{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T07:06:17Z","timestamp":1773817577279,"version":"3.50.1"},"reference-count":42,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2022,5,7]],"date-time":"2022-05-07T00:00:00Z","timestamp":1651881600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000001","name":"the National Science Foundation","doi-asserted-by":"publisher","award":["1844793"],"award-info":[{"award-number":["1844793"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Recent studies have demonstrated that wideband microwave radiometers provide significant potential for profiling important subsurface polar firn characteristics necessary to understand the dynamics of the cryosphere and predict future changes in ice and snow coverage. Different frequencies within the wide spectra of radiometers result in different electromagnetic propagation losses and thus reveal characteristics at different depths in ice and snow. This paper, expanding on those investigations, explores the utilization of the Global Precipitation Measurement (GPM) constellation as a single wideband (6.93 GHz\u201391.655 GHz) spaceborne radiometer, covering the entire microwave spectrum from C-band to W-band, to profile subsurface properties of the Antarctic firn. Results of the initial analyses over Concordia and Vostok Stations in Antarctica indicate that GPM brightness temperature measurements provide critical information regarding the subsurface temperatures and physical properties of the firn from the surface down to several meters of depth. Considering the high spatiotemporal coverage of polar-orbiting spaceborne radiometers, these results are promising for future continent-level thermal and physical characterization of the Antarctic firn.<\/jats:p>","DOI":"10.3390\/rs14092258","type":"journal-article","created":{"date-parts":[[2022,5,8]],"date-time":"2022-05-08T23:27:25Z","timestamp":1652052445000},"page":"2258","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Antarctic Firn Characterization via Wideband Microwave Radiometry"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2570-6037","authenticated-orcid":false,"given":"Rahul","family":"Kar","sequence":"first","affiliation":[{"name":"Department of Electrical and Computer Engineering, University at Albany\u2014State University of New York, Albany, NY 12222, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5452-1862","authenticated-orcid":false,"given":"Mustafa","family":"Aksoy","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, University at Albany\u2014State University of New York, Albany, NY 12222, USA"}]},{"given":"Dua","family":"Kaurejo","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, University at Albany\u2014State University of New York, Albany, NY 12222, USA"}]},{"given":"Pranjal","family":"Atrey","sequence":"additional","affiliation":[{"name":"Department of Electrical & Computer Engineering, University of Maryland, College Park, College Park, MD 20742, USA"}]},{"given":"Jerusha Ashlin","family":"Devadason","sequence":"additional","affiliation":[{"name":"The State of Utah, Salt Lake City, UT 84111, USA"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Aksoy, M., Johnson, J.T., Jezek, K.C., Durand, M., Drinkwater, M., Macelloni, G., and Tsang, L. 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