“Landsat, now one of the largest and most powerful tranches of Earth-science data, is an invaluable scientific resource.”

“Landsat is currently the only satellite program to provide a consistent, cross-calibrated set of records stretching back over more than four decades, which in turn means the program occupies a key position in the provision of terrestrial essential climate variables.”

“Landsat is proof-positive of the value of Earth observation data, and particularly open access to Earth observation data.”

“The Landsat satellite series has proven to be a perfect match to the needs of modern irrigated agriculture and water resources management.”

“In many cases the Landsat archive has provided the only consistent source of information to monitor changes in the surface of the Earth.”

“Thanks to its detailed spatial resolution, Landsat made the estimation of small reservoirs’ surface area possible.”

“You can see the changes of your orchard over time & over space, and by measuring the canopy temperature [with Landsat] you can see whether the canopy is in balance with the rest of the environment around the trees.”

“We hope to accelerate innovation in climate research, humanitarian relief, and disaster preparedness efforts around the world by making Landsat data readily available near our flexible computing resources.”

“New sensors are nice, but can’t let us see back in time. Happy 17th!”

“Landsat’s work is epic in scale. In 43 years, it has amassed over a petabyte of data, with over 4 million scenes and counting.”

“Landsat is the crown jewel of Earth Observation datasets—unique 40+ year archive.”

“With applied conservation programs, we’re using that [Landsat] imagery to say here are the areas that we can prioritize for conservation management, and here are areas that maybe we can let go. It’s a very powerful tool for getting conservation to happen.”

“We have mapped then analyzed the area of forest converted each year to industrial oil palm and pulpwood plantations from 2001 to 2016, looking mainly at land under company management – that is, concessions. We use LANDSAT satellite imagery to monitor the annual expansion of plantations. We combine this information with annual maps of forest loss also derived using LANDSAT satellites by Matthew Hansen’s research group at the University of Maryland. The Hansen dataset, as we call it, produce…

“We need to drive towards building sustainable cities and human settlements, and this depends on how well we measure these areas and how well we can predict the growth in all these cities in the future. I believe Earth observation and geospatial technologies give us the tools needed in order for us to grow in this direction.”

“[With Landsat 8 and 9 together,] we get really great-quality data every eight days. That’s going to be a boon, especially for water quality applications.”

“You can acquire data until the cows come home. But if the data isn’t available, you can only go so far. If people can’t rely on data availability and continuity, they won’t build a system to use it. And then the whole puzzle falls apart.”

“Those are the Islands of the Four Mountains… The Landsat image shows them on June 8, 2013… One of the things I love about science is how it gives us perspective.”

“The water resources communities all through the United States, especially in the irrigated areas, are very appreciative that NASA put the thermal imager on Landsat 8 and that future Landsats are guaranteed to include a thermal imager.”

“Our Landsat-based insect atlas facilitates comparisons across space, time, and insect agents that have not been possible to date.”

“If you don’t do the calibration right, you can’t do anything else.”

“Landsat has been extremely beneficial as it allowed us to frequently evaluate the movement of the shoreline based on data gleaned from one consistent source over the duration of the study period. Further, the continued use of Landsat will allow for ongoing monitoring of the coastline in this region to ensure that potential infrastructural improvements are sustainable based on projections of near-term climate change.”

“Science and reliable data need to be at the heart of policy decisions around the globe if we are to tackle climate change and other serious environmental challenges facing our world. It is vital that we share the trusted data that comes from Earth observation so citizens, scientists, and political leaders everywhere can most effectively work together to meet these most difficult challenges.”

Landsat 9 bw
Landsat 9 bw
Landsat 9 bw

The NASA/USGS Landsat Program provides the longest continuous space-based record of Earth’s land in existence. Landsat data give us information essential for making informed decisions about Earth’s resources and environment.