Ice Sheet and Sea Ice Ultrawideband Microwave radiometric Airborne eXperiment (ISSIUMAX) in Antarctica: first results from Terra Nova Bay
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 uniq...
Published in: | The Cryosphere |
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Online Access: | http://hdl.handle.net/2122/16686 https://doi.org/10.5194/tc-17-255-2023 |
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ftingv:oai:www.earth-prints.org:2122/16686 2024-02-11T09:57:32+01:00 Ice Sheet and Sea Ice Ultrawideband Microwave radiometric Airborne eXperiment (ISSIUMAX) in Antarctica: first results from Terra Nova Bay Brogioni, Marco Andrews, Mark Urbini, Stefano Jezek, Kenneth C Johnson, Joel T Leduc-Leballeur, Marion Macelloni, Giovanni Ackley, Stephen F Bringer, Alexandra Brucker, Ludovic Demir, Oguz Fontanelli, Giacomo Yardim, Caglar Kaleschke, Lars Montomoli, Francesco Tsang, Leung Becagli, Silvia Frezzotti, Massimo #PLACEHOLDER_PARENT_METADATA_VALUE# Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia 2023 http://hdl.handle.net/2122/16686 https://doi.org/10.5194/tc-17-255-2023 en eng Egu-Copernicus The Cryosphere /17 (2023) 1994-0416 http://hdl.handle.net/2122/16686 doi:10.5194/tc-17-255-2023 open microwave wide-band radiometer Antarctica outlet glaciers ground-penetrating radar cryosphere article 2023 ftingv https://doi.org/10.5194/tc-17-255-2023 2024-01-16T23:26:25Z 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. Published 255–278 OSA2: Evoluzione climatica: effetti e loro mitigazione JCR Journal Article in Journal/Newspaper Antarc* Antarctica Greenland Ice Sheet Sea ice The Cryosphere Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Greenland Terra Nova Bay The Cryosphere 17 1 255 278 |
institution |
Open Polar |
collection |
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
op_collection_id |
ftingv |
language |
English |
topic |
microwave wide-band radiometer Antarctica outlet glaciers ground-penetrating radar cryosphere |
spellingShingle |
microwave wide-band radiometer Antarctica outlet glaciers ground-penetrating radar cryosphere Brogioni, Marco Andrews, Mark Urbini, Stefano Jezek, Kenneth C Johnson, Joel T Leduc-Leballeur, Marion Macelloni, Giovanni Ackley, Stephen F Bringer, Alexandra Brucker, Ludovic Demir, Oguz Fontanelli, Giacomo Yardim, Caglar Kaleschke, Lars Montomoli, Francesco Tsang, Leung Becagli, Silvia Frezzotti, Massimo Ice Sheet and Sea Ice Ultrawideband Microwave radiometric Airborne eXperiment (ISSIUMAX) in Antarctica: first results from Terra Nova Bay |
topic_facet |
microwave wide-band radiometer Antarctica outlet glaciers ground-penetrating radar cryosphere |
description |
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. Published 255–278 OSA2: Evoluzione climatica: effetti e loro mitigazione JCR Journal |
author2 |
#PLACEHOLDER_PARENT_METADATA_VALUE# Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia |
format |
Article in Journal/Newspaper |
author |
Brogioni, Marco Andrews, Mark Urbini, Stefano Jezek, Kenneth C Johnson, Joel T Leduc-Leballeur, Marion Macelloni, Giovanni Ackley, Stephen F Bringer, Alexandra Brucker, Ludovic Demir, Oguz Fontanelli, Giacomo Yardim, Caglar Kaleschke, Lars Montomoli, Francesco Tsang, Leung Becagli, Silvia Frezzotti, Massimo |
author_facet |
Brogioni, Marco Andrews, Mark Urbini, Stefano Jezek, Kenneth C Johnson, Joel T Leduc-Leballeur, Marion Macelloni, Giovanni Ackley, Stephen F Bringer, Alexandra Brucker, Ludovic Demir, Oguz Fontanelli, Giacomo Yardim, Caglar Kaleschke, Lars Montomoli, Francesco Tsang, Leung Becagli, Silvia Frezzotti, Massimo |
author_sort |
Brogioni, Marco |
title |
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_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_sort |
ice sheet and sea ice ultrawideband microwave radiometric airborne experiment (issiumax) in antarctica: first results from terra nova bay |
publisher |
Egu-Copernicus |
publishDate |
2023 |
url |
http://hdl.handle.net/2122/16686 https://doi.org/10.5194/tc-17-255-2023 |
geographic |
Greenland Terra Nova Bay |
geographic_facet |
Greenland Terra Nova Bay |
genre |
Antarc* Antarctica Greenland Ice Sheet Sea ice The Cryosphere |
genre_facet |
Antarc* Antarctica Greenland Ice Sheet Sea ice The Cryosphere |
op_relation |
The Cryosphere /17 (2023) 1994-0416 http://hdl.handle.net/2122/16686 doi:10.5194/tc-17-255-2023 |
op_rights |
open |
op_doi |
https://doi.org/10.5194/tc-17-255-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
1 |
container_start_page |
255 |
op_container_end_page |
278 |
_version_ |
1790593074034900992 |