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000171811 1001_ $$0P:(DE-HGF)0$$avan de Boer, A.$$b0$$eCorresponding Author
000171811 245__ $$aEstimation of the refractive index structure parameter from single-level daytime routine weather data
000171811 260__ $$aWashington, DC$$bOptical Soc. of America$$c2014
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000171811 520__ $$aAtmospheric scintillations cause difficulties for applications where an undistorted propagation of electromagneticradiation is essential. These scintillations are related to turbulent fluctuations of temperatureand humidity that are in turn related to surface heat fluxes. We developed an approach that quantifiesthese scintillations by estimating Cn2 from surface fluxes that are derived from single-level routineweather data. In contrast to previous methods that are biased to dry and warm air, our method is directlyapplicable to several land surface types, environmental conditions, wavelengths, and measurementheights (lookup tables for a limited number of site-specific parameters are provided). The approach allowsfor an efficient evaluation of the performance of, e.g., infrared imaging systems, laser geodetic systems,and ground-to-satellite optical communication systems.We tested our approach for two grass fieldsin central and southern Europe, and for a wheat field in central Europe. Although there are uncertaintiesin the flux estimates, the impact on Cn2 is shown to be rather small. The Cn2 daytime estimates agreewell with values determined from eddy covariance measurements for the application to the three fields.However, some adjustments were needed for the approach for the grass in southern Europe becauseof non-negligible boundary-layer processes that occur in addition to surface-layer processes. © 2014Optical Society of America
000171811 536__ $$0G:(DE-HGF)POF2-246$$a246 - Modelling and Monitoring Terrestrial Systems: Methods and Technologies (POF2-246)$$cPOF2-246$$fPOF II$$x0
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000171811 536__ $$0G:(GEPRIS)139819005$$aDFG project 139819005 - Links between local scale and catchment scale measurements and modelling of gas exchange processes over land surfaces (139819005)$$c139819005$$x2
000171811 536__ $$0G:(GEPRIS)15232683$$aDFG project 15232683 - TRR 32: Muster und Strukturen in Boden-Pflanzen-Atmosphären-Systemen: Erfassung, Modellierung und Datenassimilation (15232683)$$c15232683$$x3
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000171811 7001_ $$0P:(DE-HGF)0$$aMoene, A. F.$$b1
000171811 7001_ $$0P:(DE-Juel1)129461$$aGraf, A.$$b2$$ufzj
000171811 7001_ $$0P:(DE-HGF)0$$aSimmer, C.$$b3
000171811 7001_ $$0P:(DE-HGF)0$$aHoltslag, A. A. M.$$b4
000171811 773__ $$0PERI:(DE-600)1474462-4$$a10.1364/AO.53.005944$$gVol. 53, no. 26, p. 5944 -$$n26$$p5944-5960$$tApplied optics$$v53$$x1539-4522$$y2014
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000171811 9141_ $$y2014
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