Transitions in the wintertime near‐surface temperature inversion at Dome C, Antarctica
International audience 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 streng...
Published in: | Quarterly Journal of the Royal Meteorological Society |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2019
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Online Access: | https://hal.sorbonne-universite.fr/hal-02125363 https://hal.sorbonne-universite.fr/hal-02125363/document https://hal.sorbonne-universite.fr/hal-02125363/file/Baas_et_al-2019-Quarterly_Journal_of_the_Royal_Meteorological_Society.pdf https://doi.org/10.1002/qj.3450 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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English |
topic |
stable boundary layer single-column model regime transition observational data analysis Antarctic atmosphere [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
spellingShingle |
stable boundary layer single-column model regime transition observational data analysis Antarctic atmosphere [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology Baas, Peter Van de Wiel, Bas, Van Meijgaard, Erik Vignon, Etienne Genthon, Christophe Van Der Linden, Steven, De Roode, Stephan Transitions in the wintertime near‐surface temperature inversion at Dome C, Antarctica |
topic_facet |
stable boundary layer single-column model regime transition observational data analysis Antarctic atmosphere [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
description |
International audience 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 (T10m – Ts) 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. |
author2 |
Delft University of Technology (TU Delft) Royal Netherlands Meteorological Institute (KNMI) Ecole Polytechnique Fédérale de Lausanne (EPFL) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) |
format |
Article in Journal/Newspaper |
author |
Baas, Peter Van de Wiel, Bas, Van Meijgaard, Erik Vignon, Etienne Genthon, Christophe Van Der Linden, Steven, De Roode, Stephan |
author_facet |
Baas, Peter Van de Wiel, Bas, Van Meijgaard, Erik Vignon, Etienne Genthon, Christophe Van Der Linden, Steven, De Roode, Stephan |
author_sort |
Baas, Peter |
title |
Transitions in the wintertime near‐surface temperature inversion at Dome C, Antarctica |
title_short |
Transitions in the wintertime near‐surface temperature inversion at Dome C, Antarctica |
title_full |
Transitions in the wintertime near‐surface temperature inversion at Dome C, Antarctica |
title_fullStr |
Transitions in the wintertime near‐surface temperature inversion at Dome C, Antarctica |
title_full_unstemmed |
Transitions in the wintertime near‐surface temperature inversion at Dome C, Antarctica |
title_sort |
transitions in the wintertime near‐surface temperature inversion at dome c, antarctica |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.sorbonne-universite.fr/hal-02125363 https://hal.sorbonne-universite.fr/hal-02125363/document https://hal.sorbonne-universite.fr/hal-02125363/file/Baas_et_al-2019-Quarterly_Journal_of_the_Royal_Meteorological_Society.pdf https://doi.org/10.1002/qj.3450 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
ISSN: 0035-9009 EISSN: 1477-870X Quarterly Journal of the Royal Meteorological Society https://hal.sorbonne-universite.fr/hal-02125363 Quarterly Journal of the Royal Meteorological Society, Wiley, 2019, 145 (720), pp.930-946. ⟨10.1002/qj.3450⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/qj.3450 hal-02125363 https://hal.sorbonne-universite.fr/hal-02125363 https://hal.sorbonne-universite.fr/hal-02125363/document https://hal.sorbonne-universite.fr/hal-02125363/file/Baas_et_al-2019-Quarterly_Journal_of_the_Royal_Meteorological_Society.pdf doi:10.1002/qj.3450 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/qj.3450 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
145 |
container_issue |
720 |
container_start_page |
930 |
op_container_end_page |
946 |
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1766117927664222208 |
spelling |
ftccsdartic:oai:HAL:hal-02125363v1 2023-05-15T13:39:23+02:00 Transitions in the wintertime near‐surface temperature inversion at Dome C, Antarctica Baas, Peter Van de Wiel, Bas, Van Meijgaard, Erik Vignon, Etienne Genthon, Christophe Van Der Linden, Steven, De Roode, Stephan Delft University of Technology (TU Delft) Royal Netherlands Meteorological Institute (KNMI) Ecole Polytechnique Fédérale de Lausanne (EPFL) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) 2019 https://hal.sorbonne-universite.fr/hal-02125363 https://hal.sorbonne-universite.fr/hal-02125363/document https://hal.sorbonne-universite.fr/hal-02125363/file/Baas_et_al-2019-Quarterly_Journal_of_the_Royal_Meteorological_Society.pdf https://doi.org/10.1002/qj.3450 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1002/qj.3450 hal-02125363 https://hal.sorbonne-universite.fr/hal-02125363 https://hal.sorbonne-universite.fr/hal-02125363/document https://hal.sorbonne-universite.fr/hal-02125363/file/Baas_et_al-2019-Quarterly_Journal_of_the_Royal_Meteorological_Society.pdf doi:10.1002/qj.3450 info:eu-repo/semantics/OpenAccess ISSN: 0035-9009 EISSN: 1477-870X Quarterly Journal of the Royal Meteorological Society https://hal.sorbonne-universite.fr/hal-02125363 Quarterly Journal of the Royal Meteorological Society, Wiley, 2019, 145 (720), pp.930-946. ⟨10.1002/qj.3450⟩ stable boundary layer single-column model regime transition observational data analysis Antarctic atmosphere [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology info:eu-repo/semantics/article Journal articles 2019 ftccsdartic https://doi.org/10.1002/qj.3450 2021-12-05T02:11:24Z International audience 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 (T10m – Ts) 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic The Antarctic Quarterly Journal of the Royal Meteorological Society 145 720 930 946 |