Sea level trends at locations of the United States with more than 100 years of recording

Albert Parker ()

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2013, vol. 65, issue 1, 1021 pages

Abstract: The paper presents the sea level rises (SLR) computed for the United States tide gauges with more than 100 years of recording. It is shown that the monthly sea levels oscillate about an almost linear longer-term trend with important multidecadal periodicities. The SLR time history is computed by linear fitting of 20, 30 and 60 years of data up to a given time (SLR 20 , SLR 30 and SLR 60 ) and is compared to the value obtained by considering all the data. It is shown that SLR 60 has smaller oscillations, while SLR 20 and SLR 30 have much larger and frequent fluctuations. While SLR 60 may oscillate ±10–30 % about the latest longer-term value, SLR 30 may fluctuate ±50–100 % and SLR 20 ± 100–200 %. The values obtained by considering all the data with a minimum of 60 years (SLR A ) also fluctuate ±5–15 % about the latest longer-term value. This indicates the need to use the time history of SLR 60 or SLR A when the record is longer than 60 years to assess the accelerating trend. For all the stations, the sea levels regularly oscillate about the linear longer-term trend, and if acceleration has to be computed, this is eventually negative, that is, the SLR is reducing. Copyright Springer Science+Business Media B.V. 2013

Keywords: Sea level rise; Sea level acceleration; Climate change; Sea level oscillations; Teleconnections (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1007/s11069-012-0400-5

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