PIES and altimeter derived time series in the eastern North Atlantic (47°N) and in the North Atlantic at the Mid-Atlantic Ridge

DOI

For quantification of the exchange of water between the subtropical and subpolar regime in the eastern North Atlantic, data from inverted echo sounders (PIES) that were deployed in 2016-2017 at the 47/48°N transect is used to calculate meridional baroclinic and barotropic transport time series. The baroclinic PIES transport time series is extended to the period 1993-2017 using altimeter data. Furthermore, the correlation between altimeter and PIES derived sea surface height fluctuations is studied using data from PIES deployed at the 47/48°N transect and parallel to the Mid-Atlantic Ridge. In our analysis, we use the presented data as well as data published in Roessler et al. (2015) and Rhein et al. (2019). We find a mean PIES derived meridional northward transport of 12.2 Sv in 2016-2017 and a mean altimeter derived meridional northward transport of 9.1 Sv in 1993-2017. Additionally, we find a significant positive decadal trend in the northward transport of 2.0 Sv ± 1.5 Sv (eastern boundary current not included). This trend is opposite to the negative decadal trend of -7.1 Sv ± 3.9 Sv (western boundary current included) in the northward transport found by Rhein et al. (2019).

Identifier
DOI https://doi.org/10.1594/PANGAEA.925118
Related Identifier IsSupplementTo https://doi.org/10.1029/2020JC016693
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.925118
Provenance
Creator Nowitzki, Hannah ORCID logo; Rhein, Monika ORCID logo; Roessler, Achim ORCID logo; Kieke, Dagmar ORCID logo; Mertens, Christian ORCID logo
Publisher PANGAEA
Publication Year 2020
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Bundled Publication of Datasets; Collection
Format application/zip
Size 10 datasets
Discipline Earth System Research
Spatial Coverage (-36.861W, 48.110S, -15.004E, 52.508N)
Temporal Coverage Begin 1993-01-01T00:00:00Z
Temporal Coverage End 2017-12-31T00:00:00Z