Climate records obtained by most instruments are relatively short in time, which limits the study of climate change, necessitating the use of proxy data to extend records to the past. It was not until the late 1940s that atmospheric data of sufficient quality and spatial resolution were available to determine the main patterns of climate change such as the North American Pacific model and the Pacific Decadal Oscillation. The global ice cores are from the north and south poles and the third pole, and there are also mountain glaciers in Alaska. The ice core data obtained in that area are of great significance for revealing the climate in North America and climate change in the Arctic regions at both low and high latitudes. The physical meaning of each variable: First column: time; second column: accumulation rate data; third column: oxygen isotope data value
From 1000 AD to the present, the concentration of methane in the atmosphere has increased significantly in the ice cores of the Antarctic and Arctic. These data came from the Tasmanian laboratory of Australia, where the high resolution data were obtained by using wet extraction of ice core samples, and the same measurement and calibration procedures were applied to all samples. The results are consistent with the results of internationally renowned ice core greenhouse gas laboratories such as the University of Bern, the University of Copenhagen and the University of Ohio. The physical meaning of each variable: First column: time; second column: methane concentration value
This data was reconstructed based on the history of perchlorate from 1956 to 2004 in Miaoergou ice core (94°19 'E,43°03 'N, 4518 m) in east Tianshan mountain. Data content: perchlorate from 1956 to 2004 (including: Cl-, NO3- and SO42-). Data was measured by ESI-MS/MS; Data quality: the blank sample was significantly lower than the sample values, and the quality was good. Data application result and prospect: The data has been published, the detailed information can be found in the published paper. Zhiheng Du, Cunde Xiao, Vasile I. Furdui C,Wangbin Zhang. (2019). The perchlorate record during 1956–2004 from Tienshan ice core, East Asia. Science of the Total Environment. Time range and resolution: 1956-2004 AD, and annual resolution.
The data of triode ice core mainly comes from NOAA (National Oceanic and Atmospheric Administration, https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/ice-core). The original data is mainly in text format, which is provided by relevant units and researchers voluntarily. The data mainly includes the original observation data such as oxygen isotope, greenhouse gas concentration, ice core age, etc., as well as the historical temperature, carbon dioxide concentration and methane concentration produced by the researchers according to the observation data. The data are mainly divided into Antarctic, Arctic, Greenland and the third polar region. The database includes drilling address, time, derivative products, corresponding observation site data, references and other elements. Derivative products include product name, type, time and other elements. The space location is divided into the south pole, the north pole and the third pole, including Alaska, Canada, Russia, Greenland and other regions. After sorting and post-processing the collected data, the ice core database is established by using the access database management system of Microsoft office. According to the Antarctic, Arctic, Greenland and the third pole, it is divided into four sub databases. The first table in each database is readme, which contains information and references of each data table.
This project is based on the data of bioactive elements such as Fe in miaergou ice core (94 ° 19 ′ e, 43 ° 03 ′ n, 4518 m) of the East Tianshan Mountains, and rebuilt the metal element history of 1956-2004. Data content: 1956-2004 ice core metal elements (including Fe, CD, Pb, as, Ba, Al, s, Mn, CO and Ni); data source, through ICP-MS test; data quality: blank sample is significantly lower than sample value, with better quality; data application results and prospects: data has been published, see Du, Z., Xiao, C., Zhang, W., Handley, M. J., mayewski, P. A., Liu, Y., & Li, X. (20. 19). Iron record associated with sandstorms in a central Asian shallow ice core spanning 1956-2004. Atmospheric environment, 203, 121-130. It can provide comparative study of other ice cores in Central Asia.
