Investigation of North Atlantic Salinity Long-Term Trends Based on Historical Datasets
In contrast to fairly good knowledge of seasonal and interannual variability in North Atlantic salinity, its long-term historical changes remain poorly characterized, making it difficult to assess the current state and possible future changes. To fill this gap, we present the results of applying a n...
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ftdoajarticles:oai:doaj.org/article:fa6ca9f02ab743f39cff73d8f4d02b67 2024-09-15T18:20:41+00:00 Investigation of North Atlantic Salinity Long-Term Trends Based on Historical Datasets Pavel Sukhonos Anatoly Gusev Nikolay Diansky 2024-08-01T00:00:00Z https://doi.org/10.3390/jmse12081404 https://doaj.org/article/fa6ca9f02ab743f39cff73d8f4d02b67 EN eng MDPI AG https://www.mdpi.com/2077-1312/12/8/1404 https://doaj.org/toc/2077-1312 doi:10.3390/jmse12081404 2077-1312 https://doaj.org/article/fa6ca9f02ab743f39cff73d8f4d02b67 Journal of Marine Science and Engineering, Vol 12, Iss 8, p 1404 (2024) salinity quantile trend ocean reanalysis North Atlantic Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 article 2024 ftdoajarticles https://doi.org/10.3390/jmse12081404 2024-09-02T15:34:38Z In contrast to fairly good knowledge of seasonal and interannual variability in North Atlantic salinity, its long-term historical changes remain poorly characterized, making it difficult to assess the current state and possible future changes. To fill this gap, we present the results of applying a non-parametric method of regression analysis (quantile regression) to assess long-term changes in North Atlantic salinity (0°–70° N, 8°–80° W) based on multiple datasets. The features of quantile trends in monthly salinity for a median value in two periods (1948–2018 and 1961–2011) are considered. In 1948–2018, salinization was generally detected in North Atlantic tropical and subtropical latitudes, while desalination was found in subpolar latitudes. For the 71-year period under consideration, the median monthly salinity in subtropical latitudes increased by 0.07 <semantics> ± </semantics> 0.02 PSU. Over the period 1961–2011, pronounced long-term changes in the North Atlantic salinity are difficult to identify based on the datasets used. A consistency analysis of significant salinity trends across the most used datasets allowed us to detect five small areas with pronounced positive trends in the upper ocean salinity. These include the Guiana Current, the vicinity of 12° N, 48° W, the Canary upwelling area, the region of the Gulf Stream transition to the North Atlantic Current and the western part of the North Atlantic Subpolar Gyre. In these areas, over a 51-year period, salinity in the 10–400 m layer increased by an average of 0.10 <semantics> ± </semantics> 0.04 PSU. Article in Journal/Newspaper north atlantic current North Atlantic Directory of Open Access Journals: DOAJ Articles Journal of Marine Science and Engineering 12 8 1404 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
salinity quantile trend ocean reanalysis North Atlantic Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
spellingShingle |
salinity quantile trend ocean reanalysis North Atlantic Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Pavel Sukhonos Anatoly Gusev Nikolay Diansky Investigation of North Atlantic Salinity Long-Term Trends Based on Historical Datasets |
topic_facet |
salinity quantile trend ocean reanalysis North Atlantic Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
description |
In contrast to fairly good knowledge of seasonal and interannual variability in North Atlantic salinity, its long-term historical changes remain poorly characterized, making it difficult to assess the current state and possible future changes. To fill this gap, we present the results of applying a non-parametric method of regression analysis (quantile regression) to assess long-term changes in North Atlantic salinity (0°–70° N, 8°–80° W) based on multiple datasets. The features of quantile trends in monthly salinity for a median value in two periods (1948–2018 and 1961–2011) are considered. In 1948–2018, salinization was generally detected in North Atlantic tropical and subtropical latitudes, while desalination was found in subpolar latitudes. For the 71-year period under consideration, the median monthly salinity in subtropical latitudes increased by 0.07 <semantics> ± </semantics> 0.02 PSU. Over the period 1961–2011, pronounced long-term changes in the North Atlantic salinity are difficult to identify based on the datasets used. A consistency analysis of significant salinity trends across the most used datasets allowed us to detect five small areas with pronounced positive trends in the upper ocean salinity. These include the Guiana Current, the vicinity of 12° N, 48° W, the Canary upwelling area, the region of the Gulf Stream transition to the North Atlantic Current and the western part of the North Atlantic Subpolar Gyre. In these areas, over a 51-year period, salinity in the 10–400 m layer increased by an average of 0.10 <semantics> ± </semantics> 0.04 PSU. |
format |
Article in Journal/Newspaper |
author |
Pavel Sukhonos Anatoly Gusev Nikolay Diansky |
author_facet |
Pavel Sukhonos Anatoly Gusev Nikolay Diansky |
author_sort |
Pavel Sukhonos |
title |
Investigation of North Atlantic Salinity Long-Term Trends Based on Historical Datasets |
title_short |
Investigation of North Atlantic Salinity Long-Term Trends Based on Historical Datasets |
title_full |
Investigation of North Atlantic Salinity Long-Term Trends Based on Historical Datasets |
title_fullStr |
Investigation of North Atlantic Salinity Long-Term Trends Based on Historical Datasets |
title_full_unstemmed |
Investigation of North Atlantic Salinity Long-Term Trends Based on Historical Datasets |
title_sort |
investigation of north atlantic salinity long-term trends based on historical datasets |
publisher |
MDPI AG |
publishDate |
2024 |
url |
https://doi.org/10.3390/jmse12081404 https://doaj.org/article/fa6ca9f02ab743f39cff73d8f4d02b67 |
genre |
north atlantic current North Atlantic |
genre_facet |
north atlantic current North Atlantic |
op_source |
Journal of Marine Science and Engineering, Vol 12, Iss 8, p 1404 (2024) |
op_relation |
https://www.mdpi.com/2077-1312/12/8/1404 https://doaj.org/toc/2077-1312 doi:10.3390/jmse12081404 2077-1312 https://doaj.org/article/fa6ca9f02ab743f39cff73d8f4d02b67 |
op_doi |
https://doi.org/10.3390/jmse12081404 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
12 |
container_issue |
8 |
container_start_page |
1404 |
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1810459066049232896 |