This data set describes the temporal and spatial distribution of precipitation in the Upper Brahmaputra River Basin. We integrate (CMA, GLDAS, ITP-Forcing, MERRA2, TRMM) five sets of reanalysis precipitation products and satellite precipitation products, and combine the observation precipitation of 9 national meteorological stations from China Meteorological Administration (CMA) and 166 rain gauges of the Ministry of Water Resources (MWR) in the basin. The time range is 1981-2016, the time resolution is 3 hours, the spatial resolution is 5 km, and the unit is mm/h. The data will provide better data support for the study of Upper Brahmaputra River Basin, and can be used to study the response of hydrological process to climate change. Please refer to the instruction document uploaded with the data for specific usage information.
WANG Yuanwei WANG Lei LI Xiuping ZHOU Jing
Runoff is formed by atmospheric precipitation and flows into rivers, lakes or oceans through different paths in the basin. It is also used to refer to the amount of water passing through a certain section of the river in a certain period of time, i.e. runoff. Runoff data plays an important role in the study of hydrology and water resources, which affects the development of social economy in central Adam. This data is the flow of five Central Asian countries (Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan and Turkmenistan), which comes from the hydrometeorological bureaus of Central Asian countries. The time scale is the average annual data of 2015. This data provides basic data for the project, which is convenient to analyze the situation of eco hydrological water resources in Central Asia, and provides data support for project data analysis.
ET (ET) monitoring is crucial to agricultural water resource management, regional water resource utilization planning and socio-economic sustainable development.The limitations of traditional ET monitoring methods mainly lie in that they cannot observe a large area at the same time and can only be limited to observation points. Therefore, the cost of personnel and equipment is relatively high, and they can neither provide surface ET data, nor provide ET data of different land use types and crop types. Quantitative monitoring of ET can be achieved by using remote sensing. The characteristics of remote sensing information are that it can not only reflect the macroscopic structure characteristics of the earth surface, but also reflect the microscopic local differences. Version 2.0 (second edition) of the surface evapotranspiration data set of the heihe river basin from 2000 to 2013 is based on multi-source remote sensing data and the latest ETWatch model is adopted to estimate the raster image data. Its temporal resolution is monthly scale and the spatial resolution is 1km scale. The data covers the whole basin in millimeters.Data types include monthly, quarterly, and annual data. The projection information of the data is as follows: Albers equal-area cone projection, Central longitude: 110 degrees, First secant: 25 degrees, Second secant: 47 degrees, Coordinates by west: 4000000 meter. File naming rules are as follows: Monthly cumulative ET value file name: heihe-1km_2013m01_eta.tif Heihe represents the heihe river basin, 1km represents the resolution of 1km, 2013 represents the year of 2013, m01 represents the month of January, eta represents the actual evapotranspiration data, and tif represents the data in tif format. Name of quarterly cumulative ET value file: heihe-1km_2013s01_eta.tif Heihe refers to heihe river basin, 1km refers to the resolution of 1km, 2013 refers to 2013, s01 refers to january-march, is the first quarter, eta refers to the actual evapotranspiration data, and tif refers to the data in tif format. Annual cumulative value file name: heihe-1km_2013y_eta.tif Among them, heihe represents heihe river basin, 1km represents the resolution of 1km, 2013 represents the year of 2013, y represents the year, eta represents the actual evapotranspiration data, and tif represents the data in tif format.
The Qinghai Tibet Plateau belongs to the plateau mountain climate. The precipitation, its seasonal distribution and the change of precipitation forms have been one of the hot spots in the global climate change research. The data includes precipitation data of Qinghai Tibet Plateau, with spatial resolution of 1km * 1km, temporal resolution of month and year, and time coverage of 2000, 2005, 2010 and 2015. The data are obtained by Kring interpolation of meteorological data of National Meteorological Science Information Center. The data can be used to analyze the temporal and spatial distribution of precipitation over the Qinghai Tibet Plateau. In addition, the data can also be used to analyze the temporal and spatial variation of precipitation over the Qinghai Tibet Plateau, which is of great significance to the study of the ecological environment of the Qinghai Tibet Plateau.
