Midnight Sun to Polar Night:A Model of Seasonal Light in the Barents Sea
Arctic marine ecosystems are strongly influenced by the extreme seasonality of light in the region. Accurate determination of light is essential for building a comprehensive understanding of the dynamics of animal and aquatic algae populations. Current approaches to underwater light field parameteri...
Published in: | Journal of Advances in Modeling Earth Systems |
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Language: | English |
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2022
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Online Access: | https://pure.uhi.ac.uk/en/publications/a7e63aef-c9b3-41da-a857-a873a0f0f436 https://doi.org/10.1029/2022MS003198 https://pureadmin.uhi.ac.uk/ws/files/49032296/J_Adv_Model_Earth_Syst_-_2022_-_Connan_McGinty_-_Midnight_Sun_to_Polar_Night_A_Model_of_Seasonal_Light_in_the_Barents_Sea.pdf http://www.scopus.com/inward/record.url?scp=85141730691&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85141730691&partnerID=8YFLogxK |
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ftuhipublicatio:oai:pure.atira.dk:publications/a7e63aef-c9b3-41da-a857-a873a0f0f436 2024-06-23T07:49:58+00:00 Midnight Sun to Polar Night:A Model of Seasonal Light in the Barents Sea Connan-McGinty, Stacey Banas, Neil S. Berge, Jørgen Cottier, Finlo Grant, Stephen Johnsen, Geir Kopec, Tomasz P. Porter, Marie McKee, David 2022-10-01 application/pdf https://pure.uhi.ac.uk/en/publications/a7e63aef-c9b3-41da-a857-a873a0f0f436 https://doi.org/10.1029/2022MS003198 https://pureadmin.uhi.ac.uk/ws/files/49032296/J_Adv_Model_Earth_Syst_-_2022_-_Connan_McGinty_-_Midnight_Sun_to_Polar_Night_A_Model_of_Seasonal_Light_in_the_Barents_Sea.pdf http://www.scopus.com/inward/record.url?scp=85141730691&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85141730691&partnerID=8YFLogxK eng eng https://pure.uhi.ac.uk/en/publications/a7e63aef-c9b3-41da-a857-a873a0f0f436 info:eu-repo/semantics/openAccess Connan-McGinty , S , Banas , N S , Berge , J , Cottier , F , Grant , S , Johnsen , G , Kopec , T P , Porter , M & McKee , D 2022 , ' Midnight Sun to Polar Night : A Model of Seasonal Light in the Barents Sea ' , Journal of Advances in Modeling Earth Systems , vol. 14 , no. 10 , e2022MS003198 . https://doi.org/10.1029/2022MS003198 Arctic region numerical modeling ocean optics article 2022 ftuhipublicatio https://doi.org/10.1029/2022MS003198 2024-06-03T23:48:37Z Arctic marine ecosystems are strongly influenced by the extreme seasonality of light in the region. Accurate determination of light is essential for building a comprehensive understanding of the dynamics of animal and aquatic algae populations. Current approaches to underwater light field parameterisations rely upon shortwave radiation (300–3000 nm) estimates from satellites or surface radiometry measurements to populate full radiative transfer software. Due to the inaccessibility of many regions in the Arctic, measured data is not widely available. This study presents a model of spectrally resolved underwater light in ice-free conditions in the Barents Sea. Given a location and time, the model accounts for downwelling spectral irradiance in the photosynthetically active radiation (PAR, 400–700 nm) range (E D PAR ) at the ocean surface from solar, lunar, and galactic light sources, modulated by local cloud cover. We demonstrate the ability to extend over the full year into the period of Polar Night, validated in both broadband PAR and spectral domains. Using a bio-optical model of diffuse attenuation developed for the Barents Sea, we show accurate calculations to depth for inhomogeneous water columns over a spatial-temporal range, validated against time series irradiance data from the ArcLight observatory in Ny-Ålesund, Svalbard and in-situ irradiance sensors deployed in the Barents Sea. Finally, in comparison to state-of-the-art radiative transfer models, averaged over the water column we demonstrate a typical mean absolute error of <1 μmol m −2 s −1 in E D PAR for overcast conditions (<6 μmol m −2 s −1 for clear-sky) and reduced execution time of factor 20. Article in Journal/Newspaper Arctic Barents Sea Ny Ålesund Ny-Ålesund polar night Svalbard midnight sun University of the Highlands and Islands: Research Database of UHI Arctic Barents Sea Ny-Ålesund Svalbard Journal of Advances in Modeling Earth Systems 14 10 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
