SETI bioastro: Blue Marble 2000

From: Larry Klaes (
Date: Wed Apr 19 2000 - 06:37:33 PDT

Recalling the famous Apollo-era pictures of Earth taken by
lunar astronauts, this digital image is a spectacular portrait of
the Western Hemisphere at the time of one of the strongest
hurricanes ever observed in the Eastern Pacific.

This combination of science, engineering and artistry was
generated by researchers in the Laboratory for Atmospheres at NASA's
Goddard Space Flight Center, Greenbelt, MD, using data from three
different Earth-observing satellite instruments.

The prominent storm raging off the west coast of North America is
Hurricane Linda. Other obvious features include the shallow waters
of the Caribbean and sediments around the mouth of the Amazon River.

The underlying image of the full disk of Earth and its clouds was
taken by a GOES weather satellite. The ocean color data was collected
by NASA's Sea-viewing Wide Field-of-view Sensor (SeaWiFS) satellite.
The land color is portrayed by a vegetation index calculated using
data collected by NOAA's Polar Orbiting Environmental Satellites (POES).

These data are draped across a digital elevation model of Earth's
topography from the U.S. Geological Survey. The presence of the Moon
in this image is an artistic addition.


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