{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T12:22:34Z","timestamp":1764937354330,"version":"build-2065373602"},"reference-count":90,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2021,12,24]],"date-time":"2021-12-24T00:00:00Z","timestamp":1640304000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"PNRA-National Antarctic Research Program.","award":["APP (Antarctic Precipitation Properties)"],"award-info":[{"award-number":["APP (Antarctic Precipitation Properties)"]}]},{"name":"PNRA-National Antarctic Research Program","award":["MALOX (MAss LOst in wind fluX)"],"award-info":[{"award-number":["MALOX (MAss LOst in wind fluX)"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Snow plays a crucial role in the hydrological cycle and energy budget of the Earth, and remote sensing instruments with the necessary spatial coverage, resolution, and temporal sampling are essential for snowfall monitoring. Among such instruments, ground-radars have scanning capability and a resolution that make it possible to obtain a 3D structure of precipitating systems or vertical profiles when used in profiling mode. Radars from space have a lower spatial resolution, but they provide a global view. However, radar-based quantitative estimates of solid precipitation are still a challenge due to the variability of the microphysical, geometrical, and electrical features of snow particles. Estimations of snowfall rate are usually accomplished using empirical, long-term relationships between the equivalent radar reflectivity factor (Ze) and the liquid-equivalent snowfall rate (SR). Nevertheless, very few relationships take advantage of the direct estimation of the microphysical characteristics of snowflakes. In this work, we used a K-band vertically pointing radar collocated with a laser disdrometer to develop Ze-SR relationships as a function of snow classification. The two instruments were located at the Italian Antarctic Station Mario Zucchelli. The K-band radar probes the low-level atmospheric layers, recording power spectra at 32 vertical range gates. It was set at a high vertical resolution (35 m), with the first trusted range gate at a height of only 100 m. The disdrometer was able to provide information on the particle size distribution just below the trusted radar gate. Snow particles were classified into six categories (aggregate, dendrite aggregate, plate aggregate, pristine, dendrite pristine, plate pristine). The method was applied to the snowfall events of the Antarctic summer seasons of 2018\u20132019 and 2019\u20132020, with a total of 23,566 min of precipitation, 15.3% of which was recognized as showing aggregate features, 33.3% dendrite aggregate, 7.3% plates aggregate, 12.5% pristine, 24% dendrite pristine, and 7.6% plate pristine. Applying the appropriate Ze-SR relationship in each snow category, we calculated a total of 87 mm water equivalent, differing from the total found by applying a unique Ze-SR. Our estimates were also benchmarked against a colocated Alter-shielded weighing gauge, resulting in a difference of 3% in the analyzed periods.<\/jats:p>","DOI":"10.3390\/rs14010082","type":"journal-article","created":{"date-parts":[[2021,12,27]],"date-time":"2021-12-27T01:06:54Z","timestamp":1640567214000},"page":"82","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Quantitative Precipitation Estimation over Antarctica Using Different Ze-SR Relationships Based on Snowfall Classification Combining Ground Observations"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7047-6213","authenticated-orcid":false,"given":"Alessandro","family":"Bracci","sequence":"first","affiliation":[{"name":"National Research Council of Italy, Institute of Atmospheric Sciences and Climate (CNR-ISAC), 00133 Rome, Italy"},{"name":"Department of Physics and Astronomy \u201cAugusto Righi\u201d, Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5217-1205","authenticated-orcid":false,"given":"Luca","family":"Baldini","sequence":"additional","affiliation":[{"name":"National Research Council of Italy, Institute of Atmospheric Sciences and Climate (CNR-ISAC), 00133 Rome, Italy"}]},{"given":"Nicoletta","family":"Roberto","sequence":"additional","affiliation":[{"name":"National Research Council of Italy, Institute of Atmospheric Sciences and Climate (CNR-ISAC), 00133 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9500-5004","authenticated-orcid":false,"given":"Elisa","family":"Adirosi","sequence":"additional","affiliation":[{"name":"National Research Council of Italy, Institute of Atmospheric Sciences and Climate (CNR-ISAC), 00133 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0099-0393","authenticated-orcid":false,"given":"Mario","family":"Montopoli","sequence":"additional","affiliation":[{"name":"National Research Council of Italy, Institute of Atmospheric Sciences and Climate (CNR-ISAC), 00133 Rome, Italy"}]},{"given":"Claudio","family":"Scarchilli","sequence":"additional","affiliation":[{"name":"Laboratory for Measurements and Observations for Environment and Climate, ENEA, 00123 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9802-4972","authenticated-orcid":false,"given":"Paolo","family":"Grigioni","sequence":"additional","affiliation":[{"name":"Laboratory for Measurements and Observations for Environment and Climate, ENEA, 00123 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5527-4960","authenticated-orcid":false,"given":"Virginia","family":"Ciardini","sequence":"additional","affiliation":[{"name":"Laboratory for Measurements and Observations for Environment and Climate, ENEA, 00123 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7620-5235","authenticated-orcid":false,"given":"Vincenzo","family":"Levizzani","sequence":"additional","affiliation":[{"name":"National Research Council of Italy, Institute of Atmospheric Sciences and Climate (CNR-ISAC), 40129 Bologna, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1283-7679","authenticated-orcid":false,"given":"Federico","family":"Porc\u00f9","sequence":"additional","affiliation":[{"name":"Department of Physics and Astronomy \u201cAugusto Righi\u201d, Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"9512","DOI":"10.1002\/2015GL065497","article-title":"Importance of snow to global precipitation","volume":"42","author":"Field","year":"2015","journal-title":"Geophys. 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