Fil:Vostok Petit data.svg
Beskrivelse
| Beskrivelse |
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 |
| Dato | |
| Kilde | Own work based on: Vostok-ice-core-petit.png fra NOAA |
| Opphavsperson |
Original: Ukjent Vektor: |
| Andre versjoner |
Derivative works of this file: |
| SVG utvikling |  This file is translated using SVG switch elements: all translations are stored in the same file. |
Data sets used are:
- ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/vostok/deutnat.txt
- ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/vostok/co2nat.txt
- ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/vostok/dustnat.txt
Kildekode
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
  
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Denne filen er lisensiert under lisensen Creative Commons Navngivelse-DelPåSammeVilkår 3.0 Unported | |
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| Dette lisensmerket ble lagt til filen som del av lisensoppdateringen av GFDL. |
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Det tillates at dette dokumentet kopieres, distribueres og/eller modifiseres under retningslinjene som beskrevet i GNU fri dokumentasjonslisens, versjon 1.2 eller senere utgave utgitt av Free Software Foundation; med alle seksjoner, uten noen forsidetekster og baksidetekster. En kopi av lisensen er inkludert i avsnittet GNU Free Documentation License. |
Orginal opplastningslogg
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.
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| Dato/klokkeslett | Miniatyrbilde | Dimensjoner | Bruker | Kommentar | |
|---|---|---|---|---|---|
| nåværende | 20. jan. 2025 kl. 22:01 | | 1 024 × 768 (81 KB) | wikimediacommons>Kurmanbek | File uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for tr. |
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