Journal cover Journal topic
The Cryosphere An interactive open-access journal of the European Geosciences Union
doi:10.5194/tc-2017-18
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
23 Feb 2017
Review status
This discussion paper is under review for the journal The Cryosphere (TC).
Measurements of precipitation in Dumont d'Urville, Terre Adélie, East Antarctica
Jacopo Grazioli1, Christophe Genthon2, Brice Boudevillain3, Claudio Duran-Alarcon3, Massimo Del Guasta3, Jean-Baptiste Madeleine4,5, and Alexis Berne1 1Environmental Remote Sensing Laboratory (LTE), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
2Univ. Grenoble Alpes, CNRS, IGE, F-38000 Grenoble, France
3Istituto nazionale di Ottica, INO-CNR, Italy
4CNRS, UMR 8539, Laboratoire de Météorologie Dynamique (LMD), IPSL Climate Modeling Center, Paris, France
5Sorbonne Universités, UPMC Univ Paris 06, UMR 8539, Laboratoire de Météorologie Dynamique (IPSL), Paris, France
Abstract. The first results of a campaign of intensive observation of precipitation in Dumont d'Urville, Antarctica, are presented. Several instruments collected data from October 2015, including a polarimetric weather radar (MXPol), a Micro Rain Radar (MRR), a weighing gauge (Pluvio2), and a Multi-Angle Snowflake Camera (MASC). These instruments collected the first model-free measurements of precipitation in the region in the region of Terre Adélie (Adélie Land), including of precipitation microphysics. Microphysical observations during the austral summer 2015/2016 showed that, close to ground level, aggregates are the dominant hydrometeor type, together with small ice particles (mostly originating from blowing snow), and that riming often occurs. Contamination of the Pluvio2 measurements in windy conditions is observed and partly removed through synergistic use of MRR data. The yearly accumulated precipitation of snow (300 m above ground), obtained by means of a local conversion relation of MRR data, trained on the Pluvio2 measurement of the summer period, is estimated to be 815 mm of water equivalent, with a confidence interval ranging between 739.5 to 989 mm. Climatological data obtained from satellite-borne radars, and the ERA-Interim reanalysis of the European Center for Medium-Range Weather Forecasts (ECMWF) both provide lower yearly totals: 655 mm for ERA-Interim, while 679 mm for the climatological data over DDU. ERA-Interim seems to overestimate the occurrence of low-intensity precipitation events especially in summer, while visual observations conducted at the research stations all year long seem to underestimate it. Overall, this manuscript provides insightful examples of the added values of precipitation monitoring in Antarctica with a synergistic use of in-situ and remote sensing measurements.

Citation: Grazioli, J., Genthon, C., Boudevillain, B., Duran-Alarcon, C., Del Guasta, M., Madeleine, J.-B., and Berne, A.: Measurements of precipitation in Dumont d'Urville, Terre Adélie, East Antarctica, The Cryosphere Discuss., doi:10.5194/tc-2017-18, in review, 2017.
Jacopo Grazioli et al.
Jacopo Grazioli et al.
Jacopo Grazioli et al.

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Short summary
We present medium and long term measurements of precipitation in a coastal region of Antarctica. These measurements are among the first of the kind on the Antarctic continent, and combine remote sensing with in-situ observations. The benefits of this synergy are demonstrated and the lessons learned from this measurements, that are still ongoing, are very important for the creation of similar observatories elsewhere in the continent.
We present medium and long term measurements of precipitation in a coastal region of...
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