"China's surface climate data daily value data set (V3.0)" contains 699 benchmarks and basic weather stations in China. Since January 1951, the station's air pressure, temperature, precipitation, evaporation, relative humidity, wind direction and wind speed, and sunshine hours. The number and the daily value data of the 0cm geothermal element. After the quality control of the data, the quality and integrity of each factor data from 1951 to 2010 is significantly improved compared with the similar data products released in the past. The actual rate of each factor data is generally above 99%, and the accuracy of the data is close. 100%. China Earth International Exchange Station Climate Data Daily Value Dataset (V3.0), mainly based on the ground-based meteorological data construction project archived "1951-2010 China National Ground Station data corrected monthly report data file (A0/A1/ A) The basic data set was developed. This data can provide a variety of basic drive data for other scientific research.
National Meteorological Information Center
Kara batkak glacier meteorological station in Western Tianshan Mountains, Kyrgyzstan (42 ° 9'46 ″ n, 78 ° 16'21 ″ e, 3280m). The observation data include hourly meteorological elements (temperature (℃), maximum temperature (℃), time of maximum temperature occurrence, minimum temperature (℃), minimum temperature occurrence time, 0.1mm hourly rainfall (mm), 0.5mm hourly rainfall (mm), instantaneous wind direction (°), instantaneous wind speed (M / S), 2-minute wind direction (°), 2-minute wind speed (M / s), 10 minute wind speed (M / s), maximum wind direction (°), maximum wind speed (°), maximum wind speed (°) Major wind speed (M / s), maximum wind speed time, wind direction (°), maximum wind speed (M / s), maximum wind speed time, maximum instantaneous wind speed and direction (°), maximum instantaneous wind speed (M / s), relative humidity (%), minimum relative humidity (%), occurrence time of minimum relative humidity, water pressure (HPA), dew point temperature (℃), air pressure (HPA), sea level pressure (HPA), maximum pressure (HPA) The time of the highest air pressure, the lowest pressure (HPA) and the lowest air pressure (time). Meteorological observation elements are processed into climatic data after accumulation and statistics, providing important data for planning, design and research of agriculture, forestry, industry, transportation, military, hydrology, medical and health care and environmental protection departments.
The remote sensing monitoring database of China's land use status is a multi temporal land use status database covering the land area of China after years of accumulation under the support of national science and technology support plan, important direction project of knowledge innovation project of Chinese Academy of Sciences. The data set includes seven periods: the end of 1980s, 1990, 1995, 2000, 2005, 2010 and 2015. The data production is based on the Landsat TM / ETM Remote Sensing Images of each period as the main data source, which is generated by manual visual interpretation. Data are missing from some islands in the South China Sea. Spatial resolution: 30m, projection parameters: Albers_ Conic_ Equal_ Area central meridian 105, standard weft 1: 25, standard weft 2: 47. The remote sensing monitoring database of China's land use status is a relatively high precision land use monitoring data product in China, which has played an important role in the national land resources survey, hydrology and ecological research. The land use types include six first-class types of cultivated land, woodland, grassland, water area, residential land and unused land, and 25 second-class types.
Chinese Academy of Sciences Resource and Environmental Science Data Center(http://www.resdc.cn/)
The "Meteorological observation dataset of the standard meteorological station in the Irtysh River basin" contains the temperature and precipitation observation data at the monthly scale of the Habahe meteorological station, Jimunai meteorological station, Buerjin meteorological station, Fuhai meteorological station, Altay meteorological station and Fuyun meteorological station of the Irtysh river basin. The time scale of the data is month. The data set started in January 1961 (data of Fuyun station was missing from January to May 1961) and ended in December 2015. The special work of ground basic data re-examined the quality of historical informatization documents and revised the site documents with problems and differences. The data set does not revise the homogeneity of data, but segments the stations with obvious heterogeneity.
The data set records the proportion of male and female data of 1960-2017 countries along 65 countries along the belt and road. Data sources: (1) United Nations Population Division. World Population Prospects: 2017 Revision. (2) Census reports and other statistical publications from national statistical offices, (3) Eurostat: Demographic Statistics, (4) United Nations Statistical Division. Population and Vital Statistics Reprot (various years), (5) U.S. Census Bureau: International Database, and (6) Secretariat of the Pacific Community: Statistics and Demography Programme. The data set contains 4 tables：(1)Population, male;(2)Population, male (% of total);(3)Population, female;(4)Population, female (% of total).
