D.2.4_ProbeField_Field Measurements Examples Over 5 Case Studies_V1

This dataset comprises pre-processed field spectra, including 132 Bare Fiber and 29 SoilPRO® spectra collected from five distinct sites representing various applications. The SoilPRO® (SP) apparatus is specifically designed to measure the reflectance of undisturbed soil surfaces, with the portable spectrometers operating in the 350–2500 nm range, integrated into a fixed geometry setup with stable tungsten-halogen illumination. Due to the high stability of the SoilPRO® apparatus, each spectrum represents the average reflectance from three repetitions. Alongside spectral acquisition, several soil surface properties were measured, including hydrophobicity, measurement stability relative to the Contact Probe and Bare Fiber, and spatial variation across an extensive calibration area (1000 m²). The dataset also includes measurements of soil reflectance under low solar elevation conditions near the South Pole. Average spectra obtained with the SP apparatus for different bare soil surface covers and the comparison with spectra obtained with the Bare Fiber are also included.

本数据集包含经预处理的野外光谱数据，涵盖从5个不同站点采集的132条裸光纤（Bare Fiber）光谱与29条SoilPRO®光谱。SoilPRO®（简称SP）设备专为测量未受扰动的土壤表面反射率而设计，其搭载的便携式光谱仪工作波段覆盖350–2500 nm，集成于固定几何构型的测试装置中，并配备稳定的卤钨照明光源。得益于SoilPRO®设备的高稳定性，每条光谱均为三次重复测量的反射率平均值。在开展光谱采集的同时，本数据集还同步测定了多项土壤表面属性，包括疏水性、相较于接触式探头（Contact Probe）与裸光纤的测量稳定性，以及1000平方米大型校准区域内的空间变异特性。本数据集还包含南极附近低太阳高度角条件下的土壤反射率测量数据。此外，数据集还收录了使用SP设备针对不同裸土表面覆盖物获取的平均光谱，以及与裸光纤光谱的对比结果。