Comment Re: Simple: Vindictive against climate research (Score 4, Informative) 140
Ground truthing (touchy term depending on if you are the ground based or spaced based nerd) is essential in getting a verification on the ground of what the bird sees. Once you have that calibration, the sat data is very reliable. And you cannot be on the ground everywhere, so the sat has greater range. This is an evolution of what the LANDSAT birds have been doing for decades. Source: have been working on earth resource monitoring education / citizen science for 30 years.