This collection of activities covers such topics as the greenhouse effect, the stratospheric ozone layer, filtration of incoming electromagnetic radiation, the formation of clouds, and measurement skills. Full description.

The "Global Conveyer Belt" shows how the oceans move energy from the tropics to the poles and back again in order to moderate Earth's climate. This is accomplished through long-term ocean circulation. This on-line tutorial about ocean circulation features text, pictures, and satellite imagery with links to topics such as ocean heat transport, the coriolis effect, hills and valleys in the ocean, measurement ... Full description.

This is part of the National Oceanic and Atmospheric Administration's National Data Buoy Center website. It features text descriptions, graphs, and graphic illustrations to describe the development of land and sea breezes because of the unequal heating rates of land and water. Full description.

This is a news article on the International Conference on Atmospheric Electricity that was held in 1999. The article describes the use of wide-band interferometers (radio recievers) to construct three-dimensional maps of lightning within a storm. It also features links to other lightning-related sites. Full description.

This guide provides a brief introduction to the hydrologic cycle and related concepts. Users can choose from a set of links to pages which explain the distribution of water among the oceans, land, and atmosphere, and the mechanisms by which water is moved between its various sinks and sources. Full description.

This site provides information about the TOMS instrument, its mission, space craft, and data products. Visitors can access same-day or archived data on aerosols, ozone, reflectivity, ultraviolet radiation, or volcanic gases. Teachers can choose from a selection of links to activities and lesson plans. Other materials include news articles, movies, and links to related sites. Full description.

The Earth Observing System (EOS) consists of a series of Earth-observing satellites, a data system, and teams of scientists who will study the data. Educators can access a set of links to educational materials and publications, and real-time satellite tracking data. Other materials include mission profiles, information on the 24 measurements taken by EOS, research papers and reports, news articles, ... Full description.

This lesson focuses on the effects of volcanic eruptions on atmospheric chemistry. Students will use the internet to acquire data, analyze it graphically, and perform further analyses on recent eruptions and on hypothetical eruptions of their own. Procedures, standards, and links to the necessary materials are provided. Full description.

This document briefly discusses the two models most favored for the formation of Earth's atmosphere and compares the present-day atmosphere to the early oxygen-lacking atmosphere. Links to related topics are included. Full description.

Users of this resource may direct questions about global change to staff members at the U.S. Global Change Research Information Office (GCIRO). An archive of previous questions and answers is provided, along with links to other global change sites. Full description.