Image:Co2-temperature-plot.svg

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[edit] Summary

This figure shows historical CO2 (right axis) and delta-deuterium (a temperature proxy; left axis) records based on Antarctic ice cores, providing data for the last 650,000 years. Note that deuterium levels differ between Vostok and EPICA ice cores and are therefore plotted on separate scales to maintain the relative levels. Atmospheric carbon dioxide levels are on the same scale throughout.

[edit] Licensing

This figure was produced by Leland McInnes using gnuplot and Inkscape and is licensed under the GFDL. All data is from publicly available sources.

I, the creator of this work, hereby grant the permission to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
Subject to disclaimers.

[edit] Data Sources

(orange) Vostok temperature data: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/vostok/deutnat.txt
(light blue) Vostok CO2 data:ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/vostok/co2nat.txt
(red) EPICA DomeC temperature data: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc_dd.txt
(blue) EPICA DomeC CO2 data:ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc-co2-650k-390k.txt
Current CO2 level: http://en.wikipedia.org/wiki/Carbon_dioxide#Concentrations_of_CO2_in_atmosphere

[edit] Related images

Expanded record of CO₂ from the last 50 years at Mauna Loa	CO₂ at Mauna Loa since 1958. [1] [2]	Trends of major greenhouse gases.	Solar variation and greenhouse gases during 420,000 years.
Recent global CO₂ emissions, logarithmic scale.	Carbon dioxide variations during the last 550 million years.	400,000 year Carbon dioxide variation.

File history

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(del) (cur) 00:29, 14 January 2007 . . Leland McInnes (Talk | contribs) . . 1052×744 (40,671 bytes) ((reverse direction of time scale))
(del) (rev) 17:22, 4 November 2006 . . Leland McInnes (Talk | contribs) . . 1052×744 (40,730 bytes)
(del) (rev) 04:07, 4 November 2006 . . Leland McInnes (Talk | contribs) . . 1052×744 (42,937 bytes)
(del) (rev) 04:03, 4 November 2006 . . Leland McInnes (Talk | contribs) . . 1052×744 (42,931 bytes) (One last try at entering the title)
(del) (rev) 03:56, 4 November 2006 . . Leland McInnes (Talk | contribs) . . 1052×744 (39,678 bytes)
(del) (rev) 01:04, 4 November 2006 . . Leland McInnes (Talk | contribs) . . 1052×744 (40,314 bytes)
(del) (rev) 01:02, 4 November 2006 . . Leland McInnes (Talk | contribs) . . 1052×744 (40,272 bytes) (This figure shows apparent correlations between historical CO2 and temperature records based on Antarctic ice cores, providing data for the last 650,000 years. Note that deuterium levels differ between Vostok and EPICA ice cores and are therefore plotted )