Data from: Late spring nitrate distributions beneath the ice-covered northeastern Chukchi Shelf
Measurements of late springtime nutrient concentrations in Arctic waters are relatively rare due to the extensive sea ice cover that makes sampling difficult. During the SUBICE cruise in May-June 2014, an extensive survey of hydrography and pre-bloom concentrations of inorganic macronutrients, oxyge...
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ftdryad:oai:v1.datadryad.org:10255/dryad.155258 2023-05-15T15:11:13+02:00 Data from: Late spring nitrate distributions beneath the ice-covered northeastern Chukchi Shelf Arrigo, Kevin R. Mills, Matthew M. Van Dijken, Gert L. Lowry, Kate E. Pickart, Robert S. Schlitzer, Reiner Chukchi Sea 2017-09-11T20:41:56Z http://hdl.handle.net/10255/dryad.155258 https://doi.org/10.5061/dryad.fm7b5 unknown doi:10.5061/dryad.fm7b5/1 doi:10.1002/2017jg003881 doi:10.5061/dryad.fm7b5 Arrigo KR, Mills MM, van Dijken GL, Lowry KE, Pickart RS, Schlitzer R (2017) Late Spring Nitrate Distributions Beneath the Ice-Covered Northeastern Chukchi Shelf. Journal of Geophysical Research: Biogeosciences 122(9): 2409-2417. http://hdl.handle.net/10255/dryad.155258 Article 2017 ftdryad https://doi.org/10.5061/dryad.fm7b5 https://doi.org/10.5061/dryad.fm7b5/1 https://doi.org/10.1002/2017jg003881 2020-01-01T15:55:52Z Measurements of late springtime nutrient concentrations in Arctic waters are relatively rare due to the extensive sea ice cover that makes sampling difficult. During the SUBICE cruise in May-June 2014, an extensive survey of hydrography and pre-bloom concentrations of inorganic macronutrients, oxygen, particulate organic carbon and nitrogen, and chlorophyll a was conducted in the northeastern Chukchi Sea. Cold (< -1.5°C) winter water was prevalent throughout the study area, and the water column was weakly stratified. Nitrate (NO3-) concentration averaged 12.6±1.92 μM in surface waters and 14.0±1.91 μM near the bottom and was significantly correlated with salinity. The highest NO3- concentrations were associated with winter water within the Central Channel flow path. NO3- concentrations were much reduced near the northern shelfbreak within the upper halocline waters of the Canada Basin and along the eastern side of the shelf near the Alaskan coast. Net community production (NCP), estimated as the difference in depth-integrated NO3- content between spring (this study) and summer (historical), varied from 28-38 g C m-2 a-1. This is much lower than previous NCP estimates that used NO3- concentrations from the southeastern Bering Sea as a baseline. These results demonstrate the importance of using profiles of NO3- measured as close to the beginning of the spring bloom as possible when estimating local NCP. They also show that once the snow melts in spring, increased light transmission through the sea ice to the waters below the ice could fuel large phytoplankton blooms over a much wider area than previously known. Article in Journal/Newspaper Arctic Bering Sea canada basin Chukchi Chukchi Sea Phytoplankton Sea ice Dryad Digital Repository (Duke University) Arctic Bering Sea Chukchi Sea Canada Chukchi Shelf ENVELOPE(-169.167,-169.167,70.550,70.550) |
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Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
description |
Measurements of late springtime nutrient concentrations in Arctic waters are relatively rare due to the extensive sea ice cover that makes sampling difficult. During the SUBICE cruise in May-June 2014, an extensive survey of hydrography and pre-bloom concentrations of inorganic macronutrients, oxygen, particulate organic carbon and nitrogen, and chlorophyll a was conducted in the northeastern Chukchi Sea. Cold (< -1.5°C) winter water was prevalent throughout the study area, and the water column was weakly stratified. Nitrate (NO3-) concentration averaged 12.6±1.92 μM in surface waters and 14.0±1.91 μM near the bottom and was significantly correlated with salinity. The highest NO3- concentrations were associated with winter water within the Central Channel flow path. NO3- concentrations were much reduced near the northern shelfbreak within the upper halocline waters of the Canada Basin and along the eastern side of the shelf near the Alaskan coast. Net community production (NCP), estimated as the difference in depth-integrated NO3- content between spring (this study) and summer (historical), varied from 28-38 g C m-2 a-1. This is much lower than previous NCP estimates that used NO3- concentrations from the southeastern Bering Sea as a baseline. These results demonstrate the importance of using profiles of NO3- measured as close to the beginning of the spring bloom as possible when estimating local NCP. They also show that once the snow melts in spring, increased light transmission through the sea ice to the waters below the ice could fuel large phytoplankton blooms over a much wider area than previously known. |
format |
Article in Journal/Newspaper |
author |
Arrigo, Kevin R. Mills, Matthew M. Van Dijken, Gert L. Lowry, Kate E. Pickart, Robert S. Schlitzer, Reiner |
spellingShingle |
Arrigo, Kevin R. Mills, Matthew M. Van Dijken, Gert L. Lowry, Kate E. Pickart, Robert S. Schlitzer, Reiner Data from: Late spring nitrate distributions beneath the ice-covered northeastern Chukchi Shelf |
author_facet |
Arrigo, Kevin R. Mills, Matthew M. Van Dijken, Gert L. Lowry, Kate E. Pickart, Robert S. Schlitzer, Reiner |
author_sort |
Arrigo, Kevin R. |
title |
Data from: Late spring nitrate distributions beneath the ice-covered northeastern Chukchi Shelf |
title_short |
Data from: Late spring nitrate distributions beneath the ice-covered northeastern Chukchi Shelf |
title_full |
Data from: Late spring nitrate distributions beneath the ice-covered northeastern Chukchi Shelf |
title_fullStr |
Data from: Late spring nitrate distributions beneath the ice-covered northeastern Chukchi Shelf |
title_full_unstemmed |
Data from: Late spring nitrate distributions beneath the ice-covered northeastern Chukchi Shelf |
title_sort |
data from: late spring nitrate distributions beneath the ice-covered northeastern chukchi shelf |
publishDate |
2017 |
url |
http://hdl.handle.net/10255/dryad.155258 https://doi.org/10.5061/dryad.fm7b5 |
op_coverage |
Chukchi Sea |
long_lat |
ENVELOPE(-169.167,-169.167,70.550,70.550) |
geographic |
Arctic Bering Sea Chukchi Sea Canada Chukchi Shelf |
geographic_facet |
Arctic Bering Sea Chukchi Sea Canada Chukchi Shelf |
genre |
Arctic Bering Sea canada basin Chukchi Chukchi Sea Phytoplankton Sea ice |
genre_facet |
Arctic Bering Sea canada basin Chukchi Chukchi Sea Phytoplankton Sea ice |
op_relation |
doi:10.5061/dryad.fm7b5/1 doi:10.1002/2017jg003881 doi:10.5061/dryad.fm7b5 Arrigo KR, Mills MM, van Dijken GL, Lowry KE, Pickart RS, Schlitzer R (2017) Late Spring Nitrate Distributions Beneath the Ice-Covered Northeastern Chukchi Shelf. Journal of Geophysical Research: Biogeosciences 122(9): 2409-2417. http://hdl.handle.net/10255/dryad.155258 |
op_doi |
https://doi.org/10.5061/dryad.fm7b5 https://doi.org/10.5061/dryad.fm7b5/1 https://doi.org/10.1002/2017jg003881 |
_version_ |
1766342107466825728 |