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File:Holocene Temperature Variations.png

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is also notable that different locations appear to take different amounts of time to reach typical Holocene conditions following the last glacial termination. Scientists generally agree that warming concluded in the far Southern Hemisphere earlier than in most other regions. In part, the prolonged climate change may be related to prolonged changes in
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temperature proxies and were scaled as described in Notes below. Each curve was smoothed by a Gaussian weighted filter to produce a history of the Holocene temperature variations at that site with approximately 300 year resolution (one exception, see notes). These smooth curves were adjusted to have the same mean over the interval 100-6000 years
1325: 1260: 1465: 247:. During the Holocene itself, there is general scientific agreement that temperatures on the average have been quite stable compared to fluctuations during the preceding glacial period. The above average curve supports this belief. However, there is a slightly warmer period in the middle which might be identified with the proposed 1405: 521:
Petit J. R., Jouzel J., Raynaud D., Barkov N. I., Barnola J. M., Basile I., Bender M., Chappellaz J., Davis J., Delaygue G., Delmotte M., Kotlyakov V. M., Legrand M., Lipenkov V., Lorius C., Pépin L., Ritz C., Saltzman E., Stievenard M.. "Climate and Atmospheric History of the Past 420,000 years from
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on how to reconstruct global temperature variations during the Holocene, the average shown here should be understood as only a rough, quasi-global approximation to the temperature history of the Holocene. In particular, higher resolution data and better spatial coverage could significantly alter the
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KA Hughen, MGL Baillie, E Bard, A Bayliss, JW Beck, C Bertrand, PG Blackwell, CE Buck, G Burr, KB Cutler, PE Damon, RL Edwards, RG Fairbanks, M Friedrich, TP Guilderson, B Kromer, FG McCormac, S Manning, C Bronk Ramsey, PJ Reimer, RW Reimer, S Remmele, JR Southon, M Stuiver, S Talamo, FW Taylor, J
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Different regions have different sensitivity to global temperature variations, so one can reasonably argue that a true global average reconstruction requires scaling the different records to match local sensitivity. Since no scientific consensus exists for how to do this, no attempt was made to do
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lasting for centuries appears to be a common feature of many regions. Assuming the timing information from these records is reasonably accurate, it appears that in many cases large changes at any particular site may occur without correlating to similarly large changes at other sites. Secondly, it
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Because of the limitations of data sampling, each curve in the main plot was smoothed (see methods below) and consequently, this figure can not resolve temperature fluctuations faster than approximately 300 years. Further, while 2004 appears warmer than any other time in the long-term average, and
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To construct this plot, eight data sources (listed below) were selected on the basis of good temporal resolution (preferably ~100 years or less per data point) and coverage of the last 12 kyr. Six of the eight specifically reported temperature and were used as is. The other two reported unscaled
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A typical modern temperature construction involves tens or hundreds of records to ensure reasonable global coverage. Because the average shown here involves only 8 records, it is entirely plausible that significant contributions to temperature variation are being overlooked because certain large
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for comparison). It is impossible to know whether similarly large short-term temperature fluctuations may have occurred at other times but are unresolved by the available resolution. The next 150 years will determine whether the long-term average centered on the present appears anomalous with
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A small number of records, not used in this study, have been interpreted as indicating much larger temperature variation during the Holocene (5+ °C) than the records represented here. In many cases, critics have interpreted these changes to reflect seasonal, rather than annual variations in
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Because the Davis et al. pollen reconstruction is based on measurements across many sites in Europe, it is more reasonably described as a regional rather than a local temperature measurement. Similarly, it shows considerably less short-term variability than most other
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Thompson, L. G., E. Mosley-Thompson, M. E. Davis, K. A. Henderson, H. H. Brecher, V. S. Zagorodnov, T. A. Mashiotta, P.-N. Lin, V. N. Mikhalenko, D. R. Hardy, and J. Beer. "Kilimanjaro Ice Core Records: Evidence of Holocene Climate Change in Tropical Africa".
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During the earliest parts of this record, the timing uncertainty on some records may become substantial, potentially exceeding a couple hundred years. This could have the result of causing correlated features to fall out of
281:, one can comment on a number of well established inferences from the individual curves contributing to the average. First, at many locations, there exist large temperature fluctuations on multi-centennial scales. Hence, 990:– 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. 1072:: Though all of this data is published, and the methodology is similar to previously published methodology, and resulting average is similar to previously published interpretations of the Holocene, even so, no 1102:δO temperature proxy from the Kilimanjaro ice core was converted to °C by scaling its variance from the interval 100-6000 years BP to match that reported in the Vostok ice core during the same period. 706:
L. D. Stott, K. G. Cannariato, R. Thunell, G. H. Haug, A. Koutavas, and S. Lund (2004). "Decline of surface temperature and salinity in the western tropical Pacific Ocean in the Holocene epoch".
