# Dongsha Atoll, South China Sea, Coral d18O and Sr/Ca Data from 1952 to 2016
#-----------------------------------------------------------------------
#               World Data Service for Paleoclimatology, Boulder
#                                   and
#                      NOAA Paleoclimatology Program
#-----------------------------------------------------------------------
# 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 '#' followed by a space
# Data lines have no '#'
#
# NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/38839
#   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-coral-38839.json
#   Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata.
#
# Data_Type: Corals and Sclerosponges
#
# Dataset_DOI: 10.25921/r3p7-yj24
#
# Science_Keywords: 
#---------------------------------------
# Resource_Links
#
# Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/coral/south_china_sea/lin2024/lin2024-bimonthly_d18o_srca.txt
#   Data_Download_Description: NOAA Template File; Bimonthly d18O and Sr/Ca Data
#
#---------------------------------------
# Contribution_Date
#   Date: 2023-12-27
#---------------------------------------
# File_Last_Modified_Date
#   Date: 2024-12-30
#---------------------------------------
# Title
#   Study_Name: Dongsha Atoll, South China Sea, Coral d18O and Sr/Ca Data from 1952 to 2016
#---------------------------------------
# Investigators
#   Investigators: Lin, Ke (https://orcid.org/0003-3675-9054); Han, Tao; Zhang, Yilin (https://orcid.org/0000-0003-4022-807X); Shen, Chuan-Chou (https://orcid.org/0000-0003-2833-2771); Lee, Shih-Yu; Wang, Jingyu (https://orcid.org/0000-0002-4841-0872); Mohtar, Ahmad (https://orcid.org/0000-0002-8523-9373); Huang, Kuo-Fang (https://orcid.org/0000-0002-7858-4865); Chiang, Hong-Wei (https://orcid.org/0000-0002-5274-594X); Chen, Yue-Gau (https://orcid.org/0000-0002-8693-583X); Wang, Xianfeng (https://orcid.org/0000-0002-8614-5627)
#---------------------------------------
# Description_Notes_and_Keywords
#   Description: 
#---------------------------------------
# Publication
#   Authors: Ke Lin, Tao Han, Yilin Zhang, Chuan-Chou Shen, Shih-Yu Lee, Jingyu Wang, Ahmad T. Mohtar, Kuo-Fang Huang, Hong-Wei Chiang, Yue-Gau Chen1, Xianfeng Wang
#   Published_Date_or_Year: 2024
#   Published_Title: Influences of East Asian winter monsoon and El Niño-Southern Oscillation variability on the Kuroshio intrusion to the South China Sea over the past 60 years
#   Journal_Name: Geophysical Research Letters
#   Volume: 51
#   Edition: 
#   Issue: 2 
#   Pages: 
#   Report_Number: e2023GL104155
#   DOI: 10.1029/2023GL104155 
#   Online_Resource: 
#   Full_Citation: 
#   Abstract: The Kuroshio intrusion (KI) is a northwestward-flowing branch of the Kuroshio Current, which enters the South China Sea (SCS) and regulates its temperature, salinity, and water mass exchanges. However, limited direct observations hinder our understanding of KI’s mechanisms and responses to climate change. Here, we present a 60-year bi-monthly resolved coral oxygen isotope (d18Oc) record from Dongsha Atoll, the northern SCS. The dry-season (December-March) d18Oc record reveals interannual to decadal variabilities of the KI. The impact of the East Asian winter monsoon (EAWM) on Dongsha d18Oc was more pronounced during the 1970s and 1980s and after the early 2000s, while the influence of the El Niño-Southern Oscillation (ENSO) on Dongsha d18Oc was higher between the 1980s and 1990s. The Pacific Decadal Oscillation (PDO) may have a relatively minor effect on KI strength or may indirectly modulate KI strength through its influence on ENSO activities. Our Dongsha d18Oc record highlight the importance of the EAWM, ENSO, and PDO in predicting future KI changes.
