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392.04ppm
Atmospheric CO2 for June 2010
Preliminary data released July 8, 2010 (Mauna Loa Observatory NOAA-ESRL)
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CO2 Data Set: |
Original data file created by NOAA on Wednesday July 7, 2010 (10:15:05) |
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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? |
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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...
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In 2009, the average concentration for atmospheric CO2 (Mauna Loa Observatory) was 387.35 parts per million (ppm). In 2008, it was 385.57 ppm.
Since the 1958 start of precise CO2 measurements in the atmosphere, the annual mean concentration of CO2 has only increased from one year to the next. There have been no decreases in annual CO2 levels since direct instrument measurements began. The following CO2 data provides a snapshot of the longest-running, high-precision instrument record for atmospheric CO2: |
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Carbon Budget 2008
The Global Carbon Project (GCP) released Carbon Budget 2008 in November 2009. This 2008 update of the global carbon budget and trends was published in Nature Geoscience.
The 2008 Carbon Budget shows that carbon dioxide emissions from human activities rose ~2 per cent in 2008 to an all-time high of 1.3 tonnes of carbon per capita per year. GCP scientists say that rising emissions from fossil fuels last year were caused mainly by increased use of coal but there were minor decreases in emissions from oil and deforestation. The GCP also estimates that the growth in emissions from developing countries increased in part due to the production of manufactured goods consumed in developing countries.
>>>> More about the Global Carbon Budget |
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CO2 Removal by Natural Sinks
Global Carbon Project Natural land and ocean CO2 sinks removed 57% (or 5.3 PgC per year) of all CO2 emitted from human activities during the 1958-2008. During this period the size of the natural sinks has grown but at a slower pace than emissions have grown, although year to year variability is large. This implies a decline in the efficiency of the sinks in removing atmospheric CO2 over time (from 60% fifty years ago down to 55% in recent years), a trend expected to continue the future. Models suggest the sinks are responding to climate change and variability.
>>>>read more>>>>
GCP Carbon Budget '08 | CO2 removal by natural sinks
GCP Carbon Budget '08 | CO2 ocean sink
GCP Carbon Budget '08 | CO2 land sink |
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