It is possible to limit warming to 1.5C above pre-industrial temperatures without using negative emissions from bioenergy with carbon capture and storage (BECCS), new research says. The study, published today in Nature Climate Change, throws open the debate about how to meet the stringent temperature goals of the Paris Agreement. It shows, for the first time, how a range of highly ambitious mitigation options can minimise – or, collectively, eliminate – the need for BECCS. BECCS is a controversial and largely untested negative emissions technology that has come to dominate pathways to 1.5C. The new paper instead explores alternatives including lifestyle changes, agricultural intensification and lab-grown meat, as well as an even more rapid adoption of renewables and energy efficiency. Some of these have tended to be excluded from the conversation, because they are hard for scientists to model.
Carbon Brief 13th April 2018 read more »
The shipping industry will be required to halve its emissions by 2050 under a global deal that will force companies to switch to cleaner fuels and may prompt a return to wind power. The International Maritime Organization (IMO), the UN’s shipping regulator, has set the first global emissions target for ships, which were excluded from the Paris climate change agreement in 2015. Shipping companies are already experimenting with fuel-saving measures, such as giant kites flown from the bow that pull vessels along and tall spinning cylinders which act like sails. The deal is likely to result in much wider adoption of these techniques as well as a switch to lower-carbon fuels, such as hydrogen and ammonia, in new vessels. Batteries will be used to power more ships on short journeys, as already happens on some ferries in Scotland. Ports may be required to invest in “shore power”, meaning ships can switch off their engines when moored and plug in to the grid. Ships could also slow down, with research showing that cutting speed by 10 per cent reduces fuel consumption by 20 per cent. However, some countries oppose this so-called “slow steaming”, with Chile and Peru arguing that it could damage the quality of the avocados, blueberries and cherries they ship to the UK by adding several days to journeys.
Times 14th April 2018 read more »
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