The Tipping Point and Recent Global Warming

The monthly average measured atmospheric carbon dioxide at Mauna Loa for January 2014 is 397.8 parts per million compared with 395.54 parts per million in January 2013. According to the Earth Systems Research Laboratory at Mona Loa the monthly average measured atmospheric carbon dioxide globally averaged over marine surface sites in December 2013 was 397.21 parts per million. Continue reading