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Meteorological Data (primarily government sites)
National Oceanic and Atmospheric Administration Climate Data Online
From the National Oceanic and Atmospheric Administration (NOAA). Access the archive of global historical weather and climate data in addition to station history information. These data include quality controlled daily, monthly, seasonal, and yearly measurements of temperature, precipitation, wind, and degree days as well as radar data and 30-year Climate Normals.
A source of timely and authoritative scientific data and information about climate.
National Weather Service (NWS)
Provides weather, water, and climate data, forecasts and warnings for the protection of life and property and enhancement of the national economy.
NASA Technical Reports Server (NTRS)
Provides access to aerospace-related citations, full-text online documents, and images and videos. The types of information include: conference papers, journal articles, meeting papers, patents, research reports, images, movies, and technical videos – scientific and technical information (STI) created or funded by NASA.
World Weather Information Service (United Nations)
This global web site presents official weather observations, weather forecasts and climatological information for selected cities supplied by NMHSs worldwide. The NMHSs make official weather observations in their respective countries. Links to their official weather service web sites and tourism board/organization are also provided whenever available. Weather icons are shown alongside worded forecasts in this version to facilitate visual inspection.
Colorado Climate Center
Provides information and expertise on Colorado's complex climate. Through its threefold program of Climate Monitoring (data acquisition, analysis, and archiving), Climate Research and Climate Services, the Center is responding to many climate related questions and problems affecting the state today.
Community Collaborative Rain, Hail, & Snow Network (COCORAHS)
A unique, non-profit, community-based network of volunteers of all ages and backgrounds working together to measure and map precipitation (rain, hail and snow). By using low-cost measurement tools, stressing training and education, and utilizing an interactive Web-site, their aim is to provide the highest quality data for natural resource, education and research applications.
American Association of State Climatologists
A professional scientific organization composed of state climatologists (one per state), directors of the six Regional Climate Centers and associate members who are persons interested in the goals and activities of the Association.