Ice Sheet and Sea Ice Ultrawideband Microwave radiometric Airborne eXperiment (ISSIUMAX) in Antarctica: first results from Terra Nova Bay
<p>An airborne microwave wide-band radiometer (500–2000 MHz) was operated for the first time in Antarctica to better understand the emission properties of sea ice, outlet glaciers and the interior ice sheet from Terra Nova Bay to Dome C. The different glaciological regimes were revealed to exh...
| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2023-01-01
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| Series: | The Cryosphere |
| Online Access: | https://tc.copernicus.org/articles/17/255/2023/tc-17-255-2023.pdf |
| _version_ | 1797946909451616256 |
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| author | M. Brogioni M. J. Andrews S. Urbini K. C. Jezek J. T. Johnson M. Leduc-Leballeur G. Macelloni S. F. Ackley A. Bringer L. Brucker O. Demir G. Fontanelli C. Yardim L. Kaleschke F. Montomoli L. Tsang S. Becagli M. Frezzotti |
| author_facet | M. Brogioni M. J. Andrews S. Urbini K. C. Jezek J. T. Johnson M. Leduc-Leballeur G. Macelloni S. F. Ackley A. Bringer L. Brucker O. Demir G. Fontanelli C. Yardim L. Kaleschke F. Montomoli L. Tsang S. Becagli M. Frezzotti |
| author_sort | M. Brogioni |
| collection | DOAJ |
| description | <p>An airborne microwave wide-band radiometer (500–2000 MHz) was operated for the first time in Antarctica to better understand the emission properties of sea ice, outlet glaciers and the interior ice sheet from Terra Nova Bay to Dome C. The different glaciological regimes were revealed to exhibit unique spectral signatures in this portion of the microwave spectrum. Generally, the brightness temperatures over a vertically homogeneous ice sheet are warmest at the lowest frequencies, consistent with models that predict that those channels sensed the deeper, warmer parts of the ice sheet. Vertical heterogeneities in the ice property profiles can alter this basic interpretation of the signal. Spectra along the lengths of outlet glaciers were modulated by the deposition and erosion of snow, driven by strong katabatic winds. Similar to previous experiments in Greenland, the brightness temperatures across the frequency band were low in crevasse areas. Variations in brightness temperature were consistent with spatial changes in sea ice type identified in satellite imagery and in situ ground-penetrating radar data. The results contribute to a better understanding of the utility of microwave wide-band radiometry for cryospheric studies and also advance knowledge of the important physics underlying existing L-band radiometers operating in space.</p> |
| first_indexed | 2024-04-10T21:19:38Z |
| format | Article |
| id | doaj.art-6ae32501562c4c19a7992634f7e6f22c |
| institution | Directory Open Access Journal |
| issn | 1994-0416 1994-0424 |
| language | English |
| last_indexed | 2024-04-10T21:19:38Z |
| publishDate | 2023-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | The Cryosphere |
| spelling | doaj.art-6ae32501562c4c19a7992634f7e6f22c2023-01-20T08:42:07ZengCopernicus PublicationsThe Cryosphere1994-04161994-04242023-01-011725527810.5194/tc-17-255-2023Ice Sheet and Sea Ice Ultrawideband Microwave radiometric Airborne eXperiment (ISSIUMAX) in Antarctica: first results from Terra Nova BayM. Brogioni0M. J. Andrews1S. Urbini2K. C. Jezek3J. T. Johnson4M. Leduc-Leballeur5G. Macelloni6S. F. Ackley7A. Bringer8L. Brucker9O. Demir10G. Fontanelli11C. Yardim12L. Kaleschke13F. Montomoli14L. Tsang15S. Becagli16M. Frezzotti17“N.Carrara” Institute of Applied Physics – National Research Council, IFAC-CNR, Sesto Fiorentino, 50019, ItalyElectroscience Laboratory, The Ohio State University, Columbus, OH 43212, USAIstituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, 00143, ItalyByrd Polar and Climate Research Center, The Ohio State University, Columbus, OH 43210, USAElectroscience Laboratory, The Ohio State University, Columbus, OH 43212, USA“N.Carrara” Institute of Applied Physics – National