Sentinel-2 ACOLITE-DSF Aquatic Reflectance for the Conterminous United States

Aquatic reflectance produced with the dark spectrum fitting (DSF) algorithm as implemented in the Atmospheric Correction for OLI “lite” (ACOLITE) software (version 20221114.0). Aquatic reflectance is defined here as unitless water-leaving radiance reflectance and represents the ratio of water-leaving radiance (units of watts per square meter per steradian per nanometer) to downwelling irradiance (units of watts per square meter per nanometer) multiplied by pi.本数据集采用OLI精简版大气校正（Atmospheric Correction for OLI "lite", ACOLITE）软件（版本20221114.0）中实现的暗光谱拟合（dark spectrum fitting, DSF）算法计算得到水体反射率。本数据集所定义的水体反射率为无单位的离水辐射反射率（water-leaving radiance reflectance），即离水辐射（water-leaving radiance，单位：瓦每平方米每球面度每纳米）与下行辐照度（downwelling irradiance，单位：瓦每平方米每纳米）的比值乘以π。