ARM

Tag: DL

  • MOSAiC Doppler Lidar Motion Correction VAPs Now in Production

    The location of ARM’s Doppler lidar on the R/V Polarstern during the MOSAiC expedition is indicated in this ARM file photo. Two value-added products (VAPs) specifically designed for the 2019–2020 Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition recently moved from evaluation to production. The Doppler Lidar Motion Correction (DLMC) VAP applies…

  • Wind Profiles Derived From Motion-Corrected MOSAiC Lidar Data

    Using this example of a wind profile scan on a tilted surface, winds are retrieved at height z by interpolating the radial velocities in each beam to height z and then applying the standard wind retrieval technique to the interpolated data. A new value-added product (VAP) developed specifically for the Multidisciplinary Drifting Observatory for the…

  • ARM Rolls Out New Products for Determining Boundary-Layer Height

    Plots from top to bottom show micropulse lidar (MPL) backscatter; ceilometer (CEIL) backscatter; Doppler lidar (DL) vertical air motion variance; and estimates of planetary boundary-layer height (PBLHT) derived from MPL, CEIL, DL, and sonde measurements at ARM’s Southern Great Plains Central Facility on June 28, 2017. The structure and depth of the planetary boundary layer…

  • Doppler Lidar Data Products Released for 3 ARM Campaigns

    Time-height displays show Doppler lidar data from April 14, 2020, during the Cold-Air Outbreaks in the Marine Boundary Experiment (COMBLE). The top plot indicates wind speed (color) and wind vector direction (arrows), and the bottom plot provides vertical velocity. The Atmospheric Radiation Measurement (ARM) user facility operates Doppler lidars around the globe to provide measurements…

  • New MOSAiC Value-Added Product Released to Evaluation

    ARM deployed a Doppler lidar on the research icebreaker R/V Polarstern for the Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition. The Polarstern left Tromsø, Norway, in September 2019 for a 13-month expedition that went through the central Arctic. A new value-added product (VAP) developed specifically for the Multidisciplinary Drifting Observatory for…

  • Companion Data Sets Key In on Eastern North Atlantic Doppler Lidar

    This Doppler lidar operates at ARM’s Eastern North Atlantic atmospheric observatory. Doppler lidars record raw backscatter and mean Doppler velocity. Photo is by Bruno Cunha, ARM. Two new Doppler lidar principal investigator data sets are available from the Atmospheric Radiation Measurement (ARM) user facility’s Eastern North Atlantic (ENA) atmospheric observatory. Doppler lidars, which record backscatter…