Leaf area index (leaf area index), also known as leaf area coefficient, refers to the multiple of total plant leaf area in land area per unit land area, which is a better dynamic index to reflect the size of crop population. Leaf area index (LAI) is an important structural parameter of forest ecosystem. It represents the density of leaves and canopy structure characteristics, and affects the physiological and biochemical processes such as photosynthesis, respiration and transpiration in the canopy. It is a key parameter to describe the material and energy exchange between soil, vegetation and atmosphere, and is also an important variable for estimating various ecological processes and functions. Based on MODIS leaf area index data from 2000 to 2016, the mcd15a3h product data of Pan third pole key node area were trimmed, and the 4-day leaf area index data of key node area from 2002 to 2016 were obtained. Data projection: sinusoidal projection The data area is 34 key nodes of Pan third pole (Abbas, Astana, Colombo, Gwadar, Mengba, Teheran, Vientiane, etc.).
"Total population is based on the de facto definition of population, which counts all residents regardless of legal status or citizenship. The values shown are midyear estimates.This dataset includes demographic data of 22 countries from 1960 to 2018, including Sri Lanka, Bangladesh, Pakistan, India, Maldives, etc. Data fields include: country, year, population ratio, male ratio, female ratio, population density (km). Source: ( 1 ) United Nations Population Division. World Population Prospects: 2019 Revision. ( 2 ) Census reports and other statistical publications from national statistical offices, ( 3 ) Eurostat: Demographic Statistics, ( 4 ) United Nations Statistical Division. Population and Vital Statistics Reprot ( various years ), ( 5 ) U.S. Census Bureau: International Database, and ( 6 ) Secretariat of the Pacific Community: Statistics and Demography Programme. Periodicity: Annual Statistical Concept and Methodology: Population estimates are usually based on national population censuses. Estimates for the years before and after the census are interpolations or extrapolations based on demographic models. Errors and undercounting occur even in high-income countries. In developing countries errors may be substantial because of limits in the transport, communications, and other resources required to conduct and analyze a full census. The quality and reliability of official demographic data are also affected by public trust in the government, government commitment to full and accurate enumeration, confidentiality and protection against misuse of census data, and census agencies' independence from political influence. Moreover, comparability of population indicators is limited by differences in the concepts, definitions, collection procedures, and estimation methods used by national statistical agencies and other organizations that collect the data. The currentness of a census and the availability of complementary data from surveys or registration systems are objective ways to judge demographic data quality. Some European countries' registration systems offer complete information on population in the absence of a census. The United Nations Statistics Division monitors the completeness of vital registration systems. Some developing countries have made progress over the last 60 years, but others still have deficiencies in civil registration systems. International migration is the only other factor besides birth and death rates that directly determines a country's population growth. Estimating migration is difficult. At any time many people are located outside their home country as tourists, workers, or refugees or for other reasons. Standards for the duration and purpose of international moves that qualify as migration vary, and estimates require information on flows into and out of countries that is difficult to collect. Population projections, starting from a base year are projected forward using assumptions of mortality, fertility, and migration by age and sex through 2050, based on the UN Population Division's World Population Prospects database medium variant."
