Multi-scale surface flux and meteorological observation datasets in the Haihe River Basin

Brief Introduction: In order to quantitatively reveal the surface water-heat flux exchange characteristics of the main underlying surface of the Haihe River Basin, and also provide the pixel-scale “ground truth value” for the verification of surface evapotranspiration by remote sensing, since 2006, the forest land in the northern mountainous areas of the Haihe River Basin has been successively Beijing Miyun) has established a multi-scale surface flux and meteorological observation network with farmland (Hebei Huailai), central suburban farmland (Beijing Daxing), and southern plain farmland (Hebei Guantao), covering the main underlying surface of the Haihe River Basin.

Number of Datasets: 33

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-large aperture scintillometer, 2016)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-large aperture scintillometer, 2016)

    The data set contains the observation data of large aperture scintillator from January 1, 2016 to December 31, 2016. Two large aperture scintillation meters, bls450 and zzlas, are installed respectively. The site is located in donghuayuan Town, Huailai County, Hebei Province. The longitude and latitude of the observation point are 115.7880e, 40.3491n and 480m above sea level. The effective height of the large aperture scintillator is 14m, the optical path length is 1870m, the longitude and latitude of the transmitter are 115.8023e, 40.3596n, and the longitude and latitude of the receiver are 115.7825e and 40.3522n. The acquisition frequency of bls450 and zzlas is 5Hz and 1Hz respectively, with an average output of 1min. The original data of large aperture scintillator is 1 min, and the released data is 30 min average data after processing and quality control. The sensible heat flux is mainly obtained by iterative calculation based on Monin obkhov similarity theory and combined with automatic weather station data. In the process of iterative calculation, for bls450, the stability function of thiermann and Grassl, 1992 is selected; for zzlas, the stability function of Andreas, 1988 is selected. The main quality control steps include: (1) eliminating the data of cn2 saturation; (2) eliminating the data with weak demodulation signal intensity; (3) eliminating the data of precipitation time and one hour before and after; (4) eliminating the data of weak turbulence under stable conditions (U * less than 0.1m/s). Several explanations about the published data are as follows: (1) the Las data is mainly bls450, and the missing time is supplemented by zzlas observation, and the missing time is marked with - 6999. (2) Data header: date / time: date / time, cn2: structure parameter of air refraction index (m-2 / 3), H_ Las: sensible heat flux (w / m2). The meaning of data time, for example, 0:30 represents the average of 0:00-0:30; the data is stored in *. XLS format. Guo et al., 2020; Liu et al., 2013

    2020-10-27 2037 18 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Haihe River Basin (Huailai station-large aperture scintillometer, 2017)

    Multi-scale surface flux and meteorological elements observation dataset in the Haihe River Basin (Huailai station-large aperture scintillometer, 2017)

    This data set contains the observation data of large aperture scintillator on January 7, 2017 at solstice on December 31, 2017. Two large aperture scintillator models BLS450 and zzlas were installed respectively.The site is located in huailai county, hebei province, east garden town, the underlying surface for corn.The latitude and longitude of the observation point is 115.7880E, 40.3491N, and the altitude is 480m.The effective height of the large aperture scintillation instrument is 14m, the optical diameter length is 1870m, the longitude and latitude of the transmitting end is 115.8023e, 40.3596n, and the longitude and latitude of the receiving end is 115.7825e, 40.3522n.The acquisition frequencies of BLS450 and zzlas were 5Hz and 1Hz respectively, with an average output of 1min. The original data of the large aperture scintillator is 1min, and the released data is the average data of 30min after processing and quality control. Among them, the sensible heat flux is mainly obtained by combining with the data of the automatic meteorological station and by iterative calculation based on the moning-obkhoff similarity theory.In the iterative calculation process, for BLS450, the stability function of Thiermann and Grassl, 1992 was selected.For zzlas, I'm going to pick Andreas 1988's stability function.The main quality control steps include :(1) eliminating the data of Cn2 reaching saturation;(2) eliminate data with weak demodulation signal strength;(3) data of the time of precipitation and the hour before and after the precipitation are excluded;(4) data of weak turbulence under stable conditions were excluded (u* < 0.1m/s). Several notes on the released data :(1) LAS data is mainly BLS450, the missing time is supplemented by zzlas observation, and the missing time of both is marked by -6999.(2) data table: Date/Time: Date/Time, Cn2: air refractive index structure parameter (m-2/3), H_LAS: sensible heat flux (W/m2).The meaning of data time, such as 0:30 represents the average between 0:00 and 0:30;The data is stored in *.xls format. Guo et al, 2020 is used for site introduction and Liu et al, 2013 for data processing

    2020-10-27 1513 48 View Details

  • Spatial layout of characteristic agriculture in Qinghai Tibet Plateau

    Spatial layout of characteristic agriculture in Qinghai Tibet Plateau

    The data includes the county-level data of characteristic agriculture distribution in the Qinghai Tibet Plateau, which lays the foundation for the spatial distribution and development of characteristic agriculture in the Qinghai Tibet Plateau. The data are from the development plan of Tibet Plateau characteristic agricultural products base (2015-2020), Qinghai province's 13th five year plan, Sichuan Province's 13th five year plan for agricultural and rural economic development, Xinjiang Uygur Autonomous Region's 13th five year plan for targeted poverty alleviation of agricultural characteristic industries (2016-2020), Yunnan Province's overall plan for plateau characteristic agricultural modernization( 2016-2020), implementation opinions on fostering and strengthening characteristic agricultural industries in Gansu Province to boost poverty alleviation, China National Geographic Indication product network (http://www.cgi.gov.cn/home/default/), regional layout planning of characteristic agricultural products (2013-2020). The data is the distribution of county-level characteristic agriculture, realizing the spatialization of county-level characteristic agriculture. The data can be applied to the research on the spatial distribution of characteristic agriculture and the development of characteristic agriculture in the future.

