Heat-trapping gases broke records in 2018

From The Guardian:

“The gases heating the planet at higher levels in 2018 than humans have ever recorded, according to an authoritative report published by the American Meteorological Society and compiled by the US government.

Greenhouse gases were at levels unseen in 60 years of modern measurements and 800,000 years of ice core data, the study found. The data used in the 325-page report was collected from more than 470 scientists in 60 countries.

The global annual average for carbon dioxide, which is elevated because of human activities such as driving cars and burning fuel, was 407.4 parts per million, 2.4 ppm higher than in 2017. The warming influence of CO2 and other gases in the atmosphere is now nearly 43% stronger than in 1990.

2018 was the fourth warmest year since the mid-to-late 1800s. Temperatures were 0.3C to 0.4C higher than the average between 1981 and 2010. Only 2015, 2016, and 2017 were hotter. 

Sea levels were the highest on record, and sea surface temperatures were also near a record high.”

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