# Puruogangri Ice Cap 7000 Year Isotope and Geochemical 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/11929
#   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-11929.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: 10.25921/3w5v-wm35
#
# Science_Keywords: Monsoon
#--------------------
# Resource_Links
#
# Data_Download_Resource:  https://www.ncei.noaa.gov/pub/data/paleo/icecore/trop/puruogangri/puruogangri2006-core1-1m-noaa.txt
#   Data_Download_Description: NOAA Template File; One-meter-averaged Data from Core 1
#
#--------------------
# Contribution_Date
#   Date: 2011-08-23
#--------------------
# File_Last_Modified_Date
#   Date: 2023-07-14
#--------------------
# Title
#   Study_Name: Puruogangri Ice Cap 7000 Year Isotope and Geochemical Data
#--------------------
# Investigators
#   Investigators: Thompson, L.G.(https://orcid.org/0000-0001-5371-2579); Yao, T.(https://orcid.org/0000-0002-8485-9140); Davis, M.E.(https://orcid.org/0000-0003-1049-5935); Mosley-Thompson, E.(https://orcid.org/0000-0002-9665-3705); Mashiotta, T.A.; Lin, P-N.(https://orcid.org/0000-0001-6006-0716); Mikhalenko, V.N.; Zagorodnov, V.S.
#--------------------
# Description_Notes_and_Keywords
#   Description: Puruogangri ice core oxygen isotopes, dust, ice accumulation, major anions (chloride, nitrate, sulfate) and cations (sodium, ammonium, potassium, magnesium, and calcium), presented as meter, decadal, or centennial averages from 7.0 to 0 ky BP.  
# 
# Puruogangri Ice Cap, Tanggula Mountains, Tibetan Plateau: 33°55'N, 89°05'E, 6070 meters above sea level
#--------------------
# Publication
#   Authors: Thompson, L.G., T. Yao, M.E. Davis, E. Mosley-Thompson, T.A. Mashiotta, P.-N. Lin, V.N. Mikhalenko, and V.S. Zagorodnov
#   Journal_Name: Annals of Glaciology
#   Published_Title: Holocene climate variability archived in the Puruogangri ice cap on the central Tibetan Plateau
#   Published_Date_or_Year: 2006
#   Volume: 43
#   Pages: 61-69
#   Issue: 1
#   Report_Number: 
#   DOI: 10.3189/172756406781812357
#   Full_Citation:
#   Abstract: Two ice cores (118.4 and 214.7 m in length) were collected in 2000 from the Puruogangri ice cap in the center of the Tibetan Plateau (TP) in a joint US-Chinese collaborative project. These cores yield paleoclimatic and environmental records extending through the Middle Holocene, and complement previous ice-core histories from the Dunde and Guliya ice caps in northeast and northwest Tibet, respectively, and Dasuopu glacier in the Himalaya. The high-resolution Puruogangri climate record since AD 1600 details regional temperature and moisture variability. The post-1920 period is characterized by above-average annual net balance, contemporaneous with the greatest 18O enrichment of the last 400 years, consistent with the isotopically inferred warming observed in other TP ice-core records. On longer timescales the aerosol history reveals large and abrupt events, one of which is dated ~4.7 kyr BP and occurs close to the time of a drought that extended throughout the tropics and may have been associated with centuries-long weakening of the Asian/Indian/African monsoon system. The Puruogangri climate history, combined with the other TP ice-core records, has the potential to provide valuable information on variations in the strength of the monsoon across the TP during the Holocene.
#--------------------
# Funding_Agency
#   Funding_Agency_Name: US National Science Foundation
#   Grant: 0117113
#--------------------
# Site_Information
#   Site_Name: Puruogangri Ice Cap
#   Location: China
#   Northernmost_Latitude: 33.9167
#   Southernmost_Latitude: 33.9167
#   Easternmost_Longitude: 89.0833
#   Westernmost_Longitude: 89.0833
#   Elevation_m: 6070
#--------------------
# Data_Collection
#   Collection_Name: Puruogangri Core 1 1-meter
#   First_Year: 
#   Last_Year: 
#   Time_Unit: 
#   Core_Length_m: 118.4
#   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)
#
## depth_top_m	depth at sample end,,,meter,,ice cores,,,N,
## d18Osmow	delta 18O,bulk ice,,per mil SMOW,,ice cores,averaged,isotope ratio mass spectrometry,N,
#--------------------
# Data:
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing_Values:
depth_top_m	d18Osmow
0	-12.77
1.03	-11.65
2.002	-12.91
3	-11.31
4.032	-11.06
5.01	-13.35
6.008	-14.05
7.007	-14.33
8.033	-10.52
9.024	-12.8
10.015	-12.62
11	-14.49
12.012	-12.04
13.013	-15.29
14.033	-14.49
15.009	-14.93
16.022	-14.65
17.022	-12.26
18.024	-12.58
19.015	-12.3
20.002	-11.85
21.005	-11.33
22.017	-12.48
23.003	-15.25
24.017	-15.65
25.025	-14.73
26.002	-15.26
27.022	-13.81
28.031	-12.7
29.01	-13.65
30.004	-16.13
31	-13.49
32.02	-14.91
33.015	-14.44
34.024	-14.45
35.03	-15.03
36.017	-16.94
37.005	-15.59
38.025	-15.03
39.009	-14.61
40.031	-13.93
41.022	-15.28
42.002	-13.06
43.01	-16.03
44.015	-14.65
45.02	-14.01
46.007	-14.47
47.026	-14.92
48.021	-15.33
49.018	-14.56
50.017	-16.2
51.003	-14.5
52.008	-14.26
53.029	-16.62
54.027	-16.49
55.025	-15.23
56.015	-16.39
57.025	-14.24
58	-14.35
59.027	-15.54
60.018	-15.6
61.002	-14.85
62.02	-14.39
63.017	-14.14
64.01	-13.33
65.028	-14.73
66.023	-13.94
67.02	-14.81
68.023	-15.46
69.008	-13.62
70.008	-17.08
71.013	-14.37
72.013	-13.68
73.012	-14.16
74.028	-14.92
75.003	-14.03
76.001	-14.71
77.018	-14.07
78	-14.94
79.017	-15.7
80.023	-14.01
81.017	-14.95
82.018	-15.07
83.011	-15.18
84.009	-13.87
85.013	-14.66
86.022	-14.51
87.016	-15.42
88.004	-13.78
89.018	-15.07
90.015	-16.63
91.008	-15.42
92.024	-14.26
93.002	-15.15
94.004	-14.99
95	-15.73
96.002	-14.69
97.011	-15.03
98.002	-15.66
99.02	-14.86
100.02	-14.15
101.016	-14.91
102.019	-13.96
103.02	-14.25
104.009	-14.47
105.005	-14.31
106.019	-14.72
107.019	-13.62
108.009	-15.48
109.009	-15.45
110.005	-15.3
111.003	-15.93
112.012	-15.67
113.015	-15.22
114.017	-16.33
115.02	-15.39
116.019	-13.3
117.02	-14.9
118.007	-14.01