ARM

Tag: ENA

  • New Micropulse Lidar Cloud Mask Machine Learning VAP Released

    This sample MPLCMASKML plot from the Southern Great Plains atmospheric observatory shows the log of the normalized relative backscatter (log10 NRB), linear depolarization ratio (LDR), and cloud masks from the MPLCMASKML and MPLCMASK value-added products for December 24, 2017. The strength of the machine learning approach is apparent on this day when moderate aerosol loading…

  • Aerosol Optical Depth Product Generates New Data

    The colors represent aerosol optical depths measured at five different wavelengths with the multifilter rotating shadowband radiometer on June 19, 2019, at Oliktok Point, Alaska. New data are now available from the Aerosol Optical Depth value-added product derived from multifilter rotating shadowband radiometer measurements (AOD-MFRSR VAP). AOD is the measure of the total aerosol burden…

  • Aerosol Optical Depth Data Updated for Azores, Macquarie Island

    Measurements from the multifilter rotating shadowband radiometer, seen here at ARM’s Eastern North Atlantic atmospheric observatory, allow users to infer the atmosphere’s aerosol optical depth at each wavelength. Aerosol optical depth (AOD) is the measure of the total aerosol burden in a vertical column of the atmosphere. The AOD value-added product (VAP) has been running…

  • Cloud Droplet Number Concentration Product Updated

    This sample plot from the Southern Great Plains Central Facility shows the droplet number concentration for October 30, 2019. New data are available from the Droplet Number Concentration value-added product (NDROP VAP), which has been updated to use additional inputs. This will allow NDROP to be available quicker with better retrievals and to be applied…

  • New Microwave Radiometer Retrieval Data Available for Eastern North Atlantic

    This Microwave Radiometer Retrievals version 2 (MWRRETv2) quicklook image is from July 18, 2020, at the Eastern North Atlantic atmospheric observatory. From top to bottom, panels show observed brightness temperatures at 23.8 (blue), 30 (red), and 89 GHz (green); physically (red and blue) and statistically (green) retrieved precipitable water vapor; physically (red and blue) and…

  • Ka-Band ARM Zenith Radar Product Resumes for 2 Sites

    This set of plots illustrates the KAZRARSCL product. From top to bottom are time-versus-height plots of cloud boundaries, best-estimate hydrometeor reflectivity, and dealiased mean Doppler velocity for a sample date at Oliktok Point, Alaska. The Atmospheric Radiation Measurement (ARM) user facility has resumed production of the Ka-Band ARM Zenith Radar Active Remote Sensing of CLouds…

  • ACE-ENA Spotlight: Capturing the 4-Dimensional Variability of Shallow Precipitation

    Editor’s note: This is the third entry in a blog series about ARM’s Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) field campaign, which took place during 2017 and 2018. Pavlos Kollias, an ACE-ENA co-investigator from Stony Brook University, shares a new set of precipitation findings from the air- and ground-based campaign. Figure 1:…

  • Play Us a Sad Song: Longtime ARM Manager Paul Ortega Retires

    Colleagues share their parting words Editor’s note: Kirsten Shaw Fox, communications and external affairs at Los Alamos National Laboratory in New Mexico, sent in this post. Paul Ortega removes C-Band Scanning ARM Precipitation Radar panels from the Tropical Western Pacific site on Manus Island, Papua New Guinea. Photos are courtesy of Los Alamos National Laboratory…

  • ACE-ENA Spotlight: Measuring How Clouds Respond to Seasonal Aerosol Changes

    Editor’s note: This is the second entry in a blog series about ARM’s Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) field campaign, which took place during 2017 and 2018. Rob Wood, an ACE-ENA co-investigator from the University of Washington, shares a new set of findings from the air- and ground-based campaign. Every spring,…

  • ACE-ENA Spotlight: Illuminating Seasonal Aerosol Differences

    Editor’s note: This is the first entry in a blog series about ARM’s Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) field campaign, which took place during 2017 and 2018. ACE-ENA Principal Investigator Jian Wang, Washington University in St. Louis, provides a campaign overview and writes about aerosol findings from the air- and…