The Influence of Aircraft Speed Variations on Sensible Heat-Flux Measurements by Different Airborne Systems
The Influence of Aircraft Speed Variations on Sensible Heat-Flux Measurements by Different Airborne Systems
复制标题
飞机速度变化对不同机载系统感热通量测量的影响
DOI:
10.1007/s10546-013-9853-7
复制
发表时间:
2013
影响因子:
4.3
通讯作者:
Bange J.
中科院分区:
文献类型:
--
作者:
Martin S;Bange J.
Crawford et al. (Boundary-Layer Meteorol 66:237–245, 1993) showed that the time average is inappropriate for airborne eddy-covariance flux calculations. The aircraft’s ground speed through a turbulent field is not constant. One reason can be a correlation with vertical air motion, so that some types of structures are sampled more densely than others. To avoid this, the time-sampled data are adjusted for the varying ground speed so that the modified estimates are equivalent to spatially-sampled data. A comparison of sensible heat-flux calculations using temporal and spatial averaging methods is presented and discussed. Data of the airborne measurement systems, Helipod and Dornier 128-6 are used for the analysis. These systems vary in size, weight and aerodynamic characteristics, since theis a small unmanned aerial vehicle (UAV), the Helipod a helicopter-borne turbulence probe and the Dornier 128-6 a manned research aircraft. The systematic bias anticipated in covariance computations due to speed variations was neither found when averaging over Dornier, Helipod nor UAV flight legs. However, the random differences between spatial and temporal averaging fluxes were found to be up to 30 % on the individual flight legs.
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DOI:
10.1175/2008bams2367.1
发表时间:
2008-10
期刊:
--
影响因子:
--
作者:
V. Wulfmeyer;A. Behrendt;H. Bauer;C. Kottmeier;U. Corsmeier;A. Blyth;G. Craig;U. Schumann;M. Hagen;S. Crewell;P. Girolamo;C. Flamant;M. Miller;A. Montani;S. Mobbs;E. Richard;M. Rotach;M. Arpagaus;H. Russchenberg;P. Schlüssel;M. König;V. Gärtner;R. Steinacker;M. Dorninger;D. Turner;T. Weckwerth;A. Hense;C. Simmer
通讯作者:
V. Wulfmeyer;A. Behrendt;H. Bauer;C. Kottmeier;U. Corsmeier;A. Blyth;G. Craig;U. Schumann;M. Hagen;S. Crewell;P. Girolamo;C. Flamant;M. Miller;A. Montani;S. Mobbs;E. Richard;M. Rotach;M. Arpagaus;H. Russchenberg;P. Schlüssel;M. König;V. Gärtner;R. Steinacker;M. Dorninger;D. Turner;T. Weckwerth;A. Hense;C. Simmer
影响因子:
3.4
作者:
Beyrich, F;Herzog, HJ;Neisser, J
通讯作者:
Neisser, J
影响因子:
--
作者:
J. Bange;M. Esposito;D. Lenschow;Philip R. A. Brown;Volker Dreiling;A. Giez;L. Mahrt;Szymon P. Malinowski;A. Rodi;Raymond A. Shaw;H. Siebert;H. Smit;M. Zöger
通讯作者:
M. Zöger
DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
J. Bange;R. Roth
通讯作者:
R. Roth
影响因子:
3.4
作者:
J. Bange;T. Spiess;A. J. van den Kroonenberg
通讯作者:
A. J. van den Kroonenberg