Evening Transition by a River Sampled Using a Remotely-Piloted Multicopter

Measurements made with instruments aboard a remotely-piloted multicopter flying across the Weser river in Germany provide information on the thermal structure of the boundary layer over the river and adjacent land, in this case in summer for late afternoon, the evening transition and early night on...

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Bibliographic Details
Published in:Boundary-layer meteorology 2017-12, Vol.165 (3), p.535-543
Main Authors: Wrenger, B., Cuxart, J.
Format: Article
Language:English
Subjects:
Atmospheric Protection/Air Quality Control/Air Pollution
Atmospheric Sciences
Boundary layers
Density stratification
Earth and Environmental Science
Earth Sciences
Evening
Evolution
Flight
Geospatial data
Instruments
Measuring instruments
Meteorology
Notes and Comments
River banks
Riverbanks
Rivers
Stratification
Sunset
Thermal boundary layer
Thermal structure
Water sampling
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Summary:Measurements made with instruments aboard a remotely-piloted multicopter flying across the Weser river in Germany provide information on the thermal structure of the boundary layer over the river and adjacent land, in this case in summer for late afternoon, the evening transition and early night on a clear calm day. The river has a characteristic width of 100 m. The stratification over the land and river are of opposite signs at the lower levels, except during part of the evening transition. The multicopter allows to qualitatively estimate the evolution of the thermal contrast between both surfaces, showing that the river banks experience very significant daytime cooling and nocturnal warming due to river-bank circulations, with the change of sign taking place well before sunset.
ISSN:0006-8314
1573-1472
DOI:10.1007/s10546-017-0291-9