Data repository for "UAV hyperspectral imaging for multiscale assessment of Landsat 9 snow grain size and albedo", Frontiers in Remote Sensing, 2023.

Uploaded here the code and data repository for "UAV hyperspectral imaging for multiscale assessment of Landsat 9 snow grain size and albedo" published in Frontiers of Remote Sensing (2022/2023).

Description of the data and scripts that are located in the repository.

field_spectrometer 

This folder contains two matlab data files.

1) "ASD spectra" contains 34 ASD field spectrometer reflectance measurements that are resampled 

to the Resonon NIR-HSI wavelengths.

2) "ASD_gps_coordinates" contains UTM coordinates for for the 34 ASD field spectrometer meassurments from (1). 

Example: ASD_spec(:,1) is located at ASD_coords(1,:).

landsat_retrievals

This folder contains Landsat 9 grain size and albedo retrievals, and corresponding statistical runs as geotiffs.

nir_hsi_mosaics

(1)This folder contains the mosaiced reflectance datacube pre- and post-vicarious calibration.

(2) The grain size retrieval for the post-vicariously calibrated reflectance mosaic

(3) The raw radiance mosaic (used for georeference in the spatial comparison script)

matlab_code

albedo_landsat_visualization contains the proram that performs the spatial analysis between ASD, UAV-HSI, and Landsat. 

The UAV-HSI albedo calculation is also performed in this program. 

grain_size_retreival contains the grain size retrieval algroithms for ASD and NIR-HSI and the corresponding SNICAR 

lookup table for a 41deg zenith angle.

matlab functions folder should be in the path and are called in the codes provdied. 

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 

OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.