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 504382
Title Surface-Layer Similarity Functions for Dissipation Rate and Structure Parameters of Temperature and Humidity Based on Eleven Field Experiments
Author(s) Kooijmans, Linda; Hartogensis, O.K.
Source Boundary-Layer Meteorology 160 (2016)3. - ISSN 0006-8314 - p. 501 - 527.
DOI https://doi.org/10.1007/s10546-016-0152-y
Department(s) Meteorology and Air Quality
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2016
Abstract In the literature, no consensus can be found on the exact form of the universal funtions of Monin-Obukhov similarity theory (MOST) for the structure parameters of temperature, CT 2, and humidity, Cq 2, and the dissipation rate of turbulent kinetic energy, ε. By combining 11 datasets and applying data treatment with spectral data filtering and error-weighted curve-fitting we first derived robust MOST functions of CT 2,Cq 2 and ε that cover a large stability range for both unstable and stable conditions. Second, as all data were
gathered with the same instrumentation and were processed in the same way—in contrast to earlier studies—we were able to investigate the similarity of MOST functions across different datasets by defining MOST functions for all datasets individually. For CT 2 and ε we found no substantial differences in MOST functions for datasets over different surface types or moisture regimes. MOST functions of Cq 2 differ from that of CT 2, but we could not relate these differences to turbulence parameters often associated with non-local effects.
Furthermore, we showed that limited stability ranges and a limited number of data points are plausible reasons for variations of MOST functions in the literature. Last, we investigated the sensitivity of fluxes to the uncertainty of MOST functions.We provide an overview of the uncertainty range for MOST functions of CT 2,Cq 2 and ε, and suggest their use in determining the uncertainty in surface fluxes.
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