Source: USGS Landsat Mission Website
Jan. 3, 2013 • Landsat Surface Reflectance Climate Data Records (CDR) for Global Land Survey (GLS) collections 2000, 2005, and 2010 are now available from the Landsat CDR/ECV data set on EarthExplorer.
The Surface Reflectance CDR is one of a number of higher-level Landsat data products produced to support land surface change studies. More details about Surface Reflectance CDRs can be found on https://www.usgs.gov/landsat-missions/PLSRP.php.
STELLA: A DIY Handheld Scientific Instrument
If you are looking for a do-it-yourself (DIY) handheld spectrometer, you need to meet STELLA. STELLA (Science and Technology Education for Land/Life Assessment) is a portable scientific instrument developed by