Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 371891
Title The effect of Surface Heterogeneity on the Temperature-Humidity Correlation and the Relative Transport Efficiency
Author(s) Moene, A.F.; Schuttemeyer, D.
Source Boundary-Layer Meteorology 129 (2008)1. - ISSN 0006-8314 - p. 99 - 113.
Department(s) Meteorology and Air Quality
Publication type Refereed Article in a scientific journal
Publication year 2008
Keyword(s) boundary-layer - pine forest - heat - fluxes - quantities - turbulence - momentum - terrain - region
Abstract We derive a conceptual model of the flow over heterogeneous terrain consisting of patches with contrasting Bowen ratios. Upward moving eddies are assumed to carry heterogeneous properties, whereas downward moving eddies carry homogeneous properties. This results in a decorrelation of temperature and humidity as the contrast between the patches increases. We show that this model is able to reproduce the relationship developed by Lamaud and Irvine (Boundary-Layer Meteorol. 120:87¿109, 2006). Some details differ from their expression but are in accordance with data obtained over African savannah. We extend the conceptual model to a combination of any scalars, not necessarily linked through the surface energy balance (as is the case for temperature and humidity). To this end we introduce a new parameter that describes the surface heterogeneity in surface fluxes. The results of the current model can be used to predict the discrepancy between similarity relationships for different scalars over heterogeneous terrain
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