Global Hydrology and Climate Center is a joint venture between government (NASA) and academia to study the global water cycle and its effect on weather and climate. Satellites continually record information about the earth’s surface and atmosphere, and send large volumes of data (gigabytes per day) back to data processing and archiving centers. The GHCC’s data processing and archive center is the Global Hydrology Resource Center. The GHRC collects data from many different satellites, surface ground validation stations, as well as high altitude aircraft outfitted with science instruments. We also offer an extensive set of geostationary weather satellite images.

" The NASA Goddard Institute for Space Studies is located in the Morningside Heights-Columbia University neighborhood of New York City, at the corner of West 112th St. and Broadway. Our building, officially Columbia University's Armstrong Hall, is shown at right.
(...) The Current research of the GISS, under the direction of Dr. James Hansen, emphasizes a broad study of Global Change, which is an interdisciplinary research initiative addressing natural and man-made changes in our environment that occur on various time scales (from the seasonal effects of volcanic explosions to the millenia of ice ages) and affect the habitability of our planet. Program areas at GISS may be roughly divided into global climate modeling, Earth observations (which includes the International Satellite Cloud Climatology Program [ISCCP]), climate impacts, planetary atmospheres, paleoclimate, radiation, atmospheric chemistry, and astrophysics and other disciplines. However, due to the interconnectedness of these topics, most of the GISS staff are engaged in research in more than one of these areas. " more

The Crustal Dynamics Data Information System (CDDIS) supports data archiving and distribution activities for the space geodesy and geodynamics community. The main objectives of the system are to store space geodesy and geodynamics related data products in a central data bank, to maintain information about the archival of these data, and to disseminate these data and information in a timely manner to NASA investigators and cooperating institutions. The CDDIS staff and computer facility are located at NASA GSFC in Greenbelt, MD and is part of the Solar System Exploration Division within the Sciences and Exploration Directorate.

The CDDIS staff and computer facility are located at NASA GSFC in Greenbelt, MD and is part of the Laboratory for Terrestrial Physics within the Earth Sciences Directorate.

" The NASA Earth Observing System (EOS) Education Project disseminates Earth imagery, develops interdisciplinary programs, and deploys advanced technologies to the global K-16 education community. We investigate how geo-technologies help enhance our exploration and understanding of the diverse and changing landscapes of our world. " more

" The most common natural hazard in Southern California is earthquakes. Significant numbers of faults are found throughout the Southern California area. Scientists from JPL, Scripps, the USGS, and SCEC measure the Earth's movement and are working to understand how these movements relate to earthquakes. The data they collect can be used for many things including the improvement of earthquake hazard and damage estimates.
A satellite-based navigation and positioning system. Developed by the Department of Defense in 1973. A 24-satellite constellation orbiting 20,000 km above the Earth in 12-hour circular orbits.

Used for:

High-precision geodesy (surveying) -- motions (velocities) of points on the earth can be measured to better than 1 mm/yr.

Earthquake studies-- can measure plate tectonics and fault movement both during and in between earthquakes.

Monitoring of the ionosphere and sea level Weather forecasting and global climate studies

Navigation and positioning " more