#---------------------------------------
# Funding_Agency
#   Funding_Agency_Name: 
#   Grant: 
#---------------------------------------
# Site_Information
#   Site_Name: Dongsha Atoll Coral
#   Location: South China Sea
#   Northernmost_Latitude: 20.62
#   Southernmost_Latitude: 20.62
#   Easternmost_Longitude: 116.7
#   Westernmost_Longitude: 116.7
#   Elevation_m: 
#---------------------------------------
# Data_Collection
#   Collection_Name: bimonthly_d18O_SrCa
#   First_Year: 1952
#   Last_Year: 2016
#   Time_Unit: year Common Era
#   Core_Length_m: 
#   Parameter_Keywords: trace metals, 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)
#
## Date	age,,,Year Common Era,,corals and sclerosponges,,,N,
## Sr/Ca	strontium/calcium,Porites sp.,,millimole per mole,,corals and sclerosponges,,,N,
## d18O	delta 18O,Porites sp.,,per mil,,corals and sclerosponges,,,N,
#------------------------
# Data:
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing_Values: NA
Date	Sr/Ca	d18O
2016.49	8.794	-5.286
2016.33	8.990	-4.632
2016.16	9.092	-4.322
2016.00	8.950	-4.970
2015.83	8.893	-5.231
2015.66	8.824	-5.043
2015.49	8.793	-5.073
2015.33	8.930	-4.693
2015.16	9.089	-4.257
2015.00	9.179	-3.766
2014.83	8.919	-4.531
2014.66	8.849	-5.009
2014.49	8.815	-4.540
2014.33	9.051	-4.309
2014.16	9.187	-3.967
2014.00	9.072	-4.440
2013.83	8.876	-5.221
2013.66	8.847	-5.396
2013.49	8.800	-4.929
2013.33	9.022	-4.467
2013.16	9.076	-4.500
2013.00	9.002	-4.944
2012.83	8.936	-5.135
2012.66	8.847	-5.401
2012.49	8.840	-5.158
2012.33	8.926	-4.837
2012.16	9.058	-4.581
2012.00	9.127	-4.390
2011.83	8.968	-4.488
2011.66	8.801	-5.281
2011.49	8.863	-4.938
2011.33	9.020	-4.452
2011.16	9.180	-3.916
2011.00	9.020	-4.565
2010.83	8.938	-4.834
2010.66	8.863	-4.932
2010.49	8.942	-4.395
2010.33	9.068	-4.369
2010.16	9.104	-3.955
2010.00	9.095	-4.595
2009.83	8.939	-4.595
2009.66	8.801	-5.407
2009.49	8.914	-4.444
2009.33	9.073	-4.518
2009.16	9.103	-4.429
2009.00	9.092	-4.339
2008.83	8.905	-5.225
2008.66	8.837	-5.097
2008.49	8.888	-4.856
2008.33	8.922	-4.314
2008.16	9.198	-3.873
2008.00	9.068	-4.199
2007.83	8.960	-4.665
2007.66	8.865	-4.919
2007.49	8.850	-4.608
2007.33	9.003	-4.322
2007.16	9.091	-4.320
2007.00	9.049	-4.580
2006.83	8.929	-4.864
2006.66	8.798	-5.171
2006.49	8.847	-5.182
2006.33	8.964	-4.544
2006.16	9.093	-4.057
2006.00	9.143	-4.519
2005.83	8.922	-4.814
2005.66	8.842	-4.591
2005.49	8.886	-4.520
2005.33	8.974	-4.449
2005.16	9.122	-4.054
2005.00	9.204	-3.658
2004.83	9.020	-4.265
2004.66	8.879	-4.688
2004.49	8.884	-4.610
2004.33	9.005	-4.395
2004.16	9.114	-3.831
2004.00	9.088	-3.969
2003.83	8.983	-4.106
2003.66	8.872	-4.406
2003.49	8.804	-4.706
2003.33	8.899	-4.753
2003.16	9.125	-3.911
2003.00	9.099	-3.983
2002.83	9.005	-4.054
2002.66	8.873	-4.204
2002.49	8.770	-4.354
2002.33	8.862	-4.898
2002.16	9.106	-4.543
2002.00	9.081	-3.887
2001.83	8.873	-4.707
2001.66	8.786	-4.911
2001.49	8.881	-4.601
2001.33	9.012	-4.211
2001.16	9.106	-3.896
2001.00	9.057	-4.378
2000.83	8.953	-4.859
2000.66	8.880	-5.014
2000.49	8.838	-5.169
