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Doppler spectra are derived from vertical radar scans (89° elevation) by analyzing the in-phase (I) and quadrature (Q) components of the returned signal. The I/Q time-series data are divided into range gates, and a Fast Fourier Transform (FFT) is applied to convert the data from the time domain to the frequency domain. This reveals Doppler frequency shifts caused by moving scatterers, producing spectra that show the distribution of power across velocities. We corrected the data for the influence of the horizontal wind since the scans were not perfectly vertical and removed returns from ground-clutter. The data format is netCDF.
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SNOWIE: DOW6 Doppler Spectra. Version 1.0
Doppler spectra are derived from vertical radar scans (89° elevation) by analyzing the in-phase (I) and quadrature (Q) components of the returned signal. The I/Q time-series data are divided into range gates, and a Fast Fourier Transform (FFT) is applied to convert the data from the time domain to the frequency domain. This reveals Doppler frequency shifts caused by moving scatterers, producing spectra that show the distribution of power across velocities. We corrected the data for the influence of the horizontal wind since the scans were not perfectly vertical and removed returns from ground-clutter. The frequency of data collection was based on DOW6 scanning and data are usually sampled every 4-6 minutes. The data are in netCDF format.
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- Award ID(s):
- 2015829
- PAR ID:
- 10633368
- Publisher / Repository:
- UCAR/NCAR - Earth Observing Laboratory
- Date Published:
- Format(s):
- Medium: X Size: 15 data files; 1 ancillary/documentation file; 16 MiB Other: TAR: Unix Tape ARchive (TAR) Format File (application/x-tar)
- Size(s):
- 15 data files 1 ancillary/documentation file 16 MiB
- Location:
- (Latitude: 44.42000 ; Longitude: -116.14000 )
- Right(s):
- These data are available to be used subject to the University Corporation for Atmospheric Research ("UCAR") terms and conditions.
- Institution:
- University Corporation For Atmospheric Research UCARNational Center For Atmospheric Research NCAREarth Observing Laboratory EOLData Managment And Services DMS
- Sponsoring Org:
- National Science Foundation
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Doppler spectra are derived from vertical radar scans (89° elevation) by analyzing the in-phase (I) and quadrature (Q) components of the returned signal. The I/Q time-series data are divided into range gates, and a Fast Fourier Transform (FFT) is applied to convert the data from the time domain to the frequency domain. This reveals Doppler frequency shifts caused by moving scatterers, producing spectra that show the distribution of power across velocities. We corrected the data for the influence of the horizontal wind since the scans were not perfectly vertical and removed returns from ground-clutter.more » « less
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Doppler spectra are derived from vertical radar scans (89° elevation) by analyzing the in-phase (I) and quadrature (Q) components of the returned signal. The I/Q time-series data are divided into range gates, and a Fast Fourier Transform (FFT) is applied to convert the data from the time domain to the frequency domain. This reveals Doppler frequency shifts caused by moving scatterers, producing spectra that show the distribution of power across velocities. We corrected the data for the influence of the horizontal wind since the scans were not perfectly vertical and removed returns from ground-clutter. The frequency of data collection was based on DOW7 scanning and data are usually sampled every 4-6 minutes. The data are in netCDF format.more » « less
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