# Antarctic Peninsula Gomez Ice Core 150 Year d18O Data
#----------------------------------------------------
#                World Data Service for Paleoclimatology, Boulder
#                                  and
#                     NOAA Paleoclimatology Program
#             National Centers for Environmental Information (NCEI)
#----------------------------------------------------
# Template Version 4.0
# Encoding: UTF-8
# NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed.
#
# Description/Documentation lines begin with #
# Data lines have no #
#
# NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/12543
#   Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata.
#
# Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-icecore-12543.json
#   Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata.
#
# Data_Type: Ice Cores
#
# Dataset_DOI: 10.25921/t7b6-gp88
#
# Science_Keywords: 
#--------------------
# Resource_Links
#
# Data_Download_Resource:  https://www.ncei.noaa.gov/pub/data/paleo/icecore/antarctica/gomez/gomez2009d18o-age-noaa.txt
#   Data_Download_Description: NOAA Template File; Gomez Oxygen Isotope Data By Age
#
#--------------------
# Contribution_Date
#   Date: 2012-02-18
#--------------------
# File_Last_Modified_Date
#   Date: 2026-02-18
#--------------------
# Title
#   Study_Name: Antarctic Peninsula Gomez Ice Core 150 Year d18O Data
#--------------------
# Investigators
#   Investigators: Thomas, E.R.(https://orcid.org/0000-0002-3010-6493); Dennis, P.F.(https://orcid.org/0000-0002-0307-4406); Bracegirdle, T.J.(https://orcid.org/0000-0002-8868-4739); Franzke, C.(https://orcid.org/0000-0003-4111-1228)
#--------------------
# Description_Notes_and_Keywords
#   Description: Annual average oxygen isotope (d18O) data from the Gomez ice core, southwestern Antarctic Peninsula, drilled in 2007.  Isotope data measured on a VG SIRA series II analyser with analytical precision of 0.07 per mil. Note: Gomez raw d18O and H2O2 data added 6/18/2012. Gomez, SW Antarctic Peninsula: 73.59°S, 70.36°W, 1400 m a.s.l.
#--------------------
# Publication
#   Authors: Thomas, E.R., P.F. Dennis, T.J. Bracegirdle, and C. Franzke
#   Journal_Name: Geophysical Research Letters
#   Published_Title: Ice core evidence for significant 100-year regional warming on the Antarctic Peninsula
#   Published_Date_or_Year: 2009
#   Volume: 36
#   Issue: 20
#   Pages: 
#   Report_Number: L20704
#   DOI: 10.1029/2009GL040104
#   Full_Citation:
#   Abstract: We present a new 150-year, high-resolution, stable isotope record (d18O) from the Gomez ice core, drilled on the data sparse south western Antarctic Peninsula, revealing a ~2.7°C rise in surface temperatures since the 1950s. The record is highly correlated with satellite-derived temperature reconstructions and instrumental records from Faraday station on the north west coast, thus making it a robust proxy for local and regional temperatures since the 1850s. We conclude that the exceptional 50-year warming, previously only observed in the northern Peninsula, is not just a local phenomena but part of a statistically significant 100-year regional warming trend that began around 1900. A suite of coupled climate models are employed to demonstrate that the 50 and 100 year temperature trends are outside of the expected range of variability from pre-industrial control runs, indicating that the warming is likely the result of external climate forcing.