The data was obtained from the 30-second global elevation dataset developed by the US Geological Survey (USGS) and completed in 1996. Downloaded the data from the NCAR and UCAR Joint Data Download Center (https://rda.ucar.edu/datasets/ds758.0/) and redistributed it through this data center. GTOPO30 divides the world into 33 blocks. The sampling interval is 30 arc seconds, which is 0.00833333333333333 degrees. The coordinate reference is WGS84. The DEM is the distance from the sea level in the vertical direction, ie the altitude, in m, the altitude range from -407 to 8752, the ocean depth information is not included here, the negative value is the altitude of the continental shelf; the ocean is marked as -9999, the elevation above the coastline is at least 1; the island less than 1 square kilometer is not considered. In order to facilitate the user's convenience, on the basis of the block data, splice 10 blocks in -10S-90N and 20W-180E without any resampling processing. This data file is DEM_ptpe_Gtopo30.nc
United States Geological Survey (USGS) UitedStateGeologicalSurvey UitedStateGeologicalSurvey HE Yongli
The MODIS Land Cover data (MCD12Q1_v06) is processed according to the data from the Terra and Aqua observations in one year to describe the type of land cover. The land cover dataset contains 17 major land cover types, according to the International Geosphere Biosphere Programme (IGBP), which includes 11 natural vegetation types, 3 land development and mosaic land types, and 3 non-grass land type definition classes. . 1- Evergreen coniferous forest; 2- Evergreen broad-leaved forest; 3-deciduous coniferous forest; 4-deciduous broad-leaved forest; 5-mixed forest; 6-closed shrublands; 7-open shrublands; 8-woody savannas; 9-savannas; 10 - grasslands; 11- permanent wetlands; 12- croplands; 13 - urban and built-up lands; 14 - croplands/natural vegetation mosaics; 15- Permanent snow and ice; 16-barren; 17-water In order to facilitate the user's convenience, on the basis of the block data, we will splicing all the blocks in 0-90N and 0-180E without any resampling processing. The dataset has 500 m resolution with Sinusoidal projection. The data download address: https://ladsweb.modaps.eosdis.nasa.gov/search/order/1/MCD12Q1-6
The content of this data is the hydrogeological map of the Western Branch of the upper reaches of Heihe River, including stratum, river, fault, modern glacier and other information; the data is scanned and corrected by yeniu platform sheet comprehensive hydrogeological map, Qilian Mountain sheet comprehensive hydrogeological map, Qilian sheet comprehensive hydrogeological map and Sunan sheet geological map (1:200000), and the stratum is adjusted according to the field survey Together. This data can provide us with a better understanding of the lithology, structure, geomorphology, hydrogeological conditions of the Western Branch of the upper reaches of the Heihe River. It is convenient for researchers to have a clearer understanding and understanding of our work scope and research field, and facilitate retrieval and download.
The ground temperature, moisture and ice content at various depth (0 cm, 4 cm, 10 cm, 20 cm, 40 cm, 80 cm, 120 cm, 160 cm, 240 cm, 400 cm, 600 cm, 900 cm, 1200 cm, 1400 cm, 1500 cm) was generated through the SHAW model, which was evaluated by observations at AWS stations and WSN in the study area and could be used in research relevant on soil freezing and thawing.
This data set includes the normalized vegetation index, vegetation coverage, vegetation net primary productivity, grassland biomass, forest stock vegetation parameters of the Heihe River Basin from May 2019 to October 2019, and the spatial resolution is 10m. In this dataset, remote sensing data sources such as GF-1, GF-6, Sentinel-2, and ZY-3, combined with basic meteorological and ground monitoring data, are used to retrieve vegetation parameters such as band ratio method, mixed pixel decomposition model and CASA model to generate monthly vegetation index remote sensing products of Qilian Mountain in the growing season. This data set provides data support for the diagnosis of regional eco-environmental problems and the dynamic assessment of eco-environment by constructing a high spatial-temporal resolution eco-environmental monitoring data set based on high-resolution satellites.
QI Yuan, ZHANG Jinlong, CAO Yongpan, ZHOU Shengming, WANG Hongwei
This data set includes the normalized vegetation index, vegetation coverage, vegetation net primary productivity, grassland biomass, forest stock vegetation parameter remote sensing products in the key area of Qilian mountain from May 2019 to October 2019, and the spatial resolution is 10m. In this data set, remote sensing data sources such as GF-1, GF-6, Sentinel-2, and ZY-3, combined with basic meteorological and ground monitoring data, are used to retrieve vegetation parameters such as band ratio method, mixed pixel decomposition model and CASA model to generate monthly vegetation index remote sensing products of Qilian Mountain in the growing season. This data set provides data support for the diagnosis of regional eco-environmental problems and the dynamic assessment of eco-environment by constructing a high spatial-temporal resolution eco-environmental monitoring data set based on high-resolution satellites.