2000.33	8.955	-4.741
2000.16	9.123	-4.003
2000.00	9.036	-4.331
1999.83	8.901	-4.658
1999.66	8.773	-4.986
1999.49	8.879	-4.876
1999.33	8.951	-4.551
1999.16	9.031	-4.307
1999.00	9.044	-4.580
1998.83	8.887	-5.138
1998.66	8.777	-4.793
1998.49	8.830	-4.637
1998.33	8.907	-4.541
1998.16	9.032	-4.396
1998.00	9.089	-4.091
1997.83	8.956	-4.492
1997.66	8.888	-4.762
1997.49	8.800	-4.980
1997.33	8.921	-4.857
1997.16	9.119	-4.350
1997.00	9.063	-4.835
1996.83	8.967	-4.915
1996.66	8.889	-4.993
1996.49	8.788	-5.148
1996.33	8.946	-4.797
1996.16	9.154	-4.040
1996.00	9.071	-4.390
1995.83	8.943	-4.740
1995.66	8.877	-4.825
1995.49	8.843	-4.910
1995.33	9.017	-4.315
1995.16	9.211	-3.750
1995.00	9.038	-4.430
1994.83	8.922	-5.120
1994.66	8.848	-5.110
1994.49	8.864	-5.008
1994.33	8.933	-4.445
1994.16	9.084	-4.220
1994.00	9.194	-3.840
1993.83	8.963	-4.277
1993.66	8.838	-4.997
1993.49	8.804	-4.960
1993.33	8.913	-4.685
1993.16	9.136	-4.340
1993.00	9.104	-4.230
1992.83	8.903	-4.740
1992.66	8.766	-4.820
1992.49	8.814	-4.575
1992.33	8.914	-4.330
1992.16	9.065	-3.960
1992.00	9.154	-3.590
1991.83	8.955	-4.610
1991.66	8.830	-4.880
1991.49	8.856	-4.833
1991.33	8.948	-4.287
1991.16	9.066	-4.063
1991.00	9.031	-4.070
1990.83	8.926	-4.177
1990.66	8.850	-4.870
1990.49	8.892	-4.477
1990.33	9.000	-4.283
1990.16	9.110	-4.390
1990.00	9.042	-4.880
1989.83	8.886	-5.070
1989.66	8.850	-4.980
1989.49	8.828	-4.690
1989.33	9.039	-4.295
1989.16	9.161	-4.240
1989.00	9.047	-4.833
1988.83	8.911	-5.007
1988.66	8.827	-5.190
1988.49	8.878	-4.695
1988.33	8.991	-4.200
1988.16	9.105	-4.310
1988.00	9.158	-4.420
1987.83	8.887	-4.533
1987.66	8.884	-5.080
1987.49	8.822	-5.080
1987.33	8.932	-5.047
1987.16	9.050	-4.673
1987.00	9.143	-4.480
1986.83	8.975	-4.693
1986.66	8.864	-5.433
1986.49	8.836	-5.340
1986.33	8.918	-4.880
1986.16	9.153	-3.870
1986.00	9.052	-4.680
1985.83	8.959	-4.730
1985.66	8.917	-5.030
1985.49	8.967	-4.067
1985.33	9.052	-4.880
1985.16	9.202	-3.937
1985.00	9.063	-4.290
1984.83	8.892	-5.160
1984.66	8.815	-5.100
1984.49	8.862	-5.460
1984.33	8.960	-4.740
1984.16	9.162	-4.060
1984.00	9.091	-4.300
1983.83	8.919	-4.563
1983.66	8.785	-4.850
1983.49	8.829	-5.080
1983.33	8.946	-4.803
1983.16	9.188	-3.960
1983.00	9.063	-4.686
1982.83	8.897	-4.683
1982.66	8.782	-5.106
1982.49	8.866	-4.596
1982.33	9.002	-4.508
1982.16	9.146	-4.421
1982.00	9.236	-4.333
1981.83	9.007	-4.461
1981.66	8.767	-5.263
1981.49	8.894	-5.613
1981.33	8.981	-4.498
1981.16	9.165	-4.225
1981.00	9.177	-4.108
1980.83	9.018	-4.358
1980.66	8.904	-4.607
1980.49	8.825	-4.857
1980.33	8.952	-4.939
1980.16	9.054	-4.600
1980.00	9.145	-3.741
1979.83	9.013	-4.270
1979.66	8.922	-4.758
1979.49	8.913	-5.206
1979.33	9.043	-4.819
1979.16	9.179	-4.296
1979.00	9.242	-4.283
1978.83	9.124	-4.383
1978.66	8.931	-4.756
1978.49	8.789	-5.272
1978.33	9.028	-4.951
1978.16	9.156	-4.208
1978.00	9.081	-4.128
1977.83	8.951	-4.489
1977.66	8.991	-4.822
1977.49	8.878	-5.027
1977.33	9.062	-4.579
1977.16	9.262	-4.282
1977.00	9.127	-4.471
1976.83	8.943	-4.649
1976.66	8.817	-4.816
1976.49	8.846	-4.943
1976.33	8.949	-5.025
