Ocean and Sea Ice Retrievals From an End‐To‐End Simulation of the Copernicus Imaging Microwave Radiometer (CIMR) 1.4–36.5 GHz Measurements
International audience The Copernicus Imaging Microwave Radiometer (CIMR) is currently being implemented by the European Space Agency (ESA) as a Copernicus Expansion Mission primarily designed to observe the Polar Regions in support of the Integrated European Policy for the Arctic. It is a conically...
Published in: | Journal of Geophysical Research: Oceans |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2021
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Subjects: | |
Online Access: | https://hal.sorbonne-universite.fr/hal-03526209 https://hal.sorbonne-universite.fr/hal-03526209/document https://hal.sorbonne-universite.fr/hal-03526209/file/JGR%20Oceans%20-%202021%20-%20Jim%20nez%20-%20Ocean%20and%20Sea%20Ice%20Retrievals%20From%20an%20End%25u2010To%25u2010End%20Simulation%20of%20the%20Copernicus%20Imaging.pdf https://doi.org/10.1029/2021jc017610 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
microwave remote sensing sea surface temperature sea ice salinity brightness temperatures polar regions [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDE.IE]Environmental Sciences/Environmental Engineering |
spellingShingle |
microwave remote sensing sea surface temperature sea ice salinity brightness temperatures polar regions [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDE.IE]Environmental Sciences/Environmental Engineering Jiménez, Carlos Tenerelli, Joseph Prigent, Catherine Kilic, Lise Lavergne, Thomas Skarpalezos, Sotirios Høyer, Jacob, L Reul, Nicolas Donlon, Craig Ocean and Sea Ice Retrievals From an End‐To‐End Simulation of the Copernicus Imaging Microwave Radiometer (CIMR) 1.4–36.5 GHz Measurements |
topic_facet |
microwave remote sensing sea surface temperature sea ice salinity brightness temperatures polar regions [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDE.IE]Environmental Sciences/Environmental Engineering |
description |
International audience The Copernicus Imaging Microwave Radiometer (CIMR) is currently being implemented by the European Space Agency (ESA) as a Copernicus Expansion Mission primarily designed to observe the Polar Regions in support of the Integrated European Policy for the Arctic. It is a conically scanning microwave radiometer with polarized channels centered at 1.414, 6.925, 10.65, 18.7, and 36.5 GHz and channel NEΔT between 0.2 and 0.7 K. A large rotating deployable mesh reflector will provide real-aperture resolutions ranging from urn:x-wiley:21699275:media:jgrc24799:jgrc24799-math-000160 (1.4 GHz) to urn:x-wiley:21699275:media:jgrc24799:jgrc24799-math-00025 km (36.5 GHz). To evaluate CIMR retrieval performance, a simplified end-to-end simulation of the mission has been carried out. The simulation includes important processes and input parameters, such as test geophysical datasets, forward models, an instrument simulator, and retrieval algorithms to derive the key mission geophysical products. The forward modeling is tested by producing Brightness Temperatures (TBs) from 4 global scenes. A comparison with current observations of the open ocean and sea ice at similar frequencies confirmed the realism of the simulations. The produced top-of-atmosphere TBs are converted to Antenna brightness Temperatures (TAs), taking into account the instrument design, and are then inverted to retrieve Sea Ice Concentration (SIC), Sea Surface Temperature (SST), and Sea Surface Salinity (SSS). Evaluating the retrieval performance showed that the simulated CIMR instrument can provide SST, SSS, and SIC measurements with precisions and spatial resolutions conforming with the mission requirements. The evaluation also highlighted the challenges of observing the Arctic environment and put in perspective CIMR capabilities compared with current instruments. |
author2 |
Estellus Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique et Atmosphères = Laboratory for Studies of Radiation and Matter in Astrophysics and Atmospheres (LERMA) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY) OceanDataLab Norwegian Meteorological Institute Oslo (MET) Danish Meteorological Institute (DMI) Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Agence Spatiale Européenne = European Space Agency (ESA) |
format |
Article in Journal/Newspaper |
author |
Jiménez, Carlos Tenerelli, Joseph Prigent, Catherine Kilic, Lise Lavergne, Thomas Skarpalezos, Sotirios Høyer, Jacob, L Reul, Nicolas Donlon, Craig |
author_facet |
Jiménez, Carlos Tenerelli, Joseph Prigent, Catherine Kilic, Lise Lavergne, Thomas Skarpalezos, Sotirios Høyer, Jacob, L Reul, Nicolas Donlon, Craig |
author_sort |
Jiménez, Carlos |
title |
Ocean and Sea Ice Retrievals From an End‐To‐End Simulation of the Copernicus Imaging Microwave Radiometer (CIMR) 1.4–36.5 GHz Measurements |
title_short |
Ocean and Sea Ice Retrievals From an End‐To‐End Simulation of the Copernicus Imaging Microwave Radiometer (CIMR) 1.4–36.5 GHz Measurements |
title_full |
Ocean and Sea Ice Retrievals From an End‐To‐End Simulation of the Copernicus Imaging Microwave Radiometer (CIMR) 1.4–36.5 GHz Measurements |
title_fullStr |
Ocean and Sea Ice Retrievals From an End‐To‐End Simulation of the Copernicus Imaging Microwave Radiometer (CIMR) 1.4–36.5 GHz Measurements |
title_full_unstemmed |
Ocean and Sea Ice Retrievals From an End‐To‐End Simulation of the Copernicus Imaging Microwave Radiometer (CIMR) 1.4–36.5 GHz Measurements |
