself is a powerful greenhouse gas. This positive feedback increases the warming by a further 1°C.

The Huffington Post UK