DOW7 Doppler Spectra
https://data.eol.ucar.edu/dataset/534.058

Summary
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.

Identifiers
 * Local archive identifier: 534.058
 * doi:10.26023/YH3G-VHXW-6R0C
   https://doi.org/10.26023/YH3G-VHXW-6R0C

Versions
  1.0

Citation
 Friedrich, K. 2025. SNOWIE: DOW7 Doppler Spectra. Version 1.0. NSF NCAR Earth
 Observing Laboratory. https://doi.org/10.26023/YH3G-VHXW-6R0C Accessed 01 May
 2026.

Additional citation styles can be generated by entering the DOI
at CrossCite (https://citation.doi.org/).

Acknowledgement
In addition to the citation reference and any other acknowledgements,
please acknowledge NSF NCAR EOL in your publications with text such as:

  Data provided by NCAR EOL under the sponsorship of
  the National Science Foundation.
  https://data.eol.ucar.edu/

Related projects
 * SNOWIE: Seeded and Natural Orographic Wintertime clouds - the Idaho Experiment
   https://data.eol.ucar.edu/project/SNOWIE

Additional information
 * Frequency: 6 minute
 * Language: English

Platforms
 * Vehicles

Instruments
 * DOW - Doppler on Wheels
 * Doppler Radar
 * Polarimetric Radar
 * Radar

GCMD Science Keywords
 * EARTH SCIENCE > ATMOSPHERE > WEATHER EVENTS > SNOW STORMS
 * EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > DOPPLER VELOCITY

Documentation
 * README_CU_DOW7_DopplerSpectrum_SNOWIE.pdf [170 KiB]
   https://data.eol.ucar.edu/file/download/558876778D151/README_CU_DOW7_DopplerSpectrum_SNOWIE.pdf

Related links
 * info: SNOWIE Data Policy
   https://www.eol.ucar.edu/content/snowie-data-policy
 * homepage: SNOWIE Home Page
   https://www.eol.ucar.edu/field_projects/snowie
 * info: SNOWIE Missions
   https://catalog.eol.ucar.edu/snowie/tools/missions

Temporal coverage
 * Begin datetime: 2017-01-08 00:00:00 
 * End datetime: 2017-03-16 23:59:59 

Spatial coverage
 * Maximum (North) Latitude: 44.21
 * Minimum (South) Latitude: 44.21
 * Minimum (West) Longitude: -116.07
 * Maximum (East) Longitude: -116.07

Primary contact information
 * pointOfContact: EOL Data Support <datahelp@eol.ucar.edu>
   https://data.eol.ucar.edu/contact/show/1

Additional contact information
 * author: Katja Friedrich <Katja.Friedrich@colorado.edu>
   https://data.eol.ucar.edu/contact/show/1554

Alternate metadata formats
 * DataCite: https://data.eol.ucar.edu/dataset/534.058?format=datacite
 * ISO/TC 211: https://data.eol.ucar.edu/dataset/534.058?format=isotc211