Italian Antarctic Data Center
SNOW/ICE
Type of resources
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Emerging COntaminants in Antarctic Snow: sources and TRAnsport (ECO AS:TRA) Prog. PNRA18_00229 Snow samples
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The Concordia Research Station provides a unique location for preparatory activities for future human journey to Mars, to explore microbial diversity at subzero temperatures and monitor the dissemination of human-associated microorganisms within the pristine surrounding environment. The present study was performed in the frame of the BacFinder project (European Space Agency, ESA AO-13-Concordia) with the aim to unravel the environmental- and human-associated microbial diversity in the surrounding of the Concordia Station. This is the first intensive and extensive surface snow sampling performed monthly over a two-year period at three distances (10, 500, and 1000 m) from the Concordia Station, and investigated by a high-throughput sequencing approach. Emphasis was laid on the relation between microbial presence and both seasonality and distance from the Base. Data suggested that if present the anthropogenic impact was below the detection limit of the employed DNA sequencing-based techniques. On the other hand, our study corroborated the use of DNA sequencing for revealing microbial presence in remote and hostile environments, with implications for Planetary Protections and for life-detection in astrobiology relevant targets.
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The dataset contains 500-2000 MHz brightness temperature measurements gathered by the Ultra-Wideband Software Defined Microwave Radiometer (UWBRAD) during the Ice Sheet and Sea Ice Airborne Microwave eXperiment (ISSIUMAX) in Terra Nova Bay, Antarctica. The published dataset is in ascii format and consists of geolocated nadiral brightness temperature measurements collected over 12 sub-bands whose central frequencies are 560, 660, 820, 900, 1180, 1240, 1370, 1500, 1630, 1740, 1860, and 1950 MHz. Only measurements with a viewing angle within 5 deg with respect to nadir are reported.
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The IPICS-2kyr-Italia project, through multiple perforations in the Antarctic ice sheet, aims to provide new data on climatic variability over the last 2000 years. The ice caps are natural archives of the Earth's climatic and environmental history. The extraction of snow and ice cores have taken place during the summer Antarctic campaign (November 2013 - January 2014). The drilling site GV7 (70°41'S, 158°52'E; 1950 m), was chosen for the high snow accumulation and was located about 500 km from Mario Zucchelli Station.
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Disdrometric data from a Thies Clima 3D Stereo with 22 size classes and 20 velocity classes positioned at L'Aquila (Italy, 42.3831 N, 13.3148 E, 683 m a.s.l.), with monthly spectra and ancillary information.
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Disdrometric data from an OTT Parsivel with 32 size classes and 32 velocity classes positioned at Mario Zucchelli Station (Antarctica), with monthly spectra and particle size distributions (PSD).
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Core samples of the drilling site GV7 are studied by chemical, isotopic and physical analyses of the dust and gases contained in the ice. It will thus be possible to reconstruct the evolution of temperatures, the composition of the atmosphere and atmospheric circulation, the frequency of volcanic eruptions and the air pollution produced by human activities over the last millennium with considerable temporal detail. Analysis: isotopic composition, oxygen and hydrogen content (UniVe and UniPR); tephra (ENEA); wind power (UniMib); trace metals (CNR); ion content chemistry (UniFi).
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The IPICS-2kyr-Italia project, through multiple perforations in the Antarctic ice sheet, aims to provide new data on climatic variability over the last 2000 years. The ice caps of the polar caps are valuable natural archives of the Earth's climatic and environmental history. The extraction of the snow and ice cores have taken place during the summer campaign of the Italian expedition to Antarctica 2013/2014. The drilling site GV7 (70°41'S, 158°52'E; 1950 m), chosen for the high snow accumulation, is about 500 km from Mario Zucchelli Station. Drill up to 250 - 500m. Core samples will be studied by chemical, isotopic and physical analyses of the dust and gases contained in the ice. It will thus be possible to reconstruct the evolution of temperatures, the composition of the atmosphere and atmospheric circulation, the frequency of volcanic eruptions and the air pollution produced by human activities over the last millennium with considerable temporal detail.
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Vertical profiles along the first kilometre of atmosphere above the ground (from 105 to 1050 m a.g.l.) of equivalent radar reflectivity factor (Ze), Doppler velocity (W) and Doppler spectral width (Sw) from a 24-GHz vertically pointing Micro Rain Radar MRR-2 by METEK GmbH positioned at Mario Zucchelli Station (Antarctica).
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The aim of the MAss LOst in wind fluX (MALOX) project is to better understand the phenomenon of snow transport over a coastal area characterized by strong winds. MALOX relies on a multi-disciplinary approach based on both in situ and remote sensing measurements. Satellite data (MODIS, CALIPSO) analysis will provide spatial and vertical extension of the transport phenomenon. In situ microphysical, thermodynamic, and radiative observations will be aimed at determining the surface and column integrated water content, and characterizing the wind flux at local scale during the summer. Observations will be carried out also during the winter period to observe stronger transport events and to create a complete dataset which will provide a qualitative estimate of the mass loss due to blowing snow sublimation through the difference between the water content measured at two sites along the main wind path on steep slopes, one upstream of the convergence zone of the katabatic flux (Larsen Glacier, LS, 74°57'S 161°46'E) and the other downstream, near the coast (Inexpressible Island, InS, 74°56’S 163°41’E).