This dataset contains monthly 0.05°×0.05° (1982, 1985, 1990, 1995, and 2000) and 0.01°×0.01° (2005, 2010, 2015 and 2017) LST products in Qilian Mountain Area. The dataset was produced based on SW algorithm by AVHRR BT from thermal infrared channels (CH4: 10.5µm to 11.3µm; CH5: 11.5µm to 12.5µm) at a resolution of 0.05°, MYD21A1 LST products at a resolution of 0.01° along with some auxiliary datasets. The auxiliary datasets include IGBP land cover type, AVHRR NDVI products, Modern Era Retrospective-Analysis for Research and Applications-2 (MERRA-2) reanalysis data, ASTER GED, Lat/Lon and the Julian Day information.
WANG Junbo, SHAO Xuemei
By collecting the tree ring width data in the Qilian Mountain and its surrounding areas, a regional tree ring chronological network is established. On this basis, the variability of Standardized Precipitation Evapotranspiration Index (SPEI) in the Qilian mountain area from May to August in recent 200 years is reconstructed by using the point by point reconstruction method, and the spatial resolution of the reconstruction is 0.5 * 0.5 degrees. All the data contained in this data set have passed the tests commonly used in tree ring climatology research, such as error reduction (RE), efficiency coefficient (CE) and correlation coefficient. The data can be used to analyze the temporal and spatial variation of drought in Qilian Mountain and its surrounding areas in the past 200 years.
DENG Yang
The application of general circulation models (GCMs) can improve our understanding of climate forcing. In addition, longer climate records and a wider range of climate states can help assess the ability of the models to simulate climate differences from the present. First, we try to find a substitute index that combines the effects of temperature in different seasons and then combine it with the Beijing stalagmite layer sequence and the Qilian tree-ring sequence to carry out a large-scale temperature reconstruction of China over the past millennium. We then compare the results with the simulated temperature record based on a GCM and ECH-G for the past millennium. Based on the 31-year average, the correlation coefficient between the simulated and reconstructed temperature records was 0.61 (with P < 0.01). The asymmetric V-type low-frequency variation revealed by the combination of the substitute index and the simulation series is the main long-term model of China's millennium-scale temperature. Therefore, solar irradiance and greenhouse gases can account for most of the low-frequency variation. To preserve low-frequency information, conservative detrended methods were used to eliminate age-related growth trends in the experiment. Each tree-ring series has a negative exponential curve installed while retaining all changes. The four fields of the combined 1000-yr (1000 AD-2000 AD) reconstructed temperature records derived from stalagmite and tree-ring archives (excel table) are as follows: 1) Year 2) Annual average temperature reconstruction 3) Reconstructed temperature deviation 4) Simulated temperature deviation
TAN Ming
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.
QIAN Weihong, LIN Xiang
This data is the ring width chronology of Three Shrub overlord sample points in Badain Jilin desert in the upper reaches of Heihe River Basin, which represents the climate change of dry and wet in the desert area in the past 160 years.
XIAO Shengchun
In order to find out the climate and environmental changes since the last interglacial period in Central Asia, the earth ring Institute of Chinese Academy of Sciences, taking tree rings, lakes, stalagmites and loess as carriers, conducted in-depth research on their evolution from different aspects. The tree ring group collected tree ring samples and obtained the data of tree ring width in alagan, Yuli County, Xinjiang; The lake marsh formation collected lake marsh sediments in Kashgar basin and obtained 137cs-210pb, LOI δ 18O data; The stalagmites collected by the stalagmite formation in qiongguo cave, Qinghai Tibet Plateau have obtained carbon and oxygen isotopes, test age and element test data; The comprehensive group obtained the XRF and multi parameter data of peat in Longmucuo and dangyayongcuo lakes, the particle size of Longmucuo in Lop Nur, Xinjiang and Tibet, the magnetic susceptibility of peat in Kashgar and Longmucuo lakes, and the TOC data of Zhaosu; The Loess group obtained the OSL ages, MS and carbon epitope data of the Loess of xiaoerbu, Zhaosu and Qingshuihe in Xinjiang. It provides strong scientific data support for climate and environmental changes since the last interglacial period in Central Asia.
