Instrument : W-Band (95 GHz) ARM Cloud Radar (WACR)
Instrument Categories
Cloud Properties
General Overview
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.
Output Datastreams
- wacr : W-band (95 GHz) ARM Cloud Radar
- wacrspeccmaskcopol : W-band (95 GHz) ARM Cloud Radar, filtered spectral data, co-polarized mode
- wacrspeccmaskxpol : W-band (95 GHz) ARM Cloud Radar, filtered spectral data, cross-polarized mode
- wacrspecmom : W-band (95 GHz) ARM Cloud Radar, spectral data
Primary Measurements
The following measurements are those considered scientifically relevant.
Locations
- Southern Great Plains (SGP)
- Central Facility, Lamont, OK (C1)
- ARM Mobile Facility (FKB)
- Black Forest, Germany (M1)
- ARM Mobile Facility (GRW)
- Graciosa Island, Azores, Portugal (M1)
- ARM Mobile Facility (HFE)
- Shouxian, Anhui, China (M1)
- ARM Mobile Facility (NIM)
- Niamey, Niger (M1)
- ARM Mobile Facility (PVC)
- Highland Center, Cape Cod MA; AMF 1 (M1)
Contact(s)
Kevin Widener
(509) 528-9565
kevin.widener@pnnl.gov
Nitin Bharadwaj
associate
(509) 372-4267
nitin@pnnl.gov
Dan Nelson
associate
(509) 375-3868
danny.nelson@pnnl.gov
Iosif (Andrei) Lindenmaier
associate
(509) 375--6802
iosif.lindenmaier@pnnl.gov
Karen Johnson
data analysis
(631) 344-5952
kjohnson@bnl.gov