The Greenland Ice Sheet Project Two (GISP2), initiated by the United States, has provided detailed oxygen isotope data for a time span of more than 100,000 years, covering almost the entire glacial-interglacial cycle. These data include the oxygen isotope changes from 818 to 1987, with a clear record showing that the Little Ice Age was the coldest period of the past 1000 years. Fluctuating warming occurred from 1850 to 1987, and the changes were consistent with those of GRIP, NGRIP and the latest NEEM ice core obtained in Greenland. This finding indicated that the snow and ice records from the Greenland ice sheet were highly consistent. The physical meaning of each variable is as follows: First column: ice core depth; second column: oxygen isotope value; third column: time
This data set contains the oxygen isotope, dust, anion and accumulation data obtained from the deep ice core drilled in 1992 in the Guliya ice cap, which is located in the west Kunlun Mountains on the Tibetan Plateau. The length of the ice core was 308.6 m. The ice core was cut into samples, 12628 of which were used to measure the oxygen isotope values, 12480 of which were used to measure the dust concentrations, and 9681 of which were used to measure the anion concentrations. Data Resource: National Centers for Environmental Information（http://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/ice-core）. Processing Method: Average. The data set contains 4 tables, namely: oxygen isotope, dust and anion data from different depths in the Guliya ice core, 10-year mean data of oxygen isotopes, dust, anions and net accumulation in the Guliya ice core, 400-year mean data of oxygen isotopes, dust and anions in the Guliya ice core, and chlorine-36 data from different depths. Table 1: Data on oxygen isotopes, dust and anion concentrations at different depths in the Guliya ice core. a. Name explanation Field 1: Depth Field 2: Oxygen isotope value Field 3: Dust concentration (diameter 0.63 to 20 µm) Field 4: Cl- Field 5: SO42- Field 6: NO3- b. Dimensions (unit of measure) Field 1: m Field 2: ‰ Field 3: particles/mL Field 4: ppb Field 5: ppb Field 6: ppb Table 2: 10-year mean oxygen isotope, dust, anion and net accumulation data for the Guliya ice core (0-1989) a. Name explanation Field 1: Start time Field 2: End time Field 3: Oxygen isotope value Field 4: Dust concentration (diameter 0.63 -20 µm) Field 5: Cl- Field 6: SO42- Field 7: NO3- Field 8: Net accumulation b. Dimensions (unit of measure) Field 1: Dimensionless Field 2: Dimensionless Field 3: ‰ Field 4: particles/mL Field 5: ppb Field 6: ppb Field 7: ppb Field 8: cm/year Table 3: 400-year mean oxygen isotope, dust and anion data for the Guliya ice core. a. Name explanation Field 1: Time Field 2: Oxygen isotope Field 3: Dust concentration (diameter 0.63-20 µm) Field 4: Cl- Field 5: SO42- Field 6: NO3- b. Dimensions (unit of measure) Field 1: Millennium Field 2: ‰ Field 3: particles/mL Field 4: ppb Field 5: ppb Field 6: ppb Table 4: Chlorine-36 data at different depths a. Name explanation Field 1: Depth Field 2: 36Cl Field 3: 36Cl error Field 4: Year b. Dimensions (unit of measure) Field 1: m Field 2: 104 atoms g-1 Field 3: % Field 4: Millennium
This data set contains data from the three ice cores drilled from the Dunde ice cap in the northern Tibetan Plateau in 1987. Core D-1 has a length of 139.8 m and is divided into 3585 samples for isotope analysis. Core D-3 has a length of 138.4 m, and the upper 56 m was cut into several samples on site and stored in bottles after melting, while the remaining length was frozen and preserved. The data set contains three data tables, namely, 10-year mean oxygen isotope data for the Dunde ice core (520-1987 A.D.), 5-year mean water equivalent accumulation data for Dunde ice core and 10-year mean dust data for the Dunde ice core. Data source: National Centers for Environmental Information (http://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/ice-core). Processing method: Average. Table 1: 10-year mean oxygen isotope data for core D-3 (520 - 1987 A.D.) a. Name