Back حدث سنة 8200 قبل الحاضر Arabic Глабальнае пахаладанне 6200 года да н.э. Byelorussian Misox-Schwankung German Evento del kiloaño 8-2 Spanish رویداد ۸۲۰۰ ساله Persian Äkillinen kylmeneminen 8 200 vuotta sitten Finnish Événement climatique de 8200 AP French אירוע ה-8200 HE Peristiwa 8,2 kilo-warsa ID Evento climatico 8,2 ka BP Italian

8.2-kiloyear event

The 8.2 kiloyear event appears as a dent in the warm Holocene period. Evolution of temperatures in the Post-Glacial period following the Last Glacial Maximum (LGM), according to Greenland ice cores.[1]
The warm Holocene period with the 8.2 kiloyear event. Central Greenland ice core reconstructed temperature up to mid-19th century.

In climatology, the 8.2-kiloyear event was a sudden decrease in global temperatures that occurred approximately 8,200 years before the present, or c. 6,200 BC, and which lasted for the next two to four centuries. It defines the start of the Northgrippian age in the Holocene epoch. The cooling was significantly less pronounced than during the Younger Dryas cold period that preceded the beginning of the Holocene. During the event, atmospheric methane concentration decreased by 80 ppb, an emission reduction of 15%, by cooling and drying at a hemispheric scale.[2][3]

  1. ^ Zalloua, Pierre A.; Matisoo-Smith, Elizabeth (6 January 2017). "Mapping Post-Glacial expansions: The Peopling of Southwest Asia". Scientific Reports. 7: 40338. Bibcode:2017NatSR...740338P. doi:10.1038/srep40338. ISSN 2045-2322. PMC 5216412. PMID 28059138.
  2. ^ Kobashi, T.; et al. (2007). "Precise timing and characterization of abrupt climate change 8,200 years ago from air trapped in polar ice". Quaternary Science Reviews. 26 (9–10): 1212–1222. Bibcode:2007QSRv...26.1212K. CiteSeerX 10.1.1.462.9271. doi:10.1016/j.quascirev.2007.01.009.
  3. ^ LeGrande, Allegra N. (2009), "The 8,200-Year BP Event", in Gornitz, Vivien (ed.), Encyclopedia of Paleoclimatology and Ancient Environments, Encyclopedia of Earth Sciences Series, Dordrecht: Springer Netherlands, pp. 938–943, doi:10.1007/978-1-4020-4411-3_219, ISBN 978-1-4020-4411-3, retrieved 2024-03-03

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