Radiative fluxes in the High Arctic region derived from ground-based lidar measurements onboard drifting buoys
The Arctic is facing drastic climate changes that are not correctly represented by state-of-the-art models because of complex feedbacks between radiation, clouds and sea-ice surfaces. A better understanding of the surface energy budget requires radiative measurements that are limited in time and spa...
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ftsorbonneuniv:oai:HAL:insu-03414438v1 2024-02-11T10:00:38+01:00 Radiative fluxes in the High Arctic region derived from ground-based lidar measurements onboard drifting buoys Loyer, Lilian Raut, Jean-Christophe Di Biagio, C. Maillard, Julia Mariage, Vincent Pelon, Jacques TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) 2021 https://insu.hal.science/insu-03414438 https://insu.hal.science/insu-03414438/document https://insu.hal.science/insu-03414438/file/amt-2021-326.pdf https://doi.org/10.5194/amt-2021-326 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/amt-2021-326 insu-03414438 https://insu.hal.science/insu-03414438 https://insu.hal.science/insu-03414438/document https://insu.hal.science/insu-03414438/file/amt-2021-326.pdf doi:10.5194/amt-2021-326 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess https://insu.hal.science/insu-03414438 2021 [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/preprint Preprints, Working Papers, . 2021 ftsorbonneuniv https://doi.org/10.5194/amt-2021-326 2024-01-16T23:41:06Z The Arctic is facing drastic climate changes that are not correctly represented by state-of-the-art models because of complex feedbacks between radiation, clouds and sea-ice surfaces. A better understanding of the surface energy budget requires radiative measurements that are limited in time and space in the High Arctic (>80 • N) and mostly obtained through specific expeditions. Six years of lidar observations onboard buoys drifting in the Arctic Ocean above 83 • N have been carried out as part of the IAOOS (Ice Atmosphere arctic Ocean Operating System) project. The objective of this study is to investigate the possibility to extent the IAOOS dataset to provide estimates of the shortwave (SW) and longwave (LW) surface irradiances from lidar measurements on drifting buoys. Our approach relies on the use of the STREAMER radiative transfer model to estimate the downwelling SW scattered radiances from the background noise measured by lidar. Those radiances are then used to derive estimates of the cloud optical depths. In turn, the knowledge of the cloud optical depth enables to estimate the SW and LW (using additional IAOOS measured information) downwelling irradiances at the surface. The method was applied to the IAOOS buoy measurements in spring 2015, and retrieved cloud optical depths were compared to those derived from radiative irradiances measured during the NICE (Norwegian Young Sea Ice Experiment) campaign at the meteorological station, in the vicinity of the drifting buoys. Retrieved and measured SW and LW irradiances were then compared. Results showed overall good agreement. Cloud optical depths were estimated with a rather large dispersion of about 47 %. LW irradiances showed a fairly small dispersion (within 5 W m −2), with a corrigible residual bias (3 W m −2). The estimated uncertainty of the SW irradiances was 4%. But, as for the cloud optical depth, the SW irradiances showed the occurrence of a few outliers, that may be due to a short lidar sequence acquisition time (no more than four times 10 mn ... Report Arctic Arctic Ocean Sea ice HAL Sorbonne Université Arctic Arctic Ocean |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Loyer, Lilian Raut, Jean-Christophe Di Biagio, C. Maillard, Julia Mariage, Vincent Pelon, Jacques Radiative fluxes in the High Arctic region derived from ground-based lidar measurements onboard drifting buoys |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
The Arctic is facing drastic climate changes that are not correctly represented by state-of-the-art models because of complex feedbacks between radiation, clouds and sea-ice surfaces. A better understanding of the surface energy budget requires radiative measurements that are limited in time and space in the High Arctic (>80 • N) and mostly obtained through specific expeditions. Six years of lidar observations onboard buoys drifting in the Arctic Ocean above 83 • N have been carried out as part of the IAOOS (Ice Atmosphere arctic Ocean Operating System) project. The objective of this study is to investigate the possibility to extent the IAOOS dataset to provide estimates of the shortwave (SW) and longwave (LW) surface irradiances from lidar measurements on drifting buoys. Our approach relies on the use of the STREAMER radiative transfer model to estimate the downwelling SW scattered radiances from the background noise measured by lidar. Those radiances are then used to derive estimates of the cloud optical depths. In turn, the knowledge of the cloud optical depth enables to estimate the SW and LW (using additional IAOOS measured information) downwelling irradiances at the surface. The method was applied to the IAOOS buoy measurements in spring 2015, and retrieved cloud optical depths were compared to those derived from radiative irradiances measured during the NICE (Norwegian Young Sea Ice Experiment) campaign at the meteorological station, in the vicinity of the drifting buoys. Retrieved and measured SW and LW irradiances were then compared. Results showed overall good agreement. Cloud optical depths were estimated with a rather large dispersion of about 47 %. LW irradiances showed a fairly small dispersion (within 5 W m −2), with a corrigible residual bias (3 W m −2). The estimated uncertainty of the SW irradiances was 4%. But, as for the cloud optical depth, the SW irradiances showed the occurrence of a few outliers, that may be due to a short lidar sequence acquisition time (no more than four times 10 mn ... |
author2 |
TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) |
format |
Report |
author |
Loyer, Lilian Raut, Jean-Christophe Di Biagio, C. Maillard, Julia Mariage, Vincent Pelon, Jacques |
author_facet |
Loyer, Lilian Raut, Jean-Christophe Di Biagio, C. Maillard, Julia Mariage, Vincent Pelon, Jacques |
author_sort |
Loyer, Lilian |
title |
Radiative fluxes in the High Arctic region derived from ground-based lidar measurements onboard drifting buoys |
title_short |
Radiative fluxes in the High Arctic region derived from ground-based lidar measurements onboard drifting buoys |
title_full |
Radiative fluxes in the High Arctic region derived from ground-based lidar measurements onboard drifting buoys |
title_fullStr |
Radiative fluxes in the High Arctic region derived from ground-based lidar measurements onboard drifting buoys |
title_full_unstemmed |
Radiative fluxes in the High Arctic region derived from ground-based lidar measurements onboard drifting buoys |
title_sort |
radiative fluxes in the high arctic region derived from ground-based lidar measurements onboard drifting buoys |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://insu.hal.science/insu-03414438 https://insu.hal.science/insu-03414438/document https://insu.hal.science/insu-03414438/file/amt-2021-326.pdf https://doi.org/10.5194/amt-2021-326 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Ocean Sea ice |
op_source |
https://insu.hal.science/insu-03414438 2021 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/amt-2021-326 insu-03414438 https://insu.hal.science/insu-03414438 https://insu.hal.science/insu-03414438/document https://insu.hal.science/insu-03414438/file/amt-2021-326.pdf doi:10.5194/amt-2021-326 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/amt-2021-326 |
_version_ |
1790596338330632192 |