Image:CO2-Mauna-Loa.png

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CO2-Mauna-Loa.png‎ (600 × 475 pixels, file size: 11 KB, MIME type: image/png)

This work is in the public domain in the United States because it is a work of the United States Federal Government under the terms of Title 17, Chapter 1, Section 105 of the US Code. See Copyright.
Note: This only applies to works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision.

A graph depicting CO2 levels. The cause for the yearly rise and fall is the annual cycle of plant respiration. Since there is more landmass in the northern hemisphere, the cycle is dominated by CO2 drawdown by photosynthesis during the northern hemisphere summer; in winter the plants become a net source.

Image created by Shimmin and released into the PD.

Data from C.D. Keeling, T.P. Whorf, Scripps Institution of Oceanography (SIO).

Raw data is available from http://cdiac.esd.ornl.gov/ftp/trends/co2/maunaloa.co2.

[edit] Related image

CO₂ at Mauna Loa since 1958. [1] [2]

Trends of major greenhouse gases.

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	Date/Time	Dimensions	User	Comment
current	12:18, 2 April 2006	600×475 (11 KB)	Rock nj (Talk \| contribs)	(From NOAA website. Latest CO2 information, as of 2006. I think this is work of the U.S. Federal government and copyright should not be a problem.)
	22:50, 15 December 2004	690×524 (40 KB)	Shimmin (Talk \| contribs)	({{PD}})