Is There a 60-year Oscillation in Global Mean Sea Level?
[1] We examine long tide gauge records in every ocean basin to examine whether a quasi 60-year oscillation observed in global mean sea level (GMSL) reconstructions reflects a true global oscillation, or an artifact associated with a small number of gauges. We find that there is a significant oscilla...
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ftunisfloridatam:oai:digitalcommons.usf.edu:msc_facpub-2401 2023-05-15T17:30:55+02:00 Is There a 60-year Oscillation in Global Mean Sea Level? Chambers, Don P. Merrifield, Mark A. Nerem, R. Steven 2012-01-01T08:00:00Z application/pdf https://digitalcommons.usf.edu/msc_facpub/1373 https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=2401&context=msc_facpub unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/msc_facpub/1373 https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=2401&context=msc_facpub default Marine Science Faculty Publications global sea level multidecadal oscillation sea level acceleration sea level rise Life Sciences article 2012 ftunisfloridatam 2022-01-20T18:40:02Z [1] We examine long tide gauge records in every ocean basin to examine whether a quasi 60-year oscillation observed in global mean sea level (GMSL) reconstructions reflects a true global oscillation, or an artifact associated with a small number of gauges. We find that there is a significant oscillation with a period around 60-years in the majority of the tide gauges examined during the 20th Century, and that it appears in every ocean basin. Averaging of tide gauges over regions shows that the phase and amplitude of the fluctuations are similar in the North Atlantic, western North Pacific, and Indian Oceans, while the signal is shifted by 10 years in the western South Pacific. The only sampled region with no apparent 60-year fluctuation is the Central/Eastern North Pacific. The phase of the 60-year oscillation found in the tide gauge records is such that sea level in the North Atlantic, western North Pacific, Indian Ocean, and western South Pacific has been increasing since 1985–1990. Although the tide gauge data are still too limited, both in time and space, to determine conclusively that there is a 60-year oscillation in GMSL, the possibility should be considered when attempting to interpret the acceleration in the rate of global and regional mean sea level rise. Article in Journal/Newspaper North Atlantic Digital Commons University of South Florida (USF) Pacific Indian |
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Digital Commons University of South Florida (USF) |
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topic |
global sea level multidecadal oscillation sea level acceleration sea level rise Life Sciences |
spellingShingle |
global sea level multidecadal oscillation sea level acceleration sea level rise Life Sciences Chambers, Don P. Merrifield, Mark A. Nerem, R. Steven Is There a 60-year Oscillation in Global Mean Sea Level? |
topic_facet |
global sea level multidecadal oscillation sea level acceleration sea level rise Life Sciences |
description |
[1] We examine long tide gauge records in every ocean basin to examine whether a quasi 60-year oscillation observed in global mean sea level (GMSL) reconstructions reflects a true global oscillation, or an artifact associated with a small number of gauges. We find that there is a significant oscillation with a period around 60-years in the majority of the tide gauges examined during the 20th Century, and that it appears in every ocean basin. Averaging of tide gauges over regions shows that the phase and amplitude of the fluctuations are similar in the North Atlantic, western North Pacific, and Indian Oceans, while the signal is shifted by 10 years in the western South Pacific. The only sampled region with no apparent 60-year fluctuation is the Central/Eastern North Pacific. The phase of the 60-year oscillation found in the tide gauge records is such that sea level in the North Atlantic, western North Pacific, Indian Ocean, and western South Pacific has been increasing since 1985–1990. Although the tide gauge data are still too limited, both in time and space, to determine conclusively that there is a 60-year oscillation in GMSL, the possibility should be considered when attempting to interpret the acceleration in the rate of global and regional mean sea level rise. |
format |
Article in Journal/Newspaper |
author |
Chambers, Don P. Merrifield, Mark A. Nerem, R. Steven |
author_facet |
Chambers, Don P. Merrifield, Mark A. Nerem, R. Steven |
author_sort |
Chambers, Don P. |
title |
Is There a 60-year Oscillation in Global Mean Sea Level? |
title_short |
Is There a 60-year Oscillation in Global Mean Sea Level? |
title_full |
Is There a 60-year Oscillation in Global Mean Sea Level? |
title_fullStr |
Is There a 60-year Oscillation in Global Mean Sea Level? |
title_full_unstemmed |
Is There a 60-year Oscillation in Global Mean Sea Level? |
title_sort |
is there a 60-year oscillation in global mean sea level? |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2012 |
url |
https://digitalcommons.usf.edu/msc_facpub/1373 https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=2401&context=msc_facpub |
geographic |
Pacific Indian |
geographic_facet |
Pacific Indian |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Marine Science Faculty Publications |
op_relation |
https://digitalcommons.usf.edu/msc_facpub/1373 https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=2401&context=msc_facpub |
op_rights |
default |
_version_ |
1766128062197399552 |