File:CO2-Mauna-Loa (2).png

Summary

Description
English: 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.
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.
Author
This file is lacking author information.
Other versions
Category:Media lacking author information

Licensing

Public domain
This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration, taken or made as part of an employee's official duties.

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Category:PD US NOAA#CO2-Mauna-Loa%20(2).png

Original upload log

The original description page was here. All following user names refer to en.wikipedia.
  • 2006-04-02 12:18 Rock nj 600×475× (11204 bytes) 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.
  • 2004-12-15 22:50 Shimmin 690×524× (40685 bytes) {{PD}}
Category:Keeling curves
Category:Files with no machine-readable author Category:Keeling curves Category:Media lacking author information Category:PD US NOAA