Research Council, IFAC-CNR, Sesto Fiorentino, 50019, Italy“N.Carrara” Institute of Applied Physics – National Research Council, IFAC-CNR, Sesto Fiorentino, 50019, ItalyDepartment of Earth and Planetary Sciences, University of Texas at San Antonio, San Antonio, TX 78249, USAElectroscience Laboratory, The Ohio State University, Columbus, OH 43212, USACenter for Satellite Application and Research NOAA/NESDIS and the U.S. National Ice Center, College Park, MD 20740, USAElectroscience Laboratory, The Ohio State University, Columbus, OH 43212, USA“N.Carrara” Institute of Applied Physics – National Research Council, IFAC-CNR, Sesto Fiorentino, 50019, ItalyElectroscience Laboratory, The Ohio State University, Columbus, OH 43212, USAAlfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany“N.Carrara” Institute of Applied Physics – National Research Council, IFAC-CNR, Sesto Fiorentino, 50019, ItalyRadiation Laboratory, University of Michigan, Ann Arbor, MI 48109-2122, USA“U. Schiff” Department of Chemistry, University of Florence, Sesto Fiorentino, 50019, ItalyDepartment of Science, Università degli Studi Roma Tre, Rome, 00154, Italy<p>An airborne microwave wide-band radiometer (500–2000 MHz) was operated for the first time in Antarctica to better understand the emission properties of sea ice, outlet glaciers and the interior ice sheet from Terra Nova Bay to Dome C. The different glaciological regimes were revealed to exhibit unique spectral signatures in this portion of the microwave spectrum. Generally, the brightness temperatures over a vertically homogeneous ice sheet are warmest at the lowest frequencies, consistent with models that predict that those channels sensed the deeper, warmer parts of the ice sheet. Vertical heterogeneities in the ice property profiles can alter this basic interpretation of the signal. Spectra along the lengths of outlet glaciers were modulated by the deposition and erosion of snow, driven by strong katabatic winds. Similar to previous experiments in Greenland, the brightness temperatures across the frequency band were low in crevasse areas. Variations in brightness temperature were consistent with spatial changes in sea ice type identified in satellite imagery and in situ ground-penetrating radar data. The results contribute to a better understanding of the utility of microwave wide-band radiometry for cryospheric studies and also advance knowledge of the important physics underlying existing L-band radiometers operating in space.</p>https://tc.copernicus.org/articles/17/255/2023/tc-17-255-2023.pdf |
| spellingShingle | M. Brogioni M. J. Andrews S. Urbini K. C. Jezek J. T. Johnson M. Leduc-Leballeur G. Macelloni S. F. Ackley A. Bringer L. Brucker O. Demir G. Fontanelli C. Yardim L. Kaleschke F. Montomoli L. Tsang S. Becagli M. Frezzotti Ice Sheet and Sea Ice Ultrawideband Microwave radiometric Airborne eXperiment (ISSIUMAX) in Antarctica: first results from Terra Nova Bay The Cryosphere |
| title | Ice Sheet and Sea Ice Ultrawideband Microwave radiometric Airborne eXperiment (ISSIUMAX) in Antarctica: first results from Terra Nova Bay |
| title_full | Ice Sheet and Sea Ice Ultrawideband Microwave radiometric Airborne eXperiment (ISSIUMAX) in Antarctica: first results from Terra Nova Bay |
| title_fullStr | Ice Sheet and Sea Ice Ultrawideband Microwave radiometric Airborne eXperiment (ISSIUMAX) in Antarctica: first results from Terra Nova Bay |
| title_full_unstemmed | Ice Sheet and Sea Ice Ultrawideband Microwave radiometric Airborne eXperiment (ISSIUMAX) in Antarctica: first results from Terra Nova Bay |
| title_short | Ice Sheet and Sea Ice Ultrawideband Microwave radiometric Airborne eXperiment (ISSIUMAX) in Antarctica: first results from Terra Nova Bay |
| title_sort | ice sheet and sea ice ultrawideband microwave radiometric airborne experiment issiumax in antarctica first results from terra nova bay |
| url | https://tc.copernicus.org/articles/17/255/2023/tc-17-255-2023.pdf |
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