As such, EOS is the fundamental source of satellite data of the Earth and its environment. The overall goal of the EOS mission is to advance the scientific understanding of the entire Earth system and its changes on a global scale through the development of a deeper understanding of the components of that system and the interactions among them. NOAA Mission is to describe and predict changes in the Earth's environment, and conserve and manage wisely the Nation's coastal and marine resources to ensure sustainable economic opportunities. Since its inception, NASA has been studying the Earth and its constantly changing environment, observing the atmosphere, oceans, land, ice and snow, and their influence on climate and weather. Radar Images of Earth - Imaging Radar is a technique for obtaining images of the land and ocean surface of Earth from a satellite or aircraft.
Radar uses radio waves which can penetrate clouds and obtain images day or night.
Physical Oceanography Distributed Active Archive Center - This archive includes educational resources, public interest information, and oceanographic research data and information. You can find the latest data on El Nino and links to sites about Earth System Science. The GCMD is a source of information about Earth science data, with broad coverage of the atmosphere, hydrosphere, oceans, solid earth, and biosphere. For a minimal fee, NASA CORE will provide educators unable to visit one of the NASA Educator Resource Centers with materials through its mail order service.