    2020-01-09 5411 34 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Haihe River Basin (Huailai station-lysimeters, 2015)

    Multi-scale surface flux and meteorological elements observation dataset in the Haihe River Basin (Huailai station-lysimeters, 2015)

    The data set contains the observation data of the evapotranspiration apparatus on January 1, 2015, solstice, December 31, 2015.The site is located in huailai county, hebei province, east garden town, the underlying surface for corn.The latitude and longitude of the observation point is 115.7880E, 40.3491N, and the altitude is 480m. The acquisition frequency of the evapotranspiration permeameter is 1Hz, and the released data is 10min output data.The evapotranspiration meter is a cylindrical structure with a surface area of 1m2 and a buried depth of 1.5m. The observation accuracy of evapotranspiration is 0.01mm.Two evapotranspiration seeptometers were installed, one kept bare soil (lysimeter_1), the other for the corn underlay (lysimeter_2) during the growing season (May 10 - September 15).Soil temperature and humidity probe, soil water potential probe and soil heat flow plate are also installed in the evapotranspiration apparatus.The buried depth of the soil temperature sensor is 5cm, 30cm, 50cm, 100cm and 140cm.The buried depth of the soil water sensor is 2cm, 10cm, 20cm and 40cm.The soil heat flux plate is buried 10cm underground;The buried depth of the soil water potential sensor was 30cm and 140cm.Processing and quality control of observation data :(1) ensure 144 data per day (every 10min). If data is missing, it will be marked by -6999;Due to instruments and weather, the data was abnormal from December 6th to 31st.(2) delete the data of observation anomalies caused during maintenance;(3) data that is obviously beyond the physical meaning or the range of the instrument is deleted;(4) the format of date and time is unified, and the date and time are in the same column.For example, the time is: 10:30 on June 10, 2015. The observation data released by the evapotranspiration permeameter include:Date/Time, weighing mass (i.l._1_wag_l_000 (Kg), i.l._2_wag_l_000 (Kg)), seepage mass (i.l._1_wag_d_000 (Kg), i.l._2_wag_d_000 (Kg)), soil heat flux (Gs_1_10cm, Gs_2_10cm) (W/m2),Multi-layer soil moisture (Ms_1_5cm, Ms_1_10cm, Ms_1_30cm, Ms_1_50cm, Ms_1_50cm, Ms_1_100cm, Ms_2_5cm, Ms_2_10cm, Ms_2_30cm, Ms_2_50cm, Ms_2_100cm) (%),Multi-layer soil temperature (Ts_1_5cm, Ts_1_30cm, Ts_1_50cm, Ts_1_100cm, Ts_1_140cm, Ts_2_140cm, ts_2_2_5cm, ts_2_2_50cm, Ts_2_100cm, Ts_2_140cm) (℃), soil water potential (TS_1_30 (hPa), TS_1_140 (hPa), TS_2_30 (hPa), TS_2_30 (hPa), TS_2_140 (hPa), TS_2_140 (hPa));The data is stored in *.xls format. Please refer to Liu et al. (2013) for information of observation test or site, and Yang guangchao et al. (2015) for data processing.

    2020-03-09 3496 9 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Haihe River Basin (Huailai station-eddy covariance system-10m tower, 2015)

    Multi-scale surface flux and meteorological elements observation dataset in the Haihe River Basin (Huailai station-eddy covariance system-10m tower, 2015)

    The data set contains the observation data of the vorticity correlator of 10m tower on December 31, 2015 from January 1, 2015 to solstice.Station is located in huailai county, hebei province, east garden town, under the surface of irrigated corn.The latitude and longitude of the observation point is 115.7880E, 40.3491N, and the altitude is 480m.The acquisition frequency of vortex correlativity instrument is 10Hz, the frame height is 5m, the ultrasonic direction is due to the north, and the distance between the ultrasonic anometer (CSAT3) and the CO2/H2O analyzer (Li7500A) is 15cm. The released data is the 30-minute data obtained from the post-processing of the original collected 10Hz data with Eddypro software. The main steps of the processing include: outfield value elimination, delay time correction, coordinate rotation (secondary coordinate rotation), frequency response correction, ultrasonic virtual temperature correction and density (WPL) correction.Quality assessment for each intercompared to at the same time, mainly is the atmospheric stability (Δ st) and turbulent characteristics of similarity (ITC) test.The 30min pass value output after processing was also screened :(1) the data when the instrument was wrong was removed;(2) data of 1h before and after precipitation were excluded;(3) the missing rate of 10Hz original data is more than 10% every 30min;(4) the observed data of weak turbulence at night were excluded (u* less than 0.1m/s).The average period of observation data was 30 minutes, 48 data a day, and the missing data was marked as -6999.May 14 solstice May 20 and May 24 solstice June 6 due to power converter damage, data missing. The observation data released by vortex correlator include:Date/Time for the Date/Time, wind Wdir (°), Wnd horizontal wind speed (m/s), standard deviation Std_Uy lateral wind speed (m/s), ultrasonic virtual temperature Tv (K), the water vapor density H2O (g/m3), carbon dioxide concentration CO2 (mg/m3), friction velocity Ustar) (m/s), the length of cloth hoff, sensible heat flux Hs (W/m2), latent heat flux LE (W/m2), carbon dioxide flux Fc (mg/(m2s)), the quality of the sensible heat flux identifier QA_Hs, the quality of the latent heat flux identifier QA_LE.The quality of the sensible heat and latent heat, carbon dioxide flux identification is divided into three (quality id 0: (Δ st < 30, the ITC < 30);1: (Δ st < 100, ITC < 100);The rest are 2).The meaning of data time, such as 0:30 represents the average between 0:00 and 0:30;The data is stored in *.xls format. Please refer to Guo et al, 2020 for information of observation test or site, and Liu et al. (2013) for data processing.

