ARM

Category: Data Announcements

  • MPLCMASK Evaluation Data Available for MARCUS Campaign

    Sample plots from the MARCUS deployment show the log10 (backscatter) and the LDR for a selected range and UTC time for February 18, 2018. An updated version of the Micropulse Lidar Cloud Mask (MPLCMASK) value-added product (VAP) provides cloud boundaries and linear depolarization ratio (LDR) for the Measurements of Aerosols, Radiation, and Clouds over the…

  • Improved Quality Controlled Eddy Correlation Flux Measurement Data Extended for SGP

    Eddy correlation flux measurement (ECOR) systems, like this one at the Southern Great Plains observatory, are installed at ARM’s fixed and mobile observatories. These systems provide key measurements for the QCECOR VAP. Another year of data have been processed for the Quality Controlled Eddy Correlation (QCECOR) value-added product (VAP). This VAP provides improved surface turbulence flux…

  • New Radiation Data Quality (QCRAD) VAP Release Now Available

    A broadband radiometer station at ARM’s Southern Great Plains Central Facility near Lamont, Oklahoma, measures broadband solar (shortwave) and infrared (longwave) radiation. Data from this station have been processed as part of a new release for the Data Quality Assessment for ARM Radiation Data (QCRAD) value-added product. A new level 2 (c2/s2) release for the…

  • WACR-ARSCL Evaluation Data Available for MARCUS Field Campaign

    From top to bottom, these images from the MARCUS WACR-ARSCL VAP show best-estimate reflectivity, non-ship-corrected mean Doppler velocity, and ship-corrected mean Doppler velocity for November 28, 2017. A value-added product (VAP) that combines observations from the marine version of the 95 GHz W-Band ARM Cloud Radar (WACR) and other ARM mobile instruments now provides datastreams…

  • Radiation Data Quality VAP Expands to LASIC Field Campaign Site

    Radiometers on Ascension Island helped collect data as part of the LASIC field campaign, which studied smoke particles and their interaction with clouds as they passed westward over the Atlantic Ocean. A new release for the Data Quality Assessment for ARM Radiation Data (QCRAD) value-added product (VAP) covers the mobile deployment to Ascension Island for…

  • Newly Revised Value-Added Products Available for Raman Lidar

    Sample time-height cross-sections show a) water vapor mixing ratio, b) temperature, and c) aerosol backscatter coefficient from the Southern Great Plains Raman lidar on July 4, 2018. A suite of newly revised value-added products (VAPs) is now available for Raman lidars operated by the Atmospheric Radiation Measurement (ARM) user facility. The suite consists of three…

  • New Microwave Radiometer Retrievals VAP Data Available for Several ARM Campaigns and Sites

    Microwave radiometers, such as this one at ARM’s North Slope of Alaska atmospheric observatory, provide time-series measurements of column-integrated amounts of water vapor and liquid water. The Microwave Radiometer Retrievals (MWRRET) value-added product (VAP) has been processed for the following Atmospheric Radiation Measurement (ARM) user facility field campaigns and measurement sites: the ARM North Slope…

  • 30 New Case Dates Released for LASSO

    This skill score comparison shows cloud fraction results from the large-eddy simulation compared with total sky imager (TSI) observations. Each number represents a different ensemble member from the July 21, 2017, case. The Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO) team has processed and released 30 new case dates for the 2017 spring-summer…

  • Microwave Radiometer Retrieval Evaluation Data Available for Eastern North Atlantic

    The 3-channel microwave radiometer provides time-series measurements of brightness temperatures from three channels, which are sensitive to the presence of liquid water and precipitable water vapor. Evaluation data for the Microwave Radiometer Retrievals version 2 (MWRRETv2) value-added product (VAP) have been processed for the Atmospheric Radiation Measurement (ARM) user facility’s Eastern North Atlantic (ENA) atmospheric…

  • New Cloud Type VAP and Visualization Available

    A new data product—the Cloud Type Classification (CLDTYPE) value-added product (VAP)—provides an automated cloud type classification based on macrophysical quantities derived from vertically pointing lidar and radar. Up to 10 layers of clouds are classified into seven cloud types based on predetermined and site-specific thresholds of cloud top height, cloud base height, and thickness. Inputs…