noaa-icecore-2466 Kilimanjaro - Oxygen Isotope, Ion, and Dust Data and Description Thompson, L.G.; Mosley-Thompson, E.; Davis, M.D.; Henderson, K.A.; Brecher, H.H.; Zagorodnov, V.S.; Mashiotta, T.A.; Lin, P-N.; Mikhalenko, V.N.; Hardy, D.R.; Beer, J. Kilimanjaro - Oxygen Isotope, Ion, and Dust Data and Description 2002-10-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/2466 Investigator L.G. Thompson Investigator E. Mosley-Thompson Investigator M.D. Davis Investigator K.A. Henderson Investigator H.H. Brecher Investigator V.S. Zagorodnov Investigator T.A. Mashiotta Investigator P-N. Lin Investigator V.N. Mikhalenko Investigator D.R. Hardy Investigator J. Beer earth science paleoclimate ice cores depth at sample start,null,null,meter,null,ice cores,null,null,N,null earth science paleoclimate ice cores delta 18O,bulk ice,null,per mil VSMOW,null,ice cores,null,null,N,null earth science paleoclimate ice cores 36Cl,bulk ice,unspecified margin of error,percent,null,ice cores,null,null,N,null earth science paleoclimate ice cores 36Cl,bulk ice,null,count per gram,null,ice cores,null,null,N,atom per gram earth science paleoclimate ice cores calcium,bulk ice,null,parts per billion,null,ice cores,averaged,null,N,null earth science paleoclimate ice cores sulfate,bulk ice,null,parts per billion,null,ice cores,averaged,null,N,null earth science paleoclimate ice cores ice age at sample start,null,null,calendar kiloyear before present,null,ice cores,null,null,N,null earth science paleoclimate ice cores delta 18O,bulk ice,null,per mil VSMOW,null,ice cores,averaged,null,N,null earth science paleoclimate ice cores sodium,bulk ice,null,parts per billion,null,ice cores,averaged,null,N,null earth science paleoclimate ice cores dust,bulk ice,null,count per milliliter,null,ice cores,averaged,null,N,x1e5 units; > 0.63 micrometers earth science paleoclimate ice cores nitrate,bulk ice,null,parts per billion,null,ice cores,null,null,N,null earth science paleoclimate ice cores fluoride,bulk ice,null,parts per billion,null,ice cores,averaged,null,N,null earth science paleoclimate ice cores ammonium,bulk ice,null,parts per billion,null,ice cores,averaged,null,N,null earth science paleoclimate ice cores magnesium,bulk ice,null,parts per billion,null,ice cores,averaged,null,N,null earth science paleoclimate ice cores nitrate,bulk ice,null,parts per billion,null,ice cores,averaged,null,N,null earth science paleoclimate ice cores potassium,bulk ice,null,parts per billion,null,ice cores,averaged,null,N,null earth science paleoclimate ice cores chloride,bulk ice,null,parts per billion,null,ice cores,averaged,null,N,null earth science paleoclimate ice core physical properties earth science paleoclimate ice core oxygen isotopes earth science paleoclimate ice core chemistry geoscientificInformation PAGES 2k Network PAGES Africa 2k -9650 AD 2000 AD 11600 cal yr BP -50 cal yr BP Complete -3.08 -3.08 37.35 37.35 5893 5893 Continent Africa Eastern Africa Tanzania Kilimanjaro>LATITUDE -3.08>LONGITUDE 37.35 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII 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, 2002, Kilimanjaro Ice Core Records: Evidence of Holocene Climate Change in Tropical Africa, Science, Volume 298, 5593, 18 October 2002.

Six ice cores from Kilimanjaro provide an ~11.7-thousand-year record of Holocene climate and environmental variability for eastern equatorial Africa, including three periods of abrupt climate change: ~8.3, ~5.2, and ~4 thousand years ago (ka). The latter is coincident with the "First Dark Age," the period of the greatest historically recorded drought in tropical Africa. Variable deposition of F- and Na+ during the African Humid Period suggests rapidly fluctuating lake levels between ~11.7 and 4 ka. Over the 20th century, the areal extent of Kilimanjaro's ice fields has decreased ~80%, and if current climatological conditions persist, the remaining ice fields are likely to disappear between 2015 and 2020.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/trop/kilimanjaro/kilimanjaro.txt USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11