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Transitions in the wintertime near-surface temperature inversion at Dome C, Antarctica. / Baas, Peter; van de Wiel, Bas J.H.; van Meijgaard, Erik; Vignon, Etienne; Genthon, Christophe; van der Linden, Steven J.A.; de Roode, Stephan R.

In: Quarterly Journal of the Royal Meteorological Society, Vol. 145, No. 720, 2019, p. 930-946.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Baas, P, van de Wiel, BJH, van Meijgaard, E, Vignon, E, Genthon, C, van der Linden, SJA & de Roode, SR 2019, 'Transitions in the wintertime near-surface temperature inversion at Dome C, Antarctica' Quarterly Journal of the Royal Meteorological Society, vol. 145, no. 720, pp. 930-946. https://doi.org/10.1002/qj.3450

APA

Baas, P., van de Wiel, B. J. H., van Meijgaard, E., Vignon, E., Genthon, C., van der Linden, S. J. A., & de Roode, S. R. (2019). Transitions in the wintertime near-surface temperature inversion at Dome C, Antarctica. Quarterly Journal of the Royal Meteorological Society, 145(720), 930-946. https://doi.org/10.1002/qj.3450

Vancouver

Baas P, van de Wiel BJH, van Meijgaard E, Vignon E, Genthon C, van der Linden SJA et al. Transitions in the wintertime near-surface temperature inversion at Dome C, Antarctica. Quarterly Journal of the Royal Meteorological Society. 2019;145(720):930-946. https://doi.org/10.1002/qj.3450

Author

Baas, Peter ; van de Wiel, Bas J.H. ; van Meijgaard, Erik ; Vignon, Etienne ; Genthon, Christophe ; van der Linden, Steven J.A. ; de Roode, Stephan R. / Transitions in the wintertime near-surface temperature inversion at Dome C, Antarctica. In: Quarterly Journal of the Royal Meteorological Society. 2019 ; Vol. 145, No. 720. pp. 930-946.

BibTeX

@article{57303df6f894426d8e9c5ee4daff65a5,
title = "Transitions in the wintertime near-surface temperature inversion at Dome C, Antarctica",
abstract = "In this work we study the dynamics of the surface-based temperature inversion over the Antarctic Plateau during the polar winter. Using 6 years of observations from the French–Italian Antarctic station Concordia at Dome C, we investigate sudden regime transitions in the strength of the near-surface temperature inversion. Here we define “near-surface” as being within the domain of the 45-m measuring tower. In particular, we consider the strongly nonlinear relation between the 10-m inversion strength (T 10m – T s ) and the 10-m wind speed. To this end, all individual events for which the 10-m inversion strength increases or decreases continuously by more than 15 K in time are considered. Composite time series and vertical profiles of wind and temperature reveal specific characteristics of the transition from weak to very strong inversions and vice versa. In contrast to midlatitudes, the largest variations in temperature are not found at the surface but at a height of 10 m. A similar analysis was performed on results from an atmospheric single-column model (SCM). Overall, the SCM results reproduce the observed characteristics of the transitions in the near-surface inversion remarkably well. Using model output, the underlying mechanisms of the regime transitions are identified. The nonlinear relation between inversion strength and wind speed at a given level is explained by variations in the geostrophic wind speed, changes in the depth of the turbulent layer and the vertical divergence of turbulent fluxes. Moreover, the transitions between different boundary layer regimes cannot be explained without considering the contribution of subsidence heating.",
keywords = "Antarctic atmosphere, observational data analysis, regime transition, single-column model, stable boundary layer",
author = "Peter Baas and {van de Wiel}, {Bas J.H.} and {van Meijgaard}, Erik and Etienne Vignon and Christophe Genthon and {van der Linden}, {Steven J.A.} and {de Roode}, {Stephan R.}",
year = "2019",
doi = "10.1002/qj.3450",
language = "English",
volume = "145",
pages = "930--946",
journal = "Royal Meteorological Society. Quarterly Journal (online)",
issn = "1477-870X",
publisher = "Wiley-Blackwell",
number = "720",

}

RIS

TY - JOUR

T1 - Transitions in the wintertime near-surface temperature inversion at Dome C, Antarctica

AU - Baas, Peter

AU - van de Wiel, Bas J.H.

AU - van Meijgaard, Erik

AU - Vignon, Etienne

AU - Genthon, Christophe

AU - van der Linden, Steven J.A.

AU - de Roode, Stephan R.

PY - 2019

Y1 - 2019

N2 - In this work we study the dynamics of the surface-based temperature inversion over the Antarctic Plateau during the polar winter. Using 6 years of observations from the French–Italian Antarctic station Concordia at Dome C, we investigate sudden regime transitions in the strength of the near-surface temperature inversion. Here we define “near-surface” as being within the domain of the 45-m measuring tower. In particular, we consider the strongly nonlinear relation between the 10-m inversion strength (T 10m – T s ) and the 10-m wind speed. To this end, all individual events for which the 10-m inversion strength increases or decreases continuously by more than 15 K in time are considered. Composite time series and vertical profiles of wind and temperature reveal specific characteristics of the transition from weak to very strong inversions and vice versa. In contrast to midlatitudes, the largest variations in temperature are not found at the surface but at a height of 10 m. A similar analysis was performed on results from an atmospheric single-column model (SCM). Overall, the SCM results reproduce the observed characteristics of the transitions in the near-surface inversion remarkably well. Using model output, the underlying mechanisms of the regime transitions are identified. The nonlinear relation between inversion strength and wind speed at a given level is explained by variations in the geostrophic wind speed, changes in the depth of the turbulent layer and the vertical divergence of turbulent fluxes. Moreover, the transitions between different boundary layer regimes cannot be explained without considering the contribution of subsidence heating.

AB - In this work we study the dynamics of the surface-based temperature inversion over the Antarctic Plateau during the polar winter. Using 6 years of observations from the French–Italian Antarctic station Concordia at Dome C, we investigate sudden regime transitions in the strength of the near-surface temperature inversion. Here we define “near-surface” as being within the domain of the 45-m measuring tower. In particular, we consider the strongly nonlinear relation between the 10-m inversion strength (T 10m – T s ) and the 10-m wind speed. To this end, all individual events for which the 10-m inversion strength increases or decreases continuously by more than 15 K in time are considered. Composite time series and vertical profiles of wind and temperature reveal specific characteristics of the transition from weak to very strong inversions and vice versa. In contrast to midlatitudes, the largest variations in temperature are not found at the surface but at a height of 10 m. A similar analysis was performed on results from an atmospheric single-column model (SCM). Overall, the SCM results reproduce the observed characteristics of the transitions in the near-surface inversion remarkably well. Using model output, the underlying mechanisms of the regime transitions are identified. The nonlinear relation between inversion strength and wind speed at a given level is explained by variations in the geostrophic wind speed, changes in the depth of the turbulent layer and the vertical divergence of turbulent fluxes. Moreover, the transitions between different boundary layer regimes cannot be explained without considering the contribution of subsidence heating.

KW - Antarctic atmosphere

KW - observational data analysis

KW - regime transition

KW - single-column model

KW - stable boundary layer

UR - http://www.scopus.com/inward/record.url?scp=85062701307&partnerID=8YFLogxK

U2 - 10.1002/qj.3450

DO - 10.1002/qj.3450

M3 - Article

VL - 145

SP - 930

EP - 946

JO - Royal Meteorological Society. Quarterly Journal (online)

T2 - Royal Meteorological Society. Quarterly Journal (online)

JF - Royal Meteorological Society. Quarterly Journal (online)

SN - 1477-870X

IS - 720

ER -

ID: 52213967