Scanning ARM Cloud Radar—Advanced—Velocity Azimuth Display Value-Added Product

Technical Report · Tue Jan 30 00:00:00 EST 2018

DOI:https://doi.org/10.2172/1418465· OSTI ID:1418465

Clothiaux, Eugene E. ^[1]; Johnson, Karen ^[2]; Toto, Tami ^[2]; Kollias, Pavlos ^[3]; Lamer, Katia ^[1]; Giangrande, Scott E. ^[2]; Oue, Mariko ^[3]

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1. Pennsylvania State Univ., University Park, PA (United States)
2. Brookhaven National Lab. (BNL), Upton, NY (United States)
3. Stony Brook Univ., NY (United States)

Spatial distribution of horizontal winds is an important meteorological property to understand mesoscale and cloud scale dynamics of cloud and precipitation systems. The most popular wind measurement is performed by soundings. The sounding observation is generally conducted 1-4 times per day, which may not be enough to observe detailed in-cloud structure. Doppler weather and cloud radars can perform frequent measurements of radial velocities of cloud/precipitation particles in clouds. The weather radar community has historically used the Velocity-Azimuth Display (VAD) technique to retrieve in-cloud wind properties (direction and speed) from radial velocity (e.g., Lhermitte and Atlas, 1961). The U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Climate Research Facility’s Ka- and W-band Scanning ARM Cloud Radars (SACRs) collect volume observations of mean Doppler velocity with horizon-to-horizon range height indicator (HSRHI) scans every 30-60 minutes. The SACR ADVanced Velocity-Azimuth Display (SACR-ADV-VAD) Value-Added Product (VAP) extends the VAD technique to cloud radar observations. The VAP provides time series of vertical profiles of in-cloud wind fields at higher temporal and vertical resolutions, which can augment sounding wind measurements.

• Research Organization: DOE Office of Science Atmospheric Radiation Measurement (ARM) Program (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Biological and Environmental Research (BER)
• Contributing Organization: Pennsylvania State University, Stony Brook University
• DOE Contract Number: AC05-7601830
• OSTI ID: 1418465
• Report Number(s): DOE/SC-ARM-TR-209
• Country of Publication: United States
• Language: English

Related Subjects

Velocity-Azimuth Display
W-band Scanning ARM Cloud Radar
Ka-band Scanning ARM Cloud Radar
horizon-to-horizon range height indicator