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Citizen's Weather Observer Program

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"The Citizen Weather Observer Program (CWOP) is a private-public partnership with three main goals: 1) to collect weather data contributed by citizens; 2) to make these data available for weather services and homeland security; and 3) to provide feedback to the data contributors so that they have the tools to check and improve their data quality. In fact, the web address,, stands for weather quality assurance.

There are over 6,000 registered CWOP members world wide and a graph of the number of North American CWOP stations sending data over the past four days is shown under the older name APRSWXNET. The number of world-wide citizen weather stations sending data through APRS-IS (Internet-Service) is shown for the past 4 years.

CWOP members send their weather data by internet alone and internet-wireless combination to the findU server and then every 15 minutes, the entire data set is sent from the findU server to the NOAA MADIS server. The data are checked for quality and then redistributed to users. There are over 500 different user organizations of mesonet data. Here is a partial list:

 * NWS Weather Forecast Offices
* National Center for Environmental Prediction
* National Ocean Service
* National Center for Atmospheric Research
* Denver Urban Drainage and Flood Control District
* Kennedy Space Center
* NASA Marshall Space Flight Center
* University Corporation for Atmospheric Research
* Embry-Riddle Aeronautical University
* MIT Lincoln Laboratories
* University of Utah
* Penn State University
* Mississippi State University
* University of Alaska
* University of North Dakota
* Hampton University
* Texas A&M University
* University of Hawaii
* Florida State University
* Weather Underground"



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Page last modified on February 23, 2009, at 01:02 PM EST