# Penny Ice Core 1995 #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original reference when using these data, # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed # # # # Online_Resource: https://www.ncdc.noaa.gov/cdo/f?p=519:1:::::P1_STUDY_ID:2474 # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/24611 # # Original_Source_URL: http://www1.ncdc.noaa.gov/pub/data/paleo/icecore/polar/penny/penny95/d18o/del25ysg_954.txt # Description/Documentation lines begin with # # Data lines have no # # # Archive: Ice Cores # -------------------- # Contribution_date # Date: 2015 # -------------------- # Title # Study_Name: Penny Ice Core 1995 # -------------------- # Investigators # Investigators: Fisher, D.A.; Koerner, R.M.; Bourgeois, J.C.; Zielinski, G.; Waker, C; Hammer, C.U.; Clausen, H.B.; Gundenstrup, N.; Johnsen, S.; Goto-Zauma, K.; Hondoh, T.; Blake, E.; Gerasimoff, M. # -------------------- # Description_and_Notes # Description: # # -------------------- # Publication # Authors: D.A. Fisher, R.M. Koerner, J.C. Bourgeois, G. Zielinski, C. Wake, C.U. Hammer, H.B. Clausen, N. Gundestrup, S. Johnsen, K. Goto-Azuma, T. Hondoh, E. Blake, and M. Gerasimoff # Published_Date_or_Year: 1998 # Published_Title: Penny ice cap cores, Baffin Island, Canada, and the Wisconsinan Foxe Dome connection: Two states of Hudson Bay ice cover # Journal_Name: Science # Volume: 279 # Edition: # Issue: # Pages: 692-695 # DOI: # Online_Resource: # Full_Citation: # Abstract: Ice cores from Penny Ice Cap, Baffin Island, Canada, provide continuous Holocene records of oxygen isotopic composition (delta18O, proxy for temperature) and atmospheric impurities. A time scale was established with the use of altered seasonal variations, some volcanic horizons, and the age for the end of the Wisconsin ice age determined from the GRIP and GISP2 ice cores. There is pre-Holocene ice near the bed. The change in delta18O since the last glacial maximum (LGM) is at least 12.5 per mil, compared with an expected value of 7 per mil, suggesting that LGM ice originated at the much higher elevations of the then existing Foxe Dome and Foxe Ridge of the Laurentide Ice Sheet. The LGM delta18O values suggest thick ice frozen to the bed of Hudson Bay. # -------------------- # Authors: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G.J., Noone, D., Perkins, W.A., and E. Steig # Published_Date_or_Year: 2018 # Published_Title: Additions to the last millennium reanalysis multi-proxy database # Journal_Name: Data Science Journal # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: # Online_Resource: # Full_Citation: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G., J., Noone, D., Perkins, W.A., and E. Steig, submitted. Additions to the last millennium reanalysis multi-proxy database. Data Science Journal. # Abstract: Progress in paleoclimatology increasingly occurs via data syntheses. We describe additions to a collection prepared for use in paleoclimate state estimation, specifically the Last Millennium Reanalysis (LMR). The 2290 additional series include 2152 tree ring chronologies and 138 other series. They supplement the collection used previously and together form a database titled LMRdb 1.0.0. The additional data draws from lake core, ice core, coral, speleothem, and tree ring archives, using published data primarily from the NOAA Paleoclimatology archive and a set of tree ring width chronologies standardized from raw International Tree Ring Data Bank ring width series. In contrast to many previous paleo compilations, the data were not selected (screened) on the basis of their environmental correlation, multi-century length, or other attributes. The inclusion of proxies sensitive to moisture and other environmental variables expands their use in data assimilation. A preliminary calibration using linear regression with mean annual temperature reveals characteristics of the proxy series and their relationship to temperature, as well as the noise and error characteristics of the records. The additional records are structured as individual files in the NOAA Paleoclimatology format and archived at NOAA Paleoclimatology (Anderson et al. 2018) and will continue to be improved and expanded as part of the LMR Project. The additions represent a four-fold increase in the number of records available for assimilation, provide expanded geographic coverage, and add additional proxy variables. Applications include data assimilation, proxy system model development, and paleoclimate reconstruction using climate field reconstruction and other methods. #------------------ # Funding_Agency # Funding_Agency_Name: # Grant_Number: # -------------------- # Funding_Agency_Name: National Science Foundation # Grant:AGS-1304263 # Funding_Agency_Name: National Oceanic and Atmospheric Administration # Grant:NA14OAR4310176 #------------------ # Site_Information # Site_Name: Penny Ice Cap, Baffin Island # Location: North America>Canada # Country: Canada # Northernmost_Latitude: 67.25 # Southernmost_Latitude: 67.25 # Easternmost_Longitude: -66.75 # Westernmost_Longitude: -66.75 # Elevation: 2100 m # -------------------- # Data_Collection # Collection_Name: 95Penn02 # Earliest_Year: -9783 # Most_Recent_Year: 1992 # Time_Unit: y_ad # # -------------------- # Variables # # Data variables follow that are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ##age age,,,years AD,,,,,N ##d18O delta 18 oxygen,,,permil SMOW,,Ice Cores,,,N # # -------------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing values: NAN # age d18O 1992 -24.2424 1967 -24.2954 1942 -23.8947 1917 -23.686 1892 -24.2922 1867 -24.3414 1842 -24.5694 1817 -24.3462 1792 -24.4846 1767 -24.3235 1742 -24.699 1717 -24.7863 1692 -24.4104 1667 -24.4806 1642 -23.5986 1617 -23.9462 1592 -23.8977 1567 -24.902 1542 -24.733 1517 -24.3774 1492 -24.1072 1467 -24.5308 1442 -24.0599 1417 -23.9306 1392 -24.2874 1367 -23.6743 1342 -24.2147 1317 -23.9456 1292 -24.5008 1267 -24.6458 1242 -24.0002 1217 -24.2987 1192 -23.6473 1167 -24.6711 1142 -24.0811 1117 -24.3934 1092 -24.0712 1067 -24.1054 1042 -24.2004 1017 -24.3009 992 -24.7188 967 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