DataSheet_1_Delineation of Eastern Beaufort Sea Sub-regions Using Self-Organizing Maps Applied to 17 Years of MODIS-Aqua Data.pdf
Satellite observations are an integral component of long-term Arctic Ocean monitoring and help identifying changes resulting from climate warming. A Self-Organizing Maps (SOM) approach was applied to four-day composite satellite images of the Eastern Beaufort Sea (EBS) acquired by the MODerate resol...
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ftfrontimediafig:oai:figshare.com:article/20207432 2023-05-15T13:22:52+02:00 DataSheet_1_Delineation of Eastern Beaufort Sea Sub-regions Using Self-Organizing Maps Applied to 17 Years of MODIS-Aqua Data.pdf Andrea Hilborn Emmanuel Devred 2022-07-01T05:24:27Z https://doi.org/10.3389/fmars.2022.912865.s001 https://figshare.com/articles/dataset/DataSheet_1_Delineation_of_Eastern_Beaufort_Sea_Sub-regions_Using_Self-Organizing_Maps_Applied_to_17_Years_of_MODIS-Aqua_Data_pdf/20207432 unknown doi:10.3389/fmars.2022.912865.s001 https://figshare.com/articles/dataset/DataSheet_1_Delineation_of_Eastern_Beaufort_Sea_Sub-regions_Using_Self-Organizing_Maps_Applied_to_17_Years_of_MODIS-Aqua_Data_pdf/20207432 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering ocean colour Beaufort Sea chlorophyll-a concentration suspended particulate matter sea surface temperature biogeochemical regions self-organizing maps Dataset 2022 ftfrontimediafig https://doi.org/10.3389/fmars.2022.912865.s001 2022-07-06T23:07:59Z Satellite observations are an integral component of long-term Arctic Ocean monitoring and help identifying changes resulting from climate warming. A Self-Organizing Maps (SOM) approach was applied to four-day composite satellite images of the Eastern Beaufort Sea (EBS) acquired by the MODerate resolution Imaging Spectroradiometer over the period 2003–2019. Using sea-surface temperature (SST), suspended particulate matter concentration (SPM) and chlorophyll-a concentration (Chl-a) as input the EBS was partitioned into six biogeochemical regions. The SOM approach revealed region-specific mean conditions and seasonal cycles for all properties, particularly for SPM and Chl-a. Three of the six regions, located on the continental shelf, had the highest SST, SPM and Chl-a with earlier maxima compared to the remaining three regions which comprised the shelf edge, Canada Basin and Amundsen Gulf. While mean and maximum SST did not exhibit significant trends over the 17 years of observations, the annual maximum SST in Amundsen Gulf was reached significantly earlier in recent years compared to the start of the time series. With the exception of Amundsen Gulf, sea-ice concentration (SIC) derived from microwave satellites declined throughout the study area; monthly trends showed dramatic SIC declines in regions on the shelf during May and June, and in Canada Basin during August. Correlation analysis of properties within and between regions showed that SST and SIC were driven by large scale processes while SPM and Chl-a showed regional features. SST and Chl-a in the regions nearest the Mackenzie River showed a strong relationship during seasonal warming. The SOM approach, applied to 17 years of satellite data, revealed spatially distinct marine units with unique characteristics, emphasizing the need for regional considerations when assessing the impact of climate warming in the Arctic Ocean. Dataset Amundsen Gulf Arctic Arctic Ocean Beaufort Sea canada basin Mackenzie river Sea ice Frontiers: Figshare Arctic Arctic Ocean Mackenzie River Canada |
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 ocean colour Beaufort Sea chlorophyll-a concentration suspended particulate matter sea surface temperature biogeochemical regions self-organizing maps |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering ocean colour Beaufort Sea chlorophyll-a concentration suspended particulate matter sea surface temperature biogeochemical regions self-organizing maps Andrea Hilborn Emmanuel Devred DataSheet_1_Delineation of Eastern Beaufort Sea Sub-regions Using Self-Organizing Maps Applied to 17 Years of MODIS-Aqua Data.pdf |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering ocean colour Beaufort Sea chlorophyll-a concentration suspended particulate matter sea surface temperature biogeochemical regions self-organizing maps |
