The site includes easily understood El Nino and La Nina forecasts. The forecasts are summaries of the Australian National Climate Centre's opinion regarding the outputs from various reputable oceanic or coupled ocean/atmosphere forecast models. NCC's interpretation may not necessarily be the same as the organizations producing the model output. Readers are therefore encouraged to follow the hyperlinks ... Full description.

The Geomagnetic and Solar Activity Forecast Service is a service of the British Geological Survey. It provides data for daily local, global and solar geomagenetic activity. Data includes information projected up to 27 days ahead using a linear prediction method, up to 3 days ahead using a non-linear prediction method and smoothed monthly solar and geomagnetic activity for the next solar cycle using ... Full description.

The Computational Geophysics and Geoinformatics homepage contains online data and software tools for paleomagnetism and plate tectonics. The page includes information on paleomagnetic data, gravity anomalies, satellite altimetry, GOTOPO 30 topography tools, plate tectonic reconstructions, Mediterranean reconstructions, current research, a plate tectonic modeling tutorial and links to additional information. ... Full description.

This site is an animated pyramid graph depicting the population of the US by age and sex from 1950 to 2050. The animation runs continuously. Links to other animations and a homepage are also available. Full description.

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.

The Department of Atmospheric Sciences at the University of Washington is running the Penn State/NCAR mesoscale model version 3.5 (MM5 v3.5) in order to produce high resolution meteorological forecasts for the Pacific Northwest. This site provides data for humidity, temperature, wind velocity, precipitation, and other meteorological measurements. The site displays data from MM5-eta and MM5-GFS models ... 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.

This site displays a click-and-zoom map of the US showing forecast temperatures as well as several other meteorological variables, normally updated every hour. Also available are maps showing chance of precipitation, temperature and wind, weather, dew point, weather, precipitation, dew point and cover. Maps can be changed to see forecasts for the current day, that night, and three days following. ... Full description.

The NEXRAD National Mosaic Reflectivity site allows users to search for reflectivity images by date. Daily images are available for 1 April 1995 to 18 April 1997, and hourly images are available for 19 April 1997 to 22 March 2004. The images are clickable maps that allows users to zoom in and out of the United States reflectivity images. Full description.

In this activity, students use an interactive online mass balance model to help understand the observed levels of chlorofluorocarbon CFC-12 over the recent past. They then explore the influence of post Montreal Protocol emission scenarios on future CFC levels and discuss the relevance of this to stratospheric ozone recovery. On this Starting Point page, users can access information about the exercise's ... Full description.