ARM

Tag: NSA

  • Users Ask for New Arctic Aerosol Measurements, and ARM Listens

    ARM installs set of aerosol instruments at neighboring NOAA facility in Utqiaġvik, Alaska ARM aerosol instruments are now installed at a NOAA facility at Utqiaġvik, Alaska, near ARM’s North Slope of Alaska atmospheric observatory. The instruments are an aerosol chemical speciation monitor (taking up most of this rack), an aerodynamic particle sizer (on a shelf…

  • New 2- and 3-Channel Microwave Radiometer Retrieval Data Produced

    This MWRRET quicklook image provides information from the 2-channel microwave radiometer that operated on the Ellen Browning Scripps Memorial Pier in La Jolla, California, during the EPCAPE campaign on December 14, 2023. 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…

  • Improved Broadband Radiation Data Available From ARM Fixed Sites

    ARM radiometers operate near Lamont, Oklahoma, on April 18, 2023. ARM file photo. The Atmospheric Radiation Measurement (ARM) user facility processes yearly data from the Data Quality Assessment for ARM Radiation Data (QCRAD) product—the recommended ARM datastream for broadband surface irradiance measurements—to produce level 2 (c2) files. These files undergo additional processing to improve the…

  • ARM Releases Products for Evaluating Climate Model and Radar and Lidar Simulator Outputs

    The left and right panels show differences between the original and CloudSat-aligned Ka-Band ARM Zenith Radar reflectivities (top) and contoured frequency altitude diagrams (CFADs) generated with those reflectivities (bottom) for January 5, 2014, at ARM’s Southern Great Plains atmospheric observatory. Image is courtesy of Yuying Zhang, Lawrence Livermore National Laboratory. To facilitate the direct comparison…

  • Surface Spectral Albedo Product Updated

    This example quicklook from the SURFSPECALB value-added product shows the estimated spectral albedo for each of the seven multifilter radiometer channels for the 10-meter tower at ARM’s Southern Great Plains atmospheric observatory on May 1, 2023. In fiscal year 2021, the Atmospheric Radiation Measurement (ARM) user facility added a seventh channel to its multifilter rotating shadowband…

  • Black Carbon Data Product Available for Use

    Sample plots show black carbon mass concentrations and size distributions from February 16, 2020, at ARM’s North Slope of Alaska (NSA) atmospheric observatory. On this day, smoke from biomass burning approached the NSA. The Atmospheric Radiation Measurement (ARM) user facility developed a data product for scientists to measure the black carbon (BC) mass loadings in…

  • New Microwave Radiometer Retrieval Data Now Available

    This Microwave Radiometer Retrievals (MWRRET) quicklook image provides information from the TRacking Aerosol Convection interactions ExpeRiment (TRACER) near Houston, Texas, on June 22, 2022. 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);…

  • New and Improved ARM Broadband Radiation Data Now Available

    Radiometers operate in mountainous terrain as part of the Surface Atmosphere Integrated Field Laboratory (SAIL) campaign near Crested Butte, Colorado. The campaign took place from September 2021 to June 2023. Photo is by David Chu, Los Alamos National Laboratory. The Atmospheric Radiation Measurement (ARM) user facility’s longtime recommended datastream for broadband surface irradiance measurements is…

  • New Data Product Determines Thermodynamic Phase of Cloud Hydrometeors

    Thermodynamic cloud phase identification is important to understand many cloud processes such as ice particle production, precipitation formation, and cloud life-cycle evolution, and it is essential to improve our understanding of cloud radiative properties and the atmospheric radiative budget. Because ice particles and liquid droplets have distinct sizes, shapes, fall velocities, and refractive indexes, clouds…

  • Cloud Type Classification Product Expands to North Slope of Alaska

    Time-height displays show reflectivity (top), cloud types (middle), and precipitation rate (bottom) on September 24, 2021, at ARM’s North Slope of Alaska atmospheric observatory. The Cloud Type Classification value-added product (CLDTYPE VAP) is now available for the Atmospheric Radiation Measurement (ARM) user facility’s North Slope of Alaska (NSA) atmospheric observatory. CLDTYPE provides an automated cloud…