Greenland Subglacial Discharge as a Driver of Hotspots of Increasing Coastal Chlorophyll Since the Early 2000s
Subglacial discharge emerging from the base of Greenland's marine-terminating glaciers drives upwelling of nutrient-rich bottom waters to the euphotic zone, which can fuel nitrate-limited phytoplankton growth. Here, we use buoyant plume theory to quantify this subglacial discharge-driven nutrie...
Published in: | Geophysical Research Letters |
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Online Access: | https://scholarworks.sjsu.edu/faculty_rsca/3900 https://doi.org/10.1029/2022GL102689 https://scholarworks.sjsu.edu/context/faculty_rsca/article/4899/viewcontent/Greenland_20Subglacial_20Discharge_20as_20a_20Driver_20of_20Hotspots_20of_20Increasing_20Coastal_20Chlorophyll_20Since_20the_20Early_202000s.pdf |
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ftsanjosestate:oai:scholarworks.sjsu.edu:faculty_rsca-4899 2023-08-20T04:06:08+02:00 Greenland Subglacial Discharge as a Driver of Hotspots of Increasing Coastal Chlorophyll Since the Early 2000s Oliver, Hilde Slater, Donald Carroll, Dustin Wood, Michael Morlighem, Mathieu Hopwood, Mark J. 2023-05-28T07:00:00Z application/pdf https://scholarworks.sjsu.edu/faculty_rsca/3900 https://doi.org/10.1029/2022GL102689 https://scholarworks.sjsu.edu/context/faculty_rsca/article/4899/viewcontent/Greenland_20Subglacial_20Discharge_20as_20a_20Driver_20of_20Hotspots_20of_20Increasing_20Coastal_20Chlorophyll_20Since_20the_20Early_202000s.pdf unknown SJSU ScholarWorks https://scholarworks.sjsu.edu/faculty_rsca/3900 doi:10.1029/2022GL102689 https://scholarworks.sjsu.edu/context/faculty_rsca/article/4899/viewcontent/Greenland_20Subglacial_20Discharge_20as_20a_20Driver_20of_20Hotspots_20of_20Increasing_20Coastal_20Chlorophyll_20Since_20the_20Early_202000s.pdf http://creativecommons.org/licenses/by/4.0/ Faculty Research, Scholarly, and Creative Activity Moss Landing Marine Laboratories text 2023 ftsanjosestate https://doi.org/10.1029/2022GL102689 2023-07-31T18:06:14Z Subglacial discharge emerging from the base of Greenland's marine-terminating glaciers drives upwelling of nutrient-rich bottom waters to the euphotic zone, which can fuel nitrate-limited phytoplankton growth. Here, we use buoyant plume theory to quantify this subglacial discharge-driven nutrient supply on a pan-Greenland scale. The modeled nitrate fluxes were concentrated in a few critical systems, with half of the total modeled nitrate flux anomaly occurring at just 14% of marine-terminating glaciers. Increasing subglacial discharge fluxes results in elevated nitrate fluxes, with the largest flux occurring at Jakobshavn Isbræ in Disko Bay, where subglacial discharge is largest. Subglacial discharge and nitrate flux anomaly also account for significant temporal variability in summer satellite chlorophyll a (Chl) within 50 km of Greenland's coast, particularly in some regions in central west and northwest Greenland. Text Disko Bay Greenland Jakobshavn Jakobshavn isbræ San José State University: SJSU ScholarWorks Greenland Jakobshavn Isbræ ENVELOPE(-49.917,-49.917,69.167,69.167) Geophysical Research Letters 50 10 |
institution |
Open Polar |
collection |
San José State University: SJSU ScholarWorks |
op_collection_id |
ftsanjosestate |
language |
unknown |
topic |
Moss Landing Marine Laboratories |
spellingShingle |
Moss Landing Marine Laboratories Oliver, Hilde Slater, Donald Carroll, Dustin Wood, Michael Morlighem, Mathieu Hopwood, Mark J. Greenland Subglacial Discharge as a Driver of Hotspots of Increasing Coastal Chlorophyll Since the Early 2000s |
topic_facet |
Moss Landing Marine Laboratories |
description |
Subglacial discharge emerging from the base of Greenland's marine-terminating glaciers drives upwelling of nutrient-rich bottom waters to the euphotic zone, which can fuel nitrate-limited phytoplankton growth. Here, we use buoyant plume theory to quantify this subglacial discharge-driven nutrient supply on a pan-Greenland scale. The modeled nitrate fluxes were concentrated in a few critical systems, with half of the total modeled nitrate flux anomaly occurring at just 14% of marine-terminating glaciers. Increasing subglacial discharge fluxes results in elevated nitrate fluxes, with the largest flux occurring at Jakobshavn Isbræ in Disko Bay, where subglacial discharge is largest. Subglacial discharge and nitrate flux anomaly also account for significant temporal variability in summer satellite chlorophyll a (Chl) within 50 km of Greenland's coast, particularly in some regions in central west and northwest Greenland. |
format |
Text |
author |
Oliver, Hilde Slater, Donald Carroll, Dustin Wood, Michael Morlighem, Mathieu Hopwood, Mark J. |
author_facet |
Oliver, Hilde Slater, Donald Carroll, Dustin Wood, Michael Morlighem, Mathieu Hopwood, Mark J. |
author_sort |
Oliver, Hilde |
title |
Greenland Subglacial Discharge as a Driver of Hotspots of Increasing Coastal Chlorophyll Since the Early 2000s |
title_short |
Greenland Subglacial Discharge as a Driver of Hotspots of Increasing Coastal Chlorophyll Since the Early 2000s |
title_full |
Greenland Subglacial Discharge as a Driver of Hotspots of Increasing Coastal Chlorophyll Since the Early 2000s |
title_fullStr |
Greenland Subglacial Discharge as a Driver of Hotspots of Increasing Coastal Chlorophyll Since the Early 2000s |
title_full_unstemmed |
Greenland Subglacial Discharge as a Driver of Hotspots of Increasing Coastal Chlorophyll Since the Early 2000s |
title_sort |
greenland subglacial discharge as a driver of hotspots of increasing coastal chlorophyll since the early 2000s |
publisher |
SJSU ScholarWorks |
publishDate |
2023 |
url |
https://scholarworks.sjsu.edu/faculty_rsca/3900 https://doi.org/10.1029/2022GL102689 https://scholarworks.sjsu.edu/context/faculty_rsca/article/4899/viewcontent/Greenland_20Subglacial_20Discharge_20as_20a_20Driver_20of_20Hotspots_20of_20Increasing_20Coastal_20Chlorophyll_20Since_20the_20Early_202000s.pdf |
long_lat |
ENVELOPE(-49.917,-49.917,69.167,69.167) |
geographic |
Greenland Jakobshavn Isbræ |
geographic_facet |
Greenland Jakobshavn Isbræ |
genre |
Disko Bay Greenland Jakobshavn Jakobshavn isbræ |
genre_facet |
Disko Bay Greenland Jakobshavn Jakobshavn isbræ |
op_source |
Faculty Research, Scholarly, and Creative Activity |
op_relation |
https://scholarworks.sjsu.edu/faculty_rsca/3900 doi:10.1029/2022GL102689 https://scholarworks.sjsu.edu/context/faculty_rsca/article/4899/viewcontent/Greenland_20Subglacial_20Discharge_20as_20a_20Driver_20of_20Hotspots_20of_20Increasing_20Coastal_20Chlorophyll_20Since_20the_20Early_202000s.pdf |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1029/2022GL102689 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
10 |
_version_ |
1774717068987334656 |