Spatio-Temporal Variability of Suspended Particulate Matter in a High-Arctic Estuary (Adventfjorden, Svalbard) Using Sentinel-2 Time-Series
Arctic coasts, which feature land-ocean transport of freshwater, sediments, and other terrestrial material, are impacted by climate change, including increased temperatures, melting glaciers, changes in precipitation and runoff. These trends are assumed to affect productivity in fjordic estuaries. H...
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ftmdpi:oai:mdpi.com:/2072-4292/14/13/3123/ 2023-08-20T03:59:10+02:00 Spatio-Temporal Variability of Suspended Particulate Matter in a High-Arctic Estuary (Adventfjorden, Svalbard) Using Sentinel-2 Time-Series Daniela M. R. Walch Rakesh K. Singh Janne E. Søreide Hugues Lantuit Amanda Poste agris 2022-06-29 application/pdf https://doi.org/10.3390/rs14133123 EN eng Multidisciplinary Digital Publishing Institute Remote Sensing and Geo-Spatial Science https://dx.doi.org/10.3390/rs14133123 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 14; Issue 13; Pages: 3123 ocean colour coastal darkening SPM sediment plumes Arctic coast remote sensing regional tuning coastal ecosystems land-ocean-interaction riverine inputs Text 2022 ftmdpi https://doi.org/10.3390/rs14133123 2023-08-01T05:32:32Z Arctic coasts, which feature land-ocean transport of freshwater, sediments, and other terrestrial material, are impacted by climate change, including increased temperatures, melting glaciers, changes in precipitation and runoff. These trends are assumed to affect productivity in fjordic estuaries. However, the spatial extent and temporal variation of the freshwater-driven darkening of fjords remain unresolved. The present study illustrates the spatio-temporal variability of suspended particulate matter (SPM) in the Adventfjorden estuary, Svalbard, using in-situ field campaigns and ocean colour remote sensing (OCRS) via high-resolution Sentinel-2 imagery. To compute SPM concentration (CSPMsat), a semi-analytical algorithm was regionally calibrated using local in-situ data, which improved the accuracy of satellite-derived SPM concentration by ~20% (MRD). Analysis of SPM concentration for two consecutive years (2019, 2020) revealed strong seasonality of SPM in Adventfjorden. Highest estimated SPM concentrations and river plume extent (% of fjord with CSPMsat > 30 mgL−1) occurred during June, July, and August. Concurrently, we observed a strong relationship between river plume extent and average air temperature over the 24 h prior to the observation (R2 = 0.69). Considering predicted changes to environmental conditions in the Arctic region, this study highlights the importance of the rapidly changing environmental parameters and the significance of remote sensing in analysing fluxes in light attenuating particles, especially in the coastal Arctic Ocean. Text Adventfjorden Arctic Arctic Ocean Climate change Svalbard MDPI Open Access Publishing Arctic Arctic Ocean Svalbard Adventfjorden ENVELOPE(15.515,15.515,78.258,78.258) Remote Sensing 14 13 3123 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
ocean colour coastal darkening SPM sediment plumes Arctic coast remote sensing regional tuning coastal ecosystems land-ocean-interaction riverine inputs |
spellingShingle |
ocean colour coastal darkening SPM sediment plumes Arctic coast remote sensing regional tuning coastal ecosystems land-ocean-interaction riverine inputs Daniela M. R. Walch Rakesh K. Singh Janne E. Søreide Hugues Lantuit Amanda Poste Spatio-Temporal Variability of Suspended Particulate Matter in a High-Arctic Estuary (Adventfjorden, Svalbard) Using Sentinel-2 Time-Series |
topic_facet |
ocean colour coastal darkening SPM sediment plumes Arctic coast remote sensing regional tuning coastal ecosystems land-ocean-interaction riverine inputs |
description |
Arctic coasts, which feature land-ocean transport of freshwater, sediments, and other terrestrial material, are impacted by climate change, including increased temperatures, melting glaciers, changes in precipitation and runoff. These trends are assumed to affect productivity in fjordic estuaries. However, the spatial extent and temporal variation of the freshwater-driven darkening of fjords remain unresolved. The present study illustrates the spatio-temporal variability of suspended particulate matter (SPM) in the Adventfjorden estuary, Svalbard, using in-situ field campaigns and ocean colour remote sensing (OCRS) via high-resolution Sentinel-2 imagery. To compute SPM concentration (CSPMsat), a semi-analytical algorithm was regionally calibrated using local in-situ data, which improved the accuracy of satellite-derived SPM concentration by ~20% (MRD). Analysis of SPM concentration for two consecutive years (2019, 2020) revealed strong seasonality of SPM in Adventfjorden. Highest estimated SPM concentrations and river plume extent (% of fjord with CSPMsat > 30 mgL−1) occurred during June, July, and August. Concurrently, we observed a strong relationship between river plume extent and average air temperature over the 24 h prior to the observation (R2 = 0.69). Considering predicted changes to environmental conditions in the Arctic region, this study highlights the importance of the rapidly changing environmental parameters and the significance of remote sensing in analysing fluxes in light attenuating particles, especially in the coastal Arctic Ocean. |
format |
Text |
author |
Daniela M. R. Walch Rakesh K. Singh Janne E. Søreide Hugues Lantuit Amanda Poste |
author_facet |
Daniela M. R. Walch Rakesh K. Singh Janne E. Søreide Hugues Lantuit Amanda Poste |
author_sort |
Daniela M. R. Walch |
title |
Spatio-Temporal Variability of Suspended Particulate Matter in a High-Arctic Estuary (Adventfjorden, Svalbard) Using Sentinel-2 Time-Series |
title_short |
Spatio-Temporal Variability of Suspended Particulate Matter in a High-Arctic Estuary (Adventfjorden, Svalbard) Using Sentinel-2 Time-Series |
title_full |
Spatio-Temporal Variability of Suspended Particulate Matter in a High-Arctic Estuary (Adventfjorden, Svalbard) Using Sentinel-2 Time-Series |
title_fullStr |
Spatio-Temporal Variability of Suspended Particulate Matter in a High-Arctic Estuary (Adventfjorden, Svalbard) Using Sentinel-2 Time-Series |
title_full_unstemmed |
Spatio-Temporal Variability of Suspended Particulate Matter in a High-Arctic Estuary (Adventfjorden, Svalbard) Using Sentinel-2 Time-Series |
title_sort |
spatio-temporal variability of suspended particulate matter in a high-arctic estuary (adventfjorden, svalbard) using sentinel-2 time-series |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/rs14133123 |
op_coverage |
agris |
long_lat |
ENVELOPE(15.515,15.515,78.258,78.258) |
geographic |
Arctic Arctic Ocean Svalbard Adventfjorden |
geographic_facet |
Arctic Arctic Ocean Svalbard Adventfjorden |
genre |
Adventfjorden Arctic Arctic Ocean Climate change Svalbard |
genre_facet |
Adventfjorden Arctic Arctic Ocean Climate change Svalbard |
op_source |
Remote Sensing; Volume 14; Issue 13; Pages: 3123 |
op_relation |
Remote Sensing and Geo-Spatial Science https://dx.doi.org/10.3390/rs14133123 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs14133123 |
container_title |
Remote Sensing |
container_volume |
14 |
container_issue |
13 |
container_start_page |
3123 |
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1774716709492490240 |