National Severe Storms Laboratory-Based in Norman, Oklahoma, this internationally known environmental research laboratory specializes in the study of all aspects for severe weather (tornadoes, thunderstorms, lightning, hail, floods, and damaging winds). "NSSL Briefings" is available full-text through this page

Atlas of Hawaiian Watersheds and Their Aquatic Resources

Rainfall Atlas of Hawaii

• Agriculture, Climate Change and Carbon Sequestration
• Climate Action Network - a worldwide network of over 550 Non- Governmental Organizations (NGOs) working to promote government and individual action to limit human-induced climate change to ecologically sustainable levels.
• Climate Action: Energy For A Changing World
• Climate Literacy and Energy Awareness Network
• CLIWOC: Climatological Database for the World's Oceans 1750-1850
• Comprehensive Glossary of Weather Terms For Storm Spotters
• European Environmental Agency
• Global Change Master Directory - Descriptions of and links to data sets on many aspects of earth science.
• NASA's Earth Observing System
• Sila: Clue in to Climate Change - A site from the Canadian Museum of Nature focused on climate change in the Arctic.
• Stormtrack - This site is designed to allow amateur storm chasers to get the latest weather data from the National Weather Service, and serves as an access point for their reports and photographs of tornados and severe thunderstorms.
• The Intergovernmental Panel on Climate Change - Created jointly by the World Meteorological Organization and the Un Environment Program, this body serves as the international forum for assessing current scientific data on the impact of climate shifts and their socio-economic impacts globally.
• UM Weather (University of Michigan) - "The Internet's premier source of weather information, over 300 weather sites."
• WIND and SEA: the oceanic and atmospheric sciences Internet locator - An up-front index lists 40 main topics, from air pollution to wetlands. Of these, oceanography, weather, climate, coastal studies, endangered species, the history of oceanic and atmospheric sciences, and wetlands are categories most relevant geography.

• American Meteorological Society - A valuable feature of this professional society's page is "AMS Journals Online," which gives free text search access to either the society periodicals or specific titles.
• Atlantic Oceanographic and Meteorological Laboratory: Hurricane Research Division
• Australian Space Weather Agency
• British Atmospheric Data Center - Based in Oxfordshire, the Center "assists UK atmospheric researchers to locate, assess, and interpret data. Center produced datasets are accessible through an Internet link, as are external datasets housed there. Meteorological, atmospheric chemistry and stratospheric data are provided.
• Cooperative Institute for Meteorological Satellite Studies - A joint venture of the University of Wisconsin and NASA, with research programs on operational weather satellites, instrument development, applications ranging from biomass burning monitoring to numerical weather prediction. Featured projects include ARTIC Fire (an Arctic Cloud experiment) and the Winter Storm Reconnaissance Program.
• GISS: Goddard Institute for Space Studies at Columbia University in New York
• International Weather Satellite Imagery Center - A listing of weather imagery and films taken by satellites worldwide, arranged by region and heavily weighted towards North America.
• Lightning and Atmospheric Electricity Research at the Global Hydrology and Climate Center (GHCC)
• Met Office (U.K. weather center) The British equivalent of the U.S. National Weather Service.
• Midwestern Regional Climate Center - A cooperative program of the National Climatic Data Center and the Illinois State Water Survey, one of six such centers in the United States. Both historical analysis and current data are provided, as are climate summaries for each Midwestern state.
• NASA Satellite Images - A listing of specific image files arranged alphabetically by place or region name.
• National Climatic Data Center - Based in Asheville, NC, this is the world's largest active archive of weather data covering 150 years and virtually all NOAA information. Sections on satellite resources, radar resources, climatic extremes and weather events. Search capability by maps and individual events is provided.
• National Hurricane Center - The major U.S. facility monitoring tropical cyclones over the Atlantic, Caribbean, Gulf of Mexico, and Eastern Pacific from May 15 through November 30. Historical charts from 1492 to date are accessible, along with seasonal summaries by region and details of aircraft reconnaissance.
• National Oceanic and Atmospheric Administration (NOAA) - Useful links from this page include the National Environmental Satellite Data and Information Service. A basic starting point for research involving the environment, climate, coastal issues, etc.
• National Oceanographic Data Center (NODC)
• National Severe Storms Laboratory - Based in Norman, Oklahoma, this internationally known environmental research laboratory specializes in the study of all aspects for severe weather (tornadoes, thunderstorms, lightning, hail, floods, and damaging winds). "NSSL Briefings" is available full-text through this page.
• National Snow and Ice Data Center
• National Weather Association - This professional organization site lists both Association publications and a set of "Meteorology and Science Links."
• NBC News Intellicast - Useful for update on both world weather (by region and city) and the United States, complete with detailed image files updated regularly.
• NCEP/NCAR Reanalysis - Weather data at six-hour intervals over a 50-year period, from 1948 to 1998.
• NOAA Climate Analysis Branch
• NOAA Climate Diagnostics Center Map Room
• NOAA National Weather Service Climate Prediction Center - Includes news, outlooks ranging from 6 days to 3 months, a drought assessment, and more.
• NOAA Paleoclimatology Program
• NOAA Space Weather Prediction Center
• Scripps Institution of Oceanography
• SEDAC: Stratospheric Ozone and Human Health Project - The purpose of this site is to provide data and resources in the areas of ultraviolet (UV) radiation, ozone, and human health. A bibliographic database of expert literature is included. Covering the period of 1979 to present.
• Space Weather Canada
• Storm Prediction Center
• The Weather Channel
• University Corporation for Atmospheric Research
• World Meteorological Organization,(WMO) - The specialized agency of the United Nations coordinating global scientific activity relating to all aspects of weather. The full text of recent press releases, official statements, and media features is provided.

• An El Nino Page: Accessing Distributed Information Related To El Nino - A comprehensive site on this global weather event, maintained by the National Oceanographic and Atmospheric Administration.
• Environmental Impacts of Hurricane Katrina - Topic adressed on thei site are the identification and spread of toxic mateials,  satellite data, damage to coastal wetlands and species distribution, and analyses of Gulf water quality.
• Extreme weather sourcebook - The joint product of professional and Federal meteorological organizations, this site provides "economic and other societal impacts related to hurricanes, floods, tornadoes, lighting, and other U.S. weather phenomena." Individual state data is included.
• NASA Atlas of Extratropical Storm Tracks
• NASA's Global Tropospheric Experiment
• National Science Foundation: Predicting Seasonal Weather
• NOAA Center for Tsunami Research - Housed at the Pacific Marine Environmental Laboratory in Seattle, this project seeks to investigate tsunami hazards to the Pacific coast of the United States and Hawaii through an integrated approach to early warning. Realtime data feeds are available from selected buoys. Sections of the site cover data on individual tsunami events, modeling and forecasting, foundation mapping efforts, and the National Tsunami Hazard Mitigation Program.
• NOAA Climate Diagnostics Center Map Room
• Noctilucent Clouds Observing Network
• Spaceweather.com
• The Aurora Page
• The Tornado Project Online - A corporate page with detailed listings of storm-related data such as the Fujita scale, and all tornadoes within a given calendar year beginning in 1950, arranged by state.
• U.S. Drought Portal
• U.S. South Pole Station
• Western Regional Climate Center

For access to datasets in the field of meteorology, users should consult the National Centers for Environmental Information

Another useful means of locating existing datasets is the WORLDCAT database, which sorts search results by category- datasets that have been catalogued will appear under the heading " Computer ."

For the state of Illinois, an historic body of climatic data from 117 local stations can be found at the Illinois State Water Survey