http://www.esrl.noaa.gov/gmd/ccgg/trends Recent Atmospheric CO2 Values from the NOAA Earth System Research Laboratory Tue, 21 May 2013 05:00:27 MDT en http://www.esrl.noaa.gov/gmd/ccgg/trends/weekly.html 2013-5-12 Up-to-date weekly average CO2 at Mauna Loa <br> Week of May 12, 2013: 399.73 ppm <br> Weekly value from 1 year ago: 397.19 ppm <br> Weekly value from 10 years ago: 378.14 ppm <br> Tue, 21 May 2013 05:00:26 MDT http://www.esrl.noaa.gov/gmd/ccgg/trends/weekly.html 2013-5-12 Up-to-date weekly average CO2 at Mauna Loa <br> Week of May 12, 2013: 399.72 ppm <br> Weekly value from 1 year ago: 397.19 ppm <br> Weekly value from 10 years ago: 378.14 ppm <br> Mon, 20 May 2013 05:00:34 MDT http://www.esrl.noaa.gov/gmd/ccgg/trends/weekly.html 2013-5-12 Up-to-date weekly average CO2 at Mauna Loa <br> Week of May 12, 2013: 399.71 ppm <br> Weekly value from 1 year ago: 397.19 ppm <br> Weekly value from 10 years ago: 378.14 ppm <br> Sun, 19 May 2013 05:00:42 MDT http://www.esrl.noaa.gov/gmd/ccgg/trends/weekly.html 2013-5-5 Up-to-date weekly average CO2 at Mauna Loa <br> Week of May 5, 2013: 399.50 ppm <br> Weekly value from 1 year ago: 397.07 ppm <br> Weekly value from 10 years ago: 377.85 ppm <br> Sat, 18 May 2013 05:00:26 MDT http://www.esrl.noaa.gov/gmd/ccgg/trends/ 2013-4 Recent Mauna Loa CO2 April 2013: 398.40 ppm. <br> Recent global CO2 March 2013: 396.52 ppm Fri, 17 May 2013 11:04:59 MDT http://www.esrl.noaa.gov/gmd/ccgg/trends/weekly.html 2013-5-5 Up-to-date weekly average CO2 at Mauna Loa <br> Week of May 5, 2013: 399.50 ppm <br> Weekly value from 1 year ago: 397.07 ppm <br> Weekly value from 10 years ago: 377.85 ppm <br> Fri, 17 May 2013 11:04:59 MDT http://www.esrl.noaa.gov/gmd/ccgg/trends/weekly.html 2013-5-5 Up-to-date weekly average CO2 at Mauna Loa <br> Week of May 5, 2013: 399.50 ppm <br> Weekly value from 1 year ago: 397.07 ppm <br> Weekly value from 10 years ago: 377.85 ppm <br> Thu, 16 May 2013 05:00:33 MDT http://www.esrl.noaa.gov/gmd/ccgg/trends/weekly.html 2013-5-5 Up-to-date weekly average CO2 at Mauna Loa <br> Week of May 5, 2013: 399.50 ppm <br> Weekly value from 1 year ago: 397.07 ppm <br> Weekly value from 10 years ago: 377.85 ppm <br> Wed, 15 May 2013 05:00:36 MDT http://www.esrl.noaa.gov/gmd/ccgg/trends/weekly.html 2013-5-5 Up-to-date weekly average CO2 at Mauna Loa <br> Week of May 5, 2013: 399.50 ppm <br> Weekly value from 1 year ago: 397.07 ppm <br> Weekly value from 10 years ago: 377.85 ppm <br> Tue, 14 May 2013 05:00:37 MDT