A 7-year record of vertical profiles of radar measurements and precipitation estimates at Dumont d’Urville, Adélie Land, East Antarctica

Abstract. Solid precipitation measurements in Antarctica are crucial as snowfall represents the main water input term for the polar cap, and its probable increase in the coming century can mitigate sea-level rise caused by global warming. This paper presents 7 years of Micro Rain Radar (Metek MRR-2)...

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Main Authors: Wiener, Valentin, Roussel, Marie-Laure, Genthon, Christophe, Vignon, Étienne, Grazioli, Jacopo, Berne, Alexis
Other Authors: Laboratoire de Météorologie Dynamique (UMR 8539) (LMD), Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X), Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-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-PSL), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)
Format: Report
Language:English
Published: HAL CCSD 2023
Subjects:
Online Access:https://hal.science/hal-04248186
https://hal.science/hal-04248186/document
https://hal.science/hal-04248186/file/essd-2023-301.pdf
https://doi.org/10.5194/essd-2023-301
id ftsorbonneuniv:oai:HAL:hal-04248186v1
record_format openpolar
spelling ftsorbonneuniv:oai:HAL:hal-04248186v1 2024-09-15T17:43:55+00:00 A 7-year record of vertical profiles of radar measurements and precipitation estimates at Dumont d’Urville, Adélie Land, East Antarctica Wiener, Valentin Roussel, Marie-Laure Genthon, Christophe Vignon, Étienne Grazioli, Jacopo Berne, Alexis Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-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-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) 2023-10-18 https://hal.science/hal-04248186 https://hal.science/hal-04248186/document https://hal.science/hal-04248186/file/essd-2023-301.pdf https://doi.org/10.5194/essd-2023-301 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/essd-2023-301 hal-04248186 https://hal.science/hal-04248186 https://hal.science/hal-04248186/document https://hal.science/hal-04248186/file/essd-2023-301.pdf doi:10.5194/essd-2023-301 info:eu-repo/semantics/OpenAccess https://hal.science/hal-04248186 2023 [SDE]Environmental Sciences info:eu-repo/semantics/preprint Preprints, Working Papers, . 2023 ftsorbonneuniv https://doi.org/10.5194/essd-2023-301 2024-08-01T23:46:50Z Abstract. Solid precipitation measurements in Antarctica are crucial as snowfall represents the main water input term for the polar cap, and its probable increase in the coming century can mitigate sea-level rise caused by global warming. This paper presents 7 years of Micro Rain Radar (Metek MRR-2) data at the Dumont d'Urville station in coastal Adélie Land, East Antarctica. Statistics are calculated on 3 radar variables (equivalent reflectivity, mean Doppler velocity and signal-to-noise ratio) to outline the main characteristics of the radar dataset. Seasonal and interannual variabilities are also investigated, but no significant temporal trends are detected except for the seasonal mean Doppler velocity which is higher in summer and lower in winter. We then use the snowfall rate (S) data from a colocated snow-gauge to estimate the MRR precipitation profile from the radar equivalent reflectivity (Ze) through a locally derived Ze-S relation. We find the relation Ze = 43.3 S0.88. The processing method used to obtain this relation, data quality and uncertainty considerations are discussed in the manuscript. In order to give an example of application of the dataset, a brief statistical comparison of the MRR precipitation rate along the vertical with model data from the ERA5 reanalysis and the LMDZ climate model is performed, and notably shows that models underestimate heavy precipitation events. Report Antarc* Antarctica East Antarctica HAL Sorbonne Université
institution Open Polar
collection HAL Sorbonne Université
op_collection_id ftsorbonneuniv
language English
topic [SDE]Environmental Sciences
spellingShingle [SDE]Environmental Sciences
Wiener, Valentin
Roussel, Marie-Laure
Genthon, Christophe
Vignon, Étienne
Grazioli, Jacopo
Berne, Alexis
A 7-year record of vertical profiles of radar measurements and precipitation estimates at Dumont d’Urville, Adélie Land, East Antarctica
topic_facet [SDE]Environmental Sciences
description Abstract. Solid precipitation measurements in Antarctica are crucial as snowfall represents the main water input term for the polar cap, and its probable increase in the coming century can mitigate sea-level rise caused by global warming. This paper presents 7 years of Micro Rain Radar (Metek MRR-2) data at the Dumont d'Urville station in coastal Adélie Land, East Antarctica. Statistics are calculated on 3 radar variables (equivalent reflectivity, mean Doppler velocity and signal-to-noise ratio) to outline the main characteristics of the radar dataset. Seasonal and interannual variabilities are also investigated, but no significant temporal trends are detected except for the seasonal mean Doppler velocity which is higher in summer and lower in winter. We then use the snowfall rate (S) data from a colocated snow-gauge to estimate the MRR precipitation profile from the radar equivalent reflectivity (Ze) through a locally derived Ze-S relation. We find the relation Ze = 43.3 S0.88. The processing method used to obtain this relation, data quality and uncertainty considerations are discussed in the manuscript. In order to give an example of application of the dataset, a brief statistical comparison of the MRR precipitation rate along the vertical with model data from the ERA5 reanalysis and the LMDZ climate model is performed, and notably shows that models underestimate heavy precipitation events.
author2 Laboratoire de Météorologie Dynamique (UMR 8539) (LMD)
Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)
Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-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-PSL)
Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL)
Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)
format Report
author Wiener, Valentin
Roussel, Marie-Laure
Genthon, Christophe
Vignon, Étienne
Grazioli, Jacopo
Berne, Alexis
author_facet Wiener, Valentin
Roussel, Marie-Laure
Genthon, Christophe
Vignon, Étienne
Grazioli, Jacopo
Berne, Alexis
author_sort Wiener, Valentin
title A 7-year record of vertical profiles of radar measurements and precipitation estimates at Dumont d’Urville, Adélie Land, East Antarctica
title_short A 7-year record of vertical profiles of radar measurements and precipitation estimates at Dumont d’Urville, Adélie Land, East Antarctica
title_full A 7-year record of vertical profiles of radar measurements and precipitation estimates at Dumont d’Urville, Adélie Land, East Antarctica
title_fullStr A 7-year record of vertical profiles of radar measurements and precipitation estimates at Dumont d’Urville, Adélie Land, East Antarctica
title_full_unstemmed A 7-year record of vertical profiles of radar measurements and precipitation estimates at Dumont d’Urville, Adélie Land, East Antarctica
title_sort 7-year record of vertical profiles of radar measurements and precipitation estimates at dumont d’urville, adélie land, east antarctica
publisher HAL CCSD
publishDate 2023
url https://hal.science/hal-04248186
https://hal.science/hal-04248186/document
https://hal.science/hal-04248186/file/essd-2023-301.pdf
https://doi.org/10.5194/essd-2023-301
genre Antarc*
Antarctica
East Antarctica
genre_facet Antarc*
Antarctica
East Antarctica
op_source https://hal.science/hal-04248186
2023
op_relation info:eu-repo/semantics/altIdentifier/doi/10.5194/essd-2023-301
hal-04248186
https://hal.science/hal-04248186
https://hal.science/hal-04248186/document
https://hal.science/hal-04248186/file/essd-2023-301.pdf
doi:10.5194/essd-2023-301
op_rights info:eu-repo/semantics/OpenAccess
op_doi https://doi.org/10.5194/essd-2023-301
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