Quotes to Note
"You may have heard me say this before, but I firmly believe there are few topics more fundamental to study than the workings of our planet. The earth sciences aim to unravel how the lithosphere, atmosphere, hydrosphere, and biosphere operate—and how they operate together. It is a science of synthesis. And it’s one that needs to move forward, both because of the great service the earth sciences perform for society and the understanding of world-shaping processes that they advance."
"We cannot do this project if the Landsat program doesn’t deliver this open data to the scientific community... We are benefiting from these long-term investments now."
"The long time span covered by the Landsat scenes allows us to determine long-term flow velocity trends. The high temporal resolution lets us analyze seasonal flow velocity variations of numerous outlet glaciers...The monitoring system provides a powerful tool to examine the flow velocity pattern throughout time and space, and we have detected an acceleration pattern for a number of outlet glaciers."
"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."