    2020-10-28 3902 20 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Guantao site-automatic weather station) (2008-2010)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Guantao site-automatic weather station) (2008-2010)

    The data set contains observations from the automatic weather station as of 31 December 2010 as of 1 solstice January 2008.The site is located in hezhai village, guantao county, hebei province.The latitude and longitude of the observation point is 115.1274E, 36.5150N, and the altitude is 30m. The acquisition frequency of the automatic weather station is 10s, and the output of 10min is once.The observation factors include air temperature and relative humidity (12.5m), and the direction is due north.Wind speed (12.7m), wind direction (12.7m), heading due north;Air pressure (installed in waterproof box);Rainfall (16m);Net radiation/four-component radiation (15.6m), facing due south;Infrared surface temperature (15.7m), the arm is facing south, the probe is facing vertically downward;The soil temperature and humidity probe was buried 2m south of the meteorological tower. The buried depth of the soil temperature probe was 0cm, 2cm, 5cm, 10cm, 20cm, 40cm, 60cm, 80cm and 100cm. The buried depth of the soil moisture sensor was 2cm, 5cm, 10cm, 10cm, 10cm, 10cm, 20cm, 60cm, 80cm and 100cm.Two soil hot plates (2) were buried 2cm underground, one under the vegetation and the other between the trees.Processing and quality control of observation data :(1) ensure 144 data per day (every 10min). If data is missing, it will be marked by -6999;(2) eliminate the moments with duplicate records;(3) data that is obviously beyond the physical meaning or the range of the instrument is deleted;(4) the format of date and time is unified, and the date and time are in the same column.For example, the time is: June 10, 2010 at 10:30. Data released by the automatic weather station include:Date/Time, air temperature and humidity observation (ta_12.5m, rh_12.5m) (℃, %), wind speed (ws_12.7m) (m/s), wind direction (wd_12.7m) (°), pressure (Press) (hpa), precipitation (Rain) (mm), four-component radiation (DR, UR, DLR_Cor, ULR_Cor, Rn) (W/m2), surface radiation temperature (IRT_1, IRT_2) (℃),Soil heat flux (Gs_1, Gs_2) (W/m2), multi-layer soil moisture (Ms_2cm, Ms_5cm, Ms_10cm, Ms_20cm, Ms_40cm, Ms_60cm, Ms_100cm) (%) and multi-layer soil temperature (Ts_0cm, Ts_2cm, Ts_5cm, Ts_10cm, Ts_20cm, Ts_40cm, Ts_60cm, Ts_80cm, Ts_100cm) (℃). Please refer to Jia et al,(2012) for information of observation test or site, and Liu et al,(2013) for data processing.

    2020-03-09 7631 25 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-eddy covariance system-40m tower, 2016)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-eddy covariance system-40m tower, 2016)

    The data set contains the observation data of 40m tower vortex correlator on January 1, 2016, solstice, 2016, December 31, 2016.The station is located in east garden town, huailai county, hebei province.The latitude and longitude of the observation point is 115.7923E, 40.3574N, and the altitude is 480m.The acquisition frequency of vortex correlativity instrument is 10Hz, the frame height is 3.5m, the ultrasonic direction is due to the north, and the distance between the ultrasonic anemometer (CSAT3) and the CO2/H2O analyzer (EC150) is 0cm. The released data is the 30-minute data obtained from the post-processing of the original collected 10Hz data with Eddypro software. The main steps of the processing include: outfield value elimination, delay time correction, coordinate rotation (secondary coordinate rotation), frequency response correction, ultrasonic virtual temperature correction and density (WPL) correction.Quality assessment for each intercompared to at the same time, mainly is the atmospheric stability (Δ st) and turbulent characteristics of similarity (ITC) test.The 30min pass value output after processing was also screened :(1) the data when the instrument was wrong was removed;(2) data of 1h before and after precipitation were excluded;(3) the missing rate of 10Hz original data is more than 10% every 30min;(4) the observed data of weak turbulence at night were excluded (u* less than 0.1m/s).The average period of observation data was 30 minutes, 48 data a day, and the missing data was marked as -6999.There are many negative values of water vapor density measured by EC150 in winter, filled with -6999. The observation data released by vortex correlator include:Date/Time for the Date/Time, wind Wdir (°), Wnd horizontal wind speed (m/s), standard deviation Std_Uy lateral wind speed (m/s), ultrasonic virtual temperature Tv (K), the water vapor density H2O (g/m3), carbon dioxide concentration CO2 (mg/m3), friction velocity Ustar) (m/s), the length of cloth hoff, sensible heat flux Hs (W/m2), latent heat flux LE (W/m2), carbon dioxide flux Fc (mg/(m2s)), the quality of the sensible heat flux identifier QA_Hs, the quality of the latent heat flux identifier QA_LE.The quality of the sensible heat and latent heat, carbon dioxide flux identification is divided into three (quality id 0: (Δ st < 30, the ITC < 30);1: (Δ st < 100, ITC < 100);The rest are 2).The meaning of data time, such as 0:30 represents the average between 0:00 and 0:30;The data is stored in *.xls format.The data was missing during the period from May 26 to May 29 due to instrument calibration. Guo et al, 2020 is used for site introduction and Liu et al, 2013 for data processing

    2020-10-27 1585 27 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Miyun site-eddy covariance system) (2008-2010)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Miyun site-eddy covariance system) (2008-2010)

