Geneva – Greenhouse gas concentrations climbed to a new record in 2019 and rose again this year despite an expected drop in emissions due to the Kovid-19 lockdown, the World Meteorological Organization (WMO) said on Monday, warning of complacency.
Many scientists expect the biggest annual drop in carbon emissions in generations this year as the coronovirus has measures to keep grounded planes, docked ships and passengers at home.
However, WMO described the projected 2020 drop as a “small blip” and the resulting impact on carbon dioxide concentrations, which contribute to global warming, would not be larger than normal annual fluctuations.
The WMO’s Greenhouse Gas Bulletin stated, “… in the short term the effects of Kovid-19 imprisonment cannot be distinguished from natural variability.”
The annual report released by the United Nations agency based in Geneva measured the atmospheric concentration of gases – carbon dioxide, methane and nitrous oxide – that are warming our planet and triggering extreme weather events.
Carbon dioxide levels, a product of burning fossil fuels that are the largest contributors to global warming, touched a new record of 410.5 parts per million in 2019.
The annual growth is larger than in the previous year and beat the average over the last decade.
“Our record history has never seen such an increase,” said WMO Secretary General Petri Talas, referring to the rises since 2015, calling for a continuous flattening of the (emission) curve.
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The WMO cites initial readings from its Tasmania and air stations, saying that global data is not available until 2020, but the trend of rising concentrations remains intact.
Like other scientific bodies, the WMO said it expects annual global carbon emissions to decrease this year due to Kovid’s measures, and made preliminary estimates of between 4.2-7.5 percent.
Such a decline would not reduce atmospheric carbon dioxide, but would slow the rate of increase temporarily on a normally decreasing scale, it said.
Climate science scientists say that we keep a lot of carbon dioxide emitted decades ago from the atmosphere to control emissions and contribute to global warming.
In the period 2018-2019, concentrations of the more powerful heat-trapping gas methane increased by 8 billion per year, the report said, slightly lower than the previous year, but the last 10 Higher than average over the years. Period.
The methane concentration data is closely watched by scientists as gas is prone to unexpected leaks from the fossil fuel industry. This can make their atmospheric levels harder to predict than carbon dioxide.
The level of nitrous oxide, which destroys the ozone layer of the atmosphere and exposes humans to harmful ultraviolet rays, also increased in 2019 but at a lower rate than in the previous year and with an average increase over the past decade.