Normally, the hottest years on record occur when the underlying human-caused global warming trend gets a temporary boost from an El Niño’s enhanced warming in the tropical Pacific. So it’s been a surprise to climate scientists that 2017 has been so remarkably warm — because the last El Niño ended a year ago. The National Oceanic and Atmospheric Administration (NOAA) reported Tuesday that the first half of 2017 was the second-warmest January-June on record for Earth, topped only by 2016, which was boosted by one of the biggest El Niños on record.
Renew Economy 20th July 2017 read more »
Humans must start removing carbon dioxide from the atmosphere as soon as possible to avoid saddling future generations with a choice between extreme climate change or spending hundreds of trillions of dollars to avoid it, according to new research. An international team of researchers – led by Professor Jim Hansen, Nasa’s former climate science chief – said their conclusion that the world had already overshot targets to limit global warming to within acceptable levels was “sufficiently grim” to force them to urge “rapid emission reductions”. But they warned this would not be enough and efforts would need to be made to reduce the amount of carbon dioxide in the atmosphere by about 12.5 per cent. This, the scientists argued, could be mostly achieved by agricultural measures such as planting trees and improving soil fertility, a relatively low-cost way to remove carbon from the air. Other more expensive methods, such as burning biomass in power plants fitted with carbon-capture-and-storage or devices that can remove carbon from the air directly, might also be necessary and would become increasingly needed if steps were not taken soon.
Independent 18th July 2017 read more »