    The data set contains vortex related flux observation data on January 1, 2008, solstice, December 29, 2010.The site is located in xinchengzi town, miyun county, Beijing, with orchards (plums and apple trees), corn/bare land, and towns.The latitude and longitude of the observation point is 117.3233E, 40.6308N, and the altitude is 350m. The acquisition frequency of the eddy correlativity instrument is 10Hz, the frame height is 26.66m, the ultrasonic direction is due to the north, and the distance between the ultrasonic anemometer and the CO2/H2O analyzer is 25cm.The published data is the 30-minute data obtained by the post-processing of the original collected 10Hz data with Edire software. The main steps of the processing include: outfield value elimination, delay time correction, coordinate rotation (plane fitting), frequency response correction, ultrasonic virtual temperature correction and density (WPL) correction.Quality assessment for each intercompared to at the same time, mainly is the atmospheric stability (Δ st) and turbulent characteristics of similarity (ITC) test.The 30min pass value output by Edire software was also screened :(1) the data when the instrument was wrong was removed;(2) data of 1h before and after precipitation were excluded;(3) the missing rate of 10Hz original data is more than 3% every 30min;(4) the observed data of weak turbulence at night were excluded (u* less than 0.1m/s).The average period of observation data was 30 minutes, 48 data a day, and the missing data was marked as -6999. The observation data released by vortex correlator include:Date/Time for the Date/Time, wind Wdir (°), Wnd horizontal wind speed (m/s), standard deviation Std_Uy lateral wind speed (m/s), ultrasonic virtual temperature Tv (℃), the water vapor density H2O (g/m3), carbon dioxide concentration CO2 (mg/m3), friction velocity Ustar) (m/s), the length of cloth hoff, sensible heat flux Hs (W/m2), latent heat flux LE (W/m2), carbon dioxide flux Fc (mg/(m2s)), the quality of the sensible heat flux identifier QA_Hs, the quality of the latent heat flux identifier QA_LE,Carbon dioxide flux mass identification QA_Fc.The quality of the sensible heat and latent heat, carbon dioxide flux identification is divided into nine grades (quality logo 1: (0 < Δ st < 15, 0 < ITC < 30);2: (16 < < 30, 0 < ITC Δ st < 30);3: (0 < Δ st < 30, 31 < ITC < 75);4: (31 < < 75, 0 < ITC Δ st < 30);5: (0 < Δ st < 75, 31 < ITC < 100);6 (76 < < 100, ITC Δ st < 100);7: (Δ st < 250, ITC < 250);8: (Δ st < 1000, ITC < 1000);The rest are 9).The meaning of data time, such as 0:30 represents the average between 0:00 and 0:30;The data is stored in *.xls format. Please refer to Jia et al.(2012) for information of observation test or site, and Liu et al.(2013) for data processing.

    2020-03-08 6257 33 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-automatic weather station-10m tower, 2016)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-automatic weather station-10m tower, 2016)

    The data set contains the observation data of 10m tower self-moving meteorological station on January 1, 2016, solstice, December 31, 2016.The station is located in east garden town, huailai county, hebei province.The latitude and longitude of the observation point is 115.7880E, 40.3491N, and the altitude is 480m. The automatic weather station is installed on a 10m tower, the acquisition frequency is 30s, and the output time is 10min.The observation factors include air temperature and relative humidity (5m), and the direction is due north.The wind speed (10m), the wind direction (10m), the direction is due to the north;Air pressure (installed in waterproof box);Rainfall (10m);The four-component radiation (5m), the direction is due to the south;The infrared surface temperature (5m), the arm is facing south, and the probe is facing vertically downward.The soil temperature and humidity probe was buried at 1.5m to the south of the meteorological tower. The buried depth of the soil temperature probe was 0cm, 2cm, 4cm, 10cm, 20cm, 40cm, 80cm, 120cm and 160cm. The buried depth of the soil moisture sensor was 2cm, 4cm, 10cm, 10cm, 10cm, 10cm, 20cm, 80cm, 120cm and 160cm.The average soil temperature was buried 2,4 cm underground.Soil hot flow plates (3) are buried in the ground 6cm. Processing and quality control of observation data :(1) ensure 144 data per day (every 10min). If data is missing, it will be marked by -6999;(2) eliminate the moments with duplicate records;(3) data that is obviously beyond the physical meaning or the range of the instrument is deleted;(4) the format of date and time is unified, and the date and time are in the same column.For example, the time is: 2016-6-10-10:30.During January 1, solstice, April 15, there was a problem with the soil temperature sensor with a depth of 40cm, and the data was missing. Guo et al, 2020 is used for site introduction and Liu et al, 2013 for data processing

    2020-10-27 1385 47 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin: Huailai station-lysimeters (2016)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin: Huailai station-lysimeters (2016)

    The data set contains the observation data of the evapotranspiration apparatus on January 1, 2016, solstice, December 31, 2016.The site is located in huailai county, hebei province, east garden town, the underlying surface for corn.The latitude and longitude of the observation point is 115.7880E, 40.3491N, and the altitude is 480m. The collection frequency of the evapotranspiration permeameter is 1 time/min, and the released data is 10min output data.The evapotranspiration meter is a cylindrical structure with a surface area of 1m2 and a buried depth of 1.5m. The observation accuracy of evapotranspiration is 0.01mm.Two evapotranspiration seeptometers were installed, one kept bare soil (lysimeter_1), the other for the corn underlay (lysimeter_2) during the growing season (May 10 - September 15).Soil temperature and humidity probe, soil water potential probe and soil heat flow plate are also installed in the evapotranspiration apparatus.The buried depth of the soil temperature sensor is 5cm, 30cm, 50cm, 100cm and 140cm.The buried depth of the soil water sensor is 2cm, 10cm, 20cm and 40cm.The soil heat flux plate is buried 10cm underground;The buried depth of the soil water potential sensor was 30cm and 140cm.Processing and quality control of observation data :(1) ensure 144 data per day (every 10min). If data is missing, it will be marked by -6999;(2) delete the data of observation anomalies caused during maintenance;(3) data that is obviously beyond the physical meaning or the range of the instrument is deleted;(4) the format of date and time is unified, and the date and time are in the same column.For example, the time is: 2016-6-10-10:30. The observation data released by the evapotranspiration permeameter include:Date/Time, weighing mass (i.l._1_wag_l_000 (Kg), i.l._2_wag_l_000 (Kg)), seepage mass (i.l._1_wag_d_000 (Kg), i.l._2_wag_d_000 (Kg)), soil heat flux (Gs_1_10cm, Gs_2_10cm) (W/m2),Multi-layer soil moisture (Ms_1_5cm, Ms_1_10cm, Ms_1_30cm, Ms_1_50cm, Ms_1_50cm, Ms_1_100cm, Ms_2_5cm, Ms_2_10cm, Ms_2_30cm, Ms_2_50cm, Ms_2_100cm) (%),Multi-layer soil temperature (Ts_1_5cm, Ts_1_30cm, Ts_1_50cm, Ts_1_100cm, Ts_1_140cm, Ts_2_140cm, ts_2_2_5cm, ts_2_2_50cm, Ts_2_100cm, Ts_2_140cm) (℃), soil water potential (TS_1_30 (hPa), TS_1_140 (hPa), TS_2_30 (hPa), TS_2_30 (hPa), TS_2_140 (hPa), TS_2_140 (hPa));The data is stored in *.xls format.

