MODIS

Modis

The Moderate-Resolution Imaging Spectroradiometer (MODIS) is an instrument on board two NASA satellites, Aqua and Terra. The MODIS instruments provide broad-scale imagery of cloud cover, ocean processes, land processes, and atmospheric profiles over the entire earth.

GINA has received MODIS data and processed images in real-time since August 2001. These images are automatically added to the Swathviewer and are available to GoogleEarth users as KML Feeds. Images are distributed for free use, but must be credited “University of Alaska, GINA, www.gina.alaska.edu.”

Image Details

MODIS acquires data in 36 bands distributed across the visible to thermal infrared regions of the electromagnetic spectrum with spatial resolutions, depending on band, of 250 m (820 ft), 500 m (1,640 ft) or 1 km (.62 mi) at nadir. The primary uses of the 36 bands are:

  • Land/cloud boundaries
  • Land/cloud properties
  • Ocean color/phytoplankton/biogeochemistry
  • Atmospheric water vapor
  • Surface/cloud temperature
  • Atmospheric temperature
  • Cirrus clouds/water vapor
  • Ozone
  • Surface/cloud temperature
  • Cloud top altitude

Receiving Station Details

The MODIS receiving station is located on the roof of the International Arctic Research Center (IARC) at the University of Alaska Fairbanks. An X-band Earth Observing System direct broadcast (EOS/DB) reception and processing system designed to receive and process data from the MODIS flying on NASA s Earth Observing System Terra and Aqua missions. The receiving station is a 3.6-meter TeraScan SX-EOS system designed by SeaSpace, Inc of Poway, California. This system has been in operation since August 2001.

Receiving Station Mask

For more visit NASA’s MODIS website.