explanation Field 1: Start time Field 2: End time Field 3: Oxygen isotope value b. Dimensions (units of measure) Field 1: Dimensionless Field 2: Dimensionless Field 3: ‰ Data Table 2: 5-year mean water equivalent accumulation data for core D-1 (1606-1984) a. Name explanation Field 1: Start time Field 2: End time Field 3: Accumulation b. Dimensions (units of measure) Field 1: Dimensionless Field 2: Dimensionless Field 3: m Data Sheet 3: 10-year mean dust data for core D-3 (520 - 1987 A.D.) a. Name explanation Field 1: Start time Field 2: End time Field 3: Dust (diameter 0.63-16 µm) Field 4: Dust (diameter 2.00-60 µm) Field 5: Cl- Field 6: SO42- Field 7: NO3- b. Dimensions (units of measure) Field 1: Dimensionless Field 2: Dimensionless Field 3: Particles/mL Field 4: Particles/mL Field 5: ppb Field 6: ppb Field 7: ppb
Original information on the long-term dry-wet index (1500-2000) in western China is obtained by integrating data on dry-wet/drought-flood conditions and precipitation amounts in the western region published over more than a decade. The integrated data sets include tree rings, ice cores, lake sediments, historical materials, etc., and there are more than 50 such data sets. In addition to widely collecting representative data sets on dry-wet changes in the western region, this study also clarifies the main characteristics of the dry-wet changes and climate zones in the western region, and the long-term dry-wet index sequence was generated by extracting representative data from different zones. The data-based dry-wet index sequence has a 10-year temporal resolution for five major characteristic climate zones in the western region over nearly four hundred years and a high resolution (annual resolution) for three regions over the past five hundred years. The five major characteristic climate zones in the western region with a 10-year dry-wet index resolution over the last four hundred years are the arid regions, plateau bodies, northern Xinjiang, Hetao region, and northeastern plateau, and the three regions with a annual resolution over the last five hundred years are the northeastern plateau, Hetao region, and northern Xinjiang. For a detailed description of the data, please refer to the data file named Introduction of Dry-Wet Index Sequence Data for West China.doc.
This data set comprises the oxygen isotope, dust, anion and accumulation data of the two ice cores drilled from the Dasuopu glacier on the Tibetan Plateau in 1997. The depth of the Dasuopu ice core 2(C2) is 149.2 meters, while that of the Dasuopu ice core 3(C3) is 167.7 meters. C3 was drilled from the top of the glacier, and C2 was drilled 100 meters below. The data set contains 3 tables: the oxygen isotope, dust, and main anion average data of Dasuopu ice core 3 (1450-1996), the 10-year of oxygen isotope, dust, and main anion average data of Dasuopu ice core 3 (1000-1996), and the accumulation data of Dasuopu ice cores 2 and 3（1442-1996）. Source of the data：National Centers for Environmental Information（http://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/ice-core） Table 1：The annual average data of oxygen isotope, dust, and main anion of Dasuopu ice core 3 (1450-1996) a. Name interpretation Field 1：time Field 2：oxygen isotope Field 3：dust (diameter 0.63-20 um) Field 4：Cl- Field 5：NO3- Field 6：SO42- b. Dimension（unit of measurement） Field 1：dimensionless Field 2：‰ Field 3：particles/mL Field 4：ppb Field 5：ppb Field 6：ppb Table 2：The 10-year oxygen isotope, dust, and main anion data of Dasuopu ice core 3 (1000-1996) a. Name interpretation Field 1：start time Field 2：end time Field 3：oxygen isotope Field 4：dust (diameter 0.63-20 um) Field 5：Cl- Field 6：NO3- Field 7：SO42- b. Dimension（unit of measurement） Field 1：dimensionless Field 2：dimensionless Field 3：‰ Field 4：particles/mL Field 5：ppb Field 6：ppb Field 7：ppb Table 3：the accumulation data of Dasuopu ice cores 2 and 3 （1442-1996） a. Name interpretation Field 1：time Field 2：ice core 2 Field 3：ice core 3 B. Dimension （unit of measurement） Field 1：dimensionless Field 2：cm/yr Field 3：cm/yr