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Weekly Data | Atmospheric CO2 |
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Atmospheric CO2 - Weekly Data
Mauna Loa Observatory | NOAA-ESRL Data
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Week |
Atmospheric CO2 |
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May 6 - 12, 2012
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397.17 ppm
(last week) |
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May 6 - 12, 2011
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393.05 ppm
(1 year ago) |
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May 6 - 12, 2002
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375.12 ppm
(10 years ago) |
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Atmospheric CO2 - Increase Since 1800
Mauna Loa Observatory | NOAA-ESRL Data
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As of Last Week |
Increase Since 1800 |
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May 6 - 12, 2012
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+ 113.90 ppm |
NOAA-ESRL updated weekly data on Sunday May 13, 2012. ("ppm" means parts per million)
Weekly Data & Info (Mauna Loa Observatory)
NOAA-ESRL | Weekly CO2 Data Since 1974
NOAA-ESRL | Weekly CO2 Information and Links
More Data & Info (Mauna Loa Observatory)
CO2Now | Global CO2 Board
CO2Now | Monthly CO2 Data (Mauna Loa)
CO2Now | Annual CO2 Data (Mauna Loa & Global)
CO2Now | Acceleration of Atmospheric CO2
Daily & Weekly CO2 Graph
The graph below is updated weekly by NOAA-ESRL. It shows the daily and weekly (Sunday through Saturday) mean concentration of carbon dioxide measured in the atmosphere at the Mauna Loa Observatory in Hawaii, USA.
Source: NOAA - ESRL Weekly CO2 Trends | High Resolution PDF
Note
Recent data is preliminary pending recalibrations of reference gases and other quality control checks. |