ARM

Tag: ENA

  • New Aerosol Hygroscopicity Kappa Data Available

    Sample CCNSMPSKAPPA plots from the Surface Atmosphere Integrated Field Laboratory (SAIL) field campaign in Colorado show kappa values within critical diameter-supersaturation field space (top) and a time series of kappa (bottom) on March 15, 2022, at ARM’s Aerosol Observing System (AOS) site on Crested Butte Mountain. The CCN particle counter and SMPS operated as part…

  • ARM Expands Collection of Merged Aerosol Size Distribution Data

    The plots show a selection of hand-labeled quality assessments (good, indeterminate, and bad) for MERGEDSMPSAPS aerosol size distributions from ARM data. These distributions and labels were used to train the MERGEDSMPSAPSML value-added product. The Atmospheric Radiation Measurement (ARM) user facility currently operates at least four instruments that measure a portion of the ambient aerosol size…

  • Radiosonde Parameter Calculation Data Sets Grow at 2 ARM Sites

    This skew-T plot shows the pressure and temperature recorded by an ARM radiosonde launched from ARM’s Southern Great Plains Central Facility near Lamont, Oklahoma, on June 26, 2020. Red, blue, and green dots indicate different radiosonde parameters. New and historical data from the Convective Parameters Derived from Radiosonde Data value-added product (SONDEPARAM VAP) are now…

  • Atmospheric Emitted Radiance Interferometer Product Expands to 4 ARM Campaigns

    The figure shows a time series of temperature, relative humidity, and water vapor mixing ratios retrieved from AERIoe for the Cloud, Aerosol, and Complex Terrain Interactions (CACTI) field campaign in Argentina on February 24, 2019. The Atmospheric Emitted Radiance Interferometer Optimal Estimation value-added product (AERIoe VAP) is now available in evaluation mode for the following four field…

  • 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…

  • Radiosonde Parameters Calculation VAP Available

    This skew-T plot shows the pressure and temperature recorded by an ARM radiosonde launched during the TRacking Aerosol Convection interactions ExpeRiment (TRACER) on June 1, 2022, in La Porte, Texas. Red, blue, and green dots indicate different radiosonde parameters. A new value-added product (VAP) for calculating radiosonde parameters within convective cloud environments is now available…

  • Micropulse Lidar Cloud Mask Machine Learning VAP Now In Production

    This sample quicklook plot from the Southern Great Plains atmospheric observatory shows the log of the normalized relative backscatter (log10 NRB), linear depolarization ratio (LDR), and cloud mask from the MPLCMASKML value-added product for January 1, 2015. In addition, the plot contains the machine learning model’s confidence in its prediction, and cloud base and cloud…

  • Cloud Type Classification Product Released for Eastern North Atlantic

    Time-height displays show reflectivity (top) and cloud types (bottom) on August 15, 2016, at ARM’s Eastern North Atlantic atmospheric observatory. The Cloud Type Classification value-added product (CLDTYPE VAP) is now available for the Atmospheric Radiation Measurement (ARM) user facility’s Eastern North Atlantic (ENA) atmospheric observatory. CLDTYPE provides an automated cloud type classification based on macrophysical…

  • New Microwave Radiometer Retrieval Data Available for Eastern North Atlantic

    This Microwave Radiometer Retrievals version 2 (MWRRETv2) quicklook image is from January 24, 2022, 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…

  • Access New Ice-Nucleating Particle Data From Eastern North Atlantic Campaign

    The Portable Ice Nucleation Experiment (PINE) chamber operated from October 2020 to March 2021 as part of a field campaign at ARM’s Eastern North Atlantic (ENA) atmospheric observatory. Photo is by Larissa Lacher, Karlsruhe Institute of Technology. Only a subset of atmospheric particles, known as ice-nucleating particles (INPs), can initiate ice formation in the atmosphere.…