title_sort |
ocean and sea ice retrievals from an end‐to‐end simulation of the copernicus imaging microwave radiometer (cimr) 1.4–36.5 ghz measurements |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.sorbonne-universite.fr/hal-03526209 https://hal.sorbonne-universite.fr/hal-03526209/document https://hal.sorbonne-universite.fr/hal-03526209/file/JGR%20Oceans%20-%202021%20-%20Jim%20nez%20-%20Ocean%20and%20Sea%20Ice%20Retrievals%20From%20an%20End%25u2010To%25u2010End%20Simulation%20of%20the%20Copernicus%20Imaging.pdf https://doi.org/10.1029/2021jc017610 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.sorbonne-universite.fr/hal-03526209 Journal of Geophysical Research. Oceans, 2021, 126 (12), pp.e2021JC017610. ⟨10.1029/2021jc017610⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2021jc017610 hal-03526209 https://hal.sorbonne-universite.fr/hal-03526209 https://hal.sorbonne-universite.fr/hal-03526209/document https://hal.sorbonne-universite.fr/hal-03526209/file/JGR%20Oceans%20-%202021%20-%20Jim%20nez%20-%20Ocean%20and%20Sea%20Ice%20Retrievals%20From%20an%20End%25u2010To%25u2010End%20Simulation%20of%20the%20Copernicus%20Imaging.pdf doi:10.1029/2021jc017610 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2021jc017610 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
126 |
container_issue |
12 |
_version_ |
1796305150629904384 |
spelling |
ftunivbrest:oai:HAL:hal-03526209v1 2024-04-14T08:07:45+00:00 Ocean and Sea Ice Retrievals From an End‐To‐End Simulation of the Copernicus Imaging Microwave Radiometer (CIMR) 1.4–36.5 GHz Measurements Jiménez, Carlos Tenerelli, Joseph Prigent, Catherine Kilic, Lise Lavergne, Thomas Skarpalezos, Sotirios Høyer, Jacob, L Reul, Nicolas Donlon, Craig Estellus Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique et Atmosphères = Laboratory for Studies of Radiation and Matter in Astrophysics and Atmospheres (LERMA) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY) OceanDataLab Norwegian Meteorological Institute Oslo (MET) Danish Meteorological Institute (DMI) Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Agence Spatiale Européenne = European Space Agency (ESA) 2021 https://hal.sorbonne-universite.fr/hal-03526209 https://hal.sorbonne-universite.fr/hal-03526209/document https://hal.sorbonne-universite.fr/hal-03526209/file/JGR%20Oceans%20-%202021%20-%20Jim%20nez%20-%20Ocean%20and%20Sea%20Ice%20Retrievals%20From%20an%20End%25u2010To%25u2010End%20Simulation%20of%20the%20Copernicus%20Imaging.pdf https://doi.org/10.1029/2021jc017610 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1029/2021jc017610 hal-03526209 https://hal.sorbonne-universite.fr/hal-03526209 https://hal.sorbonne-universite.fr/hal-03526209/document https://hal.sorbonne-universite.fr/hal-03526209/file/JGR%20Oceans%20-%202021%20-%20Jim%20nez%20-%20Ocean%20and%20Sea%20Ice%20Retrievals%20From%20an%20End%25u2010To%25u2010End%20Simulation%20of%20the%20Copernicus%20Imaging.pdf doi:10.1029/2021jc017610 info:eu-repo/semantics/OpenAccess ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.sorbonne-universite.fr/hal-03526209 Journal of Geophysical Research. Oceans, 2021, 126 (12), pp.e2021JC017610. ⟨10.1029/2021jc017610⟩ microwave remote sensing sea surface temperature sea ice salinity brightness temperatures polar regions [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDE.IE]Environmental Sciences/Environmental Engineering info:eu-repo/semantics/article Journal articles 2021 ftunivbrest https://doi.org/10.1029/2021jc017610 2024-03-21T16:24:19Z International audience The Copernicus Imaging Microwave Radiometer (CIMR) is currently being implemented by the European Space Agency (ESA) as a Copernicus Expansion Mission primarily designed to observe the Polar Regions in support of the Integrated European Policy for the Arctic. It is a conically scanning microwave radiometer with polarized channels centered at 1.414, 6.925, 10.65, 18.7, and 36.5 GHz and channel NEΔT between 0.2 and 0.7 K. A large rotating deployable mesh reflector will provide real-aperture resolutions ranging from urn:x-wiley:21699275:media:jgrc24799:jgrc24799-math-000160 (1.4 GHz) to urn:x-wiley:21699275:media:jgrc24799:jgrc24799-math-00025 km (36.5 GHz). To evaluate CIMR retrieval performance, a simplified end-to-end simulation of the mission has been carried out. The simulation includes important processes and input parameters, such as test geophysical datasets, forward models, an instrument simulator, and retrieval algorithms to derive the key mission geophysical products. The forward modeling is tested by producing Brightness Temperatures (TBs) from 4 global scenes. A comparison with current observations of the open ocean and sea ice at similar frequencies confirmed the realism of the simulations. The produced top-of-atmosphere TBs are converted to Antenna brightness Temperatures (TAs), taking into account the instrument design, and are then inverted to retrieve Sea Ice Concentration (SIC), Sea Surface Temperature (SST), and Sea Surface Salinity (SSS). Evaluating the retrieval performance showed that the simulated CIMR instrument can provide SST, SSS, and SIC measurements with precisions and spatial resolutions conforming with the mission requirements. The evaluation also highlighted the challenges of observing the Arctic environment and put in perspective CIMR capabilities compared with current instruments. Article in Journal/Newspaper Arctic Sea ice Université de Bretagne Occidentale: HAL Arctic Journal of Geophysical Research: Oceans 126 12 |