WATER: Dataset of ground truth measurements synchronizing with Envisat ASAR in the Linze grassland foci experimental area on Jul. 11, 2008

The dataset of ground truth measurements synchronizing with Envisat ASAR was obtained in the Linze grassland foci experimental area on Jul. 11, 2008. The data were in AP mode and VV/VH polarization combinations, and the overpass time was approximately at 11:26 BJT. Observations were carried out in the reed plot A, the saline plots B and C, the alfalfa plot D and the barley plot E, which were divided into 6×6 subsites, with each one spanning a 120×120 m2 plot. Soil gravimetric moisture, volumetric moisture, and soil bulk density after drying by using the cutting ring, the mean soil temperature from 0-5cm by the probe thermometer, and the canopy temperature and the land surface temperature by the hand-held infrared thermometer were measured in A, B and C; the soil temperature, soil moisture, the loss tangent, soil conductivity, the real part and the imaginary part of soil complex permittivity by the POGO soil sensor, the mean soil temperature from 0-5cm by the probe thermometer, the canopy temperature and the land surface temperature by the hand-held infrared thermometer in D and E. Data were archived in Excel file. See WATER: Dataset of setting of the sampling plots and stripes in the foci experimental area of Linze station for more information.

本数据集收集了与Envisat ASAR同步的地面真实测量数据，该数据于2008年7月11日在临泽草地焦点实验区获得。数据采集模式为AP模式，并采用VV/VH极化组合，过境时间约为北京时间11:26。观测点包括芦苇地A区、盐碱地B和C区、紫花苜蓿地D区和麦地E区，这些区域被划分为6×6的亚区，每个亚区覆盖面积为120×120平方米。在A、B和C区，通过切割环测量土壤重力水含量、体积水含量和土壤体积密度，使用探针温度计测量0-5厘米深度的平均土壤温度，以及手持红外温度计测量冠层温度和地表温度；在D和E区，通过POGO土壤传感器测量土壤温度、土壤水分、损耗角正切、土壤电导率以及土壤复介电常数的实部和虚部，同样使用探针温度计测量0-5厘米深度的平均土壤温度，手持红外温度计测量冠层温度和地表温度。数据以Excel文件格式存档。欲了解更多关于临泽站焦点实验区采样点及条带设置的信息，请参阅WATER数据集。