ARM

Tag: AMF2

  • New and Improved ARM Broadband Radiation Data Now Available

    Radiometers operate in mountainous terrain as part of the Surface Atmosphere Integrated Field Laboratory (SAIL) campaign near Crested Butte, Colorado. The campaign took place from September 2021 to June 2023. Photo is by David Chu, Los Alamos National Laboratory. The Atmospheric Radiation Measurement (ARM) user facility’s longtime recommended datastream for broadband surface irradiance measurements is…

  • 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…

  • New Data Product Determines Thermodynamic Phase of Cloud Hydrometeors

    Thermodynamic cloud phase identification is important to understand many cloud processes such as ice particle production, precipitation formation, and cloud life-cycle evolution, and it is essential to improve our understanding of cloud radiative properties and the atmospheric radiative budget. Because ice particles and liquid droplets have distinct sizes, shapes, fall velocities, and refractive indexes, clouds…

  • Radiosonde Parameters Calculation VAP Available

    This skew-T plot shows the pressure and temperature recorded by an ARM radiosonde launched during the TRacking Aerosol Convection interactions ExpeRiment (TRACER) on June 1, 2022, in La Porte, Texas. Red, blue, and green dots indicate different radiosonde parameters. A new value-added product (VAP) for calculating radiosonde parameters within convective cloud environments is now available…

  • ARM Best Estimate Cloud Radiation Data Released for MOSAiC

    ARMBECLDRAD cloud fraction (top) on July 20, 2020, during the Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition is derived from the Ka-Band ARM Zenith Radar Active Remote Sensing of Clouds (KAZRARSCL) product (bottom). The Atmospheric Radiation Measurement (ARM) user facility provides tailored datastreams known as ARM Best Estimate (ARMBE) data products…

  • Three New Value-Added Products Available for MOSAiC Expedition

    ARM instruments, including radars and aerosol instruments, operated on an icebreaker in the central Arctic during the 2019–2020 Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition. Photo is by Tercio Silva, then with Hamelmann Communications. The Atmospheric Radiation Measurement (ARM) user facility released three new value-added products (VAPs) from the 2019–2020 Multidisciplinary…

  • Evaluation Data Available From MARCUS Navigation and Ship Correction VAPs

    Figure a shows the MARCUS ship’s track—color-coded by day—from January 16 to 26, 2018. The minimum, the 25th percentile, the median, the 75th percentile, and the maximum beam angle (angle off the zenith) are represented by box-and-whisker plots in figure b, whereas the colors of the boxes correspond to the days on the map in…

  • New Ship Navigation Corrections for MAGIC and ACAPEX

    Mean Doppler velocity shown here from the MAGIC deployment on June 26, 2013, from the KAZR copol for a) uncorrected and b) corrected. A new suite of evaluation value-added products (VAPs) is now available for the second ARM Mobile Facility (AMF2) to provide accurate ship location and orientation during ocean deployments and to correct for…

  • Navigation Best Estimate Value-Added Product Released

    The measured pitch of the ship is shown here for the twelfth return trip from Honolulu to Los Angeles, also known as MAGIC Leg 12B. Developed in response to the first ship-based deployment of the second ARM Mobile Facility (AMF2), the Navigation Best Estimate (NAVBE) Value-Added Product (VAP) has been released for evaluation. Meteorological, cloud,…