    2020-03-09 1367 12 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-eddy covariance system-40m tower, 2017)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-eddy covariance system-40m tower, 2017)

    The data set contains the observation data of 40m tower vortex correlator on January 1, 2017, solstice, 2017, December 31, 2017.The station is located in east garden town, huailai county, hebei province.The latitude and longitude of the observation point is 115.7923E, 40.3574N, and the altitude is 480m.The acquisition frequency of vortex correlativity instrument is 10Hz, the frame height is 3.5m, the ultrasonic direction is due to the north, and the distance between the ultrasonic anemometer (CSAT3) and the CO2/H2O analyzer (EC150) is 0cm. The released data is the 30-minute data obtained from the post-processing of the original collected 10Hz data with Eddypro software. The main steps of the processing include: outfield value elimination, delay time correction, coordinate rotation (secondary coordinate rotation), frequency response correction, ultrasonic virtual temperature correction and density (WPL) correction.Quality assessment for each intercompared to at the same time, mainly is the atmospheric stability (Δ st) and turbulent characteristics of similarity (ITC) test.The 30min pass value output after processing was also screened :(1) the data when the instrument was wrong was removed;(2) data of 1h before and after precipitation were excluded;(3) the missing rate of 10Hz original data is more than 10% every 30min;(4) the observed data of weak turbulence at night were excluded (u* less than 0.1m/s).The average period of observation data was 30 minutes, 48 data a day, and the missing data was marked as -6999.There are many negative values of water vapor density measured by EC150 in winter, filled with -6999. The observation data released by vortex correlator include:Date/Time for the Date/Time, wind Wdir (°), Wnd horizontal wind speed (m/s), standard deviation Std_Uy lateral wind speed (m/s), ultrasonic virtual temperature Tv (K), the water vapor density H2O (g/m3), carbon dioxide concentration CO2 (mg/m3), friction velocity Ustar) (m/s), the length of cloth hoff, sensible heat flux Hs (W/m2), latent heat flux LE (W/m2), carbon dioxide flux Fc (mg/(m2s)), the quality of the sensible heat flux identifier QA_Hs, the quality of the latent heat flux identifier QA_LE.The quality of the sensible heat and latent heat, carbon dioxide flux identification is divided into three (quality id 0: (Δ st < 30, the ITC < 30);1: (Δ st < 100, ITC < 100);The rest are 2).The meaning of data time, such as 0:30 represents the average between 0:00 and 0:30;The data is stored in *.xls format.The data was missing during the period from May 26 to May 29 due to instrument calibration. Guo et al, 2020 is used for site introduction and Liu et al, 2013 for data processing.

    2020-10-27 2884 27 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Daxing site - eddy covariance system) (2008-2010)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Daxing site - eddy covariance system) (2008-2010)

    The dataset contains vortex correlator observation data from January 1, 2008, solstice, December 31, 2010.The station is located in weishanzhuang, daxing district, Beijing.The latitude and longitude of the observation point are 116.4271E, 39.6213N and 20m above sea level. The acquisition frequency of the eddy correlates instrument is 10Hz, the frame height is 3m, the ultrasonic direction is 295 ° (due north direction is 0 °), and the distance between the ultrasonic anemometer and the CO2/H2O analyzer is 18cm.The published data is the 30-minute data obtained by the post-processing of the original collected 10Hz data with Edire software. The main steps of the processing include: outfield value elimination, delay time correction, coordinate rotation (plane fitting), frequency response correction, ultrasonic virtual temperature correction and density (WPL) correction.Quality assessment for each intercompared to at the same time, mainly is the atmospheric stability (Δ st) and turbulent characteristics of similarity (ITC) test.The 30min pass value output by Edire software was also screened :(1) the data when the instrument was wrong was removed;(2) data of 1h before and after precipitation were excluded;(3) the missing rate of 10Hz original data is more than 3% every 30min;(4) the observed data of weak turbulence at night were excluded (u* less than 0.1m/s).The average period of observation data was 30 minutes, 48 data a day, and the missing data was marked as -6999. The observation data released by vortex correlator include:Date/Time for the Date/Time, wind Wdir (°), Wnd horizontal wind speed (m/s), standard deviation Std_Uy lateral wind speed (m/s), ultrasonic virtual temperature Tv (℃), the water vapor density H2O (g/m3), carbon dioxide concentration CO2 (mg/m3), friction velocity Ustar) (m/s), the length of cloth hoff, sensible heat flux Hs (W/m2), latent heat flux LE (W/m2), carbon dioxide flux Fc (mg/(m2s)), the quality of the sensible heat flux identifier QA_Hs, the quality of the latent heat flux identifier QA_LE,Carbon dioxide flux mass identification QA_Fc.The quality of the sensible heat and latent heat, carbon dioxide flux identification is divided into nine grades (quality logo 1: (0 < Δ st < 15, 0 < ITC < 30);2: (16 < < 30, 0 < ITC Δ st < 30);3: (0 < Δ st < 30, 31 < ITC < 75);4: (31 < < 75, 0 < ITC Δ st < 30);5: (0 < Δ st < 75, 31 < ITC < 100);6 (76 < < 100, ITC Δ st < 100);7: (Δ st < 250, ITC < 250);8: (Δ st < 1000, ITC < 1000);The rest are 9).The meaning of data time, such as 0:30 represents the average between 0:00 and 0:30;The data is stored in *.xls format. Please refer to Jia et al,(2012) for information of observation test or site, and Liu et al,(2013) for data processing.