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is indicated. An inset plot compares the most recent two millennia of the average to other recent reconstructions. At the far left of the main plot, it is possible to observe the emergence of
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M. Zhao, N. A. S. Beveridge, N. J. Shackleton, M. Sarnthein, and G. Eglinton. "Molecular stratigraphy of cores off northwest Africa: Sea surface temperature history over the last 80 ka".
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A. Moberg, D. M. Sonechkin, K. Holmgren, N. M. Datsenko and W. Karlén (2005). "Highly variable Northern Hemisphere temperatures reconstructed from low- and high-resolution proxy data".
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Given the limited spatial sampling, it is unclear whether the slightly warmer period during the Holocene climatic optimum corresponds to a statistically significant difference.
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Lea, D. W., D. K. Pak, L. C. Peterson, and K. A. Hughen (2003). "Synchroneity of tropical and high-latitude Atlantic temperatures over the last glacial termination".
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scientific publication has ever combined precisely these data in precisely this way. Hence, any interpretation of that average must be regarded with skepticism.
461:. The average of these curves was then constructed, and the alignment relative to modern day determined by comparing the average over the interval 250-1900 901: 416:
for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with
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J. Schwander, J. Jouzel, C.U. Hammer, J.-R. Petit, R. Udisti, and E.W. Wolff (2001). "A tentative chronology for the EPICA Dome Concordia ice core".
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temperature, or very unusual local changes. However, the possibility exists that the current reconstruction underestimates long-term variability.
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from publicly available data and is incorporated into the Global Warming Art project. Most, but not all, of the original data is available from
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P. D. Jones and A. Moberg (2003). "Hemispheric and large-scale surface air temperature variations: An extensive revision and an update to 2001".
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The time scale for the EPICA ice core was adjusted to the EDC1 (Schwander et al. 2001), which is the preferred time scale for the last 80 kyr.
1272:"}},"text\/plain":{"en":{"P275":"GNU Free Documentation License, version 1.2 or later"}}}}": --> 413: 1415: 290:, which took till roughly 6000 years ago to reach near modern levels. Some of the differences may also reflect timescale uncertainties. 1633: 899:; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled 730: 466: 345: 341: 337: 1768: 1728: 1312: 1295: 1247: 1494: 1489: 1464: 1459: 1434: 1429: 272:
apparent long-term behavior (see below for further caveats). For another estimate of Holocene temperature fluctuations, see:
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S. Huang (2004). "Merging Information from Different Resources for New Insights into Climate Change in the Past and Future".
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This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
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Reconstructions of the last 2000 years. Three longest curves are also shown in inset plot above, with time axis reversed.
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Additional data used in inset plot and for matching temperature scale to modern values. Colors match those used in
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Because of poorer data resolution, the sediment core PL07-39PC was smoothed to an approximately 500 year average.
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If the file has been modified from its original state, some details may not fully reflect the modified file.
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van der Plicht, and CE Weyhenmeyer (2004). "Marine04 Marine Radiocarbon Age Calibration, 0–26 Cal Kyr BP".
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While any conclusions to be drawn from the long-term average must be considered crude and potentially
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time scale to calendar years by using the marine INTCAL04 calibration curve (Hughen et al. 2004).
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It is recommended to name the SVG file “Holocene Temperature Variations.svg”—then the template
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Permission is granted to copy, distribute and/or modify this document under the terms of the
469:). Note that the short-term proxies are not at all used in constructing the average itself. 268: 308: 1580: 948: 853: 1753: 465:
relative to the three short-term proxies shown in inset (for details on those plots, see:
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Composite sediment cores, interpreted sea surface temperature, Western Tropical Pacific:
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Sediment core ODP 658, interpreted sea surface temperature, Eastern Tropical Atlantic:
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EPICA community members (2004). "Eight glacial cycles from an Antarctic ice core".
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Sediment core PL07-39PC, interpreted sea surface temperature, North Atlantic:
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Anexo:Científicos escépticos sobre las aseveraciones del calentamiento global
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The time scale for sediment core ODP 658 was converted from the listed
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The following data sources were used in constructing the main plot:
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variability on multi-centennial scales throughout the course of the
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Click on a date/time to view the file as it appeared at that time.
