This gazetteer allows users to view maps with the Tiger Map Server and obtain census data from the 2000 and 1990 Census Lookup server. Users may search for places, counties or MCDs by entering the name and state abbreviation or 5-digit zip code. When a location is found, the site provides population and latitude/longitude information for the specified area. There are links to a map of the area, as ... Full description.

WorldClimate.com contains over 85,000 records of historic weather averages (typical temperature and rainfall for each month averaged over a range of years) and is searchable by city. Full description.

This resource provides a graph of monthly average carbon dioxide (CO2) concentrations in ppmv (part per million by volume) versus time in years (1958 to 2000) at the Mauna Loa Observatory, Hawaii. This is a classic Earth science figure that illustrates the "breathing of the planet." The overall upward trend in CO2 concentrations since the 1950's is shown. The yearly cycle of C02 is shown in the yearly ... Full description.

The CNSS (Council of the National Seismic System) composite catalog is a world-wide earthquake catalog which is created by merging the master earthquake catalogs from contributing CNSS member institutions and then removing duplicate events, or non-unique solutions for the same event. The CNSS catalog may be searched for earthquakes within the United States and worldwide, and catalog files may be copied ... Full description.

Using surveys and topographic maps, the United States Geological Survey (USGS) has determined distances between points and elevations of features, and put them into a data format at this website. Elevations of the 50 largest cities, highest and lowest points in each state, summits over 14,000 feet, summits east of the Rocky Mountains, geographic centers of each state, length of US boundaries, and ... Full description.

The Northern California Earthquake Data Center (NCEDC) offers various types of earthquake-related data. Most of the datasets are available on the WWW. A few require the establishment of a research account. Available information includes: earthquake catalogs and lists; seismic waveform data from the Berkeley Digital Seismic Network, the Northern California Seismic Network, the Parkfield High-Resolution ... Full description.

This site contains a list of materials available for postal delivery, including: Icelandic basalt, Massachusetts marine sediment, Virginia diabase, Wyoming shale, etc. The size and content of each sample, descriptions of the location the reference material is taken from, and total element concentrations are given. Full description.

This dataset includes a broad suite of biogeochemical measurements, particularly dissolvable iron. The measurements span the time period from August 1998 to December 2004 and were taken at the most inshore station of a set of three which are maintained by the Monterey Bay Aquarium Research Institute (MBARI). The data show a large pulse of dissolvable iron consistently occurring during the first spring ... Full description.

The radiosonde real-time archive is comprised of all North American Global Telecommunications Service (GTS) observations primarily from Northern and Central American civilian and some military radiosonde sites not yet available on CD-ROM (currently 1997 thru 1999). Since late 1998, the archive has been upgraded to include all international observations transmitted via GTS. These data undergo extensive ... Full description.

Scorecard provides environmental maps with a pollution locator to search by area, for the following subjects: criteria air pollutants, hazardous air pollutants, lead hazards, lead contamination, animal waste from factory farms, toxic releases from industrial facilities, the Clean Water Act, watershed indicators, and setting environmental priorities. There are sections for chemical profile searches, ... Full description.