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Local characteristics of the nocturnal boundary layer in response to external pressure forcing. / van der Linden, Steven J.A.; Baas, Peter; van Hooft, J. Antoon; van Hooijdonk, Ivo G.S.; Bosveld, Fred C.; van de Wiel, Bas J.H.

In: Journal of Applied Meteorology and Climatology, Vol. 56, No. 11, 01.11.2017, p. 3035-3047.

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van der Linden, Steven J.A. ; Baas, Peter ; van Hooft, J. Antoon ; van Hooijdonk, Ivo G.S. ; Bosveld, Fred C. ; van de Wiel, Bas J.H. / Local characteristics of the nocturnal boundary layer in response to external pressure forcing. In: Journal of Applied Meteorology and Climatology. 2017 ; Vol. 56, No. 11. pp. 3035-3047.

BibTeX

@article{9977ba4d5e96472cb51df36ca5d40ca7,
title = "Local characteristics of the nocturnal boundary layer in response to external pressure forcing",
abstract = "Geostrophic wind speed data, derived from pressure observations, are used in combination with tower measurements to investigate the nocturnal stable boundary layer at Cabauw, the Netherlands. Since the geostrophic wind speed is not directly influenced by local nocturnal stability, it may be regarded as an external forcing parameter of the nocturnal stable boundary layer. This is in contrast to local parameters such as in situ wind speed, the Monin-Obukhov stability parameter (z/L), or the local Richardson number. To characterize the stable boundary layer, ensemble averages of clear-sky nights with similar geostrophic wind speeds are formed. In this manner, the mean dynamical behavior of near-surface turbulent characteristics and composite profiles of wind and temperature are systematically investigated. The classification is found to result in a gradual ordering of the diagnosed variables in terms of the geostrophic wind speed. In an ensemble sense the transition from the weakly stable to very stable boundary layer is more gradual than expected. Interestingly, for very weak geostrophic winds, turbulent activity is found to be negligibly small while the resulting boundary cooling stays finite. Realistic numerical simulations for those cases should therefore have a comprehensive description of other thermodynamic processes such as soil heat conduction and radiative transfer.",
keywords = "Boundary layer, Climatology",
author = "{van der Linden}, {Steven J.A.} and Peter Baas and {van Hooft}, {J. Antoon} and {van Hooijdonk}, {Ivo G.S.} and Bosveld, {Fred C.} and {van de Wiel}, {Bas J.H.}",
year = "2017",
month = "11",
day = "1",
doi = "10.1175/JAMC-D-17-0011.1",
language = "English",
volume = "56",
pages = "3035--3047",
journal = "Journal of Applied Meteorology and Climatology",
issn = "1558-8424",
publisher = "American Meteorological Society",
number = "11",

}

RIS

TY - JOUR

T1 - Local characteristics of the nocturnal boundary layer in response to external pressure forcing

AU - van der Linden, Steven J.A.

AU - Baas, Peter

AU - van Hooft, J. Antoon

AU - van Hooijdonk, Ivo G.S.

AU - Bosveld, Fred C.

AU - van de Wiel, Bas J.H.

PY - 2017/11/1

Y1 - 2017/11/1

N2 - Geostrophic wind speed data, derived from pressure observations, are used in combination with tower measurements to investigate the nocturnal stable boundary layer at Cabauw, the Netherlands. Since the geostrophic wind speed is not directly influenced by local nocturnal stability, it may be regarded as an external forcing parameter of the nocturnal stable boundary layer. This is in contrast to local parameters such as in situ wind speed, the Monin-Obukhov stability parameter (z/L), or the local Richardson number. To characterize the stable boundary layer, ensemble averages of clear-sky nights with similar geostrophic wind speeds are formed. In this manner, the mean dynamical behavior of near-surface turbulent characteristics and composite profiles of wind and temperature are systematically investigated. The classification is found to result in a gradual ordering of the diagnosed variables in terms of the geostrophic wind speed. In an ensemble sense the transition from the weakly stable to very stable boundary layer is more gradual than expected. Interestingly, for very weak geostrophic winds, turbulent activity is found to be negligibly small while the resulting boundary cooling stays finite. Realistic numerical simulations for those cases should therefore have a comprehensive description of other thermodynamic processes such as soil heat conduction and radiative transfer.

AB - Geostrophic wind speed data, derived from pressure observations, are used in combination with tower measurements to investigate the nocturnal stable boundary layer at Cabauw, the Netherlands. Since the geostrophic wind speed is not directly influenced by local nocturnal stability, it may be regarded as an external forcing parameter of the nocturnal stable boundary layer. This is in contrast to local parameters such as in situ wind speed, the Monin-Obukhov stability parameter (z/L), or the local Richardson number. To characterize the stable boundary layer, ensemble averages of clear-sky nights with similar geostrophic wind speeds are formed. In this manner, the mean dynamical behavior of near-surface turbulent characteristics and composite profiles of wind and temperature are systematically investigated. The classification is found to result in a gradual ordering of the diagnosed variables in terms of the geostrophic wind speed. In an ensemble sense the transition from the weakly stable to very stable boundary layer is more gradual than expected. Interestingly, for very weak geostrophic winds, turbulent activity is found to be negligibly small while the resulting boundary cooling stays finite. Realistic numerical simulations for those cases should therefore have a comprehensive description of other thermodynamic processes such as soil heat conduction and radiative transfer.

KW - Boundary layer

KW - Climatology

UR - http://resolver.tudelft.nl/uuid:9977ba4d-5e96-472c-b51d-f36ca5d40ca7

UR - http://www.scopus.com/inward/record.url?scp=85031085521&partnerID=8YFLogxK

U2 - 10.1175/JAMC-D-17-0011.1

DO - 10.1175/JAMC-D-17-0011.1

M3 - Article

VL - 56

SP - 3035

EP - 3047

JO - Journal of Applied Meteorology and Climatology

T2 - Journal of Applied Meteorology and Climatology

JF - Journal of Applied Meteorology and Climatology

SN - 1558-8424

IS - 11

ER -

ID: 36912749