    2020-03-09 6505 44 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-lysimeters, 2017)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-lysimeters, 2017)

    The data set contains the observation data of the evapotranspiration apparatus on January 1, 2017 (solstice) and December 31, 2017.The site is located in huailai county, hebei province, east garden town, the underlying surface for corn.The latitude and longitude of the observation point is 115.7880E, 40.3491N, and the altitude is 480m. The collection frequency of the evapotranspiration permeameter is 1 time/min, and the released data is 10min output data.The evapotranspiration meter is a cylindrical structure with a surface area of 1m2 and a buried depth of 1.5m. The observation accuracy of evapotranspiration is 0.01mm.Two evapotranspiration seeptometers were installed, one kept bare soil (lysimeter_1), the other for the corn underlay (lysimeter_2) during the growing season (May 10 - September 15).Soil temperature and humidity probe, soil water potential probe and soil heat flow plate are also installed in the evapotranspiration apparatus.The buried depth of the soil temperature sensor is 5cm, 30cm, 50cm, 100cm and 140cm.The buried depth of the soil water sensor is 2cm, 10cm, 20cm and 40cm.The soil heat flux plate is buried 10cm underground;The buried depth of the soil water potential sensor was 30cm and 140cm.Processing and quality control of observation data :(1) ensure 144 data per day (every 10min). If data is missing, it will be marked by -6999;(2) delete the data of observation anomalies caused during maintenance;(3) data that is obviously beyond the physical meaning or the range of the instrument is deleted;(4) the format of date and time is unified, and the date and time are in the same column.For example, the time is: 2016-6-10-10:30. The observation data released by the evapotranspiration permeameter include:Date/Time, weighing mass (i.l._1_wag_l_000 (Kg), i.l._2_wag_l_000 (Kg)), seepage mass (i.l._1_wag_d_000 (Kg), i.l._2_wag_d_000 (Kg)), soil heat flux (Gs_1_10cm, Gs_2_10cm) (W/m2),Multi-layer soil moisture (Ms_1_5cm, Ms_1_10cm, Ms_1_30cm, Ms_1_50cm, Ms_1_50cm, Ms_1_100cm, Ms_2_5cm, Ms_2_10cm, Ms_2_30cm, Ms_2_50cm, Ms_2_100cm) (%),Multi-layer soil temperature (Ts_1_5cm, Ts_1_30cm, Ts_1_50cm, Ts_1_100cm, Ts_1_140cm, Ts_2_140cm, ts_2_2_5cm, ts_2_2_50cm, Ts_2_100cm, Ts_2_140cm) (℃), soil water potential (TS_1_30 (hPa), TS_1_140 (hPa), TS_2_30 (hPa), TS_2_30 (hPa), TS_2_140 (hPa), TS_2_140 (hPa));The data is stored in *.xls format.

    2020-03-09 1570 16 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-large aperture scintillometer, 2013)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-large aperture scintillometer, 2013)

    This dataset contains the observation data of large aperture scintillator on January 1, 2013 (solstice) and December 31, 2013. Two large aperture scintillator models BLS450 and zzlas were installed respectively.The site is located in huailai county, hebei province, east garden town, under the surface of corn.The latitude and longitude of the observation point is 115.7880E, 40.3491N, and the altitude is 480m.The effective height of the large aperture scintillation instrument is 14m, the optical diameter length is 1870m, the longitude and latitude of the transmitting end is 115.8023e, 40.3596n, and the longitude and latitude of the receiving end is 115.7825e, 40.3522n.The acquisition frequencies of BLS450 and zzlas were 5Hz and 1Hz respectively, with an average output of 1min. Large aperture flicker meter raw data for 1 min, data released for 30 min after processing and quality control of the average data, including sensible heat flux is mainly combined with the automatic meteorological station data, based on similarity theory alonzo mourning - Mr. Hoff is obtained by iterative calculation, in the process of iterative calculation, for BLS450, select Thiermann and Grassl, the stability of the 1992 universal functions;For zzlas, select Andreas 1988's stability universal function.The main quality control steps include :(1) eliminating the data of Cn2 reaching saturation;(2) eliminate data with weak demodulation signal strength;(3) data of the time of precipitation and the hour before and after the precipitation are excluded;(4) data of weak turbulence under stable conditions were excluded (u* < 0.1m/s). Several notes on the released data :(1) LAS data is mainly BLS450, the missing time is supplemented by zzlas observation, and the missing time of both is marked by -6999.(2) data table: Date/Time: Date/Time, Cn2: air refractive index structure parameter (m-2/3), H_LAS: sensible heat flux (W/m2).The meaning of data time, such as 0:30 represents the average between 0:00 and 0:30;The data is stored in *.xls format Guo et al, 2020 is used for site introduction and Liu et al, 2013 for data processing

