ARM

Category: Data Announcements

  • Radiation Data Quality VAP Now Available for CACTI Field Campaign

    Preparing for the 2018–2019 Cloud, Aerosol, and Complex Terrain Interactions (CACTI) field campaign in Argentina, a technician works on ARM sky radiometers on stand for downwelling radiation. These instruments are a key contributor to the Data Quality Assessment for ARM Radiation Data (QCRAD) value-added product. The Atmospheric Radiation Measurement (ARM) user facility’s longtime recommended datastream…

  • Updated Micropulse Lidar Cloud Mask VAP in Production

    Sample Micropulse Lidar Cloud Mask (MPLCMASK) plots from the Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition show the log10 (backscatter), linear depolarization ratio (LDR), and cloud mask for October 7, 2019. Production data for Atmospheric Radiation Measurement (ARM) user facility sites operating fast-switching polarized micropulse lidars are now available from an…

  • Large-Scale Forcing Data Released for ACE-ENA Campaign

    (Left) The map shows the variational analysis domain (enclosed by the red line) for the Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) field campaign. The domain is centered at ARM’s Eastern North Atlantic (ENA) atmospheric observatory on Graciosa Island. (Right) Sample plots show domain-averaged surface precipitation from the ENA rain gauge and…

  • New Radiation Data Quality VAP Release for Eastern North Atlantic

    Seen at ARM’s Eastern North Atlantic atmospheric observatory, sky radiometers on stand for downwelling radiation are among the instruments that contribute to the Data Quality Assessment for ARM Radiation Data (QCRAD) value-added product. A new level 2 (c2/s2) release of the Data Quality Assessment for ARM Radiation Data (QCRAD) value-added product (VAP) is now available…

  • ARM Best Estimate Data Sets Released for Eastern North Atlantic

    ARMBEATM relative humidity (top) and surface precipitation (bottom) are shown from ARM’s Eastern North Atlantic (ENA) atmospheric observatory in 2018. 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 earth system models (Xie et al. 2010). Two ARMBE data…

  • New Lifting Condensation Level Height VAP Available

    The plot shows lifting condensation levels (LCLs) on March 6, 2019, for seven ARM Southern Great Plains (SGP) facilities and six Oklahoma Mesonet stations, all within 60 kilometers of the SGP Central Facility (sgpC1). The map identifies each location according to the color in the legend and time series. Plotted LCL heights of the individual…

  • New VAP Maps Scanning ARM Precipitation Radar Data to Cartesian Grid

    Hydrometeor classification for October 4, 2017, at the ARM Southern Great Plains I5 site is mapped to a Cartesian grid using the nearest neighbor interpolation method. The plot shows identifiers of ground clutter, rain, snow, multi-trip echoes (an artifact arising from the nature of the radar measurement), and melting. On the right are two subplots…

  • ARM Best Estimate Data Sets Released for GoAmazon Campaign

    ARMBEATM relative humidity (top, unit: %) and surface precipitation (bottom, unit: mm/hr) are shown from the Green Ocean Amazon (GoAmazon2014/15) campaign in 2014. ARMBECLDRAD cloud fraction (top) on September 1, 2014, near Manacapuru, Brazil, is derived from the W-Band ARM Cloud Radar Active Remote Sensing of Clouds (WACR-ARSCL) product (bottom). The Atmospheric Radiation Measurement (ARM)…

  • Cloud Microphysics VAP Evaluation Data Available for MC3E Field Campaign

    Cloud microphysical properties affect cloud radiative heating, precipitation formation, and aerosol-cloud interactions, among other important atmospheric processes. A value-added product (VAP) that calculates cloud microphysical properties now provides evaluation data for the 2011 Midlatitude Continental Convective Clouds Experiment (MC3E) in Oklahoma. The Improved MICROBASE Product with Uncertainties (MICROBASEKAPLUS) provides continuous, high time resolution profiles of…

  • ARM CACTI Radar Data Ascend to New Level of Usability

    Highly characterized data from Argentina achieve data epoch status The second-generation C-Band Scanning ARM Precipitation Radar (CSAPR2) went on its first deployment during the 2018‒2019 Cloud, Aerosol, and Complex Terrain Interactions (CACTI) field campaign in Argentina. The CSAPR2 was one of four ARM radars that operated during CACTI. Photo is by Joseph Hardin, Pacific Northwest…