Sensors
The Earth Scan Lab captures
telemetry
from several earth-orbiting satellites. The sensor systems
on-board the various spacecraft offer views in many spectral bands, and
span spatial resolutions from 250m - 4km per data pixel.
Satellites can be classified as either polar orbiting
or geostationary
depending on their orbital behavior.
Many polar orbiting satellites are in a
sun-synchronous
orbit.
Oceansat-1 OCM
The Ocean Color Monitor (OCM) sensor is used to estimate chlorophyll a concentrations,
map suspended sediments, and monitor water quality.
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GOES-12 GVAR (Geostationary)
The GOES-12 (East) satellite sits over the equator at 75 degrees west
longitude. It provides high temporal resolution
imagery at a spatial resolution of 4km, and is especially useful for
atmospheric applications. The ESL has developed
GOES SST algorithms
combined with SSH
data to study Loop Currents in the Gulf of Mexico.
The GOES imagery also helps us to track and study
hurricanes, tropical storms, and high velocity currents in the Gulf of Mexico.
The ESL utilizes GOES-12 imagery to assist the State of Louisiana in
emergency response to tropical storms.
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Terra-1/Aqua-1 (MODIS)
Terra-1/Aqua-1 are part of the EOS (Earth Observing System) fleet of NASA
satellites. These spacecraft carry, among others, the MODIS sensor, which provides a
wealth of earth observational data at 250m to 1km resolutions.
MODIS (Moderate Resolution Imaging Spectroradiometer) has many applications, giving
spectacular true color
images of land and water, as well as SST, ocean color, and numerous atmospheric products.
The high resolution channels are used to quantify suspended sediment concentration
in coastal waters.
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Polar Operational Environmental Satellites (POES) AVHRR
The POES NOAA Series polar orbiters includes a constellation of several satellites. The ESL captures five of these (NOAA-12, 14, 15, 16, 17)
(Spacecraft Status)
providing approximately 20 passes per day, and a view of
the entire US and Gulf of Mexico.
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The AVHRR (Advanced High Resolution Radiometer) provides SST and reflectance imagery
used in
monitoring river and esturine processes
along the Louisiana coast.
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