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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ftepunivpsaclay:oai:HAL:hal-04241735v1 2023-11-12T04:08:24+01:00 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)-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) 2023-10-13 https://hal.science/hal-04241735 https://doi.org/10.5194/essd-2023-301 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/essd-2023-301 hal-04241735 https://hal.science/hal-04241735 doi:10.5194/essd-2023-301 https://hal.science/hal-04241735 2023 [SDE]Environmental Sciences info:eu-repo/semantics/preprint Preprints, Working Papers, . 2023 ftepunivpsaclay https://doi.org/10.5194/essd-2023-301 2023-10-18T16:14:23Z 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 École Polytechnique, Université Paris-Saclay: HAL Dumont d'Urville ENVELOPE(140.017,140.017,-66.667,-66.667) Dumont d'Urville Station ENVELOPE(140.000,140.000,-66.667,-66.667) Dumont d’Urville ENVELOPE(140.000,140.000,-66.667,-66.667) Dumont-d'Urville ENVELOPE(140.013,140.013,-66.667,-66.667) East Antarctica |
institution |
Open Polar |
collection |
École Polytechnique, Université Paris-Saclay: HAL |
op_collection_id |
ftepunivpsaclay |
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)-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-04241735 https://doi.org/10.5194/essd-2023-301 |
long_lat |
ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(140.000,140.000,-66.667,-66.667) ENVELOPE(140.000,140.000,-66.667,-66.667) ENVELOPE(140.013,140.013,-66.667,-66.667) |
geographic |
Dumont d'Urville Dumont d'Urville Station Dumont d’Urville Dumont-d'Urville East Antarctica |
geographic_facet |
Dumont d'Urville Dumont d'Urville Station Dumont d’Urville Dumont-d'Urville East Antarctica |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_source |
https://hal.science/hal-04241735 2023 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/essd-2023-301 hal-04241735 https://hal.science/hal-04241735 doi:10.5194/essd-2023-301 |
op_doi |
https://doi.org/10.5194/essd-2023-301 |
_version_ |
1782328705142489088 |