2021年全球生态系统动态调查系统的坡度自适应波形指数产品(GEDI-SAWA)
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数据集是全球生态系统动态调查系统(GEDI)的坡度自适应波形指数产品,简称为GEDI-SAWA,旨在降低地形坡度对25 m GEDI大光斑激光波形评估森林垂直结构和地上碳储量的影响。数据集时间跨度为2021/01/01~2021/12/31,共计18567个GEDI-SAWA文件,并依据文件对应的数据获取日期(以天为单位)进行组织。GEDI-SAWA文件采用hdf5格式存储,总存储量为12.8 TB。GEDI-SAWA文件中RHT字段记录了24个不同能量百分位数下的SAWA指数,分别对应5,10,15,……,85,90,95,96,97,98,99和100能量百分位下的SAWA指数。RHT字段采用整形存储,对应单位厘米(cm),转换为米(m)需要乘以转换系数0.01。
This dataset is the Slope-Adaptive Waveform Index product of the Global Ecosystem Dynamics Investigation (GEDI), abbreviated as GEDI-SAWA, which aims to mitigate the impact of topographic slope on the assessment of forest vertical structure and aboveground carbon stocks using 25 m GEDI large-footprint laser waveforms. The dataset spans from 2021/01/01 to 2021/12/31, containing a total of 18,567 GEDI-SAWA files organized by their data acquisition dates (in days). GEDI-SAWA files are stored in HDF5 format, with a total storage capacity of 12.8 TB. The RHT field in GEDI-SAWA files records SAWA indices under 24 different energy percentiles, corresponding to the SAWA indices at 5, 10, 15, …, 85, 90, 95, 96, 97, 98, 99, and 100 energy percentiles respectively. The RHT field is stored as integers, with the unit of centimeters (cm). To convert the values to meters (m), a conversion factor of 0.01 must be multiplied.




