Proceedings of the National Academy of Sciences, August 10 Under high emissions scenarios, northern hemisphere permafrost and peatlands will show a 30-50% greater contribution to warming than previously projected, with emissions impacts equivalent to 1% of all anthropogenic radiative forcing this century – and this takes into account both peatland carbon uptake and permafrost thaw […]
Global Methane Budget, 2000-2017 (2020), July 15, 2020. A new consensus update to global methane emissions reveals that atmospheric methane increased by 8.5ppb and 10.7ppb in 2018 and 2019, respectively – two of the highest annual values of the 21st century. The current concentration of atmospheric methane is more than 2.5 times higher than pre-industrial […]
2020年对北极来说是异常炎热的一年，尤其是在俄罗斯北部高纬度地区。从1月份开始，一股持续的持续热浪打破了纪录，在6月份达到38摄氏度（100.4华氏度）的峰值。从那以后，极端高温持续不断。例如，西伯利亚的俄罗斯城镇维尔霍扬斯克已经经历了11天以上……