Richard Dixon: Last week brought three items of bad news on climate, one on the science, one on the breakdown of natural systems and one on Scotland’s emissions. Scientists putting together the latest global assessment of climate change science revealed that a better understanding of the role of clouds in a warmer world mean a key assumption that has held steady for 30 years may be wrong, meaning the Earth’s atmosphere is more sensitive to changes in greenhouse gases than previously thought. The early indications are that business-as-usual predictions of the world reaching a disastrous 3C of warming by 2100 should now be revised upwards to a catastrophic 5C. This would also mean that the already very difficult goal of keeping the temperature rise below 1.5C is beyond humanity’s ability.
Scotsman 22nd June 2020 read more »
Antarctic melting starts with dramatic speed. Ice shelves during the sudden warm spell at the close of the last Ice Age retreated at up to 50 metres a day. This finding is not based on climate simulations generated by computer algorithms. It is based on direct evidence left 12,000 years ago on the Antarctic sea floor by retreating ice. The finding is an indirect indicator of how warm things could get – and how high sea levels could rise – as humans burn ever more fossil fuels and raise atmospheric greenhouse gas levels to ever higher ratios.
Climate News Network 23rd June 2020 read more »