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Vostok ice core, interpreted paleotemperature, Central Antarctica:
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P. D. Jones and M. E. Mann (2004). "Climate Over Past Millennia".
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This licensing tag was added to this file as part of the GFDL
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B. A. S. Davis, S. Brewer, A. C. Stevenson, J. Guiot (2003).
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Knowledge:Reference desk/Archives/Science/2007 September 26
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GISP2 ice core, interpreted paleotemperature, Greenland:
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Discusión:Calentamiento global/Archivo 2008 y anteriores
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Local temperature variability during the Holocene period
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Pollen distributions, interpreted temperature, Europe:
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GNU Free Documentation License, version 1.2 or later
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Creative Commons Attribution-ShareAlike 3.0 Unported
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GNU Free Documentation License, version 1.2 or later
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Creative Commons Attribution-ShareAlike 3.0 Unported
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This figure is part of a series of plots created by
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Commons is a freely licensed media file repository.
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Anexo:Línea de tiempo de la historia medioambiental
579:Kilimanjaro ice core, δO, Eastern Central Africa: 673:EPICA ice core, δDeuterium, Central Antarctica: 56:(600 × 400 pixels, file size: 52 KB, MIME type: 261:Image:Short Instrumental Temperature Record.png 1017:http://creativecommons.org/licenses/by-sa/3.0/ 71: 930: 830:Instrumental global annual data set TaveGL2v 227:The main figure shows eight records of local 1023:Creative Commons Attribution-Share Alike 3.0 243:from the last glacial period of the current 14: 1709:Knowledge:Fotowerkstatt/Archiv/2006/Oktober 973:– to copy, distribute and transmit the work 867:This image is an original work created for 1794:Usuario:Ángel Luis Alfaro/artículos/Tiempo 1719:Knowledge:Grafikwerkstatt/Archiv/2008/Juni 1047:regions (e.g. Asia) are not being sampled. 731:Image:2000 Year Temperature Comparison.png 467:Image:2000 Year Temperature Comparison.png 301:Dragons flight's Temperature Record Series 177: 1626:The following other wikis use this file: 1754:Discusión:Calentamiento global/Archivo 1 1664:Хронология на промените в околната среда 1145:Variacions de temperatura a l'Holocè.png 1106: 412:. This has several advantages; see  372:For articles related to this topic see: 211: 203: 111: 1714:Diskussion:Globale Erwärmung/Archiv/002 1521:The following 19 pages use this file: 1899:Optimum climatique de l'Holocène 1143:Derivative works of this file:  187: 102: 952:Attribution-Share Alike 3.0 Unported 925: 907:http://www.gnu.org/copyleft/fdl.html 862: 384: 1969:Optimum climatico dell'Olocene 1363: 1138: 941: 936: 815: 785: 755: 716: 685: 654: 623: 592: 560: 532: 500: 325:across many different time scales. 52:Holocene_Temperature_Variations.png 13: 1986: 1168: 1162: 522:the Vostok Ice Core, Antarctica". 395: 106: 103: 49: 2028: 1993: 1616:Template:Holocene sidebar/sandbox 1482:Lossless compression with pngout. 1167: 137: 107: 1422:Updated to show 2016 temperature 1153: 984:Under the following conditions: 947:This file is licensed under the 940: 935: 929: 883: 882: 861: 388: 216:Temperature changes observed in 70: 31: 21: 1689:Òptim climàtic de l'Holocè 1150: 472: 46:No higher resolution available. 