Rapid Refresh (RAP) [20 km]
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title: Rapid Refresh (RAP) [20 km]
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date: 2012-05-09
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linkage: http://rapidrefresh.noaa.gov/
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abstract: The Rapid Refresh (RAP) numerical weather model took the place of the Rapid Update Cycle (RUC) on May 1, 2012. Run by the National Centers for Environmental Prediction (NCEP), RAP runs with two versions. The first generates weather data on a 13-km (8-mile) resolution horizontal grid and the second, the High-Resolution Rapid Refresh (HRRR), generates data down to a 3-km (2-mile) resolution grid for smaller regions of interest. RAP forecasts are generated every hour with forecast lengths going out 18 hours with a 1 hour temporal resolution. Multiple data sources go into the generation of RAP forecasts: commercial aircraft weather data, balloon data, radar data, surface observations, and satellite data. This dataset contains a 20 km horizontal resolution Lambert Conformal grid covering the Continental United States (CONUS) domain.
purpose: Developed to serve users needing frequently updated short-range weather forecasts, including those in the US aviation community and US severe weather forecasting community. Also used prominently for energy-related (especially renewable) forecast guidance.
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keyword: 10 km - < 50 km or approximately .09 degree - < .5 degree
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fees: In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
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maintenanceNote: Bulk metadata change applied on 2023-06-23. See version control repository history for metadata change details.