description |
Satellite observations are an integral component of long-term Arctic Ocean monitoring and help identifying changes resulting from climate warming. A Self-Organizing Maps (SOM) approach was applied to four-day composite satellite images of the Eastern Beaufort Sea (EBS) acquired by the MODerate resolution Imaging Spectroradiometer over the period 2003–2019. Using sea-surface temperature (SST), suspended particulate matter concentration (SPM) and chlorophyll-a concentration (Chl-a) as input the EBS was partitioned into six biogeochemical regions. The SOM approach revealed region-specific mean conditions and seasonal cycles for all properties, particularly for SPM and Chl-a. Three of the six regions, located on the continental shelf, had the highest SST, SPM and Chl-a with earlier maxima compared to the remaining three regions which comprised the shelf edge, Canada Basin and Amundsen Gulf. While mean and maximum SST did not exhibit significant trends over the 17 years of observations, the annual maximum SST in Amundsen Gulf was reached significantly earlier in recent years compared to the start of the time series. With the exception of Amundsen Gulf, sea-ice concentration (SIC) derived from microwave satellites declined throughout the study area; monthly trends showed dramatic SIC declines in regions on the shelf during May and June, and in Canada Basin during August. Correlation analysis of properties within and between regions showed that SST and SIC were driven by large scale processes while SPM and Chl-a showed regional features. SST and Chl-a in the regions nearest the Mackenzie River showed a strong relationship during seasonal warming. The SOM approach, applied to 17 years of satellite data, revealed spatially distinct marine units with unique characteristics, emphasizing the need for regional considerations when assessing the impact of climate warming in the Arctic Ocean. |
format |
Dataset |
author |
Andrea Hilborn Emmanuel Devred |
author_facet |
Andrea Hilborn Emmanuel Devred |
author_sort |
Andrea Hilborn |
title |
DataSheet_1_Delineation of Eastern Beaufort Sea Sub-regions Using Self-Organizing Maps Applied to 17 Years of MODIS-Aqua Data.pdf |
title_short |
DataSheet_1_Delineation of Eastern Beaufort Sea Sub-regions Using Self-Organizing Maps Applied to 17 Years of MODIS-Aqua Data.pdf |
title_full |
DataSheet_1_Delineation of Eastern Beaufort Sea Sub-regions Using Self-Organizing Maps Applied to 17 Years of MODIS-Aqua Data.pdf |
title_fullStr |
DataSheet_1_Delineation of Eastern Beaufort Sea Sub-regions Using Self-Organizing Maps Applied to 17 Years of MODIS-Aqua Data.pdf |
title_full_unstemmed |
DataSheet_1_Delineation of Eastern Beaufort Sea Sub-regions Using Self-Organizing Maps Applied to 17 Years of MODIS-Aqua Data.pdf |
title_sort |
datasheet_1_delineation of eastern beaufort sea sub-regions using self-organizing maps applied to 17 years of modis-aqua data.pdf |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmars.2022.912865.s001 https://figshare.com/articles/dataset/DataSheet_1_Delineation_of_Eastern_Beaufort_Sea_Sub-regions_Using_Self-Organizing_Maps_Applied_to_17_Years_of_MODIS-Aqua_Data_pdf/20207432 |
geographic |
Arctic Arctic Ocean Mackenzie River Canada |
geographic_facet |
Arctic Arctic Ocean Mackenzie River Canada |
genre |
Amundsen Gulf Arctic Arctic Ocean Beaufort Sea canada basin Mackenzie river Sea ice |
genre_facet |
Amundsen Gulf Arctic Arctic Ocean Beaufort Sea canada basin Mackenzie river Sea ice |
op_relation |
doi:10.3389/fmars.2022.912865.s001 https://figshare.com/articles/dataset/DataSheet_1_Delineation_of_Eastern_Beaufort_Sea_Sub-regions_Using_Self-Organizing_Maps_Applied_to_17_Years_of_MODIS-Aqua_Data_pdf/20207432 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2022.912865.s001 |
_version_ |
1766367457282359296 |