1784:Ciclos climáticos de 1500 años 1621: 1576:Talk:Climate change/Archive 71 1571:Talk:Climate change/Archive 60 1566:Talk:Climate change/Archive 26 1536:Climate variability and change 1367: 1149: 913:GNU Free Documentation License 902:GNU Free Documentation License 892:GNU Free Documentation License 147: 26: 1: 1611:Template:Holocene sidebar/doc 1070:And the most important caveat 864:Image from Global Warming Art 661:10.1016/S0277-3791(03)00173-2 567:10.1016/S0277-3791(99)00062-1 295: 36: 1834:Holozenoko Optimo Klimatikoa 1516: 1183:Items portrayed in this file 1115:Geophysical Research Letters 852:This figure was prepared by 847: 828:(thin black line 1856-2004): 371: 329: 299: 157: 127: 117: 7: 1983: 10: 2033: 1955:Usage on it.wikipedia.org 1940:Usage on id.wikipedia.org 1930:Usage on hu.wikipedia.org 1920:Usage on gl.wikipedia.org 1865:Usage on fr.wikipedia.org 1850:Usage on fi.wikipedia.org 1840:Usage on fa.wikipedia.org 1825:Usage on eu.wikipedia.org 1815:Usage on et.wikipedia.org 1745:Usage on es.wikipedia.org 1735:Usage on eo.wikipedia.org 1725:Usage on el.wikipedia.org 1705:Usage on de.wikipedia.org 1695:Usage on cs.wikipedia.org 1680:Usage on ca.wikipedia.org 1670:Usage on bn.wikipedia.org 1660:Usage on bg.wikipedia.org 1650:Usage on az.wikipedia.org 1630:Usage on ar.wikipedia.org 1591:User:Dragons flight/Images 1541:Global surface temperature 1040: 998:same or compatible license 646:Quaternary Science Reviews 555:Quaternary Science Reviews 451: 400:image could be re-created 199: 167: 2013:File change date and time 1606:Template:Holocene sidebar 1596:User:Mporter/Climate data 1546:Holocene climatic optimum 1364: 956: 928: 414:Commons:Media for cleanup 293: 255:hence might be a sign of 249:Holocene climatic optimum 16: 1774:Registro de temperaturas 1551:Holocene glacial retreat 1152: 1080: 897:Free Software Foundation 434:Vector version available 420:vector version available 77:This is a file from the 41: 1889:Registre de température 1879:Atlantique (palynozone) 1511: 1490:22:51, 17 December 2005 1481: 1451: 1421: 630:10.1126/science.1088470 599:10.1126/science.1073198 81:. Information from its 1914:Oscillation climatique 1854:Atlanttinen lämpökausi 873:image description page 871:. Please refer to the 264:respect to this plot. 224: 209: 84:description page there 1997:Horizontal resolution 1934:Globális felmelegedés 1107:Additional References 875:for more information. 747:Reviews of Geophysics 215: 207: 182:Additional References 1964:Subboreale (periodo) 1949:Puncak Cuaca Holosen 1581:User:Ctello2/sandbox 1507:Saperaud~commonswiki 792:10.1029/2004GL019781 762:10.1029/2003RG000143 440:) does not need the 269:scientific consensus 2005:Vertical resolution 1809:Subboreal (período) 1804:Atlántico (periodo) 1779:Máximo del Holoceno 1764:Oscilación de Piora 1430:23:50, 19 July 2010 979:– to adapt the work 822:10.1038/nature03265 723:10.1038/nature02903 692:10.1038/nature02599 1644:مناخ هولوسيني أمثل 1460:22:39, 4 July 2009 1452:time axis reversed 869:Global Warming Art 837:Journal of Climate 777:Geophys. Res Lett. 620:(5638): 1361-1364. 374:Temperature record 267:Since there is no 225: 210: 2020: 2019: 2016:07:16, 4 May 2019 1978:more global usage 1894:Événement de Bond 1874:Paléoclimatologie 1739:Paleoklimatologio 1622:Global file usage 1526:Atlantic (period) 1514: 1400:02:02, 7 May 2019 1280:copyright license 1262:copyright license 1161: 1034: 1033: 924: 923: 507:10.1029/94PA03354 449: 448: 379: 378: 112: 99: 98: 79:Wikimedia Commons 32:Global file usage 2024: 1994: 1634:العصر الهولوسيني 1556:Paleoclimatology 1502: 1472: 1442: 1412: 1374: 1232:copyright status 1218:copyright status 1159: 1139:Derivative works 1134: 1121: 1120:(22): 4243-4246. 1030: 1027: 1024: 1021: 1018: 1015: 1012:licensing update 1000:as the original. 