The Mauna Loa Atmospheric Baseline Observatory, on the Big Island of Hawaii, has been collecting data on atmospheric change since the 1950s. Atmospheric levels of planet-warming carbon dioxide aren’t just on their way to yet another record high this year — they’re rising faster than ever, according to the latest in a 66-year-long series of observations.
Carbon dioxide levels were 4.7 parts per million higher in March than they were a year earlier, the largest annual leap ever measured at the National Oceanic Atmospheric Administration laboratory atop a volcano on Hawaii’s Big Island. And from January through April, CO2 concentrations increased faster than they have in the first four months of any other year.
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