QI Yuan, ZHANG Jinlong, CAO Yongpan, ZHOU Shengming, WANG Hongwei
The forest hydrology experimental area of Heihe River integrated remote sensing experiment includes the dense observation area of Dayekou basin and the dense observation area of Pailugou basin. Due to the concentrated distribution of the fixed sample plots in the drainage ditch basin, these sample plots lack of representativeness to the forest of the whole dayokou basin, so in June 2008, 43 temporary forest sample plots were set up in the whole dayokou basin. The data set is the ground observation data of the 43 temporary plots. In addition to the measurement and recording of stand status and site factors, Lai was also observed. The instruments used to measure each wood in the sample plot are mainly tape, DBH, flower pole, tree measuring instrument and compass. The DBH, tree height, height under branch, crown width in cross slope direction, crown width along slope direction and single tree growth were measured for each tree. WGS84 latitude and longitude coordinates of the center point of the sample plot were measured with different hand-held GPS, and the positioning error was about 5-30m. Other observation factors include: Forest Farm, slope direction, slope position, slope, soil thickness, canopy density, etc. The implementation time of these temporary sample plots is from 2 to 30 June 2008. The data set can provide ground data for the development of remote sensing inversion algorithm of forest structure parameters.
LING Feilong HE Qisheng ZHANG Xuelong WANG Shunli ZHAO Ming LEI Jun NIU Yun LUO Longfa CHEN Erxue
The data set mainly includes observation data of each tree in the super site, and the observation time is from June 2, 2008 to June 10, 2008. The super site is set around the Dayekou Guantan Forest Station. Since the size of the super site is 100m×100m, in order to facilitate the forest structure parameter survey, the super site is divided into 16 sub-sample sites, and tally forest measurement is performed in units of sub-samples. The tally forest measurement factors include: diameter, tree height, height under branch, crown width in transversal slope direction, crown width in up and down slope direction, and tindividual tree growth status. The measuring instruments are mainly: tape, diameter scale, laser altimeter, ultrasonic altimeter, range pole and compass. The data set also records the center point latitude and longitude coordinates of 16 sub-samples (measured by Z-MAX DGPS). The data set can be used for verification of remote sensing forest structure parameter extraction algorithm. The data set, together with other observation data of the super site, can be used for reconstruction of forest 3D scenes, establishment of active and passive remote sensing mechanism models, and simulation of remote sensing images,etc.
CHEN Erxue Lina Bai Bengyu Wang Xin Tian LIU Qingwang CAO Bin Yang Yongtian Zhihai Gao Bingxiang Tan GUO Zhifeng WANG Xinyun FU Anmin ZHANG Zhiyu NI Wenjian WANG Qiang BAO Yunfei WANG Dianzhong ZHANG Yang ZHAO Liqiong LIANG Dashuang WANG Shunli ZHAO Ming LEI Jun NIU Yun LUO Longfa
There are two types of aerosol data in the Tibetan Plateau. Aerosol type data products are the results of aerosol type data fusion by using Meera 2 assimilation data and active satellite CALIPSO products through a series of data preprocessing, quality control, statistical analysis and comparative analysis. The key of the algorithm is to judge the CALIPSO aerosol type. According to CALIPSO aerosol types and quality control, and referring to merra 2 aerosol types, the final aerosol type data (12 kinds) and quality control results were obtained. Considering the vertical and spatial distribution of aerosols, it has high spatial resolution (0.625 ° × 0.5 °) and temporal resolution (month). Aerosol optical depth (AOD) is a visible band remote sensing inversion method developed by ourselves, combined with merra-2 model data and NASA's official product mod04. The data coverage time is from 2000 to 2019, with daily temporal resolution and spatial resolution of 0.1 degree. The retrieval method mainly uses the self-developed APRs algorithm to retrieve the aerosol optical depth over the ice and snow. The algorithm takes into account the BRDF characteristics of the ice and snow surface, and is suitable for the inversion of aerosol optical thickness on the ice and snow. The results show that the relative deviation of the data is less than 35%, which can effectively improve the coverage and accuracy of the polar AOD.
GUANG Jie ZHAO Chuanfeng