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contributor authorHorst, T. W.
contributor authorWeil, J. C.
date accessioned2017-06-09T17:39:33Z
date available2017-06-09T17:39:33Z
date copyright1994/08/01
date issued1994
identifier issn0739-0572
identifier otherams-949.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4232983
description abstractRecent model estimates of the flux footprint are used to examine the fetch requirements for accurate micro-meteorological measurement of surface fluxes of passive, conservative scalars within the surface flux layer. The required fetch is quantified by specifying an acceptable ratio of the measured flux to the local surface flux. When normalized by the measurement height zm, the fetch is found to be a strong function of atmospheric stability as quantified by zm/L, where L is the Obukhov length, and a weaker function of the normalized measurement height zm/zo, where zo is the roughness length. Stable conditions are found to require a much greater fetch than do unstable conditions, and the fetch required for even moderately stable conditions is for many situations considerably greater than 100 times the measurement height.
publisherAmerican Meteorological Society
titleHow Far is Far Enough?: The Fetch Requirements for Micrometeorological Measurement of Surface Fluxes
typeJournal Paper
journal volume11
journal issue4
journal titleJournal of Atmospheric and Oceanic Technology
identifier doi10.1175/1520-0426(1994)011<1018:HFIFET>2.0.CO;2
journal fristpage1018
journal lastpage1025
treeJournal of Atmospheric and Oceanic Technology:;1994:;volume( 011 ):;issue: 004
contenttypeFulltext


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