# 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-core1-10yr-noaa.txt # Data_Download_Description: NOAA Template File; Decadal-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 decadal # First_Year: 0 # Last_Year: 1999 # Time_Unit: year Common Era # Core_Length_m: # Parameter_Keywords: oxygen isotopes # Notes: #-------------------- # Chronology_Information # Chronology: From Thompson et al. 2006: "The low relief between the top of Puruogangri and the surrounding terrain facilitates deposition of plant fragments on the ice cap; consequently, three such samples were recovered from the cores. The radiocarbon dates near the bottom of C1 (RC1) and C2 (RC3) were useful for the development of the longer-term Holocene records. The two-parameter model was used to construct a timescale ... the upper horizon (z1 = 23.07 mbs at T1 = 84 years BP) was transferred from the annually dated part of C2 by δ18O curve matching. The lower horizon at 114.0 mbs was radiocarbon dated at 2200 ± 110 years before AD 1950 ... with the value of p calculated from these two points as 0.35 " #-------------------- # 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_bot_CE ice age at sample start,,,year Common Era,,ice cores,,,N, ## age_top_CE ice age at sample end,,,year Common Era,,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: age_bot_CE age_top_CE d18Osmow 1990 1999 -12.2 1980 1989 -12.05 1970 1979 -13.05 1960 1969 -12.97 1950 1959 -13.53 1940 1949 -14.23 1930 1939 -13.11 1920 1929 -11.4 1910 1919 -12.9 1900 1909 -15.39 1890 1899 -15.3 1880 1889 -13.53 1870 1879 -13.34 1860 1869 -14.33 1850 1859 -15.02 1840 1849 -14.74 1830 1839 -13.87 1820 1829 -15.87 1810 1819 -16.91 1800 1809 -15.63 1790 1799 -14 1780 1789 -14.25 1770 1779 -14.56 1760 1769 -14.58 1750 1759 -15.25 1740 1749 -15.43 1730 1739 -15.18 1720 1729 -15.28 1710 1719 -15.29 1700 1709 -13.95 1690 1699 -14.61 1680 1689 -15.44 1670 1679 -14.11 1660 1669 -14.59 1650 1659 -13.04 1640 1649 -11.86 1630 1639 -13.93 1620 1629 -15.23 1610 1619 -14.25 1600 1609 -14.07 1590 1599 -16.3 1580 1589 -15.48 1570 1579 -15.14 1560 1569 -14.29 1550 1559 -13.76 1540 1549 -14.46 1530 1539 -16.01 1520 1529 -15.94 1510 1519 -14.6 1500 1509 -14.43 1490 1499 -14.91 1480 1489 -14.22 1470 1479 -14.55 1460 1469 -12.28 1450 1459 -14.17 1440 1449 -15.04 1430 1439 -15.25 1420 1429 -15 1410 1419 -15.05 1400 1409 -13.67 1390 1399 -15.03 1380 1389 -14.83 1370 1379 -13.72 1360 1369 -15.13 1350 1359 -17.04 1340 1349 -17.48 1330 1339 -15.2 1320 1329 -15.13 1310 1319 -15.03 1300 1309 -13.45 1290 1299 -12.22 1280 1289 -14.03 1270 1279 -16.03 1260 1269 -14.87 1250 1259 -14.65 1240 1249 -16.1 1230 1239 -17.7 1220 1229 -14.61 1210 1219 -17.03 1200 1209 -16.13 1190 1199 -15.4 1180 1189 -14.35 1170 1179 -14.44 1160 1169 -14.79 1150 1159 -15.44 1140 1149 -14.6 1130 1139 -14.92 1120 1129 -15.01 1110 1119 -15.6 1100 1109 -15.98 1090 1099 -15.07 1080 1089 -15.06 1070 1079 -14.27 1060 1069 -14.72 1050 1059 -13.7 1040 1049 -16.58 1030 1039 -14.32 1020 1029 -15.01 1010 1019 -15.33 1000 1009 -17.08 990 999 -14.23 980 989 -15.22 970 979 -16.68 960 969 -15.48 950 959 -16.9 940 949 -14.57 930 939 -13.75 920 929 -14.15 910 919 -14.52 900 909 -14.63 890 899 -12.37 880 889 -11.25 870 879 -16.09 860 869 -15.77 850 859 -13.72 840 849 -13.62 830 839 -13.36 820 829 -14.26 810 819 -15.36 800 809 -13.84 790 799 -14.76 780 789 -15.1 770 779 -14.18 760 769 -16.88 750 759 -14.99 740 749 -13.66 730 739 -15.18 720 729 -15.29 710 719 -15.23 700 709 -15.09 690 699 -13.9 680 689 -15.15 670 679 -13.06 660 669 -14.29 650 659 -14.32 640 649 -12.53 630 639 -13.88 620 629 -14.22 610 619 -14.1 600 609 -13.03 590 599 -13.85 580 589 -14.07 570 579 -14.45 560 569 -14.36 550 559 -13.72 540 549 -15.58 530 539 -14.87 520 529 -13.86 510 519 -14.65 500 509 -13.29 490 499 -14.36 480 489 -15.26 470 479 -14.31 460 469 -16.09 450 459 -14.95 440 449 -14.05 430 439 -14.18 420 429 -14.35 410 419 -14.09 400 409 -14.86 390 399 -13.54 380 389 -12.64 370 379 -13.56 360 369 -13.95 350 359 -13.23 340 349 -15.64 330 339 -15.5 320 329 -14.66 310 319 -15.64 300 309 -13.92 290 299 -14.01 280 289 -14.36 270 279 -15.95 260 269 -14.75 250 259 -15.16 240 249 -14.05 230 239 -16.22 220 229 -14.56 210 219 -16.36 200 209 -12.11 190 199 -14.22 180 189 -12.98 170 179 -15.45 160 169 -13.9 150 159 -12.9 140 149 -13.64 130 139 -12.66 120 129 -14.84 110 119 -15.3 100 109 -15.6 90 99 -16.12 80 89 -14.96 70 79 -15.23 60 69 -15.79 50 59 -15.59 40 49 -14.94 30 39 -15.16 20 29 -15.86 10 19 -16.03 0 9 -15.54