Video_1_Spatial Heterogeneity as a Key Variable Influencing Spring-Summer Progression in UVR and PAR Transmission Through Arctic Sea Ice.AVI
The transmission of ultraviolet (UVR) and photosynthetically available radiation (PAR) through sea ice is a key factor controlling under-ice phytoplankton growth in seasonally ice-covered waters. The increase toward sufficient light levels for positive net photosynthesis occurs concurrently with the...
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ftfrontimediafig:oai:figshare.com:article/12034458 2023-05-15T13:11:36+02:00 Video_1_Spatial Heterogeneity as a Key Variable Influencing Spring-Summer Progression in UVR and PAR Transmission Through Arctic Sea Ice.AVI Lisa C. Matthes C. J. Mundy S. L.-Girard M. Babin G. Verin J. K. Ehn 2020-03-26T14:26:18Z https://doi.org/10.3389/fmars.2020.00183.s002 https://figshare.com/articles/Video_1_Spatial_Heterogeneity_as_a_Key_Variable_Influencing_Spring-Summer_Progression_in_UVR_and_PAR_Transmission_Through_Arctic_Sea_Ice_AVI/12034458 unknown doi:10.3389/fmars.2020.00183.s002 https://figshare.com/articles/Video_1_Spatial_Heterogeneity_as_a_Key_Variable_Influencing_Spring-Summer_Progression_in_UVR_and_PAR_Transmission_Through_Arctic_Sea_Ice_AVI/12034458 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Arctic sea ice radiative transfer PAR UVR transmittance spatial variability ROV under-ice phytoplankton bloom Dataset Media 2020 ftfrontimediafig https://doi.org/10.3389/fmars.2020.00183.s002 2020-04-01T22:53:47Z The transmission of ultraviolet (UVR) and photosynthetically available radiation (PAR) through sea ice is a key factor controlling under-ice phytoplankton growth in seasonally ice-covered waters. The increase toward sufficient light levels for positive net photosynthesis occurs concurrently with the sea ice melt progression in late spring when ice surface conditions shift from a relatively homogeneous high-albedo snow cover to a less reflective mosaic of bare ice and melt ponds. Here, we present a detailed dataset on the spatial and temporal progression of transmitted UVR and PAR in relation to changing quantities of snow, sea ice and melt ponds. Data were collected with a remotely operated vehicle (ROV) during the GreenEdge landfast sea ice campaign in June–July 2016 in southwestern Baffin Bay. Over the course of melt progression, there was a 10-fold increase in spatially averaged UVR and PAR transmission through the sea ice cover, reaching a maximum transmission of 31% for PAR, 7% for UVB, and 26% for UVA radiation. The depth under the sea ice experiencing spatial variability in light levels due to the influence of surface heterogeneity in snow, white ice and melt pond distributions increased from 7 ± 4 to 20 ± 6 m over our study. Phytoplankton drifting in under-ice surface waters were thus exposed to variations in PAR availability of up to 43%, highlighting the importance to account for spatial heterogeneity in light transmission through melting sea ice. Consequently, we demonstrate that spatial averages of PAR transmission provided more representative light availability estimates to explain under-ice bloom progression relative to single point irradiance measurements during the sea ice melt season. Encouragingly, the strong dichotomy between white ice and melt pond PAR transmittance and surface albedo permitted a very good estimate of spatially averaged light transmission from drone imagery of the surface and point transmittance measurements beneath different ice surface types. Dataset albedo Arctic Baffin Bay Baffin Bay Baffin Phytoplankton Sea ice ice covered waters Frontiers: Figshare Arctic Baffin Bay |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Arctic sea ice radiative transfer PAR UVR transmittance spatial variability ROV under-ice phytoplankton bloom |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Arctic sea ice radiative transfer PAR UVR transmittance spatial variability ROV under-ice phytoplankton bloom Lisa C. Matthes C. J. Mundy S. L.-Girard M. Babin G. Verin J. K. Ehn Video_1_Spatial Heterogeneity as a Key Variable Influencing Spring-Summer Progression in UVR and PAR Transmission Through Arctic Sea Ice.AVI |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Arctic sea ice radiative transfer PAR UVR transmittance spatial variability ROV under-ice phytoplankton bloom |