Arctic region numerical modeling ocean optics |
spellingShingle |
Arctic region numerical modeling ocean optics Connan-McGinty, Stacey Banas, Neil S. Berge, Jørgen Cottier, Finlo Grant, Stephen Johnsen, Geir Kopec, Tomasz P. Porter, Marie McKee, David Midnight Sun to Polar Night:A Model of Seasonal Light in the Barents Sea |
topic_facet |
Arctic region numerical modeling ocean optics |
description |
Arctic marine ecosystems are strongly influenced by the extreme seasonality of light in the region. Accurate determination of light is essential for building a comprehensive understanding of the dynamics of animal and aquatic algae populations. Current approaches to underwater light field parameterisations rely upon shortwave radiation (300–3000 nm) estimates from satellites or surface radiometry measurements to populate full radiative transfer software. Due to the inaccessibility of many regions in the Arctic, measured data is not widely available. This study presents a model of spectrally resolved underwater light in ice-free conditions in the Barents Sea. Given a location and time, the model accounts for downwelling spectral irradiance in the photosynthetically active radiation (PAR, 400–700 nm) range (E D PAR ) at the ocean surface from solar, lunar, and galactic light sources, modulated by local cloud cover. We demonstrate the ability to extend over the full year into the period of Polar Night, validated in both broadband PAR and spectral domains. Using a bio-optical model of diffuse attenuation developed for the Barents Sea, we show accurate calculations to depth for inhomogeneous water columns over a spatial-temporal range, validated against time series irradiance data from the ArcLight observatory in Ny-Ålesund, Svalbard and in-situ irradiance sensors deployed in the Barents Sea. Finally, in comparison to state-of-the-art radiative transfer models, averaged over the water column we demonstrate a typical mean absolute error of <1 μmol m −2 s −1 in E D PAR for overcast conditions (<6 μmol m −2 s −1 for clear-sky) and reduced execution time of factor 20. |
format |
Article in Journal/Newspaper |
author |
Connan-McGinty, Stacey Banas, Neil S. Berge, Jørgen Cottier, Finlo Grant, Stephen Johnsen, Geir Kopec, Tomasz P. Porter, Marie McKee, David |
author_facet |
Connan-McGinty, Stacey Banas, Neil S. Berge, Jørgen Cottier, Finlo Grant, Stephen Johnsen, Geir Kopec, Tomasz P. Porter, Marie McKee, David |
author_sort |
Connan-McGinty, Stacey |
title |
Midnight Sun to Polar Night:A Model of Seasonal Light in the Barents Sea |
title_short |
Midnight Sun to Polar Night:A Model of Seasonal Light in the Barents Sea |
title_full |
Midnight Sun to Polar Night:A Model of Seasonal Light in the Barents Sea |
title_fullStr |
Midnight Sun to Polar Night:A Model of Seasonal Light in the Barents Sea |
title_full_unstemmed |
Midnight Sun to Polar Night:A Model of Seasonal Light in the Barents Sea |
title_sort |
midnight sun to polar night:a model of seasonal light in the barents sea |
publishDate |
2022 |
url |
https://pure.uhi.ac.uk/en/publications/a7e63aef-c9b3-41da-a857-a873a0f0f436 https://doi.org/10.1029/2022MS003198 https://pureadmin.uhi.ac.uk/ws/files/49032296/J_Adv_Model_Earth_Syst_-_2022_-_Connan_McGinty_-_Midnight_Sun_to_Polar_Night_A_Model_of_Seasonal_Light_in_the_Barents_Sea.pdf http://www.scopus.com/inward/record.url?scp=85141730691&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85141730691&partnerID=8YFLogxK |
geographic |
Arctic Barents Sea Ny-Ålesund Svalbard |
geographic_facet |
Arctic Barents Sea Ny-Ålesund Svalbard |
genre |
Arctic Barents Sea Ny Ålesund Ny-Ålesund polar night Svalbard midnight sun |
genre_facet |
Arctic Barents Sea Ny Ålesund Ny-Ålesund polar night Svalbard midnight sun |
op_source |
Connan-McGinty , S , Banas , N S , Berge , J , Cottier , F , Grant , S , Johnsen , G , Kopec , T P , Porter , M & McKee , D 2022 , ' Midnight Sun to Polar Night : A Model of Seasonal Light in the Barents Sea ' , Journal of Advances in Modeling Earth Systems , vol. 14 , no. 10 , e2022MS003198 . https://doi.org/10.1029/2022MS003198 |
op_relation |
https://pure.uhi.ac.uk/en/publications/a7e63aef-c9b3-41da-a857-a873a0f0f436 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2022MS003198 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
14 |
container_issue |
10 |
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1802640712774189056 |