File:Vostok Petit data.svg

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Full resolution ‎(SVG file, nominally 1,024 × 768 pixels, file size: 309 KB)
Description

La bildo estas kopiita de wikipedia:en. La originala priskribo estas: Graph of CO2 (Green graph), temperature (Blue graph), and dust concentration (Red graph) measured from the Vostok, Antarctica ice core as reported by Petit et al., 1999. Higher dust levels are believed to be caused by cold, dry periods.

The Earth's orbital eccentricity, tilt, and precession vary in a pattern over thousands of years. The IPCC notes that Milankovitch cycles drove the ice age cycles; CO2 followed temperature change "with a lag of some hundreds of years" (visible on a graph more zoomed in than this); and that as a feedback amplified temperature change. Among other factors, CO2 is more soluble in colder than in warmer waters.
Date 2010-06-20 13:24 (UTC)
Source
Author
Other versions

Derivative works of this file:
Lissajous small.svg
 This vector image was created with gnuplot.
Applications-graphics.svg This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Generated as svg. The original can be viewed here: Vostok-ice-core-petit.png. Modifications made by Autopilot.

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Data sets used are:

gnuplot commands:

unset multiplot
set term svg size 1024,768
set output "vostok-data.svg"

set border 3
set xtics nomirror
set ytics nomirror
unset xlabel
unset ylabel

set grid y
set multiplot layout 3,1

set ylabel "°C"
plot [0:425] \
        "deutnat.txt" \
        using ($2/1000):4 \
        title "Temperature variation (ΔT)" \
        ls 3 \
        with lines

set ylabel "ppmv"
plot [0:425] \
        "co2nat.txt" \
        using ($1/1000):2 \
        title "Carbon Dioxide" \
        ls 2 \
        with lines

set xlabel "Thousands of years ago"
set ylabel "ppm"
plot [0:425] \
        "dustnat.txt" \
        using ($1/1000):2 \
        title "Dust concentration" \
        ls 1 \
        with lines


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Original upload log[edit]

This image is a derivative work of the following images:

  • File:Vostok-ice-core-petit.png licensed with Cc-by-sa-3.0-migrated, GFDL
    • 2006-02-15T20:38:10Z Maksim 598x441 (31557 Bytes) La bildo estas kopiita de wikipedia:en. La originala priskribo estas: Graph of [[carbon dioxide|CO2]], [[temperature]], and dust concentration measured from the [[Vostok, Antarctica]] [[ice core]] as reported by Petit et al.

Uploaded with derivativeFX

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current17:39, 25 September 2011Thumbnail for version as of 17:39, 25 September 20111,024 × 768 (309 KB)Hel-hamatext improved
03:07, 27 April 2011Thumbnail for version as of 03:07, 27 April 20111,024 × 768 (83 KB)AwickertDidn't realize that it was a draw-on box instead of a measuring-box. Take 3!
03:05, 27 April 2011Thumbnail for version as of 03:05, 27 April 20111,024 × 768 (83 KB)Awickert[Shoot - last time, picked original instead of new version to upload] Manually moved axes in Inkscape such that the three plots line up with one another
03:02, 27 April 2011Thumbnail for version as of 03:02, 27 April 20111,024 × 768 (75 KB)AwickertManually moved axes in Inkscape such that the three plots line up with one another
13:25, 20 June 2010Thumbnail for version as of 13:25, 20 June 20101,024 × 768 (75 KB)Autopilot{{Information |Description=La bildo estas kopiita de wikipedia:en. La originala priskribo estas: Graph of CO<sub>2</sub> (Green graph), temperature (Blue graph), and dust concentration (Red graph) measured from the [[Vostok, Antarc

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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.
Image title Produced by GNUPLOT 4.2 patchlevel 5
Width 1024
Height 768
Retrieved from "http://en.wikipedia.org/wiki/File:Vostok_Petit_data.svg"