noaa-icecore-23230 Ritscherflya Dronning Maud Land, Antarctica oxygen isotope and accumulation rate data for 1932-1991 CE Isaksson, E.; Karlén, W.; Gundestrup, N.; Mayewski, P.A.; Whitlow, S.I.; Twickler, M.S. Ritscherflya Dronning Maud Land, Antarctica oxygen isotope and accumulation rate data for 1932-1991 CE 2017-11-17 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/23230 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 accumulation rate,snow,null,kilogram per square meter per year,null,ice cores,null,null,N,calculated earth science paleoclimate ice cores delta 18O,bulk ice,null,per mil SMOW,null,ice cores,null,isotope ratio mass spectrometry,N,mean annual values earth science paleoclimate ice cores ice age,null,null,year Common Era,null,ice cores,null,null,N,annual counting by dO18 and electrical conductivity earth science paleoclimate ice core accumulation earth science paleoclimate ice core oxygen isotopes geoscientificInformation 1932 AD 1991 AD 18 cal yr BP -41 cal yr BP Complete -73.6 -73.6 -12.4333 -12.4333 700 700 Continent Antarctica Ritscherflya Core E Dronning Maud Land>LATITUDE -73.6>LONGITUDE -12.4333 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. STUDY NOTES: DML data contributed to the PAGES 2k project. Provided Keywords: oxygen isotope of water, temperature proxy, accumulation rate

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/stenni2017antarctica/DMLicecore/Site7_16-PAGESAnt2k-DML_Ritscherflya_E91.txt NOAA Template File; Core E d18O Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/stenni2017antarctica/DMLicecore/Site7_16-accum-DML_Ritscherflya_E91.txt NOAA Template File; Core E Snow Accumulation Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11