ARM

Tag: ARSCL

  • 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…

  • REVISED: New Shallow Cumulus VAP Available

    These plots provide data about shallow cumulus events at ARM’s SGP Central Facility in June 2017. The top panel shows days with shallow cumulus events. The bottom panel gives more information for up to four events, including whether the event contained overlying cirrus, was not detected because no low clouds were found, missed the length…

  • New Cloud Type VAP and Visualization Available

    A new data product—the Cloud Type Classification (CLDTYPE) value-added product (VAP)—provides an automated cloud type classification based on macrophysical quantities derived from vertically pointing lidar and radar. Up to 10 layers of clouds are classified into seven cloud types based on predetermined and site-specific thresholds of cloud top height, cloud base height, and thickness. Inputs…

  • Merged Multisensor Cloud-Precipitation Mask and Cloud Type Data Now Available for GoAmazon2014/15

    The example plot shown here is from a merged RWP-WACR-ARSCL data set. Key: a) WACR reflectivity; b) RWP reflectivity; c) new RWP-WACR-ARSCL cloud mask; d) cloud-type classification; e) microwave radiometer (MWR) retrieved liquid water path (blue), present weather detector (PWD) rain rate (black), and tipping bucket rain rate (red). The black dots in panels (a,…

  • LASSO Alpha 2 Supplement Includes 2015 Case Dates

    Plots from the Alpha 2 supplement show observed versus simulated cloud fraction for simulation number 13 on June 6, 2015. The plots show observed cloud fraction (top panel) retrieved from the Active Remote Sensing of CLouds (ARSCL) product using the Ka-Band ARM Zenith Radars (KAZRARSCL) product, the simulated cloud fraction (middle panel) based on large-eddy…

  • New Release of Radar CFAD Data Product for ARM Radar Simulator

    Measured radar reflectivity (top) and the calculated radar CFAD (bottom) are displayed for May 16, 2009. Updated: Newly released data are now included from the Southern Great Plains, North Slope of Alaska, and Tropical Western Pacific atmospheric observatories from 2011 to 2013. Previous radar CFAD data (nsaradarcfadC1.c1) for the period between 2006 and 2010 from the…

  • KAZR-ARSCL and KAZRCOR Products Now Available for 2011-2014 Data

    Sample images are shown here from the KAZR-ARSCL data product for the Southern Great Plains megasite on June 4, 2013. Time-versus-height images include a) hydrometeor best-estimate reflectivity, b) cloud-layer boundaries, c) instruments contributing to hydrometeor detection, and d) hydrometeor-versus-clutter mask. Updated 3/1/2017: Data has been updated from evaluation data to baseline production data. The Active…

  • An Update of WACR-ARSCL: Evaluation VAP Data Available

    A data plot example is shown here from Hyytiälä, Finland, for July 1, 2014. New data sets from the 95 GHz W-band ARM Cloud Radar-Active Remote Sensing of Clouds (WACR-ARSCL) are now available for download as an evaluation value-added product (VAP) for the ARM Mobile Facility (AMF) deployments in Hyytiälä, Finland, from February through September…

  • Droplet Number Concentration Value-Added Product Now Operational

    As aerosol concentration increases, droplet number concentration will increase and droplet size will decrease. Cloud droplet number concentration is an important factor in understanding aerosol-cloud interactions. As aerosol concentration increases, it is expected that droplet number concentration will increase and droplet size will decrease for a given liquid water path. This will greatly affect cloud…

  • Microwave Radiometer Retrieval Data Available for AMF Sites

    An example plot from the MWRRET VAP for 11/9/2007 at Black Forest, Germany: (top) Brightness temperatures measured by the microwave radiometer (MWR). Orange and blue lines indicate potential measurement spikes due to precipitation; (middle) retrieved precipitable water vapor from the new physical method (blue) and the original statistical method (green); (bottom) retrieved liquid water path…