Table of Contents
Dataset Papers in Geosciences
Volume 2013 (2013), Article ID 548048, 9 pages
http://dx.doi.org/10.7167/2013/548048
Dataset Paper

Global Speleothem Oxygen Isotope Measurements Since the Last Glacial Maximum

1Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO 80309-0216, USA
2NOAA Paleoclimatology Program, National Climatic Data Center, National Oceanic and Atmospheric Administration, 325 Broadway, Code E/CC23, Boulder, CO 80305-3328, USA

Received 25 July 2012; Accepted 19 September 2012

Academic Editors: Q. Cao, A. Foerster, P. Keckhut, J. L. Prado, B. Wuennemann, and D.-P. Yan

This dataset has been dedicated to the public domain using the CC0 waiver.

Dataset http://dx.doi.org/10.7167/2013/548048/dataset

Dataset

Dataset Item 1 (Table). Metadata information for each of the sixty cores (i.e., site name, core name, latitude, longitude, principal investigator, and journal citation). Also provided in these metadata are Universal Resource Locators (URLs) for machine-readable ASCII files for each core, which give more complete information about site-specific metadata, dating methods, and all raw data (Figure 2).

  • Column 1: Core Index
  • Column 2: Site Name
  • Column 3: Core Name
  • Column 4: Latitude
  • Column 5: Longitude
  • Column 6: Principle Investigator
  • Column 7: Citation
  • Column 8: Date Accessed
  • Column 9: File URL

Dataset Item 2 (Table). A compilation of speleothem oxygen isotope records including quality-controlled values from 60 cores at 36 sites (Figure 1; Table 1), for a total of 27 981 values. The R code to read this csv file is as follows: speleo <-read.csv(“548048.item.2.csv”,header=TRUE). The spatial distribution of these sites is constrained by the environmental conditions necessary for cave formation (e.g., soluble bedrock and climate conducive to dissolution and deposition processes) as well as by cave exploration and documentation. These time series span part or all of the last deglaciation and Holocene and are provided on a common age scale (calendar years before present, where present equals 1950 A.D.) and with common measurement units (per mil PDB). Data for all sixty cores are presented in three columns. The first column is Core Index, which identifies the core according to the metadata table (Dataset Item 1); the second column is Age in calendar years BP; the third column is Delta-O-18 of Calcium Carbonate in per mil PDB.

  • Column 1: Core Index
  • Column 2: Age (cal yr BP)
  • Column 3: Delta-O-18 of Calcium Carbonate (‰)

Dataset Item 3 (Table). An average of samples aggregated over 1-year intervals (annual) from the original raw data located at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/syntrace/speleothem/speleothem-d18o-0-22k.csv (Dataset Item 1 (Table)). The first column is Age that presents the date of 1-year interval in calendar years before present (cal yr BP). Columns 2–61 present the average of aggregated of calcium carbonate (per mil PDB) for each core (60 cores). Missing values are identified by “NaN.”

  • Column 1: Age (cal yr BP)
  • Column 2: Core 1
  • Column 3: Core 2
  •     ⋮
  • Column 59: Core 58
  • Column 60: Core 59
  • Column 61: Core 60

Dataset Item 4 (Table). A count of samples aggregated over 1-year intervals (annual) from the original raw data located at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/syntrace/speleothem/speleothem-d18o-0-22k.csv (Dataset Item 1 (Table)). The first column is Age that presents the date of 1-year interval in calendar years before present (cal yr BP). Columns 2–61 present the count of aggregated of calcium carbonate (per mil PDB) for each core (60 cores). Missing values are identified by “NaN.”

  • Column 1: Age (cal yr BP)
  • Column 2: Core 1
  • Column 3: Core 2
  •     ⋮
  • Column 59: Core 58
  • Column 60: Core 59
  • Column 61: Core 60

Dataset Item 5 (Table). Standard deviation of samples aggregated over 1-year intervals (annual) from the original raw data located at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/syntrace/speleothem/speleothem-d18o-0-22k.csv (Dataset Item 1 (Table)). The first column is Age that presents the date of 1-year interval in calendar years before present (cal yr BP). Columns 2–61 present the standard deviation of aggregated of calcium carbonate (per mil PDB) for each core (60 cores). Missing values are identified by “NaN.”

  • Column 1: Age (cal yr BP)
  • Column 2: Core 1
  • Column 3: Core 2
  •     ⋮
  • Column 59: Core 58
  • Column 60: Core 59
  • Column 61: Core 60

Dataset Item 6 (Table). An average of samples aggregated over 10-year intervals (decadal) from the original raw data located at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/syntrace/speleothem/speleothem-d18o-0-22k.csv (Dataset Item 1 (Table)). The first column is Age that presents the midpoint age of 10-year interval in calendar years before present (cal yr BP). Columns 2–61 present the average of aggregated of calcium carbonate (per mil PDB) for each core (60 cores). Missing values are identified by “NaN.”

  • Column 1: Age (cal yr BP)
  • Column 2: Core 1
  • Column 3: Core 2
  •     ⋮
  • Column 59: Core 58
  • Column 60: Core 59
  • Column 61: Core 60

Dataset Item 7 (Table). A count of samples aggregated over 10-year intervals (decadal) from the original raw data located at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/syntrace/speleothem/speleothem-d18o-0-22k.csv (Dataset Item 1 (Table)). The first column is Age that presents the midpoint age of 10-year interval in calendar years before present (cal yr BP). Columns 2–61 present the count of aggregated of calcium carbonate (per mil PDB) for each core (60 cores). Missing values are identified by “NaN.”