description |
The transmission of ultraviolet (UVR) and photosynthetically available radiation (PAR) through sea ice is a key factor controlling under-ice phytoplankton growth in seasonally ice-covered waters. The increase toward sufficient light levels for positive net photosynthesis occurs concurrently with the sea ice melt progression in late spring when ice surface conditions shift from a relatively homogeneous high-albedo snow cover to a less reflective mosaic of bare ice and melt ponds. Here, we present a detailed dataset on the spatial and temporal progression of transmitted UVR and PAR in relation to changing quantities of snow, sea ice and melt ponds. Data were collected with a remotely operated vehicle (ROV) during the GreenEdge landfast sea ice campaign in June–July 2016 in southwestern Baffin Bay. Over the course of melt progression, there was a 10-fold increase in spatially averaged UVR and PAR transmission through the sea ice cover, reaching a maximum transmission of 31% for PAR, 7% for UVB, and 26% for UVA radiation. The depth under the sea ice experiencing spatial variability in light levels due to the influence of surface heterogeneity in snow, white ice and melt pond distributions increased from 7 ± 4 to 20 ± 6 m over our study. Phytoplankton drifting in under-ice surface waters were thus exposed to variations in PAR availability of up to 43%, highlighting the importance to account for spatial heterogeneity in light transmission through melting sea ice. Consequently, we demonstrate that spatial averages of PAR transmission provided more representative light availability estimates to explain under-ice bloom progression relative to single point irradiance measurements during the sea ice melt season. Encouragingly, the strong dichotomy between white ice and melt pond PAR transmittance and surface albedo permitted a very good estimate of spatially averaged light transmission from drone imagery of the surface and point transmittance measurements beneath different ice surface types. |
format |
Dataset |
author |
Lisa C. Matthes C. J. Mundy S. L.-Girard M. Babin G. Verin J. K. Ehn |
author_facet |
Lisa C. Matthes C. J. Mundy S. L.-Girard M. Babin G. Verin J. K. Ehn |
author_sort |
Lisa C. Matthes |
title |
Video_1_Spatial Heterogeneity as a Key Variable Influencing Spring-Summer Progression in UVR and PAR Transmission Through Arctic Sea Ice.AVI |
title_short |
Video_1_Spatial Heterogeneity as a Key Variable Influencing Spring-Summer Progression in UVR and PAR Transmission Through Arctic Sea Ice.AVI |
title_full |
Video_1_Spatial Heterogeneity as a Key Variable Influencing Spring-Summer Progression in UVR and PAR Transmission Through Arctic Sea Ice.AVI |
title_fullStr |
Video_1_Spatial Heterogeneity as a Key Variable Influencing Spring-Summer Progression in UVR and PAR Transmission Through Arctic Sea Ice.AVI |
title_full_unstemmed |
Video_1_Spatial Heterogeneity as a Key Variable Influencing Spring-Summer Progression in UVR and PAR Transmission Through Arctic Sea Ice.AVI |
title_sort |
video_1_spatial heterogeneity as a key variable influencing spring-summer progression in uvr and par transmission through arctic sea ice.avi |
publishDate |
2020 |
url |
https://doi.org/10.3389/fmars.2020.00183.s002 https://figshare.com/articles/Video_1_Spatial_Heterogeneity_as_a_Key_Variable_Influencing_Spring-Summer_Progression_in_UVR_and_PAR_Transmission_Through_Arctic_Sea_Ice_AVI/12034458 |
geographic |
Arctic Baffin Bay |
geographic_facet |
Arctic Baffin Bay |
genre |
albedo Arctic Baffin Bay Baffin Bay Baffin Phytoplankton Sea ice ice covered waters |
genre_facet |
albedo Arctic Baffin Bay Baffin Bay Baffin Phytoplankton Sea ice ice covered waters |
op_relation |
doi:10.3389/fmars.2020.00183.s002 https://figshare.com/articles/Video_1_Spatial_Heterogeneity_as_a_Key_Variable_Influencing_Spring-Summer_Progression_in_UVR_and_PAR_Transmission_Through_Arctic_Sea_Ice_AVI/12034458 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2020.00183.s002 |
_version_ |
1766248154985922560 |