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382.98ppm
Atmospheric CO2 for October 2008
See the note below about a recent correction in the reported data for October 2008
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CO2 Data Set: |
Updated Monday November 19, 2008 (17:21:25)
Note about October 2008 Data: If you noticed that Mauna Loa CO2 for October 2008 had previously been reported as 384.75 parts per million, you may be wondering why it has changed to 382.98 parts per million. Here's why.
Originally, on November 3, 2008, NOAA reported 384.75 for October 2008 for atmospheric CO2 as measured at the Mauna Loa Observatory in Hawaii. On November 19, 2008, NOAA reported a correction in the data. Click here for more details in the NOAA notes and change log. |
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Measuring Location: |
Mauna Loa Observatory, Hawaii |
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Data Source: |
Earth Systems Research Laboratory (ESRL) / National Oceanic and Atmospheric Administration (NOAA) |
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Why is CO2 significant? |
Carbon dioxide (CO2) is the chief greenhouse gas that results from human activities and causes global warming and climate change. To see whether enough is being done at the moment to solve these global problems, there is no single indicator as complete and current as the monthly updates for atmospheric CO2 from the Mauna Loa Observatory. |
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What is the current trend? |
At least since the 1958 start of atmospheric CO2 measurements with high-precision instruments, the rate of increase in atmospheric carbon dioxide concentration has accelerated from decade to decade. The latest atmospheric CO2 data is consistent with a continuation of this long-standing trend. |
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What level is safe? |
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 The world's most current data for atmospheric CO2 is from measurements at the Mauna Loa Observatory in Hawaii. These high-precision measurements were started by Dave Keeling (shown in the photo) in March 1958.
Today, the monthly average concentration of CO2 in the atmosphere is published by the National Oceanic and Atmospheric Administration (NOAA) within a week after each month ends. The source data is organized into a table and republished here at CO2Now.org so more people can see the latest CO2 level and the important CO2 trend. The table includes the full Mauna Loa instrument record for atmospheric CO2.
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Read more... [Current Data for Atmospheric CO2]
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