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United in Science 2020 report
September 17 , 2020
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- The United in Science 2020 Report has been compiled by the World Meteorological Organization (WMO) under the direction of the United Nations Secretary-General.
- The report said that the final levels of emissions for 2020 would be 4-7% less than in 2019.
- To limit global heating to less than 2-degree Celsius rise above pre-industrial levels by 2100, emissions need to fall by 5% every year.
- Between 2020 and 2024, global temperatures are likely to breach the 1.5 degrees Celsius threshold in multiple months.
- The major greenhouse gases, CO2, CH4, and N2O continue to increase in 2019 and 2020.
- Human activities emitted 42 billion tonnes of CO₂ in 2019 alone.
- In overall, 2020 emissions are estimated to decline by 4% to 7% compared to 2019 levels.
- Global fossil CO2 emissions reached a new record high of 36.7 Gigatons (Gt) in 2019, 62% higher than in 1990.
- The 5-year period from 2016–2020 is expected to be the warmest on record with an average global mean surface temperature of 1.1 °C above pre-industrial era.
- The Emissions Gap in 2030 is to be estimated at 12-15 Giga tons (Gt) CO2 to limit global warming to below 2°C above pre-industrial levels by the end of this century.
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