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Carbon Dioxide Levels at Mauna Loa Observatory, Monthly, February 2012-2017 [JSON] [iframe] [PNG]

Chart uploaded on March 13, 2017.

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68% of the Earth's land is north of the equator in the Northern Hemisphere, while only 32% is south of the equator in the Southern Hemisphere. During the summer in the Northern Hemisphere, there are a lot more plants that become green and turn carbon dioxide and sunlight into sugars using chlorophyll.

This means that global carbon dioxide levels drop roughly 6 PPM between the Northern Hemisphere growing months of May through September. However, between October and April, global levels of carbon dioxide increase 7-10 PPM, which is why over time global concentrations of carbon dioxide are increasing -- sometimes as much as 3.64 PPM, as was the case between 2015 and 2016.

In April 2014 was the first time carbon dioxide levels reached 400 PPM, dipping down that summer, while and May 2015 was the last time that carbon dioxide levels will ever dip below 400 PPM in our live times.

Data Source: Mauna Loa Observatory Readings, 2012-2017. ftp://aftp.cmdl.noaa.gov/products/trends/co2/co2_mm_mlo.txt

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