Mauna Loa CO2

March 2016

 

NOAA-ESRL

SCRIPPS UCSD

March 2017

407.18

407.05 ppm

March 2016

404.83

404.86 ppm

March 2015

401.54

401.51 ppm

Last Update: April 5, 2017
April 3, 2017
View Data: NOAA  |  CO2.Earth Scripps

Mauna Loa Observatory (MLO)  |  Atmospheric CO2
monthly mean concentrations  |  ppm = parts per million

 

Two independent records of CO2 changes are maintained in parallel at Mauna Loa.   A graph showing the two records together is available at the bottom of the Scripps CO2 Program website

Use the tabs below to view the latest monthly CO2 data, charts and related links.

 

CO2 Past.  CO2 Present.  CO2 Future.