The ground synchronous observation data include ASD spectrometer data, Lai, photosynthetic rate, FPAR, albedo, radiation temperature, coverage and CE318 solar spectrophotometer atmospheric parameters data. On June 1, 2008, the ground synchronous observation of airborne wide-angle infrared dual-mode line / area array scanner (widas) was carried out in Yingke oasis and huazhaizi desert intensive observation area. Widas is composed of four CCD cameras, a mid infrared thermal imager (AGEMA 550) and a thermal infrared thermal imager (S60). It can simultaneously obtain data of five angles in the visible / near infrared (CCD) band, seven angles in the mid infrared (MIR) band and seven angles in the thermal infrared (TIR) band.
Measurement content:
(1) Radiant temperatures obtained from thermal camera ThermaCAM SC2000 measurements. Measurements were made on corn, wheat, and bare soil in the cornfield of the PCG Oasis and on radiation temperatures in sample plot 1 of the Huazhazi Desert. The instrument acquired radiant temperature data with a field of view of 24° x 18° components and simultaneously took optical photographs of the same field of view. The height of the thermal camera shot was approximately 1.2 m.
This data includes raw data and records, instrument blackbody calibration data. Raw data can be utilized with the supporting processing software ThermaCAM Researcher 2001, or the data can be converted to other formats in this software and programmed to read by themselves. The instrument blackbody calibration data is stored in Excel format.
(2) Radiation temperature data measured by fixed self-recording point thermometer. The infrared radiation temperature data of the corn field in Yingke Oasis were measured continuously using the Fixed Self-Recording Point Thermometer No.1 of Remote Sensing Institute of Chinese Academy of Sciences. The field of view of the instrument was about 10°, vertical downward observation, and the sampling interval was higher than 1 s. The height of the setup is shown in the data file. The instrument was set to a specific emissivity of 1.0. This data consists of raw data and processed data corrected for blackbody calibration and specific emissivity. They are saved in Excel format.
(3) Photosynthetically Active Radiation Ratio (FPAR: Fraction of Photosynthetically Active Radiation) data, the measurement object for the corn and wheat in the Yingke Oasis Cornfield sample plot. The measuring instruments were SUNSCAN canopy analyzer and digital camera. Measurements were made in three sections, upper and lower, and both incident and reflected PAR were measured, the ratio of which is the ratio of photosynthetically active radiation (PAR). The data were saved in Excel.
(4) ASD spectrometer data. ASD (Analytical Sepctral Devices) spectrometer was used to measure the spectral data of Yingke Oasis corn field and Huazhazi Desert Sample Plot 1. The measurement instrument of Yingke Oasis Cornfield was the spectrometer of Peking University (350-2500nm), and the sampling mode was canopy vertical observation and strip observation; the measurement instrument of Huazhazi Desert Sample Plot 1 was the spectrometer of the Institute of Cold and Drought Research of the Chinese Academy of Sciences (350-2500nm), and the sampling mode was the Northeast -Southwest diagonal, with a sampling interval of 30 meters, and the raw data were exported after calibration and reflectance needed to be further calculated. The data include raw data and recorded data, processed reflectance data. The raw data is in ASD standard format, which can be opened with its own software ViewSpec. The processed reflectance data is saved in Excel format.
(5) Albedo data, measured for row sown corn within the PCG Oasis corn field. Measuring instrument contains a short-wave table of the upper table voltage value, the lower table voltage value, after the table's sensitivity coefficient is converted into albedo data. The relationship between the radius of the field of view R and the height of the probe H in the table below is: R = 10H. This data is stored in Excel.
(6) Radiant temperature data measured by a handheld infrared thermometer. The measurement object is the temperature data of the corn field and the wheat field of the PCG Oasis. The measuring instrument for the corn field was a hand-held radiometer from NNU, and the sampling methods were canopy vertical observation, strip observation, and diagonal observation. In particular, the corn field next to the resort used handheld infrared thermometers and needle thermometers to determine the radiant and physical temperatures of the corn in a 30-meter sample plot. The wheat plot used a handheld infrared thermometer from the Cold and Drought Research Institute to measure the strip temperature of the wheat canopy and bare soil between the rows. The sampling method in Huazhazi Desert Sample Plot 1 was canopy vertical observation and canopy northeast-southwest diagonal observation, and the vertical observation sample square was 30m wide. The data include raw data and recorded data, temperature data after blackbody calibration. The raw data of this data are in Word's doc format. The processed data are saved in Excel format.
