Instrument : Millimeter Wavelength Cloud Radar (MMCR)

Instrument Categories
Cloud Properties

Picture of the Millimeter Wave Cloud Radar (MMCR)
Picture of the Millimeter Wave Cloud Radar (MMCR)

General Overview

The MMCR systems probe the extent and composition of clouds at millimeter wavelengths. The MMCR is a zenith-pointing radar that operates at a frequency of 35 GHz. The main purpose of this radar is
to determine cloud boundaries (e.g., cloud bottoms and tops). This radar will also report radar reflectivity (dBZ) of the atmosphere up to 20 km. The radar possesses a doppler capability that will allow the measurement of cloud constituent vertical velocities.

Output Value-Added Products

This instrument is an input to the following value-added products, which provide improved measurements or derived quantities.

Output Datastreams

  • mmcrcal : Millimeter Wavelength Cloud Radar (MMCR): calibration data
  • mmcrmom : Millimeter Wave Cloud Radar (MMCR), replaces mmcrcal and mmcrmoments datastreams following C-40 processor upgrade of 2003.09.09
  • mmcrmoments : Millimeter Wavelength Cloud Radar (MMCR): moments data
  • mmcrspeccmaskbl : Millimeter Wave Cloud Radar (MMCR), filtered spectral data, boundary layer mode
  • mmcrspeccmaskci : Millimeter Wave Cloud Radar (MMCR), filtered spectral data, cirrus mode
  • mmcrspeccmaskge : Millimeter Wave Cloud Radar (MMCR), filtered spectral data, general mode
  • mmcrspectra : Millimeter Wavelength Cloud Radar (MMCR): spectral data

Primary Measurements

The following measurements are those considered scientifically relevant.

Locations

North Slope Alaska
NSAC1Browse DataCentral Facility, Barrow AK
Southern Great Plains
SGPC1Browse DataCentral Facility, Lamont, OK
Tropical Western Pacific
TWPC1Browse DataCentral Facility, Manus I., PNG
TWPC2Browse DataCentral Facility, Nauru Island
TWPC3Browse DataCentral Facility, Darwin, Australia

Contact(s)

Kevin Widener
(509) 528-9565
kevin.widener@pnnl.gov

Nitin Bharadwaj
associate
(509) 372-4267
nitin@pnnl.gov

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