File:CO2-variations hg.svg

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CO2-variations_hg.svg‎ (SVG file, nominally 256 × 256 pixels, file size: 9 KB)

Description

Simplified drawing of the history and future of the carbon dioxide concentration in the atmosphere

Left part of the diagramm has a logarithmic scale showing the last 100 million years. Present mean CO2 concentration (middle) is with about 380 ppm (2006) already higher than during the last 2 million years. The right side of the diagramm has a linear scale representing the future 300 years. Also the ordinate has a non-linear scale with a range of CO2 values from 0 to 5000 ppm (parts per million).

CO2 concentration during the Cretaceous (> 60 million years) was much higher than today. It descreased with temperature during the Tertiary (60-2 million years) when the earth was cooling down into the recent ice age. The Quaternary is represented by climatic (i.e. CO2) variations from 2 million years until today. The arrow pointing into the future shows the natural development; the rapid increase in CO2, predicted for the next 300 years, is due to the increased burning of fossil fuel by humankind, starting with the industrial age. The area of the question mark shows the uncertainty in predicting future carbon dioxide concentrations.
Date

5 November 2006(2006-11-05)
Source

Own work
Author

Hannes Grobe 21:17, 5 November 2006 (UTC)
Permission
(Reusing this image)		 Own work, share alike, attribution required (Creative Commons CC-BY-SA-2.5)
Other versions
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I, the copyright holder of this work, hereby publish it under the following license:
Creative Commons license
Creative Commons Attribution Creative Commons Share Alike		 This file is licensed under the Creative Commons Attribution ShareAlike 2.5 License. In short: you are free to share and make derivative works of the file under the conditions that you appropriately attribute it, and that you distribute it only under a license identical to this one. Official license

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Date/TimeThumbnailDimensionsUserComment
current19:58, 6 October 2007Thumbnail for version as of 19:58, 6 October 2007256×256 (9 KB)Hgrobe (talk | contribs) ({{Information |Description=to be done |Source=own work |Date=2007-10-07 |Author=~~~~ |Permission=Own work, share alike, attribution required (Creative Commons CC-BY-SA-2.5) |other_versions= }} {{self|cc-by-sa-2.5}})
21:17, 5 November 2006No thumbnail0×0 (18 KB)Hgrobe (talk | contribs) ({{Information |Description= |Source=own work |Date=2006-11-05 |Author=~~~~ |Permission=Own work, share alike, attribution required (Creative Commons CC-BY-SA-2.5) |other_versions= }} {{self|cc-by-sa-2.5}})

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