Spectrometer orthorectified surface directional reflectance - flightline

Surface reflectance (0-1 unitless, scaled by 10,000) computed from the NEON Imaging Spectrometer using ATCOR4r is orthorectified and output onto a fixed, uniform spatial grid using nearest-neighbor resampling. Fixed spatial grid is based on the native spatial resolution which is driven by the aircraft altitude; data are provided by flightline. Starting with data collected in 2022 onward, bidirectional reflectance data (with BRDF and topographic corrections applied) is also available under a new data product ID revision number (DP1.30006.002): "Spectrometer orthorectified surface bidirectional reflectance - flightline" data product. This L1 directional reflectance data product will continue to be delivered as well.