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Greenhouse gases in the atmosphere, the main driver of climate change, hit record highs last year and have continued climbing in despite measures to halt the COVID19 pandemic, the UN said Averaged over Earth's surface, the 1993– heatgain rates were 037–041 Watts per square meter for depths from 0–700 meters (down to 04 miles), depending on which research group's analysis you consult Meanwhile, heat gain rates were 015–031 Watts per square meter for depths of 700–2,000 meters (04–12 miles) The graphs show monthly mean carbon dioxide measured at Mauna Loa Observatory, Hawaii The carbon dioxide data on Mauna Loa constitute the longest record of direct measurements of CO 2 in the atmosphere They were started by C David Keeling of the Scripps Institution of Oceanography in March of 1958 at a facility of the National Oceanic and Co And Greenhouse Gas Emissions Our World In Data Greenhouse gases graph 2020