A microbolometer-based far infrared radiometer to study thin ice clouds in the Arctic
International audience A far infrared radiometer (FIRR) dedicated to measuring radiation emitted by clear and cloudy atmospheres was developed in the framework of the Thin Ice Clouds in Far InfraRed Experiment (TICFIRE) technology demonstration satellite project. The FIRR detector is an array of 80×...
Published in: | Atmospheric Measurement Techniques |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.archives-ouvertes.fr/hal-03187143 https://hal.archives-ouvertes.fr/hal-03187143/document https://hal.archives-ouvertes.fr/hal-03187143/file/Libois2016_FIRR.pdf https://doi.org/10.5194/amt-9-1817-2016 |
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ftccsdartic:oai:HAL:hal-03187143v1 2023-05-15T15:15:39+02:00 A microbolometer-based far infrared radiometer to study thin ice clouds in the Arctic Libois, Quentin Proulx, Christian Ivanescu, Liviu Coursol, Laurence Pelletier, Ludovick, Bouzid, Yacine Barbero, Francesco Girard, Éric Blanchet, Jean-Pierre Centre ESCER Université du Québec à Montréal = University of Québec in Montréal (UQAM) 2016 https://hal.archives-ouvertes.fr/hal-03187143 https://hal.archives-ouvertes.fr/hal-03187143/document https://hal.archives-ouvertes.fr/hal-03187143/file/Libois2016_FIRR.pdf https://doi.org/10.5194/amt-9-1817-2016 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/amt-9-1817-2016 hal-03187143 https://hal.archives-ouvertes.fr/hal-03187143 https://hal.archives-ouvertes.fr/hal-03187143/document https://hal.archives-ouvertes.fr/hal-03187143/file/Libois2016_FIRR.pdf doi:10.5194/amt-9-1817-2016 info:eu-repo/semantics/OpenAccess ISSN: 1867-1381 EISSN: 1867-8548 Atmospheric Measurement Techniques https://hal.archives-ouvertes.fr/hal-03187143 Atmospheric Measurement Techniques, European Geosciences Union, 2016, 9 (4), pp.1817 - 1832. ⟨10.5194/amt-9-1817-2016⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] info:eu-repo/semantics/article Journal articles 2016 ftccsdartic https://doi.org/10.5194/amt-9-1817-2016 2021-04-03T22:21:45Z International audience A far infrared radiometer (FIRR) dedicated to measuring radiation emitted by clear and cloudy atmospheres was developed in the framework of the Thin Ice Clouds in Far InfraRed Experiment (TICFIRE) technology demonstration satellite project. The FIRR detector is an array of 80×60 uncooled microbolometers coated with gold black to enhance the absorptivity and responsivity. A filter wheel is used to select atmospheric radiation in nine spectral bands ranging from 8 to 50 µm. Calibrated radiances are obtained using two well-calibrated blackbodies. Images are acquired at a frame rate of 120 Hz, and temporally averaged to reduce electronic noise. A complete measurement sequence takes about 120 s. With a field of view of 6 • , the FIRR is not intended to be an imager. Hence spatial average is computed over 193 illuminated pixels to increase the signal-to-noise ratio and consequently the detector resolution. This results in an improvement by a factor of 5 compared to individual pixel measurements. Another threefold increase in resolution is obtained using 193 non-illuminated pixels to remove correlated electronic noise, leading an overall resolution of approximately 0.015 W m −2 sr −1. Laboratory measurements performed on well-known targets suggest an absolute accuracy close to 0.02 W m −2 sr −1 , which ensures atmospheric radiance is retrieved with an accuracy better than 1 %. Preliminary in situ experiments performed from the ground in winter and in summer on clear and cloudy atmospheres are compared to radiative transfer simulations. They point out the FIRR ability to detect clouds and changes in relative humidity of a few percent in various atmospheric conditions, paving the way for the development of new algorithms dedicated to ice cloud characterization and water vapor retrieval. Article in Journal/Newspaper Arctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Atmospheric Measurement Techniques 9 4 1817 1832 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] Libois, Quentin Proulx, Christian Ivanescu, Liviu Coursol, Laurence Pelletier, Ludovick, Bouzid, Yacine Barbero, Francesco Girard, Éric Blanchet, Jean-Pierre A microbolometer-based far infrared radiometer to study thin ice clouds in the Arctic |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] |
