Trends in the salinity of the North Atlantic waters according to ocean reanalysis data in 1980–2011
- Authors: Sukhonos P.A.1, Diansky N.A.2,3,4
-
Affiliations:
- Institute of Natural and Technical Systems
- Lomonosov Moscow State University
- Marchuk Institute of Numerical Mathematics of the RAS
- Zubov State Oceanographic Institute
- Issue: Vol 61, No 2 (2025)
- Pages: 158-169
- Section: Articles
- URL: https://journal-vniispk.ru/0002-3515/article/view/296441
- DOI: https://doi.org/10.31857/S0002351525020038
- EDN: https://elibrary.ru/GKNIOI
- ID: 296441
Cite item
Abstract
Long-term trends in the North Atlantic Ocean (0°–70°N, 8°–80°W) salinity are estimated from several ocean reanalyses and objective analyses over the period 1980–2011. The obtained estimates are based on the application of a nonparametric method of regression analysis (quantile regression) to the monthly ocean salinity for a quantile value of 0.5. During the period under consideration, in the latitude band 0°–15° N in the 10–50 m layer, salinity decreased by 0.17 ± 0.10 PSU. In the latitude band 20°–35° N the increase in salinity in the 10–400 m layer is 0.08 ± 0.03 PSU. In the eastern part of the Subtropical Atlantic (30°–40° N, 25°–45° W), significant salinization of the upper 400 m layer occurs in all months. This means a northwestward expansion of the high salinity region in the subtropics. In the western part of the subpolar gyre, salinity in the upper 400 m layer increased by 0.20 ± 0.05 PSU over this 32-year period.
Keywords
About the authors
P. A. Sukhonos
Institute of Natural and Technical Systems
Author for correspondence.
Email: pasukhonis@mail.ru
Russian Federation, Lenina str., 28, Sevastopol, 299011
N. A. Diansky
Lomonosov Moscow State University; Marchuk Institute of Numerical Mathematics of the RAS; Zubov State Oceanographic Institute
Email: pasukhonis@mail.ru
Russian Federation, Leninskie gory, 1, bld. 2, GSP-1, Moscow, 119991; Gubkina str., 8, Moscow, 119333; Kropotkinskiy per., 6, bld. 1, Moscow, 119034
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