(7) CE318 solar spectrophotometer atmospheric parameter data. Atmospheric parameters obtained from measurements using a solar spectrophotometer manufactured by CIMEL, France. Measurements were made on the roof of the activity room of the resort. The main types of cover of the underlayment: crops and forests, Height = 1526m, the specific coordinates of the location in the file.
CE318 solar spectrophotometer through direct solar radiation measurement data, can be inverse performance of non-water vapor channel optical thickness, Rayleigh scattering, aerosol optical thickness, water vapor channel 936nm measurement data can be obtained from the atmospheric air column of the water vapor content, the level of visibility can also be derived from the CE318 data. The CE318 from Beijing Normal University was used in this measurement, which can provide the optical thickness in five bands, 1020nm, 936nm, 870nm, 670nm and 440nm, and can be used to invert the water vapor content of the atmospheric column using the 936nm measurement data. This data includes raw data and processed atmospheric data. The raw data are stored in the CE318 specific file format *.k7, which can be opened by ASTPWin software and accompanied by the description file ReadMe.txt; the processed file includes the optical thickness, Rayleigh scattering, aerosol optical thickness, horizontal visibility, and near-surface atmospheric temperature obtained by using the inversion of the raw data, as well as the solar azimuth, zenith angle, sun-earth distance correction factor and the mass number of the atmospheric column. atmospheric column mass number. The data results are saved in Excel format.
(8) Specific radiance data. On that day, the W-type specific radiance observer was utilized to measure the bare soil and vegetation specific radiance data of Huazhazi Desert Sample Plot 1. Under the assumption that the environment was stable during the measurement time, the instrument was used to derive the specific radiance of the feature by changing the "hot and cold" radiation environment for four measurements. Therefore, to obtain the specific emissivity data for a feature, it is necessary to take the following measurements: Covered and gold plate; Uncovered and gold plate; Covered and no gold plate; Uncovered and no gold plate. The data type is stored in a tabular format in Word.
Widas is composed of 4 CCD cameras, 1 mid infrared thermal imager (AGEMA 550) and 1 thermal infrared thermal imager (S60). It can simultaneously obtain data of 5 angles of visible / near infrared (CCD) band, 7 angles of mid infrared band (MIR) and 7 angles of thermal infrared band (TIR).
(1) Radiant temperatures obtained from thermal camera ThermaCAM SC2000 measurements. Measurements were made on corn, wheat, and bare soil in the cornfield of the PCG Oasis and on radiation temperatures in sample plot 1 of the Huazhazi Desert. The instrument acquired radiant temperature data with a field of view of 24° x 18° components and simultaneously took optical photographs of the same field of view. The height of the thermal camera shot was approximately 1.2 m.
This data includes raw data and records, instrument blackbody calibration data. Raw data can be utilized with the supporting processing software ThermaCAM Researcher 2001, or the data can be converted to other formats in this software and programmed to read by themselves. The instrument blackbody calibration data is stored in Excel format.
(2) Radiation temperature data measured by fixed self-recording point thermometer. The infrared radiation temperature data of the corn field in Yingke Oasis were measured continuously using the Fixed Self-Recording Point Thermometer No.1 of Remote Sensing Institute of Chinese Academy of Sciences. The field of view of the instrument was about 10°, vertical downward observation, and the sampling interval was higher than 1 s. The height of the setup is shown in the data file. The instrument was set to a specific emissivity of 1.0. This data consists of raw data and processed data corrected for blackbody calibration and specific emissivity. They are saved in Excel format.
(3) Photosynthetically Active Radiation Ratio (FPAR: Fraction of Photosynthetically Active Radiation) data, the measurement object for the corn and wheat in the Yingke Oasis Cornfield sample plot. The measuring instruments were SUNSCAN canopy analyzer and digital camera. Measurements were made in three sections, upper and lower, and both incident and reflected PAR were measured, the ratio of which is the ratio of photosynthetically active radiation (PAR). The data were saved in Excel.