    2020-10-27 6589 24 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Daxing site-automatic weather station) (2008-2010)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Daxing site-automatic weather station) (2008-2010)

    The data set contains observations from the automatic weather station as of 31 December 2010 as of 1 solstice January 2008.The station is located in weishanzhuang, daxing district, Beijing.The latitude and longitude of the observation point are 116.4271E, 39.6213N and 20m above sea level. The acquisition frequency of the automatic weather station is 10s, and the output of 10min is once.The observation factors include air temperature and relative humidity (10m), and the direction is due to the north.Wind speed (27m), wind direction (27m), heading due north;Air pressure (installed in waterproof box);Rainfall (30m);Four - component radiation (28m), the direction is due to the south;Infrared surface temperature (28m), the arm is facing south, the probe is facing vertically downward;The soil temperature and humidity probe was buried 2m south of the meteorological tower. The buried depth of the soil temperature probe was 2cm, 5cm, 10cm, 20cm, 40cm, 60cm, 80cm and 100cm. The buried depth of the soil water sensor was 2cm, 5cm, 10cm, 20cm, 40cm, 40cm, 60cm and 100cm.Two soil hot plates (2) were buried 2cm underground, one under the vegetation and the other between the trees.Processing and quality control of observation data :(1) ensure 144 data per day (every 10min). If data is missing, it will be marked by -6999;(2) eliminate the moments with duplicate records;(3) data that is obviously beyond the physical meaning or the range of the instrument is deleted;(4) the format of date and time is unified, and the date and time are in the same column.For example, the time is: June 10, 2010 at 10:30. Data released by the automatic weather station include:Date/Time, air temperature and humidity observation (Ta_10m, RH_10m) (℃, %), wind speed (Ws_27m) (m/s), wind direction (WD_27m) (°), pressure (Press) (hpa), precipitation (Rain) (mm), four-component radiation (DR, UR, DLR_Cor, ULR_Cor, Rn) (W/m2), surface radiation temperature (IRT_1, IRT_2) (℃),Soil heat flux (Gs_1, Gs_2) (W/m2), multi-layer soil moisture (Ms_2cm, Ms_5cm, Ms_10cm, Ms_20cm, Ms_40cm, Ms_60cm, Ms_100cm) (%) and multi-layer soil temperature (Ts_2cm, Ts_5cm, Ts_10cm, Ts_20cm, Ts_40cm, Ts_60cm, Ts_80cm, Ts_100cm) (℃). Please refer to Jia et al,(2012) for information of observation test or site, and Liu et al,(2013) for data processing.

    2020-03-09 6491 27 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-eddy covariance system-10m tower, 2016)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-eddy covariance system-10m tower, 2016)

    The data set contains the observation data of 10m tower vortex correlator on January 1, 2016, solstice, 2016, December 31, 2016.The station is located in east garden town, huailai county, hebei province.The latitude and longitude of the observation point is 115.7880E, 40.3491N, and the altitude is 480m.The acquisition frequency of vortex correlativity instrument is 10Hz, the frame height is 5m, the ultrasonic direction is due to the north, and the distance between the ultrasonic anometer (CSAT3) and the CO2/H2O analyzer (Li7500A) is 15cm. The released data is the 30-minute data obtained from the post-processing of the original collected 10Hz data with Eddypro software. The main steps of the processing include: outfield value elimination, delay time correction, coordinate rotation (secondary coordinate rotation), frequency response correction, ultrasonic virtual temperature correction and density (WPL) correction.Quality assessment for each intercompared to at the same time, mainly is the atmospheric stability (Δ st) and turbulent characteristics of similarity (ITC) test.The 30min pass value output after processing was also screened :(1) the data when the instrument was wrong was removed;(2) data of 1h before and after precipitation were excluded;(3) the missing rate of 10Hz original data is more than 10% every 30min;(4) the observed data of weak turbulence at night were excluded (u* less than 0.1m/s).The average period of observation data was 30 minutes, 48 data a day, and the missing data was marked as -6999.On May 27, BBB 0, July 22, there was a problem with the ultrasonic anemometer, and the data was missing. The observation data released by vortex correlator include:Date/Time for the Date/Time, wind Wdir (°), Wnd horizontal wind speed (m/s), standard deviation Std_Uy lateral wind speed (m/s), ultrasonic virtual temperature Tv (K), the water vapor density H2O (g/m3), carbon dioxide concentration CO2 (mg/m3), friction velocity Ustar) (m/s), the length of cloth hoff, sensible heat flux Hs (W/m2), latent heat flux LE (W/m2), carbon dioxide flux Fc (mg/(m2s)), the quality of the sensible heat flux identifier QA_Hs, the quality of the latent heat flux identifier QA_LE.The quality of the sensible heat and latent heat, carbon dioxide flux identification is divided into three (quality id 0: (Δ st < 30, the ITC < 30);1: (Δ st < 100, ITC < 100);The rest are 2).The meaning of data time, such as 0:30 represents the average between 0:00 and 0:30;The data is stored in *.xls format. Guo et al, 2020 is used for site introduction and Liu et al, 2013 for data processing。

    2020-10-27 1360 66 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-eddy covariance system-10m tower, 2013)
  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-automatic weather station-40m tower, 2016)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-automatic weather station-40m tower, 2016)

