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@ARTICLE{Eder:172290,
author = {Eder, Fabian and Schmidt, Marius and Damian, Thomas and
Träumner, Katja and Mauder, Matthias},
title = {{M}eso-scale eddies affect near-surface turbulent exchange:
evidence from lidar and tower measurements},
journal = {Journal of applied meteorology and climatology},
volume = {54},
number = {1},
issn = {1558-8432},
address = {Boston, Mass.},
publisher = {AMS},
reportid = {FZJ-2014-05773},
pages = {189-206},
year = {2015},
abstract = {The eddy-covariance technique tends to underestimate
turbulent heat fluxes, which results in nonclosure of the
surface energy balance. This study shows experimental
evidence that mesoscale turbulent organized structures,
which are inherently not captured by the standard
eddy-covariance technique, can affect near-surface turbulent
exchange. By using a combined setup of three Doppler wind
lidars above a cropland-dominated area in Germany,
low-frequency turbulent structures were detected in the
surface layer down to a few meters above ground. In
addition, data from two micrometeorological stations in the
study area were analyzed with respect to energy balance
closure. In accordance with several previous studies, the
data confirm a strong friction velocity dependence of the
energy balance residual. At both stations, the energy
balance residual was found to be positively correlated with
the vertical moisture gradient in the lower atmospheric
boundary layer, but at only one station was it correlated
with the temperature gradient. This result indicates that
mesoscale transport probably contributes more to the latent
heat flux than to the sensible heat flux, but this
conclusion depends largely on the measurement site.
Moreover, flow distortion due to tower mountings and
measurement devices affects the energy balance closure
considerably for certain wind directions.},
cin = {IBG-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255) / TERENO - Terrestrial Environmental
Observatories (TERENO-2008) / 255 - Terrestrial Systems:
From Observation to Prediction (POF3-255) / DFG project
15232683 - TRR 32: Muster und Strukturen in
Boden-Pflanzen-Atmosphären-Systemen: Erfassung,
Modellierung und Datenassimilation (15232683)},
pid = {G:(DE-HGF)POF3-255 / G:(DE-HGF)TERENO-2008 /
G:(DE-HGF)POF3-255 / G:(GEPRIS)15232683},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000347953700013},
doi = {10.1175/JAMC-D-14-0140.1},
url = {https://juser.fz-juelich.de/record/172290},
}