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Towards vertical wind and turbulent flux estimation with multicopter uncrewed aircraft systems

Wildmann, Norman and Wetz, Tamino (2022) Towards vertical wind and turbulent flux estimation with multicopter uncrewed aircraft systems. Atmospheric Measurement Techniques (AMT), 15 (18), pp. 5465-5477. Copernicus Publications. doi: 10.5194/amt-15-5465-2022. ISSN 1867-1381.

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Official URL: https://amt.copernicus.org/articles/15/5465/2022/


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 the typical heights of these masts, 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 uncrewed aircraft systems (UAS). To achieve a good accuracy in both average and fluctuating parts of the wind components, calibrated motor thrusts and measured accelerations by the UAS are used. In a validation campaign, in comparison to sonic anemometers on a 99 m mast, accuracies below 0:2ms−1 are achieved for the mean wind components and below 0:2m2 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.

Item URL in elib:https://elib.dlr.de/188522/
Document Type:Article
Title:Towards vertical wind and turbulent flux estimation with multicopter uncrewed aircraft systems
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Wildmann, NormanDLR, IPAhttps://orcid.org/0000-0001-9475-4206UNSPECIFIED
Date:27 September 2022
Journal or Publication Title:Atmospheric Measurement Techniques (AMT)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Page Range:pp. 5465-5477
Publisher:Copernicus Publications
Keywords:Wind, Turbulenz, Drohnen, Meteorologie
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:Photovoltaics and Wind Energy
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Wind Energy
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Transport Meteorology
Deposited By: Wildmann, Norman
Deposited On:30 Sep 2022 12:12
Last Modified:14 Oct 2022 14:22

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