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W-Band (95 GHz) ARM Cloud Radar (WACR)

Instrument Categories: Cloud Properties

General Overview

W-band ARM cloud radar

The W-band Atmospheric Radiation Measurement (ARM) Program Cloud Radar (WACR) systems are zenith pointing Doppler radars that probe the extent and composition of clouds at 95.04 GHz. The main purpose of this radar is to determine cloud boundaries (e.g., cloud bottoms and tops). This radar reports estimates for the first three spectra moments for each range gate up to 15 km. The 0th moment is reflectivity, the 1st moment is radial velocity, and the 2nd moment is spectral width. Also available are the raw spectra files. Unlike the millimeter wavelength cloud radar (MMCR), the WACR does not use pulse coding and operates in only copolarization and cross-polarization modes.

Primary Measurements Taken

The following measurements are those considered scientifically relevant. Refer to the netCDF File Header Descriptions (Data Object Design Files) for the list of all available measurements, including those recorded for diagnostic or quality assurance purposes.

Available Datastreams

Sites / Facilities

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Mentor(s)

Kevin Widener
(509) 375-2487
kevin.widener@pnl.gov

Karen Johnson
data analysis
(631) 344-5952
kjohnson@bnl.gov