LI Qiang , LAN Jianghu , TAN Liangcheng , LIU Xingxing , SONG Yougui
Data content: Standard ring-width chronology derived from Wilson juniper shrub around the northern shore of the Nam Co Lake; May-June SZI (Standardized Moisture Anomaly Index) drought reconstruction for the Nam Co region. Time span: 1605 to 2010. Temporal resolution: Yearly. Application and prospects: Hydroclimate study on the south-central Tibetan Plateau.
LU Xiaoming, HUANG Ru, WANG Yafeng, ZHANG Baoqing, ZHU Haifeng, CAMARERO J. Julio, LIANG Eryuan
There are 396 temperature-sensitive proxy data for the past millennium over the Northern Hemisphere, including 370 tree rings, 15 ice cores, 9 lake sediments and 2 historical documents; This data is derived from the global temperature proxy dataset released by PAGES2k Consortum in 2017; During the process of temperature assimilation in the past millennium (1000-2000 AD) in the Northern Hemisphere, the data were further screened, and only the data with annual resolution were retained; The proxy data contained in the dataset have passed strict quality inspection and temperature signal verification; The data set can be used to reconstruct the temperature of the Northern Hemisphere at the hemispherical and regional scales for the past millennium.
FANG Miao
This data is the runoff data of nalun hydrological station in the upper reaches of the SYR River from 1753 to May to August 2017 reconstructed based on tree ring data. It is obtained from the tree ring hydrological research jointly carried out by Urumqi desert Meteorological Institute of China Meteorological Administration and the Institute of water and Hydropower of the Kyrgyz National Academy of Sciences. The data can be used for scientific research such as water resources assessment and water conservancy projects in mountainous areas of Central Asia, and the observation time is the calibration period, The linear transformation equation of runoff and tree ring data is established to reconstruct the path quantity. Data period: 1753 to 2017. Data element: average runoff from May to August (m3 / s) Station location: 41.43 ° ″ n, 76.02 ° ″ e, 2039m
ZHANG Ruibo
The annual ring is the main technical means for carrying out the variance analysis, and it is also one of the methods to establish the expansion of water consumption time of plant transpiration. In 2001, this project sampled 60 Populus euphratica in Ejin Oasis and measured the age and ring width index.
SI Jianhua
This data set consists of tree ring carbon and oxygen data in central Serbia in westerly region. The tree rings in central Serbia include two tree cores (C50 and C58), the tree species is Bosnia pine, and the measured isotopic data are 542. Cellulose was extracted from tree ring logs by chemical treatment, and the obtained cellulose samples were wrapped in a silver cup. The isotopic ratio was measured by Delta V advantage stable isotope mass spectrometer, and the analysis error was less than 0.21 ‰. The experimental analysis was completed in the laboratory of soil structure and minerals, Institute of Geology and Geophysics, Chinese Academy of Sciences. The climate type of Serbia is single. As shown in the thumbnail, the oxygen isotope sequences of tree rings (C50 and C58) in central Serbia and southern Serbia (H01, H02, H05 and H08) are highly correlated. Therefore, the carbon and oxygen isotope data sets of tree rings in central and southern Serbia (a total of 6 tree cores) are of certain significance for the study of Serbian paleoclimate in westerly region.
XU Chenxi
This data set consists of tree ring carbon and oxygen data and tree ring carbon and oxygen data in East Asian monsoon region and Northeast China. Tree rings in Northeast China include 4 tree cores, the tree species is Korean pine, and the measured isotopic data is 903. Cellulose was extracted from tree ring logs by chemical treatment, and the obtained cellulose samples were wrapped in a silver cup. The isotopic ratio was measured by Delta V advantage stable isotope mass spectrometer, and the analysis error was less than 0.21 ‰. The experimental analysis was completed in the laboratory of soil structure and minerals, Institute of Geology and Geophysics, Chinese Academy of Sciences. This data has certain significance for the study of paleoclimate in East Asian monsoon region.
XU Chenxi
This data set consists of tree ring carbon and oxygen data in East Asian monsoon region and Qilian Mountain region of China. Tree rings in Qilian mountain area include 4 tree cores, the tree species is Sabina przewalskii, and the measured isotopic data is 921. Cellulose was extracted from tree ring logs by chemical treatment, and the obtained cellulose samples were wrapped in a silver cup. The isotopic ratio was measured by Delta V advantage stable isotope mass spectrometer, and the analysis error was less than 0.21 ‰. The experimental analysis was completed in the laboratory of soil structure and minerals, Institute of Geology and Geophysics, Chinese Academy of Sciences. This data has certain significance for the study of paleoclimate in East Asian monsoon region.