    The data set contains the observation data of 40 m tower automatic weather station from January 1, 2016 to December 31, 2016. The site is located in donghuayuan Town, Huailai County, Hebei Province. The longitude and latitude of the observation point are 115.7923e, 40.3574n and 480m above sea level. The automatic weather station is installed on a 40m tower with the acquisition frequency of 30s and output once every 10min. The observation elements include air temperature and relative humidity (3m, 5m, 10m, 15m, 20m, 30m, 40m) in the 7th floor, wind speed (3m, 5m, 10m, 15m, 20m, 30m, 40m) of the 7th floor, wind direction (10m), facing due north; air pressure (installed in waterproof box); rainfall (3m); four component radiation and photosynthetically active radiation (4m), facing due south; infrared surface temperature (8m) The soil temperature and humidity probe is buried 1.5m to the south of the meteorological tower, the soil temperature and humidity probe is buried at 2cm, 4cm, 10cm, 20cm, 40cm, 80cm, 120cm and 160cm, and the soil moisture sensor is 2cm, 4cm, 10cm, 20cm, 40cm, 80cm, 120cm and 160cm; the average soil temperature is buried in the underground 2, 4cm; soil heat flow The slabs (3 pieces) are buried 6 cm underground. Processing and quality control of observation data: (1) ensure 144 data per day (every 10 min), if there is data missing, it will be marked by - 6999; (2) eliminate the time with repeated records; (3) delete the data obviously beyond the physical meaning or instrument range; (4) the format of date and time is unified, and the date and time are in the same column. For example, the time is: 2016-6-10 10:30. The data released by automatic weather station include: date / time, date / time, air temperature (TA)_ 3m, Ta_ 5m, Ta_ 10m, Ta_ 15m, Ta_ 20m, Ta_ 30m, Ta_ 40m) (℃), relative humidity (RH)_ 3m, RH_ 5m, RH_ 10m, RH_ 15m, RH_ 20m, RH_ 30m, RH_ 40m) (%), wind speed (WS_ 3m, Ws_ 5m, Ws_ 10m, Ws_ 15m, Ws_ 20m, Ws_ 30m, Ws_ 40 m (M / s), wind direction (WD) (°), air pressure (HPA), precipitation (mm), four component radiation (DR, ur, DLR, ULR, RN) (w / m2), par (umol / S / m2), surface radiation temperature (IRT)_ 1、IRT_ 2) (℃), soil heat flux (GS)_ 1、Gs_ 2、Gs_ 3) (w / m2), multi-layer soil moisture (MS_ 2cm、Ms_ 4cm、Ms_ 10cm、Ms_ 20cm、Ms_ 40cm、Ms_ 80cm、Ms_ 120cm、Ms_ 160 cm) (%), multilayer soil temperature (TS_ 2cm、Ts_ 4cm、Ts_ 10cm、Ts_ 20cm、Ts_ 40cm、Ts_ 80cm、Ts_ 120cm、Ts_ 160 cm (℃), average soil temperature tcav (℃). Guo et al, 2020 is used for site introduction and Liu et al, 2013 for data processing

    2020-10-27 1682 25 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-large aperture scintillometer, 2015)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Huailai station-large aperture scintillometer, 2015)

    The data set contains the observation data of large aperture scintillator from January 1, 2015 to December 31, 2015. Two large aperture scintillation meters, bls450 and zzlas, are installed respectively. The site is located in donghuayuan Town, Huailai County, Hebei Province. The longitude and latitude of the observation point are 115.7880e, 40.3491n and 480m above sea level. The effective height of the large aperture scintillator is 14m, the optical path length is 1870m, the longitude and latitude of the transmitter are 115.8023e, 40.3596n, and the longitude and latitude of the receiver are 115.7825e and 40.3522n. The acquisition frequency of bls450 and zzlas is 5Hz and 1Hz respectively, with an average output of 1min. The original data of large aperture scintillator is 1 min, and the released data is 30 min average data after processing and quality control. The sensible heat flux is mainly obtained by iterative calculation based on Monin obkhov similarity theory and combined with automatic weather station data. In the process of iterative calculation, for bls450, the stability function of thiermann and Grassl, 1992 is selected; for zzlas, the stability function of Andreas, 1988 is selected. The main quality control steps include: (1) eliminating the data of cn2 saturation; (2) eliminating the data with weak demodulation signal intensity; (3) eliminating the data of precipitation time and one hour before and after; (4) eliminating the data of weak turbulence under stable conditions (U * less than 0.1m/s). Several explanations about the published data are as follows: (1) the Las data is mainly bls450, and the missing time is supplemented by zzlas observation, and the missing time is marked with - 6999. (2) Data header: date / time: date / time, cn2: structure parameter of air refraction index (m-2 / 3), H_ Las: sensible heat flux (w / m2). The meaning of data time, for example, 0:30 represents the average of 0:00-0:30; the data is stored in *. XLS format. Guo et al, 2020 is used for site introduction and Liu et al, 2013 for data processing

    2020-10-27 2970 8 View Details

  • Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Daxing site-large aperture scintillometer) (2008-2010)

    Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Daxing site-large aperture scintillometer) (2008-2010)

    The dataset contains large aperture scintillator flux observation data from January 1, 2008, solstice, December 31, 2010.The station is located in weishanzhuang, daxing district, Beijing.The latitude and longitude of the observation point are 116.4271E, 39.6213N and 20m above sea level. The acquisition frequency of the large aperture scintillation instrument is 1Hz, the effective height is 29.6m, the optical diameter length is 2480m, the longitude and latitude of the transmitting end is 116.4271E, 39.6213N, and the longitude and latitude of the receiving end is 116.4369E, 39.6422N.The data released by the large aperture scintillator is the average data of 30min after processing and quality control, in which the sensible heat flux is mainly obtained by combining with the data of automatic meteorological station and by iterative calculation based on the moning-obhoff similarity theory.(2) eliminate data with weak demodulation signal strength;(3) data of the time of precipitation and the hour before and after the precipitation are excluded;(4) data of weak turbulence under stable conditions were excluded (u* < 0.1m/s). Data released by the large aperture scintillator include: Date/Time Date/Time, air refractive index structure parameter Cn2 (m-2/3), sensible heat flux H_LAS (W/m2) Please refer to Jia et al,(2012) for information of observation test or site, and Liu et al,(2013) for data processing.

    2020-03-09 5687 10 View Details