1976.16	9.098	-5.060
1976.00	NA	NA
1975.83	9.027	-4.225
1975.66	8.864	-5.086
1975.49	8.809	-5.316
1975.33	8.876	-4.873
1975.16	9.033	-4.408
1975.00	9.157	-3.923
1974.83	9.091	-4.115
1974.66	8.914	-4.991
1974.49	8.875	-5.149
1974.33	8.920	-4.946
1974.16	9.019	-4.723
1974.00	9.184	-3.924
1973.83	9.103	-4.462
1973.66	8.905	-4.846
1973.49	8.848	-5.181
1973.33	8.888	-4.918
1973.16	9.005	-4.678
1973.00	9.130	-4.086
1972.83	8.956	-4.122
1972.66	8.817	-4.943
1972.49	8.857	-4.967
1972.33	8.973	-4.572
1972.16	9.108	-4.091
1972.00	9.136	-4.017
1971.83	9.042	-3.949
1971.66	8.910	-4.489
1971.49	8.777	-4.922
1971.33	8.930	-4.642
1971.16	9.034	-4.073
1971.00	9.147	-3.858
1970.83	8.978	-4.105
1970.66	8.855	-4.338
1970.49	8.795	-4.556
1970.33	8.836	-4.849
1970.16	9.049	-3.951
1970.00	9.158	-3.817
1969.83	9.044	-3.957
1969.66	8.856	-4.434
1969.49	8.801	-4.812
1969.33	8.899	-4.840
1969.16	9.108	-4.272
1969.00	9.169	-3.779
1968.83	9.057	-3.450
1968.66	8.920	-4.147
1968.49	8.841	-4.471
1968.33	8.914	-4.580
1968.16	9.076	-3.875
1968.00	9.190	-3.215
1967.83	9.021	-3.831
1967.66	8.926	-4.269
1967.49	8.806	-4.749
1967.33	8.898	-4.654
1967.16	8.991	-4.173
1967.00	9.135	-3.692
1966.83	8.927	-3.745
1966.66	8.947	-4.347
1966.49	8.765	-4.510
1966.33	8.927	-4.016
1966.16	8.991	-3.134
1966.00	9.153	-3.898
1965.83	8.988	-4.384
1965.66	8.878	-4.650
1965.49	8.831	-4.696
1965.33	8.871	-4.265
1965.16	9.058	-3.655
1965.00	9.159	-3.954
1964.83	9.021	-4.300
1964.66	8.879	-4.536
1964.49	8.809	-4.661
1964.33	8.878	-4.632
1964.16	8.985	-4.253
1964.00	9.145	-4.125
1963.83	8.974	-4.326
1963.66	8.861	-4.593
1963.49	8.845	-4.924
1963.33	8.887	-4.578
1963.16	9.089	-3.766
1963.00	9.230	-3.977
1962.83	9.000	-4.914
1962.66	8.917	-4.803
1962.49	8.866	-4.515
1962.33	8.940	-3.905
1962.16	9.086	-3.719
1962.00	9.177	-3.958
1961.83	9.062	-4.443
1961.66	8.874	-4.864
1961.49	8.850	-4.653
1961.33	8.928	-4.214
1961.16	9.079	-3.903
1961.00	9.191	-3.721
1960.83	9.088	-4.304
1960.66	8.924	-4.929
1960.49	8.848	-4.844
1960.33	8.931	-4.708
1960.16	8.935	-4.163
1960.00	9.143	-3.780
1959.83	9.029	-4.693
1959.66	8.894	-5.132
1959.49	8.814	-5.012
1959.33	8.848	-4.632
1959.16	9.088	-4.092
1959.00	9.139	-4.043
1958.83	9.025	-4.555
1958.66	8.857	-5.101
1958.49	8.800	-5.215
1958.33	8.853	-5.022
1958.16	9.002	-4.455
1958.00	9.118	-4.141
1957.83	9.049	-4.373
1957.66	8.917	-4.728
1957.49	8.813	-5.080
1957.33	8.880	-4.814
1957.16	9.049	-4.332
1957.00	9.171	-3.872
1956.83	9.042	-4.290
1956.66	8.934	-4.774
1956.49	8.865	-4.872
1956.33	8.897	-4.798
1956.16	9.034	-4.428
1956.00	9.171	-3.762
1955.83	8.982	-4.473
1955.66	8.879	-4.864
1955.49	8.830	-4.704
1955.33	8.969	-4.643
1955.16	9.106	-4.411
1955.00	9.169	-4.009
1954.83	8.996	-4.348
1954.66	8.842	-4.734
1954.49	8.738	-5.166
1954.33	8.786	-5.055
1954.16	8.966	-4.766
1954.00	9.070	-3.875
1953.83	8.872	-4.313
1953.66	8.898	-4.842
1953.49	8.818	-5.059
1953.33	8.917	-4.843
1953.16	9.035	-3.856
1953.00	9.134	-3.748
1952.83	9.005	-4.127
1952.66	8.875	-4.579
1952.49	8.796	-5.104
1952.33	8.846	-5.133
1952.16	8.953	-4.834