949:Creative Commons 944: 943: 939: 938: 933: 932: 926: 920: 917: 914: 911: 908: 886: 885: 879: 843: 819: 813: 801: 789: 783: 771: 759: 753: 741: 720: 714: 701: 689: 683: 682:(6992): 623-628. 670: 658: 652: 639: 627: 621: 608: 596: 590: 589:(5593): 589-593. 576: 564: 558: 548: 536: 530: 516: 504: 498: 492:Paleoceanography 485: 427: 392: 391: 385: 297: 296: 193: 192:Derivative works 190: 183: 180: 173: 170: 163: 160: 153: 150: 143: 140: 133: 130: 123: 120: 113: 95: 74: 73: 67: 61: 59: 2032: 2031: 2027: 2026: 2025: 2023: 2022: 2021: 1982: 1819:Bondi sündmused 1729:Ολόκαινος εποχή 1674:পায়োরা অসিলেশন 1620: 1515: 1508: 1500: 1478: 1470: 1448: 1440: 1418: 1410: 1366: 1365: 1362: 1361: 1360: 1359: 1358: 1357: 1356: 1355: 1353: 1343: 1342: 1341: 1339: 1324: 1323: 1322: 1321: 1320: 1319: 1318: 1317: 1315: 1304: 1303: 1302: 1301: 1300: 1298: 1286: 1285: 1284: 1282: 1259: 1258: 1257: 1256: 1255: 1254: 1253: 1252: 1250: 1238: 1237: 1236: 1234: 1215: 1214: 1213: 1212: 1211: 1210: 1209: 1208: 1206: 1194: 1193: 1192: 1190: 1166: 1165: 1164: 1141: 1124: 1112: 1109: 1083: 1043: 1035: 1028: 1025: 1022: 1019: 1016: 1009: 918: 915: 912: 909: 906: 877: 876: 865: 854:Robert A. 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B.. 552: 546: 541: 520: 514: 509: 489: 483: 475: 454: 445: 417: 404:vector graphics 389: 380: 202: 197: 191: 188: 181: 178: 171: 168: 161: 158: 151: 148: 141: 138: 131: 128: 121: 118: 114: 110: 101: 100: 89: 88: 87:is shown below. 63: 57: 55: 48: 47: 12: 11: 5: 2030: 2018: 2017: 2014: 2010: 2009: 2006: 2002: 2001: 1998: 1985: 1980:of this file. 1974: 1973: 1972: 1971: 1966: 1961: 1953: 1952: 1951: 1946: 1938: 1937: 1936: 1928: 1927: 1926: 1918: 1917: 1916: 1911: 1906: 1901: 1896: 1891: 1886: 1881: 1876: 1871: 1863: 1862: 1861: 1856: 1848: 1847: 1846: 1838: 1837: 1836: 1831: 1823: 1822: 1821: 1813: 1812: 1811: 1806: 1801: 1796: 1791: 1786: 1781: 1776: 1771: 1766: 1761: 1756: 1751: 1743: 1742: 1741: 1733: 1732: 1731: 1723: 1722: 1721: 1716: 1711: 1703: 1702: 1701: 1693: 1692: 1691: 1686: 1678: 1677: 1676: 1668: 1667: 1666: 1658: 1657: 1656: 1648: 1647: 1646: 1641: 1636: 1623: 1619: 1618: 1613: 1608: 1603: 1598: 1593: 1588: 1583: 1578: 1573: 1568: 1563: 1558: 1553: 1548: 1543: 1538: 1533: 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1189: 1185: 1182: 1155: 1148: 1147: 1146: 1132: 1129: 1123: 1119: 1116: 1111: 1110: 1101: 1098: 1095: 1092: 1088: 1085: 1084: 1075: 1074:peer reviewed 1071: 1068: 1064: 1060: 1056: 1053: 1049: 1045: 1044: 1038: 1037: 1013: 1008: 1007: 999: 995: 992: 989: 986: 985: 983: 978: 975: 972: 969: 968: 966: 965: 964: 963: 960: 959: 953: 950: 946: 934: 927: 904: 903: 898: 894: 893: 888: 881: 880: 874: 870: 860: 858: 855: 841: 838: 832: 829: 826: 823: 818: 811: 808: 803: 796: 793: 788: 781: 778: 773: 766: 763: 758: 751: 748: 743: 736: 735: 734: 732: 724: 719: 712: 709: 703: 696: 693: 688: 681: 678: 672: 665: 662: 657: 650: 647: 641: 634: 631: 626: 619: 616: 610: 603: 600: 595: 588: 585: 578: 571: 568: 563: 556: 550: 543: 540: 539:10.1038/20859 535: 528: 525: 518: 511: 508: 503: 497:(3): 661-675. 496: 493: 487: 480: 479: 478: 470: 468: 464: 460: 443: 439: 435: 431: 430: 425: 421: 415: 411: 409: 405: 399: 394: 387: 386: 383: 382: 375: 370: 367: 363: 359: 355: 351: 347: 343: 339: 335: 332: 328: 324: 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Index

File
File history
File usage
Global file usage
Metadata
File:Holocene Temperature Variations.png
Holocene_Temperature_Variations.png
Wikimedia Commons
description page there
You can help
1 Summary
2 Methods
3 Data Sources
4 Copyright
5 Caveats
6 Notes
7 Additional References
8 Derivative works


Antarctica
ice ages
temperature
Holocene
2016
climate
ice age
Holocene climatic optimum
global warming
Image:Short Instrumental Temperature Record.png

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