Preprints
https://doi.org/10.5194/egusphere-2022-110
https://doi.org/10.5194/egusphere-2022-110
 
13 May 2022
13 May 2022

Towards vertical wind and turbulent flux estimation with multicopter UAS

Norman Wildmann and Tamino Wetz Norman Wildmann and Tamino Wetz
  • Deutsches Zentrum für Luft- und Raumfahrt e.V., Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany

Abstract. Vertical wind velocity and its fluctuations are essential parameters in the Atmospheric Boundary Layer (ABL) to determine turbulent fluxes and scaling parameters for ABL processes. The typical instrument to measure fluxes of momentum and heat in the surface layer are sonic anemometers. Without the infrastructure of meteorological masts and above their typical heights, in-situ point measurements of the three-dimensional wind vector are hardly available. We present a method to obtain the three-dimensional wind vector from avionic data of small multicopter unmanned aerial systems (UAS). To achieve a good accuracy in both, average and fluctuating parts of the wind components, calibrated motor thrust and measured accelerations by the UAS are used. In a validation campaign, in comparison to sonic anemometers on a 99-m mast, accuracies below 0.2 m s-1 are achieved for the mean wind components and below 0.2 m2 s-2 for their variances. The spectra of variances and covariances show good agreement with the sonic anemometer up to 1 Hz temporal resolution. A case study of continuous measurements in a morning transition of a convective boundary layer with five UAS illustrates the potential of such measurements for ABL research.

Journal article(s) based on this preprint

27 Sep 2022
Towards vertical wind and turbulent flux estimation with multicopter uncrewed aircraft systems
Norman Wildmann and Tamino Wetz
Atmos. Meas. Tech., 15, 5465–5477, https://doi.org/10.5194/amt-15-5465-2022,https://doi.org/10.5194/amt-15-5465-2022, 2022
Short summary

Norman Wildmann and Tamino Wetz

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Norman Wildmann on behalf of the Authors (01 Aug 2022)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (18 Aug 2022) by Dominik Brunner
RR by Anonymous Referee #2 (01 Sep 2022)
RR by Anonymous Referee #1 (03 Sep 2022)
ED: Publish as is (04 Sep 2022) by Dominik Brunner

Journal article(s) based on this preprint

27 Sep 2022
Towards vertical wind and turbulent flux estimation with multicopter uncrewed aircraft systems
Norman Wildmann and Tamino Wetz
Atmos. Meas. Tech., 15, 5465–5477, https://doi.org/10.5194/amt-15-5465-2022,https://doi.org/10.5194/amt-15-5465-2022, 2022
Short summary

Norman Wildmann and Tamino Wetz

Norman Wildmann and Tamino Wetz

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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

Short summary
Multicopter unmanned aerial systems (UAS, also known as: drones) are very easy to use systems to collect data in the lowest part of the atmosphere. Wind and turbulence are parameters which are particularly important to understand the dynamics in the atmosphere. Only with three-dimensional measurements of the wind, a full understanding can be achieved. In this study, we show how even the vertical wind through the UAS can be measured with good accuracy.