ARM

Category: Data Announcements

  • 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…

  • 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…

  • Characterized and Corrected Radar Data Available for MOSAiC Expedition

    From top to bottom, the figure shows the Marine W-Band ARM Cloud Radar (MWACR) raw reflectivity, MWACR corrected reflectivity, and Ka-Band ARM Zenith Radar general mode (KAZR GE) reflectivity for January 2, 2020, during the MOSAiC expedition. ARM staff applied a reflectivity offset to the MWACR data to bring them in line with the KAZR…

  • Tropical Storm Hilary Is Focus of ARM EPCAPE Data Epoch

    With EPCAPE instruments in the foreground, a camera on Mount Soledad captures Tropical Storm Hilary sweeping through La Jolla, California, on August 20, 2023. View more images from the storm. A new data epoch from the Atmospheric Radiation Measurement (ARM) user facility captures a piece of history observed during a recent field campaign in La…

  • 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…

  • 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…

  • Microwave Radiometer Retrieval Data Now Available for SAIL

    This MWRRET quicklook image provides information from the SAIL campaign near Crested Butte, Colorado, on March 22, 2022. From top to bottom, the image shows 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 path from…

  • 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 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…