1/ The Govt's committee on climate change has added its 6th budget period on the pathway to ‘net-zero’ by 2050. But @theCCCuk suggests it's not possible to convert Paris 1.5-2°C into UK mitigation, as the minister asked for: https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/748489/CCC_commission_for_Paris_Advice_-_Scot__UK.pdf &
https://planb.earth/wp-content/uploads/2018/11/Letter-from-Claire-Perry.pdf

2/I find it disturbing @theCCCuk has adopted the climate sceptic ruse of "it’s too uncertain" (Ch8/3/c) as an excuse for not aligning its advice with the Paris 1.5-2°C commitments. Another “discourse of delay” – i.e. “push non-transformative solutions”? https://www.cambridge.org/core/journals/global-sustainability/article/discourses-of-climate-delay/7B11B722E3E3454BB6212378E32985A7

3/ In a recent paper we estimated the cumulative emissions implied by @theCCCuk ‘net-zero’ pathway as being around 9GtCO2 (not GHGs). This is 2 to 3 times larger than our estimate of the UK’s fair Paris-compliant carbon budget (2.7-3.8GtCO2 from 2020). https://www.tandfonline.com/doi/pdf/10.1080/14693062.2020.1728209

4/ If all nations were similarly to exceed their fair Paris-compliant carbon budget, total global emissions would align with warming closer to 3°C than 2°C. https://theecologist.org/2020/jun/08/beyond-climate-comfortable-ignorance

5/The huge difference between @theCCCuk &our analysis arises from their: 1) being guided by politically expediency, 2) deep reliance on future generations deploying negative emission technologies, 3)assuming a disproportionately large slice of the global carbon budget for the UK.