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  • 21 Aug, 2019

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File:Common Era Temperature.svg
The 2000 year record is computed in https://www.nature.com/articles/s41561-019-0400-0 using a wide set of proxies that have been vetted by the Pages2k Consortium . They include tree ring data, data from corals and ice core data. A direct link to data is at https://figshare.com/articles/Reconstruction_ensemble_median_and_95_range/8143094

The observational data set is pulled from NASA: https://climate.nasa.gov/vital-signs/global-temperature/

NASA data is adjusted up by 0.188 degrees C since the IPCC says 2006 to 2015 is 0.87 degrees warmer than 1850 to 1900 and NASA averages 0.682 in that time frame.

The 2000 year temperature is adjusted up by 0.287667, which is the NASA adjustment from above plus 0.099667 for the NASA average from 1961 to 1990 (the baseline for the 2000 year data set).
Date Source Own work Author Efbrazil Other versions
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Work is derived from [Temperature reconstruction last two millennia.svg] by Femke Nijsse

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  1. ↑ Pages2k Consortium (2017). "A global multiproxy database for temperature reconstructions of the Common Era". Scientific Data 4: 170088. DOI:10.1038/sdata.2017.88. ISSN 2052-4463.

Captions

Global temperature reconstruction of the last two millennia with instrumental temperature from 1880 to 2020

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23 February 2020

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Date/TimeThumbnailDimensionsUserComment
current15:28, 18 June 2024Thumbnail for version as of 15:28, 18 June 2024960 × 720 (119 KB)Jojit fbFile uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for tl.
07:31, 17 June 2024Thumbnail for version as of 07:31, 17 June 2024960 × 720 (119 KB)GinawaSaHaponFile uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for tl.
03:31, 20 March 2024Thumbnail for version as of 03:31, 20 March 2024960 × 720 (118 KB)이강철 (WMKR)File uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for ko.
09:41, 21 August 2022Thumbnail for version as of 09:41, 21 August 2022960 × 720 (116 KB)TAKAHASHI ShuujiFile uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for ja.
13:01, 17 January 2021Thumbnail for version as of 13:01, 17 January 2021960 × 720 (114 KB)EfbrazilUpdated with 2020 data
21:36, 21 August 2020Thumbnail for version as of 21:36, 21 August 2020960 × 720 (114 KB)EfbrazilFixed background to fill image
19:27, 31 July 2020Thumbnail for version as of 19:27, 31 July 2020960 × 720 (114 KB)EfbrazilAdded fahrenheit to far side of graph for easier consumption by US audiences
15:54, 13 May 2020Thumbnail for version as of 15:54, 13 May 2020960 × 701 (111 KB)NyqDecapitalized common noun
17:56, 2 April 2020Thumbnail for version as of 17:56, 2 April 2020960 × 701 (111 KB)EfbrazilAll data is now a 5 year moving average (indirect measurement was a 30 year average)
00:11, 2 April 2020Thumbnail for version as of 00:11, 2 April 2020960 × 701 (110 KB)Efbrazilfixing year 0 offset bug
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