400 Parts Per Million
Last week, NOAA, the National Oceanic and Atmospheric Association’s leading atmospheric research facility, the Mauna Loa Observatory in Hawaii, reported that carbon dioxide concentrations have exceeded 400 parts per million in moderate latitudes for the first time in human history.
NOAA states that this record:
“marks an important milestone because Mauna Loa, as the oldest continuous carbon dioxide (CO2.) measurement station in the world, is the primary global benchmark site for monitoring the increase of this potent heat-trapping gas.
Carbon dioxide pumped into the atmosphere by fossil fuel burning and other human activities is the most significant greenhouse gas (GHG) contributing to climate change. Its concentration has increased every year since scientists started making measurements on the slopes of the Mauna Loa volcano more than five decades ago. The rate of increase has accelerated since the measurements started, from about 0.7 ppm per year in the late 1950s to 2.1 ppm per year during the last 10 years.”
Climate leader Bill McKibben, founder of 350.org, asserted, “The only question now is whether the relentless rise in carbon can be matched by a relentless rise in the activism necessary to stop it.” Many scientists believe that 350 parts per million is the safe upper limit for carbon dioxide in our atmosphere. It has never been clearer that we must do everything in our power to end our reliance on fossil fuels. To support financing for renewable energy and efficiency, visit: www.CleanEnergyVictoryBonds.org