noaa-icecore-2424 Dronning Maud Land - Chemistry Data Isaksson, E.; Karlén, W.; Gundestrup, N.; Mayewski, P.A.; Whitlow, S.I.; Twickler, M.S. Dronning Maud Land - Chemistry Data 1996-01-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/2424 Investigator E. Isaksson Investigator W. Karlén Investigator N. Gundestrup Investigator P.A. Mayewski Investigator S.I. Whitlow Investigator M.S. Twickler earth science paleoclimate ice cores calcium,bulk ice,null,parts per billion,null,ice cores,null,null,N,null earth science paleoclimate ice cores sulfate,bulk ice,null,parts per billion,null,ice cores,null,null,N,null earth science paleoclimate ice cores sodium,bulk ice,null,parts per billion,null,ice cores,null,null,N,null earth science paleoclimate ice cores magnesium,bulk ice,null,parts per billion,null,ice cores,null,null,N,null earth science paleoclimate ice cores chloride,bulk ice,null,parts per billion,null,ice cores,null,null,N,null earth science paleoclimate ice cores nitrate,bulk ice,null,parts per billion,null,ice cores,null,null,N,null earth science paleoclimate ice cores methanesulfonic acid,bulk ice,null,parts per billion,null,ice cores,null,null,N,null earth science paleoclimate ice cores depth at sample end,null,null,null,null,ice cores,null,null,N,null earth science paleoclimate ice cores depth at sample start,null,null,null,null,ice cores,null,null,N,null earth science paleoclimate ice core chemistry geoscientificInformation 1900 AD 2000 AD 50 cal yr BP -50 cal yr BP Complete -75 -75 65.02 65.02 2900 2900 Continent Antarctica Dronning Maud Land>LATITUDE -75>LONGITUDE 65.02 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 Isaksson, E., W. Karlen, N. Gundestrup, P. Mayewski, S. Whitlow, and M. Twickler 1996 Journal of Geophysical Research: Atmospheres 101 D3 7085-7094 10.1029/95JD03232

A mass balance program was initiated in the Vestfjella-Heimefrontfjella area of western Dronning Maud Land during the austral summer of 1988–1989. As a part of this program, spatial and temporal variations in snow accumulation and temperature/stable isotopes are measured using shallow firn cores. In this paper we present surface accumulation data and discuss the climatic implications of the stable isotope records from two shallow firn cores. One 30-m-deep core, obtained about 200 km from the coast at 700 m asl (73°36'S, 12°26'W), covers the period 1932–1991. The other core was drilled at about 500 km from the coast at 2900 m asl (75°00'S, 2°00'E) and covers the period 1865–1991. The recent accumulation increase that has been reported from several areas of the Antarctic continent is not present in either of these records. Instead, our coastal record suggests a significant decrease in accumulation, with the strongest trend from about 1975. There is a positive trend in the oxygen isotope signal in both cores, which in the coastal core corresponds to a temperature increase of about 1.8°C since the early 1930s, and in the high-altitude core to about 0.8°C since 1865. However, it is likely that part of this increase in d18O is due to a change of moisture source.

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