State of the Climate in 2018
The gases heating the planet in 2018 were higher than humans have ever recorded, according to an authoritative new report from the American Meteorological Society and the US government. Greenhouse gas levels topped 60 years of modern measurements and 800,000 years of ice core data, the study found. The data used in the 325-page report is collected from more than 470 scientists in 60 countries. The global annual average for carbon dioxide – which is elevated because of human activities like driving cars and burning fuel – was 407.4 parts per million, 2.4 ppm higher than in 2017. The report finds 2018 was the fourth-warmest on record since the mid-to-late- 1800s. Temperatures were .3C to .4C higher than the average between 1981 and 2010. Sea levels were the highest on record, as global heating melted land-based ice and expanded the oceans. Sea surface temperatures were also near a record high.
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