(4) ASD spectrometer data. ASD (Analytical Sepctral Devices) spectrometer was used to measure the spectral data of Yingke Oasis corn field and Huazhazi Desert Sample Plot 1. The measurement instrument of Yingke Oasis Cornfield was the spectrometer of Peking University (350-2500nm), and the sampling mode was canopy vertical observation and strip observation; the measurement instrument of Huazhazi Desert Sample Plot 1 was the spectrometer of the Institute of Cold and Drought Research of the Chinese Academy of Sciences (350-2500nm), and the sampling mode was the Northeast -Southwest diagonal, with a sampling interval of 30 meters, and the raw data were exported after calibration and reflectance needed to be further calculated. The data include raw data and recorded data, processed reflectance data. The raw data is in ASD standard format, which can be opened with its own software ViewSpec. The processed reflectance data is saved in Excel format.
(5) Albedo data, measured for row sown corn within the PCG Oasis corn field. Measuring instrument contains a short-wave table of the upper table voltage value, the lower table voltage value, after the table's sensitivity coefficient is converted into albedo data. The relationship between the radius of the field of view R and the height of the probe H in the table below is: R = 10H. This data is stored in Excel.
(6) Radiant temperature data measured by a handheld infrared thermometer. The measurement object is the temperature data of the corn field and the wheat field of the PCG Oasis. The measuring instrument for the corn field was a hand-held radiometer from NNU, and the sampling methods were canopy vertical observation, strip observation, and diagonal observation. In particular, the corn field next to the resort used handheld infrared thermometers and needle thermometers to determine the radiant and physical temperatures of the corn in a 30-meter sample plot. The wheat plot used a handheld infrared thermometer from the Cold and Drought Research Institute to measure the strip temperature of the wheat canopy and bare soil between the rows. The sampling method in Huazhazi Desert Sample Plot 1 was canopy vertical observation and canopy northeast-southwest diagonal observation, and the vertical observation sample square was 30m wide. The data include raw data and recorded data, temperature data after blackbody calibration. The raw data of this data are in Word's doc format. The processed data are saved in Excel format.
(7) CE318 solar spectrophotometer atmospheric parameter data. Atmospheric parameters obtained from measurements using a solar spectrophotometer manufactured by CIMEL, France. Measurements were made on the roof of the activity room of the resort. The main types of cover of the underlayment: crops and forests, Height = 1526m, the specific coordinates of the location in the file.
CE318 solar spectrophotometer through direct solar radiation measurement data, can be inverse performance of non-water vapor channel optical thickness, Rayleigh scattering, aerosol optical thickness, water vapor channel 936nm measurement data can be obtained from the atmospheric air column of the water vapor content, the level of visibility can also be derived from the CE318 data. The CE318 from Beijing Normal University was used in this measurement, which can provide the optical thickness in five bands, 1020nm, 936nm, 870nm, 670nm and 440nm, and can be used to invert the water vapor content of the atmospheric column using the 936nm measurement data. This data includes raw data and processed atmospheric data. The raw data are stored in the CE318 specific file format *.k7, which can be opened by ASTPWin software and accompanied by the description file ReadMe.txt; the processed file includes the optical thickness, Rayleigh scattering, aerosol optical thickness, horizontal visibility, and near-surface atmospheric temperature obtained by using the inversion of the raw data, as well as the solar azimuth, zenith angle, sun-earth distance correction factor and the mass number of the atmospheric column. atmospheric column mass number. The data results are saved in Excel format.
(8) Specific radiance data. On that day, the W-type specific radiance observer was utilized to measure the bare soil and vegetation specific radiance data of Huazhazi Desert Sample Plot 1. Under the assumption that the environment was stable during the measurement time, the instrument was used to derive the specific radiance of the feature by changing the "hot and cold" radiation environment for four measurements. Therefore, to obtain the specific emissivity data for a feature, it is necessary to take the following measurements: Covered and gold plate; Uncovered and gold plate; Covered and no gold plate; Uncovered and no gold plate. The data type is stored in a tabular format in Word.
Good data quality
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CC BY 4.0 (Creative Commons Attribution 4.0 International License).
CSTR:11738.11.ncdc.NIEER.2021.1738
10.12072/ncdc.NIEER.db1767.2022
