Version 1
: Received: 21 February 2024 / Approved: 21 February 2024 / Online: 21 February 2024 (11:53:03 CET)
How to cite:
Morozov, E.G.; Frey, D.I.; Salyuk, P.A.; Budyansky, M.V. Amazon Plume in the Western Tropical North Atlantic. Preprints2024, 2024021225. https://doi.org/10.20944/preprints202402.1225.v1
Morozov, E.G.; Frey, D.I.; Salyuk, P.A.; Budyansky, M.V. Amazon Plume in the Western Tropical North Atlantic. Preprints 2024, 2024021225. https://doi.org/10.20944/preprints202402.1225.v1
Morozov, E.G.; Frey, D.I.; Salyuk, P.A.; Budyansky, M.V. Amazon Plume in the Western Tropical North Atlantic. Preprints2024, 2024021225. https://doi.org/10.20944/preprints202402.1225.v1
APA Style
Morozov, E.G., Frey, D.I., Salyuk, P.A., & Budyansky, M.V. (2024). Amazon Plume in the Western Tropical North Atlantic. Preprints. https://doi.org/10.20944/preprints202402.1225.v1
Chicago/Turabian Style
Morozov, E.G., Pavel A. Salyuk and Maxim V. Budyansky. 2024 "Amazon Plume in the Western Tropical North Atlantic" Preprints. https://doi.org/10.20944/preprints202402.1225.v1
Abstract
Measurements of temperature and salinity in the Amazon River plume in the open ocean of the western tropical North Atlantic are considered. The measurements were carried out using the AML CTD probe in the upper layer and a flow-through system that measures salinity and turbidity of seawater while the vessel is on the way. Additionally, archive oceanographic data from the WOD18 database, data of satellite altimetry measurements (AVISO), and satellite salinity data from Aquarius and SMOS were used. It is shown that the width of the Amazon plume is about 300–400 km, the depth of desalination is from 50 to 100 m. Surface salinity decreases compared to the background (36 PSU) by 0.5 PSU in February and more than by 3 PSU in September during the period of maximum development of the plume, which is determined from satellite measurements of surface salinity. Lagrangian modeling of the back-in-time advection of passive markers simulating freshwater particles was carried out. It was shown that the source of fresh water in the measurement area is the discharge of the Amazon.
Keywords
desalination of the surface layer, intra-annual plume variability, CTD casts, continuous recording, Lagrangian analysis
Subject
Environmental and Earth Sciences, Oceanography
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
