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Restren:Carbon Dioxide 800kyr.svg

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Berrskrif

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Deskrifans
English: This figure shows the variations in concentration of carbon dioxide (CO2) in the atmosphere during the last 800 thousand years. Throughout most of the record, the largest changes can be related to glacial/interglacial cycles within the current ice age. Although the glacial cycles are thought to be directly caused by changes in the Earth's orbit (i.e. Milankovitch cycles), these changes also influence the carbon cycle, which in turn feeds back into the glacial system.

Since the Industrial Revolution, circa 1800, the burning of fossil fuels has caused a rapid increase of CO2 in the atmosphere, reaching levels unprecedented in the last million years. This increase has been implicated as a primary cause of global warming.

The spacing of carbon dioxide samples varies through time. At the present, the atmosphere is sampled routinely and complete annual averages are available. From the four ice cores presented on this plot the sampling varies from as rapid as one point every few years (recent parts of the Law Dome record) to as sparse as one sample every few thousand years (oldest parts of the Vostok and Dome C records). In principle, the sparse sampling in the oldest parts of the record could hide abrupt excursions; however, isotopic measurements of ice cores (which are made continuously along the entire core) and our current understanding of the rates of natural processes for creating and removing carbon dioxide from the atmosphere make it unlikely that any positive excursions in carbon dioxide comparable to the Industrial Revolution have happened during the interval presented above.

This figure is an update on File:Carbon Dioxide 400kyr.png, originally made by User: Dragons flight originally made by Dragons flight. The explanation of the figure is also derived from that work. Two new data sets are added: the CO2 measurements from 2004 to 2019 and additional data from Dome C. Some other data sets were omitted for simplicity.

The code to produce this figure is freely available on Github: https://github.com/Femkemilene/Global-Warming-Figures. The first few lines of the code make it easy to change the language.
Dedhyans
Pennfenten Ober honan
Awtour Femke Nijsse
Other versions File:Carbon Dioxide 800kyr.svg has 4 embedded translations.
  • id (Indonesian)
    id (Indonesian)
  • ja (Japanek)
    ja (Japanek)
  • nl (Iseldiryek)
    nl (Iseldiryek)
  • de (Almaynek)
    de (Almaynek)
  • French version
    French version

Data sources

  1. (light blue) Dome C ice core: Lüthi, D., M. Le Floch, B. Bereiter, T. Blunier, J.-M. Barnola, U. Siegenthaler, D. Raynaud, J. Jouzel, H. Fischer, K. Kawamura, and T.F. Stocker (2008). "High-resolution carbon dioxide concentration record 650,000-800,000 years before present". Nature 453: 379-382. DOI:10.1038/nature06949.
  2. (dark blue) Vostok ice core: Fischer, H., M. Wahlen, J. Smith, D. Mastroianni, and B. Deck (1999). "Ice core records of Atmospheric CO2 around the last three glacial terminations". Science 283: 1712-1714.
  3. (navy blue) Taylor Dome ice core: Indermühle, A., E. Monnin, B. Stauffer, T.F. Stocker, M. Wahlen (1999). "Atmospheric CO2 concentration from 60 to 20 kyr BP from the Taylor Dome ice core, Antarctica". Geophysical Research Letters 27: 735-738.
  4. (green) Law Dome ice core: D.M. Etheridge, L.P. Steele, R.L. Langenfelds, R.J. Francey, J.-M. Barnola and V.I. Morgan (1998) "Historical CO2 records from the Law Dome DE08, DE08-2, and DSS ice cores" in Trends: A Compendium of Data on Global Change. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A.
  5. (black) Mauna Loa Observatory, Hawaii: Keeling, C.D. and T.P. Whorf (2004) "Atmospheric CO2 records from sites in the SIO air sampling network" in Trends: A Compendium of Data on Global Change. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A.

Leshyans

I, the copyright holder of this work, hereby publish it under the following license:
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askrifans ranna kehaval
Yma an restren ma yn-dann an leshyans Creative Commons Attribution-Share Alike 3.0 Unported.
Yma'n gwir dhywgh:
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Yn-dann an ragselyow a syw:
  • askrifans – Res yw dhywgh ri askrifans gwiw, provia kevren dhe'n lecyans, ha meneges mar peu chanjyow gwrys. Hwi a yll gul hemma yn fordh resonus a vynnowgh, mes ny yllir y wul yn fordh a broffo synser an lecyans dh'agas skoodhya po agas devnydh.
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author name string Sowsnek: Femke Nijsse
Wikimedia username Sowsnek: Femkemilene

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copyrighted Sowsnek

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27 Me 2018

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Istori an restren

Klyckyewgh war dhedhyans/eur rag gweles an folen dell o an termyn na.

Dedhyans/EurSkeusennikMynsowDevnydhyerKampol
a-lemmyn11:18, 16 Me 2023Skeusennik an versyon a-dhia 11:18, 16 Me 2023502 × 339 (52 KB)PedalitoFile uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for de.
18:05, 19 Ebrel 2022Skeusennik an versyon a-dhia 18:05, 19 Ebrel 2022502 × 339 (50 KB)JiaminglimjmFile uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for id.
03:41, 9 Genver 2022Skeusennik an versyon a-dhia 03:41, 9 Genver 2022502 × 339 (48 KB)TAKAHASHI ShuujiFile uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for ja.
14:11, 17 Kevardhu 2021Skeusennik an versyon a-dhia 14:11, 17 Kevardhu 2021502 × 339 (46 KB)FemkeFile uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for nl.
15:44, 11 Gwynngala 2020Skeusennik an versyon a-dhia 15:44, 11 Gwynngala 2020502 × 339 (41 KB)FemkeRemove the circle for the inset. I changed the axis limits so that the line doesn't cross the year 2000 any more. Made the connecting lines dashed.
16:28, 29 Meurth 2020Skeusennik an versyon a-dhia 16:28, 29 Meurth 2020502 × 339 (41 KB)FemkeAgain, spaces seem to be removed when I try to make text editable.
16:27, 29 Meurth 2020Skeusennik an versyon a-dhia 16:27, 29 Meurth 2020502 × 339 (41 KB)Femkefontsize increase, update to 2019, colour change for one of the lines, fatter arrow.
13:22, 10 Metheven 2018Skeusennik an versyon a-dhia 13:22, 10 Metheven 2018509 × 344 (68 KB)FemkeChanged the background color to a more neutral color. Changed the rectangle to oval to indicate that the inset figure zooms in further than the rectangle showed before.
11:58, 27 Me 2018Skeusennik an versyon a-dhia 11:58, 27 Me 2018509 × 344 (68 KB)FemkeUser created page with UploadWizard

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