State of Our Climate Atmospheric Greenhouse Gas concentrations
May 2016 NOAA atmospheric greenhouse gas index for 2015. Extracts below. The NOAA reports that the atmospheric concentrations of all three main greenhouse gases are accelerating higher.
20 April 2016 Scripps ' Levels exceeded 409 parts per million for the first time in recorded history this month. NOAA 10 Mar 2016 'Carbon dioxide levels are increasing faster than they have in hundreds of thousands of years. It’s explosive compared to natural processes'. Today’s human-made CO2 increase is 200 times faster, a dramatic rate compared to natural processes, Pieter Tans, leader of NOAA’s Global Greenhouse Gas Reference Network
Oct 2016 Research NOAA Methane emissions from fossil fuels are much higher than current estimates. The post 2007 methane increase is from food production (cows, wetland rice paddies and/or warming natural wetlands
WMO Nov 2016 GHG Bulletin all 3 atmospheric GHG levels increased more than their 10 year annual average
Nov 2016 Provisional WMO Statement on the Status of the Global Climate in 2016. GHG section 'Annual average global carbon dioxide concentrations in 2015 reached 400 parts per million (ppm) for the first time. '
Dec 2016. Press release and links CO2 rate of atmospheric CO2 increase is unprecedented in Earth history at 3 ppm/year 2015 and 2016. Atmospheric CO2 concentration history: it is also the highest in 15-20 million years.