The National Climatic Data Center (NCDC) is the world's largest active archive of weather data. Climate data for cities and locations throughout the U.S. and around the world are available here. Products include land-based, upper air, satellite, and marine measurements of precipitation, wind, atmospheric pressure, clouds, and solar activity. Educators and government researchers can access many of ... Full description.

This site has information about where the tectonic plates were located in the Pleistocene and throughout geologic time. You can view animations of the plates moving or download models. Full description.

This USGS site contains very useful descriptions about many aspects of ground water. The major topics include Ground Water, How Ground Water Occurs, Quality of Ground Water, Appraising the Nation's Ground-Water Resources, and a Glossary. This is a non-technical site, designed for use by the general public. Several charts and diagrams are also included in this site. Full description.

This Environment Canada fact sheet highlights information about groundwater. The sheet starts with the definition of groundwater and aquifers, then discusses the hydrologic cycle, groundwater quality, contamination, and protection. A bibliography lists resources for further study. Full description.

This NASA site contains a wealth of information about hurricanes, including how they are created, how they move, and the dangers they pose. Also included are sections that deal with naming of hurricanes, hurricane hunters, a VR trip through a hurricane, satellite instrumentation, and a video of hurricane Andrew. Full description.

In this article, The Why Files examines the possible finding of water ice on our Moon, and the implications for this discovery. The article discusses why scientists believe there is water on the Moon, how a neutron spectrometer picks up the unusual presence of hydrogen on the Moon which could indicate water, what scientists hope to use this water for, and where this water may have come from. A moon ... Full description.

This site provides an explanation for cloud formation and seeks to correct myths or misconceptions about how clouds form. Water vapor, condensation, and evaporation are discussed in the context of dew-point temperature and saturation. Educators and anyone explaining cloud formation will find hints on how to present the correct information and avoid misinforming their audiences. Full description.

The National Weather and Climate Center presents snowpack data from snow courses and SNOTEL sites in the western United States as graphs and color-contoured maps. Historical and real-time data on depth of snowpack, snow-water-equivalence, and forecasts are available for individual sites and entire drainage basins. The site also includes information about how scientists collect SNOTEL data. Full description.

Surf Your Watershed is the Environmental Protection Agency's effort to provide a comprehensive center for geographically relevant information about drinking water regulations, drinking water publications, public water systems, ground water, and water quality and pollution issues. Resources include how to locate your watershed anywhere in the United States, state and tribal information, an index of ... Full description.

A joint project between the University Corporation for Atmospheric Research and the Office of Naval Research, Oceanography from the Space Shuttle is a pictorial survey of oceanic phenomena visible to the naked eye from space. Originally published in book form in 1989, it is now only available on this web site. The chapters, preceded by a general introduction and each accompanied by an abstract and ... Full description.