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File:Global Vegetation map - GPN-2003-00029.jpg

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Description
English: This image is comprised of data from the Advanced Very High Resolution Radiometer (AVHRR) aboard the National Oceanic and Atmospheric Administration's (NOAA) Polar Orbiting Environmental Satellite (POES) series to map global vegetation cover. The vegetation covering the continents was recorded by the AVHRR aboard NOAA-7, NOAA-8, and NOAA-11. Dense vegetation is represented by shades of purple and green; sparse vegetation by shades of brown. The vegetation "index," an indicator of vegetation cover, is calculated by comparing reflected infrared light to reflected visible light for a specific area of land. NOAA's two operational polar orbiting satellites scan the entire earth once every six hours from altitudes of about 850km (529 miles). The data collected by the AVHRR sensor are held in the archives of the United States Geological Survey's EROS Data Center. The objective of the AVHRR instrument was to provide radiance data for investigation of clouds, land-water boundaries, snow and ice extent, ice or snow melt inception, day and night cloud distribution, temperatures of radiating surfaces, and sea surface temperature.
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Source Great Images in NASA Description
Author NASA
Permission
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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
Warnings:
This image or video was catalogued by NASA Headquarters of the United States National Aeronautics and Space Administration (NASA) under Photo ID: GPN-2003-00029 and Alternate ID: Global-Biosphere.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.
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current17:16, 9 April 20093,000 × 2,400 (6.92 MB)BotMultichillT{{Information |Description={{en|1=This image is comprised of data from the Advanced Very High Resolution Radiometer (AVHRR) aboard the National Oceanic and Atmospheric Administration's (NOAA) Polar Orbiting Environmental Satellite (POES) series to map glo

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