“Every breath you take and every move you make; every bond you break, every step you take, I’ll be watching you”
CO2 levels reach new global monthly record of 400ppm
Yet another greenhouse gas benchmark has been reached globally.
Global atmospheric carbon dioxide (CO2) concentrations have reached a new monthly record of 400 parts per million (ppm), the US National Oceanic and Atmospheric Administration (NOAA) announced.
“We first reported 400 ppm when all of our Arctic sites reached that value in the spring of 2012. In 2013 the record at NOAA’s Mauna Loa Observatory first crossed the 400 ppm threshold. Reaching 400 parts per million as a global average is a significant milestone,” said the lead scientist of NOAA’s Global Greenhouse Gas Reference Network.
CO2 has risen about 120 parts per million since preindustrial times, with about 50 percent of the increase occurring since 1980.
On April 3, FIRE-EARTH forecast that the weekly average atmospheric CO2 at Mauna Loa could hit 400ppm by May 2013.
Last 5 days of preliminary daily average CO2
May 06 – 404.34
May 05 – 404.13
May 04 – Unavailable
May 03 – 403.63
May 02 – 403.59
Up-to-date weekly average CO2 at Mauna Loa
Week beginning on April 26, 2015: 403.78 ppm
Weekly value from 1 year ago: 401.73 ppm
Weekly value from 10 years ago: 382.52 ppm
Last updated: May 7, 2015
Recent Monthly Average Mauna Loa CO2
April 2015: 403.26 ppm
April 2014: 401.29 ppm
Last updated: May 5, 2015
Recent Global CO2
March 2015: 400.83 ppm
March 2014: 398.10 ppm
Last updated: May 5, 2015
Related Links
- Weekly Average CO2 at Mauna Loa Tops 400ppm June 4, 2013
- CO2 Tops 400ppm at Mauna Loa as Forecast May 11, 2013
- 400 PPM April 3, 2013