The Mauna Loa Observatory in Hawaii announced this week that the atmosphere passed 410 ppm of carbon dioxide and is heading for a monthly average of 407 ppm, the highest values observed on earth in millions of years:
Carbon dioxide concentrations have skyrocketed over the past two yearsdue to in part to natural factors like El Niño causing more of it to end up in the atmosphere. But it’s mostly driven by the record amounts of carbon dioxide humans are creating by burning fossil fuels.
“The rate of increase will go down when emissions decrease,” Pieter Tans, an atmospheric scientist at the National Oceanic and Atmospheric Administration, said. “But carbon dioxide will still be going up, albeit more slowly. Only when emissions are cut in half will atmospheric carbon dioxide level off initially.”
Even when concentrations of carbon dioxide level off, the impacts of climate change will extend centuries into the future. The planet has already warmed 1.8°F (1°C), including a run of 627 months in a row of above-normal heat. Sea levels have risen about a foot and oceans have acidified. Extreme heat has become more common.
Too bad all that data isn't persuasive enough for some people. I guess the planet just needs better P.R.