The National Oceanic and Atmospheric Association (NOAA) provides climate data for the United States. These data are primarily intended for the study of climate variability and change. Whenever possible, observations have been adjusted to account for the artificial effects introduced into the climate record by factors such as instrument changes, station relocations, observer practice changes and urbanization. ... Full description.

This National Oceanic and Atmospheric Administration website provides climate information and data. This site offers a variety of product links to climate monitoring, climate at a glance data, U.S. drought assessment, global climate change information, weather observation stations and more. Users can also link to organizations which participate in climate research such as the National Climate Data ... Full description.

The Vostok ice core has a long record of global carbon dioxide concentrations, with variations caused by factors other than photosynthesis and human activity. Ice core data sets from three different authors are available for download. Users can also link to other NOAA paleoclimate projects and information. Full description.

This website covers a Scientific American article "Hot Words: A claim of nonhuman-induced global warming sparks debate" by David Appell. Users may also follow links to the full Scientific American Digital website. Full description.

This page describes the tilt of the Earth's axis, its elliptical orbit, the length of the year and their relation to certain long-term cycles. Topics include the Milankovitch Cycles (cyclic changes in the direction of the Earth's rotation axis in space) and changes in obliquity (the tilt of the Earth's axis with respect to a direction perpendicular to its orbital plane). Full description.

The National Climatic Data Center (NCDC) provides radar data and derived products are on their Radar Resources webpage. The system from which these data are collected is the Weather Surveillance Radar-1988 Doppler network (WSR-88 Radar) which began operation at a few sites in 1991. Users can get and view online radar data, access products and publications, review data inventories, access the online ... Full description.

WeatherTap.com is a subscription service for online weather data. For 74 dollars a year, users can access numerous including real-time radar, high-resolution satellite imagery, lightning data, complete aviation and severe weather coverage and more. WeatherTap can be used to plot custom locations with lat/long coordinates, monitor individual storm tracks and attributes, measure distance, plot range ... Full description.

The What Should We Do About Global Warming module is a 3-4 week science module designed for introductory college courses and uses data to tackle questions related to global warming. The module includes short and long term temperature trend data, along with IR spectra, concentration trend data for greenhouse gases, and information about the Kyoto Protocol. Many of the data are in graphs which are part ... Full description.

This lab activity is part of the Starting Point collection. In this short, serial basic-meteorology lab, students identify different cloud types and estimate cloud cover over a period of several days. This website details learning goals, context for the lab, and teaching notes. A list of teaching materials and links to further resources are also provided. Full description.

In this activity, students work in groups, plotting carbon dioxide concentrations over time on overheads. They are asked to estimate, from their plots, the rate of change over five years. This Starting Point site details the carbon dioxide activity and highlights its learning goals and context, downloadable teaching materials, and additional links to references and resources. Full description.