ARM

Tag: SGP

  • Updated Surface Cloud Grid Data Now Available

    Plots of primary measurements from the Surface Cloud Grid (SFCCLDGRID) value-added product are generated for each sample time (15-minute sampling interval) and linked together to create movies of the change in the measurements over the day at ARM’s Southern Great Plains atmospheric observatory. In the figure above, the yellow ball represents the sun in the…

  • New Radiative Flux Analysis Data Produced for Southern Great Plains

    This plot shows irradiance and albedo—surface reflectivity—from the Radiative Flux Analysis (RADFLUXANAL) value-added product at the Southern Great Plains Central Facility’s broadband radiometer station from June 15 to 16, 2021. The Atmospheric Radiation Measurement (ARM) user facility processes yearly data from the Radiative Flux Analysis value-added product (RADFLUXANAL VAP) to produce level 2 (c2) data.…

  • New Precipitation Radar Data Products Released for 2 ARM Observatories

    Plots from the North Slope of Alaska data set show, clockwise from top left, hydrometeor classification (gate ID), reflectivity, cross-correlation coefficient, and velocity texture (mean Doppler velocity) generated from version 2 of the CMAC value-added product for November 23, 2019. The top left plot shows IDs of ground clutter, snow, and multitrip. Gate ID—the classification…

  • Cloud Condensation Nuclei Vertical Profile Data Product Updated

    This sample plot from ARM’s Southern Great Plains atmospheric observatory shows the retrieved number concentration of cloud condensation nuclei at 0.4% supersaturation for September 22, 2016. A new version of the Retrieved Number concentration of Cloud Condensation Nuclei value-added product (RNCCN VAP) is now available for evaluation. This VAP provides the vertical distribution of cloud…

  • Improved Microwave Radiometer Retrieval Data Produced for 2 ARM Sites

    This Microwave Radiometer Retrievals (MWRRET) quicklook image provides information from ARM’s Southern Great Plains Central Facility on July 2, 2021. The image shows, from top to bottom, observed brightness temperatures at 23.8 GHz (blue) and 31.4 GHz (red); retrieved precipitable water vapor from the physical method (blue) and statistical method (green); and retrieved liquid water…

  • Improved Broadband Radiation Data Quality Files Available From Southern Great Plains 

    A broadband radiometer station at ARM’s Southern Great Plains Central Facility near Lamont, Oklahoma, measures broadband solar (shortwave) and infrared (longwave) radiation. Data from this station have been processed as part of a new release for the Data Quality Assessment for ARM Radiation Data (QCRAD) product. The Atmospheric Radiation Measurement (ARM) user facility processes yearly…

  • Satellite-Aligned Version of Ka-Band ARM Zenith Radar Product Now Available

    The top image shows best-estimate reflectivity from the Ka-Band ARM Zenith Radar Active Remote Sensing of CLouds (KAZRARSCL) product for a sample day at the Southern Great Plains atmospheric observatory. The middle image provides the KAZRARSCL best-estimate reflectivity after statistical alignment with CloudSat. The bottom image shows the CloudSat reflectivity offset that was applied at…

  • ARM Best Estimate Data Sets Updated for 2 ARM Observatories

    The plots show ARMBEATM relative humidity (top) and surface precipitation (bottom) from May to October 2020 at ARM’s Southern Great Plains (SGP) atmospheric observatory. The Atmospheric Radiation Measurement (ARM) user facility provides tailored datastreams known as ARM Best Estimate (ARMBE) data products for use in the evaluation of global earth system models. The ARM Best…

  • New Aerosol Hygroscopicity Kappa Data Released for 3 ARM Sites

    Sample CCNSMPSKAPPA plots from the Cloud, Aerosol, and Complex Terrain Interactions (CACTI) field campaign show kappa values within critical diameter-supersaturation field space, top, and a time series of kappa, bottom, on November 15, 2018. Hygroscopicity is the ability of a particle to take up moisture from the environment and is important for understanding the formation…

  • First Routine Ice-Nucleating Particle Data Available From ARM Sites in Alaska, Oklahoma

    The ice nucleation spectrometer, seen here at ARM’s Southern Great Plains atmospheric observatory, measures the number concentration of ice-nucleating particles. Photo is by Chris Martin, ARM. The Atmospheric Radiation Measurement (ARM) user facility now provides routine data sets on ice-nucleating particles (INPs) from the third ARM Mobile Facility (AMF3) at Oliktok Point, Alaska, and from…