File:Vostok Petit data.svg

Size of this PNG preview of this SVG file: 800 × 600 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 768 pixels | 1,280 × 960 pixels | 2,560 × 1,920 pixels.

Original file (SVG file, nominally 1,024 × 768 pixels, file size: 81 KB)

This is a file from the Wikimedia Commons. Information from its description page there is shown below.
Commons is a freely licensed media file repository. You can help.

Summary

DescriptionVostok Petit data.svg	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. العربية: مخطّطٌ يُبيّن علاقة ثاني أوكسيد الكاربون ودرجة الحرارة وتركيز الغبار في قالب جليد فوستوك (بالإنجليزيّة: Vostok ice core) خلال 450,000 سنة الماضيّة
Date	20 June 2010
Source	Own work based on: Vostok-ice-core-petit.png by NOAA
Author	Original: Unknown Vector: Autopilot
Other versions	Derivative works of this file: Vostok Petit data hu.svg Vostok Petit data-ml.svg
SVG development InfoField	The SVG code is valid. This plot was created with Gnuplot. This file is translated using SVG `switch` elements: all translations are stored in the same file.

Data sets used are:

This plot was created with Gnuplot.

Source code

Gnuplot code

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 [-425:0] [-10:4] \
        "deutnat.txt" \
        using (-$2/1000):4 \
        title "Temperature variation (ΔT)" \
        ls 3 \
        with lines

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

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

Explanation

After executing gnuplot, the resulting SVG file was manually changed to
* remove the negative signs for the x axis values
* change the [[:w:hyphen-minus|hyphen-minus]] characters in the temperature axis values to proper minus sign characters

I, the copyright holder of this work, hereby publish it under the following licenses:

	This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.

	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 give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
	This licensing tag was added to this file as part of the GFDL licensing update.CC BY-SA 3.0truetrue

Permission is granted 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. A copy of the license is included in the section entitled GNU Free Documentation License.

You may select the license of your choice.

Original upload log

This image is a derivative work of the following images:

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/Time	Dimensions	User	Comment
current	13:01, 25 June 2021	1,024 × 768 (81 KB)	Matěj Orlický	File uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for cs.
	22:25, 30 November 2013	1,024 × 768 (77 KB)	SeL media	time axis reversed
	17:39, 25 September 2011	1,024 × 768 (309 KB)	Hel-hama	text improved
	03:07, 27 April 2011	1,024 × 768 (83 KB)	Awickert	Didn't realize that it was a draw-on box instead of a measuring-box. Take 3!
	03:05, 27 April 2011	1,024 × 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 2011	1,024 × 768 (75 KB)	Awickert	Manually moved axes in Inkscape such that the three plots line up with one another
	13:25, 20 June 2010	1,024 × 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