Landsat 8 has been on the job for a year now — since May 30, 2013,
when NASA transferred ownership and operation of the satellite to the
U.S. Geological Survey.
About 100 days before that, NASA launched Landsat 8 from Vandenberg
Air Force Base in California on February 11. It is the latest in the
Landsat series of remote-sensing satellites that have provided a
continuous record of change across Earth’s land surfaces since 1972.
Scientists, land management professionals, and space enthusiasts
already know that Landsat 8 is stocked with a 10-year supply of fuel,
that it carries two highly sensitive observation instruments operating
more precisely than before, and that the USGS now operates Landsat 8
along with older sister Landsat 7. With two Landsat satellites on
orbit, the USGS can provide data every eight days for any spot on the
Earth’s land masses, supporting water managers, agricultural commodities
markets, and scientists around the globe.
To mark an extremely successful first year of space operation for
Landsat 8, the scientists and imagery experts at the USGS Earth
Resources Observation and Science (EROS) Center have selected 10 sets of
images that demonstrate the broad range of changes on the land that
Landsat 8 has observed in its first year and compiled them in a special
collection — the Landsat 8 Yearbook.
See the Landsat 8 Yearbook here.
It features “before” and “after” sets of images that you can
manipulate with a digital slider bar to see change over time. Some of
the images also show the enhanced technical capabilities of the Landsat 8
spacecraft.
The interval of time between the “before” and “after” (i.e.
“present”) images allows us to see and study critical changes that have
occurred and continue to occur on the land. This extended timeframe is
made possible by the 42-year Landsat archive of continuous and
comparable Earth imagery.
Since 2008, all Landsat data are freely available to anyone on Earth.
SOURCE USGS
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