#--------------------
# Funding_Agency
#   Funding_Agency_Name: UK Natural Environment Research Council (NERC)
#   Grant:
#--------------------
# Funding_Agency
#   Funding_Agency_Name: British Antarctic Survey
#   Grant:
#--------------------
# Site_Information
#   Site_Name: Gomez
#   Location: Antarctica
#   Northernmost_Latitude: -73.59
#   Southernmost_Latitude: -73.59
#   Easternmost_Longitude: -70.36
#   Westernmost_Longitude: -70.36
#   Elevation_m: 1400
#--------------------
# Data_Collection
#   Collection_Name: G2007-d18o-age
#   First_Year: 1857
#   Last_Year: 2005
#   Time_Unit: CE
#   Core_Length_m:
#   Parameter_Keywords: oxygen isotopes
#   Notes: 
#--------------------
# Chronology_Information
# Chronology:
#--------------------
# Variables
# PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf
#   PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format.
#
# Data variables follow that are preceded by '##' in columns one and two.
# Variables list, one per line, shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data)
#
## age_CE	ice age,,,year Common Era,,ice cores,,,N,
## d18O_SMOW	delta 18O,bulk ice,,per mil SMOW,,ice cores,averaged,isotope ratio mass spectrometry,N,annual average
## d18O_err	delta 18O,bulk ice,unspecified margin of error,per mil,,ice cores,,isotope ratio mass spectrometry,N,
#--------------------
# Data:
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing_Values:
age_CE	d18O_SMOW	d18O_err
2005.5	-21.04	-0.407
2004.5	-23.02	-0.438
2003.5	-22.85	-0.436
2002.5	-22.51	-0.430
2001.5	-23.03	-0.438
2000.5	-20.28	-0.394
1999.5	-20.57	-0.399
1998.5	-22.63	-0.432
1997.5	-21.89	-0.420
1996.5	-23.12	-0.440
1995.5	-22.29	-0.427
1994.5	-22.71	-0.433
1993.5	-22.44	-0.429
1992.5	-21.62	-0.416
1991.5	-23.17	-0.441
1990.5	-23.60	-0.448
1989.5	-22.58	-0.431
1988.5	-22.79	-0.435
1987.5	-22.69	-0.433
1986.5	-22.05	-0.423
1985.5	-22.07	-0.423
1984.5	-22.03	-0.423
1983.5	-24.19	-0.457
1982.5	-23.29	-0.443
1981.5	-21.93	-0.421
1980.5	-22.07	-0.423
1979.5	-23.07	-0.439
1978.5	-23.03	-0.439
1977.5	-23.64	-0.448
1976.5	-22.38	-0.428
1975.5	-23.05	-0.439
1974.5	-22.28	-0.427
1973.5	-22.23	-0.426
1972.5	-21.75	-0.418
1971.5	-21.73	-0.418
1970.5	-22.25	-0.426
1969.5	-23.33	-0.443
1968.5	-24.34	-0.459
1967.5	-22.36	-0.428
1966.5	-22.97	-0.438
1965.5	-23.67	-0.449
1964.5	-22.50	-0.430
1963.5	-23.08	-0.439
1962.5	-23.51	-0.446
1961.5	-23.40	-0.444
1960.5	-23.57	-0.447
1959.5	-22.33	-0.427
1958.5	-23.67	-0.449
1957.5	-24.55	-0.463
1956.5	-23.36	-0.444
1955.5	-22.85	-0.436
1954.5	-23.29	-0.443
1953.5	-24.37	-0.460
1952.5	-24.48	-0.462
1951.5	-23.04	-0.439
1950.5	-22.09	-0.423
1949.5	-22.78	-0.434
1948.5	-23.55	-0.447
1947.5	-23.27	-0.442
1946.5	-24.12	-0.456
1945.5	-22.11	-0.424
1944.5	-22.90	-0.436
1943.5	-22.74	-0.434
1942.5	-22.86	-0.436
1941.5	-23.74	-0.450
1940.5	-22.51	-0.430
1939.5	-22.99	-0.438
1938.5	-23.08	-0.439
1937.5	-22.11	-0.424
1936.5	-22.74	-0.434
1935.5	-22.70	-0.433
1934.5	-21.88	-0.420
1933.5	-23.14	-0.440
1932.5	-23.19	-0.441
1931.5	-22.70	-0.433
1930.5	-22.56	-0.431
1929.5	-23.31	-0.443
1928.5	-22.52	-0.430
1927.5	-23.57	-0.447
1926.5	-24.07	-0.455
1925.5	-22.64	-0.432
1924.5	-23.23	-0.442
1923.5	-23.37	-0.444
1922.5	-22.47	-0.430
1921.5	-23.18	-0.441
1920.5	-23.24	-0.442
1919.5	-23.35	-0.444
1918.5	-23.78	-0.450
1917.5	-22.43	-0.429
1916.5	-22.70	-0.433
1915.5	-22.35	-0.428
1914.5	-22.22	-0.426
1913.5	-23.39	-0.444
1912.5	-24.01	-0.454
1911.5	-24.69	-0.465
1910.5	-22.89	-0.436
1909.5	-23.76	-0.450
1908.5	-22.83	-0.435
1907.5	-22.75	-0.434
1906.5	-24.31	-0.459
1905.5	-25.11	-0.472
1904.5	-22.48	-0.430
1903.5	-21.92	-0.421
1902.5	-24.96	-0.469
1901.5	-23.34	-0.443
1900.5	-23.46	-0.445
1899.5	-24.24	-0.458
1898.5	-22.79	-0.435
1897.5	-23.67	-0.449
1896.5	-24.51	-0.462
1895.5	-22.62	-0.432
1894.5	-22.68	-0.433
1893.5	-23.04	-0.439
1892.5	-23.15	-0.440
1891.5	-23.39	-0.444
1890.5	-23.43	-0.445
1889.5	-21.97	-0.422
1888.5	-23.33	-0.443
1887.5	-21.69	-0.417
1886.5	-21.44	-0.413
1885.5	-23.31	-0.443
1884.5	-24.11	-0.456
1883.5	-22.92	-0.437
1882.5	-22.72	-0.434
1881.5	-24.19	-0.457
1880.5	-24.11	-0.456
1879.5	-22.39	-0.428
1878.5	-22.42	-0.429
1877.5	-23.39	-0.444
1876.5	-22.13	-0.424
1875.5	-23.02	-0.438
1874.5	-22.27	-0.426
1873.5	-23.20	-0.441
1872.5	-22.78	-0.434
1871.5	-22.62	-0.432
1870.5	-23.59	-0.447
1869.5	-23.33	-0.443
1868.5	-23.62	-0.448
1867.5	-24.65	-0.464
1866.5	-23.86	-0.452
1865.5	-22.70	-0.433
1864.5	-23.22	-0.442
1863.5	-23.93	-0.453
1862.5	-24.21	-0.457
1861.5	-23.50	-0.446
1860.5	-22.42	-0.429
1859.5	-22.91	-0.436
1858.5	-23.82	-0.451
1857.5	-23.44	-0.445