To what extent do sea-ice algae affect the modelled transmittance of photosynthetically active radiation (PAR) to the ice-ocean interface?
Photosynthetically active radiation (PAR) at the ice-ocean interface is critical for primary production. The value of PAR is affected by the thickness of snow and sea ice, with additional absorbers (e.g. algae) further attenuating PAR. Sea-ice algae exhibit a substantial geo-temporal variance in col...
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Cambridge University Press
2024-01-01
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| Series: | Journal of Glaciology |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S0022143024000728/type/journal_article |
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| author | Benjamin H. Redmond Roche Martin D. King |
| author_facet | Benjamin H. Redmond Roche Martin D. King |
| author_sort | Benjamin H. Redmond Roche |
| collection | DOAJ |
| description | Photosynthetically active radiation (PAR) at the ice-ocean interface is critical for primary production. The value of PAR is affected by the thickness of snow and sea ice, with additional absorbers (e.g. algae) further attenuating PAR. Sea-ice algae exhibit a substantial geo-temporal variance in column-integrated concentration (0–500 mg chl-a m−2) and are typically present within the bottom 0.01–0.2 m of sea ice. PAR transmittance is affected by algae concentrations and vertical thicknesses of ice algal layers. Small column-integrated concentrations of chl-a (~<10 mg chl-a m−2) have a negligible effect on the value of PAR transmittance, and large column-integrated concentrations of chl-a (~>10 mg chl-a m−2) can significantly reduce the value of PAR transmittance. Large column-integrated concentrations of chl-a need consideration when calculating PAR transmittance in areas of high sea-ice algae biomass (e.g. the ‘interior’ shelves of the Arctic Ocean, the Canadian Arctic and Antarctica). |
| format | Article |
| id | doaj-art-a437877eb3484b0abf7ce1fc0e588a29 |
| institution | Kabale University |
| issn | 0022-1430 1727-5652 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Journal of Glaciology |
| spelling | doaj-art-a437877eb3484b0abf7ce1fc0e588a292025-01-16T21:47:16ZengCambridge University PressJournal of Glaciology0022-14301727-56522024-01-017010.1017/jog.2024.72To what extent do sea-ice algae affect the modelled transmittance of photosynthetically active radiation (PAR) to the ice-ocean interface?Benjamin H. Redmond Roche0https://orcid.org/0000-0002-8180-6043Martin D. King1https://orcid.org/0000-0002-0089-7693Centre of Climate, Ocean and Atmosphere, Department of Earth Sciences, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UKCentre of Climate, Ocean and Atmosphere, Department of Earth Sciences, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UKPhotosynthetically active radiation (PAR) at the ice-ocean interface is critical for primary production. The value of PAR is affected by the thickness of snow and sea ice, with additional absorbers (e.g. algae) further attenuating PAR. Sea-ice algae exhibit a substantial geo-temporal variance in column-integrated concentration (0–500 mg chl-a m−2) and are typically present within the bottom 0.01–0.2 m of sea ice. PAR transmittance is affected by algae concentrations and vertical thicknesses of ice algal layers. Small column-integrated concentrations of chl-a (~<10 mg chl-a m−2) have a negligible effect on the value of PAR transmittance, and large column-integrated concentrations of chl-a (~>10 mg chl-a m−2) can significantly reduce the value of PAR transmittance. Large column-integrated concentrations of chl-a need consideration when calculating PAR transmittance in areas of high sea-ice algae biomass (e.g. the ‘interior’ shelves of the Arctic Ocean, the Canadian Arctic and Antarctica).https://www.cambridge.org/core/product/identifier/S0022143024000728/type/journal_articlesea-ice ecologysea icesnow |
| spellingShingle | Benjamin H. Redmond Roche Martin D. King To what extent do sea-ice algae affect the modelled transmittance of photosynthetically active radiation (PAR) to the ice-ocean interface? Journal of Glaciology sea-ice ecology sea ice snow |
| title | To what extent do sea-ice algae affect the modelled transmittance of photosynthetically active radiation (PAR) to the ice-ocean interface? |
| title_full | To what extent do sea-ice algae affect the modelled transmittance of photosynthetically active radiation (PAR) to the ice-ocean interface? |
| title_fullStr | To what extent do sea-ice algae affect the modelled transmittance of photosynthetically active radiation (PAR) to the ice-ocean interface? |
| title_full_unstemmed | To what extent do sea-ice algae affect the modelled transmittance of photosynthetically active radiation (PAR) to the ice-ocean interface? |
| title_short | To what extent do sea-ice algae affect the modelled transmittance of photosynthetically active radiation (PAR) to the ice-ocean interface? |
| title_sort | to what extent do sea ice algae affect the modelled transmittance of photosynthetically active radiation par to the ice ocean interface |
| topic | sea-ice ecology sea ice snow |
| url | https://www.cambridge.org/core/product/identifier/S0022143024000728/type/journal_article |
| work_keys_str_mv | AT benjaminhredmondroche towhatextentdoseaicealgaeaffectthemodelledtransmittanceofphotosyntheticallyactiveradiationpartotheiceoceaninterface AT martindking towhatextentdoseaicealgaeaffectthemodelledtransmittanceofphotosyntheticallyactiveradiationpartotheiceoceaninterface |