The NOAA Profiler Network (NPN) has 35 unmanned Doppler Radar sites in 18 central US states and Alaska. They provide hourly vertical profiles of wind data. The hourly netCDF files disseminated from Forecast Systems Laboratory (FSL) of NOAA starting from May 1992 are archived in this dataset. It continues to be updated monthly.

U and V wind components from 500m above ground level to 16.25km are recorded at every 250m increment. Several stations may have been moved or added. Problems of bird contamination are also reported. Flags are used to indicate the quality of data.

Detailed description of NPN and recent data (of last 14 days) are available at FSL's NPN site.