XU Chenxi
This data set is composed of tree ring width data of Qilian Mountain region of China in East Asian monsoon region . The tree rings in Qilian mountain contain 52 tree cores, which have 17081 values, the measurement accuracy is 0.01mm, and the tree species is Qilian juniper. The tree ring width was measured by lintab 6 tree ring analyzer, and the cross dating is checked by coffcha program to guarantee that the accuracy of the dating. The experiment analysis was performed in the laboratory of soil structure and minerals, Institute of Geology and Geophysics, Chinese Academy of Sciences. This data has certain significance for the study of paleoclimate in the edge of East Asian monsoon region .
XU Chenxi
This data set consists of tree ring width data in southern Serbia in westerly region. The tree rings in southern Serbia include 24 tree cores, the tree species is Bosnia pine, the measured width data is 5148, and the measurement accuracy is 0.001mm. The width of tree ring is measured by lintab 6 tree ring analyzer, and the cross dating is checked by coffcha program to ensure that the measurement and dating of all tree core samples are accurate. The experimental analysis was completed in the laboratory of soil structure and minerals, Institute of Geology and Geophysics, Chinese Academy of Sciences. This data has certain significance for the study of paleoclimate in westerly area.
XU Chenxi
This data set is composed of tree ring width data in East Asian monsoon region and Shennongjia region of China. The tree ring in Shennongjia area contain 128 tree cores, and the tree species is Abies fargesii. The measured width data is 18936, and the measurement accuracy is 0.01mm. The width of tree ring is measured by lintab 6 tree ring analyzer, and the cross dating is checked by coffcha program to ensure that the measurement and dating of all tree core samples are accurate. The experimental analysis was completed in the laboratory of soil structure and minerals, Institute of Geology and Geophysics, Chinese Academy of Sciences. This data has certain significance for the study of paleoclimate in the East Asian monsoon region.
XU Chenxi
This data set consists of tree ring width data in northern Serbia in the westerly region. Tree rings in northern Serbia include 23 tree cores, the tree species are oak, the measured width data is 1537, and the measurement accuracy is 0.001mm. The width of tree ring is measured by lintab 6 tree ring analyzer, and the cross dating is checked by coffcha program to ensure that the measurement and dating of all tree core samples are accurate. The experimental analysis was completed in the laboratory of soil structure and minerals, Institute of Geology and Geophysics, Chinese Academy of Sciences. This data has certain significance for the study of paleoclimate in westerly area.
XU Chenxi
This data set is composed of tree ring width data of Nanyue Mountain region of China in East Asian monsoon region . The tree rings in Nanyue mountain contain 22 tree cores, which have 3616 values, the measurement accuracy is 0.01mm, and the tree species is masson pine. The tree ring width was measured by lintab 6 tree ring analyzer, and the cross dating is checked by coffcha program to guarantee that the accuracy of the dating. The experiment analysis was performed in the laboratory of soil structure and minerals, Institute of Geology and Geophysics, Chinese Academy of Sciences. This data has certain significance for the study of paleoclimate in theEast Asian monsoon region .
XU Chenxi
This data set consists of tree ring carbon and oxygen data in southern Serbia in westerly region. Tree rings in southern Serbia include 4 tree cores, the tree species is Bosnia pine, and the measured isotopic data is 967. Cellulose was extracted from tree ring logs by chemical treatment, and the obtained cellulose samples were wrapped in a silver cup. The isotopic ratio was measured by Delta V advantage stable isotope mass spectrometer, and the analysis error was less than 0.21 ‰. The experimental analysis was completed in the laboratory of soil structure and minerals, Institute of Geology and Geophysics, Chinese Academy of Sciences. This data has certain significance for the study of paleoclimate in westerly area.
XU Chenxi
This data set consists of tree ring width data in central Serbia in westerly region. The tree rings in central Serbia include 15 tree cores, the tree species is lime, the measured width data is 1398, and the measurement accuracy is 0.001mm. The width of tree ring is measured by lintab 6 tree ring analyzer, and the cross dating is checked by coffcha program to ensure that the measurement and dating of all tree core samples are accurate. The experimental analysis was completed in the laboratory of soil structure and minerals, Institute of Geology and Geophysics, Chinese Academy of Sciences. This data has certain significance for the study of paleoclimate in westerly area.
XU Chenxi
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