  • Column 1: Age (cal yr BP)
  • Column 2: Core 1
  • Column 3: Core 2
  •     ⋮
  • Column 59: Core 58
  • Column 60: Core 59
  • Column 61: Core 60

Dataset Item 8 (Table). Standard deviation of samples aggregated over 10-year intervals (decadal) from the original raw data located at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/syntrace/speleothem/speleothem-d18o-0-22k.csv (Dataset Item 1 (Table)). The first column is Age that presents the midpoint age of 10-year interval in calendar years before present (cal yr BP). Columns 2–61 present the standard deviation of aggregated of calcium carbonate (per mil PDB) for each core (60 cores). Missing values are identified by “NaN.”

  • Column 1: Age (cal yr BP)
  • Column 2: Core 1
  • Column 3: Core 2
  •     ⋮
  • Column 59: Core 58
  • Column 60: Core 59
  • Column 61: Core 60

Dataset Item 9 (Table). An average of samples aggregated over 100-year intervals (centennial) from the original raw data located at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/syntrace/speleothem/speleothem-d18o-0-22k.csv (Dataset Item 1 (Table)). The first column is Age that presents the midpoint age of 100-year interval in calendar years before present (cal yr BP). Columns 2–61 present the average of aggregated of calcium carbonate (per mil PDB) for each core (60 cores). Missing values are identified by “NaN.”

  • Column 1: Age (cal yr BP)
  • Column 2: Core 1
  • Column 3: Core 2
  •     ⋮
  • Column 59: Core 58
  • Column 60: Core 59
  • Column 61: Core 60

Dataset Item 10 (Table). A count of samples aggregated over 100-year intervals (centennial) from the original raw data located at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/syntrace/speleothem/speleothem-d18o-0-22k.csv (Dataset Item 1 (Table)). The first column is Age that presents the midpoint age of 100-year interval in calendar years before present (cal yr BP). Columns 2–61 present the count of aggregated of calcium carbonate (per mil PDB) for each core (60 cores). Missing values are identified by “NaN.”

  • Column 1: Age (cal yr BP)
  • Column 2: Core 1
  • Column 3: Core 2
  •     ⋮
  • Column 59: Core 58
  • Column 60: Core 59
  • Column 61: Core 60

Dataset Item 11 (Table). Standard deviation of samples aggregated over 100-year intervals (centennial) from the original raw data located at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/syntrace/speleothem/speleothem-d18o-0-22k.csv (Dataset Item 1 (Table)). The first column is Age that presents the midpoint age of 100-year interval in calendar years before present (cal yr BP). Columns 2–61 present the standard deviation of aggregated of calcium carbonate (per mil PDB) for each core (60 cores). Missing values are identified by “NaN.”

  • Column 1: Age (cal yr BP)
  • Column 2: Core 1
  • Column 3: Core 2
  •     ⋮
  • Column 59: Core 58
  • Column 60: Core 59
  • Column 61: Core 60

Dataset Item 12 (Table). An average of samples aggregated over 1000-year intervals (millennial) from the original raw data located at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/syntrace/speleothem/speleothem-d18o-0-22k.csv (Dataset Item 1 (Table)). The first column is Age that presents the midpoint age of 1000-year interval in calendar years before present (cal yr BP). Columns 2–61 present the average of aggregated of calcium carbonate (per mil PDB) for each core (60 cores). Missing values are identified by “NaN.”

  • Column 1: Age (cal yr BP)
  • Column 2: Core 1
  • Column 3: Core 2
  •     ⋮
  • Column 59: Core 58
  • Column 60: Core 59
  • Column 61: Core 60

Dataset Item 13 (Table). A count of samples aggregated over 1000-year intervals (millennial) from the original raw data located at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/syntrace/speleothem/speleothem-d18o-0-22k.csv (Dataset Item 1 (Table)). The first column is Age that presents the midpoint age of 1000-year interval in calendar years before present (cal yr BP). Columns 2–61 present the count of aggregated of calcium carbonate (per mil PDB) for each core (60 cores). Missing values are identified by “NaN.”

  • Column 1: Age (cal yr BP)
  • Column 2: Core 1
  • Column 3: Core 2
  •     ⋮
  • Column 59: Core 58
  • Column 60: Core 59
  • Column 61: Core 60

Dataset Item 14 (Table). Standard deviation of samples aggregated over 1000-year intervals (millennial) from the original raw data located at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/syntrace/speleothem/speleothem-d18o-0-22k.csv (Dataset Item 1 (Table)). The first column is Age that presents the midpoint age of 1000-year interval in calendar years before present (cal yr BP). Columns 2–61 present the standard deviation of aggregated of calcium carbonate (per mil PDB) for each core (60 cores). Missing values are identified by “NaN.”

  • Column 1: Age (cal yr BP)
  • Column 2: Core 1
  • Column 3: Core 2
  •     ⋮
  • Column 59: Core 58
  • Column 60: Core 59
  • Column 61: Core 60