• Login
    ARAN - Access to Research at NUI Galway
    View Item 
    •   ARAN Home
    • Support Services
    • Externally hosted open access publications with NUI Galway authors (2)
    • View Item
    •   ARAN Home
    • Support Services
    • Externally hosted open access publications with NUI Galway authors (2)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of ARANCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsTypesThis CollectionBy Issue DateAuthorsTitlesSubjectsTypes

    My Account

    LoginRegister

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Help

    How to submit and FAQs

    Vertical wind velocity measurements using a five-hole probe with remotely piloted aircraft to study aerosol–cloud interactions

    Thumbnail
    View/Open
    Full Text
    Date
    2018-05-03
    Author
    Calmer, Radiance
    Roberts, Gregory C.
    Preissler, Jana
    Sanchez, Kevin J.
    Derrien, Solène
    O'Dowd, Colin
    Metadata
    Show full item record
    Usage
    This item's downloads: 0 (view details)
    Cited 6 times in Scopus (view citations)
    
    Recommended Citation
    Calmer, Radiance; Roberts, Gregory C. Preissler, Jana; Sanchez, Kevin J.; Derrien, Solène; O'Dowd, Colin (2018). Vertical wind velocity measurements using a five-hole probe with remotely piloted aircraft to study aerosol–cloud interactions. Atmospheric Measurement Techniques 11 (5), 2583-2599
    Published Version
    https://www.atmos-meas-tech.net/11/2583/2018/amt-11-2583-2018.pdf
    Abstract
    The importance of vertical wind velocities (in particular positive vertical wind velocities or updrafts) in atmospheric science has motivated the need to deploy multi-hole probes developed for manned aircraft in small remotely piloted aircraft (RPA). In atmospheric research, lightweight RPAs ( < 2.5 kg) are now able to accurately measure atmospheric wind vectors, even in a cloud, which provides essential observing tools for understanding aerosol-cloud interactions. The European project BACCHUS (impact of Biogenic versus Anthropogenic emissions on Clouds and Climate: towards a Holistic UnderStanding) focuses on these specific interactions. In particular, vertical wind velocity at cloud base is a key parameter for studying aerosol-cloud interactions. To measure the three components of wind, a RPA is equipped with a five-hole probe, pressure sensors, and an inertial navigation system (INS). The five-hole probe is calibrated on a multi-axis platform, and the probe-INS system is validated in a wind tunnel. Once mounted on a RPA, power spectral density (PSD) functions and turbulent kinetic energy (TKE) derived from the five-hole probe are compared with sonic anemometers on a meteorological mast. During a BACCHUS field campaign at Mace Head Atmospheric Research Station (Ireland), a fleet of RPAs was deployed to profile the atmosphere and complement ground-based and satellite observations of physical and chemical properties of aerosols, clouds, and meteorological state parameters. The five-hole probe was flown on straight-and-level legs to measure vertical wind velocities within clouds. The vertical velocity measurements from the RPA are validated with vertical velocities derived from a ground-based cloud radar by showing that both measurements yield model-simulated cloud droplet number concentrations within 10 %. The updraft velocity distributions illustrate distinct relationships between vertical cloud fields in different meteorological conditions.
    URI
    http://hdl.handle.net/10379/10660
    Collections
    • Externally hosted open access publications with NUI Galway authors (2)
    • Copyright @ NUI Galway
    • Library
    • NUI Galway