Tower-based remote sensing data for understory vegetation at Delta Junction, Alaska 2019-2020

Data includes remote sensing products from PhotoSpec (a scanning spectrometer) from August 2019-December 2020. We provide daily averaged vegetation indices for a mix of understory lichen and moss species in a black spruce dominated forest. We compute near-infrared vegetation index (NIRv), normalized difference vegetation index (NDVI), photochemical reflectance index (PRI), and chlorophyll-carotenoid index (CCI) averaged for three understory targets at NEON Delta Junction. We also provide daily averaged photosynthetically active radiation (PAR) and solar zenith angle (SZA). Finally, we provide the average diurnal profiles of all the aforementioned metrics for 4 20-day windows in winter, spring, summer, and fall.本数据集涵盖2019年8月至2020年12月期间由PhotoSpec（扫描光谱仪）获取的遥感产品。我们为以黑云杉为优势种的森林中混合生长的林下地衣与苔藓物种提供日平均植被指数。针对NEON德尔塔章克申站点的3个林下样地，我们计算了近红外植被指数（near-infrared vegetation index, NIRv）、归一化差分植被指数（normalized difference vegetation index, NDVI）、光化学反射指数（photochemical reflectance index, PRI）以及叶绿素-类胡萝卜素指数（chlorophyll-carotenoid index, CCI）的平均值。此外，本数据集还提供日平均光合有效辐射（photosynthetically active radiation, PAR）与太阳天顶角（solar zenith angle, SZA）。最后，我们提供了冬、春、夏、秋四个20天时段内所有上述指标的平均日变化廓线。