Quotes to Note
"Our new interface specifically uses Landsat to track flow velocity fields of Greenland’s outlet glaciers and how they have changed over time."
"This portal harnesses more than 37,000 images from Landsat archives, dating back to the early 1970s, to track changes in outlet glaciers over time."
“What we’re able to do now is track the flow of the world’s ice from pole to pole and on every continent.”
"Thanks to its detailed spatial resolution, Landsat made the estimation of small reservoirs’ surface area possible."
"The Landsat archives were the foundation of our study. Landsat unlocks the previous three decades’ of global river changes by recording these 'natural experiments.' We were able to quantify the degree of accelerated migration and channel widening caused by 13 cutoff events, estimate the amount of sediment released into the channel due to the cutoffs, and infer the physical processes driving river response to cutoffs."
"Landsat has undoubtedly transformed our ability to understand urbanization processes and how cities expand and evolve... the multi-spectrality of Landsat, its relatively high spatial resolution, its revisit period, and especially the long observational record that made millions of scenes publicly available, make Landsat a key asset for the research community."
"This project would have been entirely impossible without the free and open-access data policy of the NASA/USGS Landsat-data archive."
"Landsat data is assimilated into our estimation system and therefore provides the key constraint on our snowpack estimates. Without Landsat data this analysis would have to be done in a modeling context or using limited in situ data and therefore would have significantly higher uncertainties."
"Landsat is the only satellite data archive that allows the quantification of vegetation and flooding dynamics relationships across such a large area. Key features unique to the Landsat archive that are paramount for our work include the archive’s temporal depth and detail provided by over a quarter century of systematically acquired time series of imagery at management-relevant spatial resolution."
"We believe this type of continuous mapping of forest metrics at expansive scales would not have been possible without the excellent radiometric characteristics of Landsat 8, particularly the high level of quantization and the outstanding signal-to-noise ratio, which enables fine distinctions that were not previously possible."
"Landsat is an invaluable resource for developing these high resolution maps. Without the Landsat imagery we would not have the spectral information needed to decompose urban landscapes into Local Climate Zone types. Hence the data is at the heart of the project and it is the most critical piece—without Landsat there is no project."
"Landsat provides a global view of the the worlds alpine glaciers and enables us to track their retreat in ways that would be difficult without this important environmental time series."