ARM

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  • New Aerosol Optical Depth Data Available for TRACER Campaign

    The colors represent aerosol optical depths measured at wavelengths of 415, 500, 615, 673, 870, and 1625 nanometers (nm) with the multifilter rotating shadowband radiometer on May 12, 2022, in La Porte, Texas, during the TRACER campaign. The time of day is in Coordinated Universal Time (UTC). Data plot is by Evgueni Kassianov, Pacific Northwest…

  • 3-Dimensional Cloud Positions Produced for TRACER Campaign

    This figure presents Point Cloud of Cloud Points (PCCP) value-added data from July 25, 2022, during the TRACER field campaign. The upper panel displays the distribution of the reconstructed cloud points by time and height, and the colors represent the count of the detected points in the corresponding bin. The bottom panel is a picture…

  • Tethered Balloon System Merged Data Now In Production

    During the SAIL campaign, a tethered balloon system collects data at the East River Pumphouse site south of Gothic, Colorado, on June 14, 2023. Photo is by Nathan Bilow. The Tethered Balloon System Merged value-added product (TBSMERGED VAP) and the in-cloud version of the merged product (TBSMERGEDINCLOUD) have moved from evaluation to production. Both VAPs…

  • New AERI Noise Filtered Data Produced for 3 ARM Campaigns

    This quicklook image shows the time series of the radiance in window channels for Channel 1 (900 cm-1) and Channel 2 (2600 cm-1) on August 22, 2022, during the SAIL campaign. The Atmospheric Emitted Radiance Interferometer Noise Filtered value-added product (AERINF VAP) is now in production for the following field campaigns conducted by the Atmospheric…

  • New Cloud Microphysics VAP Evaluation Data Released for TRACER Campaign

    Sample plots show the primary fields from MICROBASEKAPLUS (liquid water content, liquid effective radius, ice water content, and ice effective radius) for October 14, 2021, at the TRACER ARM Mobile Facility site in La Porte, Texas. The Atmospheric Radiation Measurement (ARM) user facility’s Improved MICROBASE Product with Uncertainties (MICROBASEKAPLUS) is now available for the 2021–2022…

  • Micropulse Lidar Cloud Mask Machine Learning VAP Released for 2 ARM Campaigns

    This sample quicklook plot from the TRACER ARM Mobile Facility site shows the log of the normalized relative backscatter (log10 NRB), linear depolarization ratio (LDR), and cloud mask from the MPLCMASKML value-added product for September 6, 2022. In addition, the plot contains the machine learning model’s confidence in its prediction, as well as cloud base…

  • 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);…

  • ARM Best Estimate Data Produced for TRACER Campaign

    ARMBEATM relative humidity (top) and surface precipitation (bottom) are shown for the first 120 days of 2022 during the TRacking Aerosol Convection interactions Experiment (TRACER). 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 climate models. Two ARMBE data…

  • Radiative Flux Analysis Data Released for TRACER Campaign

    This plot shows irradiance and albedo—surface reflectivity—from the RADFLUXANAL value-added product at the main site of the TRacking Aerosol Convection interactions ExpeRiment (TRACER) from June 20 to 21, 2022. The Radiative Flux Analysis value-added product (RADFLUXANAL VAP) is now available for the 2021–2022 TRacking Aerosol Convection interactions ExpeRiment (TRACER) near Houston, Texas. RADFLUXANAL calculates clear-sky irradiance…

  • New Broadband Irradiance Data Produced for 2 ARM Sites

    This collection of radiometers at Oliktok Point, Alaska, provided continuous measurements of broadband shortwave (solar) and longwave (infrared) irradiances for downwelling components. ARM stopped collecting data at Oliktok Point in June 2021 after almost eight years. New c2-level data are available from the Data Quality Assessment for ARM Radiation Data (QCRAD) product at Oliktok Point,…