description |
International audience A far infrared radiometer (FIRR) dedicated to measuring radiation emitted by clear and cloudy atmospheres was developed in the framework of the Thin Ice Clouds in Far InfraRed Experiment (TICFIRE) technology demonstration satellite project. The FIRR detector is an array of 80×60 uncooled microbolometers coated with gold black to enhance the absorptivity and responsivity. A filter wheel is used to select atmospheric radiation in nine spectral bands ranging from 8 to 50 µm. Calibrated radiances are obtained using two well-calibrated blackbodies. Images are acquired at a frame rate of 120 Hz, and temporally averaged to reduce electronic noise. A complete measurement sequence takes about 120 s. With a field of view of 6 • , the FIRR is not intended to be an imager. Hence spatial average is computed over 193 illuminated pixels to increase the signal-to-noise ratio and consequently the detector resolution. This results in an improvement by a factor of 5 compared to individual pixel measurements. Another threefold increase in resolution is obtained using 193 non-illuminated pixels to remove correlated electronic noise, leading an overall resolution of approximately 0.015 W m −2 sr −1. Laboratory measurements performed on well-known targets suggest an absolute accuracy close to 0.02 W m −2 sr −1 , which ensures atmospheric radiance is retrieved with an accuracy better than 1 %. Preliminary in situ experiments performed from the ground in winter and in summer on clear and cloudy atmospheres are compared to radiative transfer simulations. They point out the FIRR ability to detect clouds and changes in relative humidity of a few percent in various atmospheric conditions, paving the way for the development of new algorithms dedicated to ice cloud characterization and water vapor retrieval. |
author2 |
Centre ESCER Université du Québec à Montréal = University of Québec in Montréal (UQAM) |
format |
Article in Journal/Newspaper |
author |
Libois, Quentin Proulx, Christian Ivanescu, Liviu Coursol, Laurence Pelletier, Ludovick, Bouzid, Yacine Barbero, Francesco Girard, Éric Blanchet, Jean-Pierre |
author_facet |
Libois, Quentin Proulx, Christian Ivanescu, Liviu Coursol, Laurence Pelletier, Ludovick, Bouzid, Yacine Barbero, Francesco Girard, Éric Blanchet, Jean-Pierre |
author_sort |
Libois, Quentin |
title |
A microbolometer-based far infrared radiometer to study thin ice clouds in the Arctic |
title_short |
A microbolometer-based far infrared radiometer to study thin ice clouds in the Arctic |
title_full |
A microbolometer-based far infrared radiometer to study thin ice clouds in the Arctic |
title_fullStr |
A microbolometer-based far infrared radiometer to study thin ice clouds in the Arctic |
title_full_unstemmed |
A microbolometer-based far infrared radiometer to study thin ice clouds in the Arctic |
title_sort |
microbolometer-based far infrared radiometer to study thin ice clouds in the arctic |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.archives-ouvertes.fr/hal-03187143 https://hal.archives-ouvertes.fr/hal-03187143/document https://hal.archives-ouvertes.fr/hal-03187143/file/Libois2016_FIRR.pdf https://doi.org/10.5194/amt-9-1817-2016 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 1867-1381 EISSN: 1867-8548 Atmospheric Measurement Techniques https://hal.archives-ouvertes.fr/hal-03187143 Atmospheric Measurement Techniques, European Geosciences Union, 2016, 9 (4), pp.1817 - 1832. ⟨10.5194/amt-9-1817-2016⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/amt-9-1817-2016 hal-03187143 https://hal.archives-ouvertes.fr/hal-03187143 https://hal.archives-ouvertes.fr/hal-03187143/document https://hal.archives-ouvertes.fr/hal-03187143/file/Libois2016_FIRR.pdf doi:10.5194/amt-9-1817-2016 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/amt-9-1817-2016 |
container_title |
Atmospheric Measurement Techniques |
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9 |
container_issue |
4 |
container_start_page |
1817 |
op_container_end_page |
1832 |
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1766346014229266432 |