NOAA has four POES, Polar Operational Environmental Satellites,
currently in orbit. The satellites are named chronologically, based on
launch date. NOAA 15 was launched in 1998, NOAA 16 was launched in
2000, NOAA 17 was launched in 2002 and NOAA 18 was launched in 2005. In
May and August of 2007 two older satellites, NOAA 14 and NOAA 12
respectively, were decommissioned. These satellites orbit the Earth in
such a way that they pass over the poles. Each orbit takes
approximately 102.1 minutes, allowing the satellites to circle the Earth
about 14.1 times each day. The polar orbit enables the satellites to
collect daily global data for land, ocean, and atmospheric applications.
This data is used a large variety of environmental monitoring
applications such as weather analysis and forecasting, climate research
and prediction, global sea surface temperature measurements, ocean
dynamics research, global vegetation analysis and many other
applications.
Two of the satellites are classified as A.M. satellites and the other
two are classified as P.M. satellites, which indicate the time that they
cross the equator. These satellites provide full global coverage four
times daily. All of the satellites orbit the Earth at an altitude of
over 500 miles. The NOAA satellites are managed by NESDIS, the National
Environmental Satellite, Data and Information Service. This dataset shows the tracks of the NOAA POES satellites. NOAA 15 is yellow, NOAA 16 is red, NOAA 17
is green, NOAA 18 is blue and the International Space Station is also
included and is shaded pink.