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Hydrometeor Field Spatial Statistics Derived From Radar Scans
A new evaluation data set, Plan Position Indicator (PPI) Hydrometeor Field Statistics (PPIHYD), provides spatial statistics based on distinct (clustered) hydrometeor fields from radar scans. By leveraging information harvested from Atmospheric Radiation Measurement (ARM) user facility scanning radar measurements, statistics such as spatial moments and percentiles are calculated for radar reflectivity and Doppler spectral width…
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Characterized and Calibrated Radar Data Now Available for TRACER Campaign
This map indicates the Houston-area radar locations during TRACER, including those of the second-generation C-Band Scanning ARM Precipitation Radar (CSAPR2), Ka- and X-band scanning ARM cloud radars (SACR), and Ka-Band ARM Zenith Radar (KAZR). ARM’s radar team cross-compared data from the ARM and NOAA NEXRAD Houston/Galveston (KHGX) radars to help determine reflectivity offsets. Map was…
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Characterized and Corrected Radar Data Available for MOSAiC Expedition
From top to bottom, the figure shows the Marine W-Band ARM Cloud Radar (MWACR) raw reflectivity, MWACR corrected reflectivity, and Ka-Band ARM Zenith Radar general mode (KAZR GE) reflectivity for January 2, 2020, during the MOSAiC expedition. ARM staff applied a reflectivity offset to the MWACR data to bring them in line with the KAZR…
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Updated: Access New Gridded Cloud Radar Product for COMBLE Campaign
Editor’s note (July 20, 2023): A new KASACRGRIDPPI evaluation release for COMBLE, which uses b1-level calibrated PPI data as input, is now available. Output data from KASACRGRIDPPI are uncalibrated c1-level netCDF files, each comprising gridded observations for a single azimuthal scan. Surveillance scans are gridded for elevations of 0, 0.5, 1, and 2 degrees. Output…
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Updated: New Cloud Radar Products Available From COMBLE Campaign
Editor’s note (July 20, 2023): A new KASACRGRIDRHI evaluation release for COMBLE, which uses b1-level calibrated HSRHI data as input, is now available. The output is a single c1-level netCDF file containing calibrated radar moments remapped onto a 2D Cartesian grid. Access the data from the ARM Data Center. To cite the c1-level data, please…
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New ARM Data Epoch Assembled From COMBLE Campaign
In this satellite image of the Norwegian Sea on March 28, 2020, a cold-air outbreak spurs the formation of “cloud streets.” As these broken cloud decks stream southward, they evolve into cellular patterns. In red are the two instrument locations in Norway during ARM’s Cold-Air Outbreaks in the Marine Boundary Layer Experiment (COMBLE). This event…
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Scanning ARM Cloud Radar-Velocity Azimuth Display Product Released to Production
Horizontal wind speed and direction at cloud level, from SACR-ADV-VAD, are shown for the first seven days of August 2012 at ARM’s Southern Great Plains Central Facility. The Scanning ARM Cloud Radar-Advanced-Velocity Azimuth Display (SACR-ADV-VAD) value-added product, which provides profiles of horizontal wind estimates at cloud level, has moved to production. SACR-ADV-VAD uses radial mean…
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KASACR Data Quality Masks Value-Added Product Now Available in Evaluation
Evaluation data for the Ka-Band Scanning ARM Cloud Radar (KASACR) Data Quality Masks are now available from the Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) field campaign conducted in June and July 2017. The specific dates covered in this data set are June 18 through July 31, 2017. Data quality masks help…
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New Scanning ARM Cloud Radar – Advanced – Velocity Azimuth Display (SACR-ADV-VAD) Product Released to Evaluation
Horizontal wind speed and direction at cloud level is shown, from SACR-ADV-VAD, for the first seven days of August 2012 at the Southern Great Plains megasite. The Scanning ARM Cloud Radar-Advanced-Velocity Azimuth Display (SACR-ADV-VAD) value-added product (VAP) provides profiles of horizontal wind estimates at cloud level, using observations from the Hemispherical Sky Range Height Indicator…