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Greenhouse gases surge to record in 2018, exceeding 10-year average rate: U.N.

GENEVA (Reuters) - Greenhouse gases in the atmosphere hit a new record in 2018, rising faster than the average rise of the last decade and cementing increasingly damaging weather patterns, the World Meteorological Organization (WMO) said on Monday.
A handout picture of the Gorner Glacier taken in 1863 in Zermatt, Switzerland and released by ETH Library Zurich, is seen displayed at the same location on August 25, 2019. REUTERS/Denis Balibouse Glaziologische Kommission der Akademie der Naturwissenschaften Schweiz/ETH Library Zurich/Handout via REUTERS
By Reuters

GENEVA,Nov 25 : Greenhouse gases in the atmosphere hit a new record in 2018, rising faster than the average rise of the last decade and cementing increasingly damaging weather patterns, the World Meteorological Organization (WMO) said on Monday.


The U.N. agency’s Greenhouse Gas Bulletin is one of a series of studies to be published ahead of a U.N. climate change summit being held in Madrid next week, and is expected to guide discussions there. It measures the atmospheric concentration of the gases responsible for global warming, rather than emissions.


“There is no sign of a slowdown, let alone a decline, in greenhouse gases’ concentration in the atmosphere - despite all the commitments under the Paris Agreement on Climate Change,” said WMO Secretary-General Petteri Taalas.


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“This continuing long-term trend means that future generations will be confronted with increasingly severe impacts of climate change, including rising temperatures, more extreme weather, water stress, sea level rise and disruption to marine and land ecosystems.”


The concentration of carbon dioxide, a product of burning fossil fuels that is the biggest contributor to global warming, surged from 405.5 parts per million in 2017 to 407.8 ppm in 2018, exceeding the average rate of increase of 2.06 ppm in 2005-2015, the WMO report said.


Irrespective of future policy, carbon dioxide stays in the atmosphere for centuries, locking in warming trends.


“It is worth recalling that the last time the Earth experienced a comparable concentration of CO2 was 3-5 million years ago,” Taalas said.


Levels of methane - a much more potent greenhouse gas than CO2 - and nitrous oxide also hit new records, the report said.


The U.N. Environment Programme’s annual “emissions gap” report, due on Tuesday, assesses whether countries’ emissions reduction policies are enough.

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