Salinity Change in the Subtropical Atlantic: Secular Increase and Teleconnections to the North Atlantic Oscillation
Recent studies comparing shipboard data between the 1950's and the 1990's have shown significant, heterogeneous adjustments of the temperature-salinity structure of the N. Atlantic Ocean. Here, we present proxy records of temperature and salinity from aragonite sclerosponge skeletons, exte...
Main Authors: | , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Digital Commons @ University of South Florida
2005
|
Subjects: | |
Online Access: | https://digitalcommons.usf.edu/msc_facpub/2416 https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=3423&context=msc_facpub |
id |
ftunisfloridatam:oai:digitalcommons.usf.edu:msc_facpub-3423 |
---|---|
record_format |
openpolar |
spelling |
ftunisfloridatam:oai:digitalcommons.usf.edu:msc_facpub-3423 2023-05-15T17:29:06+02:00 Salinity Change in the Subtropical Atlantic: Secular Increase and Teleconnections to the North Atlantic Oscillation Rosenheim, Brad E. Swart, Peter K. Thorrold, Simon R. Eisenhauer, Anton Willenz, Philippe 2005-01-01T08:00:00Z application/pdf https://digitalcommons.usf.edu/msc_facpub/2416 https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=3423&context=msc_facpub unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/msc_facpub/2416 https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=3423&context=msc_facpub default Marine Science Faculty Publications Life Sciences article 2005 ftunisfloridatam 2022-04-07T17:43:21Z Recent studies comparing shipboard data between the 1950's and the 1990's have shown significant, heterogeneous adjustments of the temperature-salinity structure of the N. Atlantic Ocean. Here, we present proxy records of temperature and salinity from aragonite sclerosponge skeletons, extending existing records of the Salinity Maximum Waters (SMW) of the N. Atlantic back to 1890. These proxy records show secular temperature increases of 1.6–2.0°C, higher than published global averages, and salinity increases of 0.35–0.5 psu, smaller than short-term secular trends recently measured. Salinity reconstructions vary more significantly on the decadal scale, showing changes that are related to low-frequency variations of the North Atlantic Oscillation (NAO). On both secular and decadal time scales, the records indicate significant thermohaline changes in the SMW, either via forcing at the surface or increasing depths of density surfaces in the Bahamas Article in Journal/Newspaper North Atlantic North Atlantic oscillation Digital Commons University of South Florida (USF) |
institution |
Open Polar |
collection |
Digital Commons University of South Florida (USF) |
op_collection_id |
ftunisfloridatam |
language |
unknown |
topic |
Life Sciences |
spellingShingle |
Life Sciences Rosenheim, Brad E. Swart, Peter K. Thorrold, Simon R. Eisenhauer, Anton Willenz, Philippe Salinity Change in the Subtropical Atlantic: Secular Increase and Teleconnections to the North Atlantic Oscillation |
topic_facet |
Life Sciences |
description |
Recent studies comparing shipboard data between the 1950's and the 1990's have shown significant, heterogeneous adjustments of the temperature-salinity structure of the N. Atlantic Ocean. Here, we present proxy records of temperature and salinity from aragonite sclerosponge skeletons, extending existing records of the Salinity Maximum Waters (SMW) of the N. Atlantic back to 1890. These proxy records show secular temperature increases of 1.6–2.0°C, higher than published global averages, and salinity increases of 0.35–0.5 psu, smaller than short-term secular trends recently measured. Salinity reconstructions vary more significantly on the decadal scale, showing changes that are related to low-frequency variations of the North Atlantic Oscillation (NAO). On both secular and decadal time scales, the records indicate significant thermohaline changes in the SMW, either via forcing at the surface or increasing depths of density surfaces in the Bahamas |
format |
Article in Journal/Newspaper |
author |
Rosenheim, Brad E. Swart, Peter K. Thorrold, Simon R. Eisenhauer, Anton Willenz, Philippe |
author_facet |
Rosenheim, Brad E. Swart, Peter K. Thorrold, Simon R. Eisenhauer, Anton Willenz, Philippe |
author_sort |
Rosenheim, Brad E. |
title |
Salinity Change in the Subtropical Atlantic: Secular Increase and Teleconnections to the North Atlantic Oscillation |
title_short |
Salinity Change in the Subtropical Atlantic: Secular Increase and Teleconnections to the North Atlantic Oscillation |
title_full |
Salinity Change in the Subtropical Atlantic: Secular Increase and Teleconnections to the North Atlantic Oscillation |
title_fullStr |
Salinity Change in the Subtropical Atlantic: Secular Increase and Teleconnections to the North Atlantic Oscillation |
title_full_unstemmed |
Salinity Change in the Subtropical Atlantic: Secular Increase and Teleconnections to the North Atlantic Oscillation |
title_sort |
salinity change in the subtropical atlantic: secular increase and teleconnections to the north atlantic oscillation |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2005 |
url |
https://digitalcommons.usf.edu/msc_facpub/2416 https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=3423&context=msc_facpub |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Marine Science Faculty Publications |
op_relation |
https://digitalcommons.usf.edu/msc_facpub/2416 https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=3423&context=msc_facpub |
op_rights |
default |
_version_ |
1766122693361401856 |