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File:AYool CCl4 history.png

Description
English: Time series of atmospheric concentrations of carbon tetrachloride from 1908 to 2003. Mixing ratio concentrations are shown for the northern and southern hemispheres, and are expressed as parts per trillion (ppt). The data are plotted here using MATLAB.

The published source of data for the figure is

Walker, S. J., R. F. Weiss & P. K. Salameh (2000) Reconstructed histories of the annual mean atmospheric mole fractions for the halocarbons CFC-11, CFC-12, CFC-113 and carbon tetrachloride. Journal of Geophysical Research 105, 14285—14296.

The data (including error estimates and updates) are available online from the atmospheric halocarbon page at University of California.
Date 22 March 2007 (original upload date)
Source Transferred from en.wikipedia; transferred to Commons by User:Teratornis using CommonsHelper.
Author Original uploader was Plumbago at en.wikipedia
Permission
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w:en:Creative Commons
attribution share alike		 This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Attribution: Plumbago at en.wikipedia
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
  • share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.
This licensing tag was added to this file as part of the GFDL licensing update.
w:en:Creative Commons
attribution		 This file is licensed under the Creative Commons Attribution 2.5 Generic license.
Attribution: Plumbago at en.wikipedia
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
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This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
File change date and time 11:17, 22 March 2007
Horizontal resolution 118.11 dpc
Vertical resolution 118.11 dpc

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