Abstract
Thermosteric contribution of warming oceans to the global sea level variations during the last century was evaluated at globally distributed 27 tide gauge stations with records over 80 years. The assessment was made using a recently proposed lagged model inclusive of a sea level trend, long and decadal periodicities, and lagged sea surface temperature measurements. The new model solutions revealed that almost all the long period periodic sea level changes experienced at these stations can be attributed to the lagged thermosteric effects of the warming oceans during the 20th century. Meanwhile, statistically significant (p<0.05) anomalous thermosteric contributions to the secular trends, some of them as large as 1.0±0.2 mm/yr, were detected at six tide gauge stations close to the equator and open seas. The findings of this study revealed a more complex impact of the warming oceans at the globally distributed tide gauge stations other than a secular contribution to the sea level trends of the previous studies.
References
Bindoff N.L., J.Willebrand, V. Artale, A, Cazenave, J. Gregory, S. Gulev, K. Hanawa, C. Le Quéré, S. Levitus, Y. Nojiri, C.K. Shum, L.D. Talley and A. Unnikrishnan (2007) Observations: Oceanic Climate Change and Sea Level. In: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change [Solomon, S., D. Qin, M. Manning, Z. Chen, M. Marquis, K.B. Averyt, M. Tignor and H.L. Miller (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.Search in Google Scholar
Iz H.B., 2016a, The Effect ofWarming Oceans at a Tide Gauge Station, Journal of Geodetic Science, Vol. 6, pp. 69–79.10.1515/jogs-2016-0005Search in Google Scholar
Iz H.B., 2016b, Is the Global Sea Temperature Rise Accelerating? (under review).Search in Google Scholar
Iz H.B., 2015, More Confounders at Global and Decadal Scales in Detecting Recent Sea Level Accelerations, Journal of Geod. Sci., Vol., pp. 192–198.Search in Google Scholar
İz H.B., 2014, Sub and super harmonics of the lunar nodal tides and the solar radiative forcing in global sea level changes, Journal of Geod. Sci., Vol. 4, pp. 150–165.Search in Google Scholar
Jevrejeva S., J. C. Moore, and A. Grinsted, 2008, Relative importance of mass and volume changes to global sea level rise, J. Geophys. Res., Vol 113, D08105.10.1029/2007JD009208Search in Google Scholar
Kopp R.E., A.C. Kemp, K. Bittermann, B.P. Horton, J.P. Donnelly, W.R. Gehrels, C.C. Hay, J.X. Mitrovica, E.D. Morrow, and S. Rahmstorf, 2016, Temperature-driven global sea-level variability in the Common Era. Proceedings of the National Academy of Sciences.10.1073/pnas.1517056113Search in Google Scholar PubMed PubMed Central
Lombard A.T, A. Cazenavea, K. DoMinha, C. Cabanes, R. S. Nerem, 2005, Thermosteric sea level rise for the past 50 years; comparison with tide gauges and inference on water mass contribution, Global and Planetary Change 48: 303–312.10.1016/j.gloplacha.2005.02.007Search in Google Scholar
Met Oflce Hadley Centre, 2015, HadSST.3.1.1.0 Global TS Monthly http://www.metoflce.gov.uk/hadobs/hadsst3/data/download. html.Downloadedon5/11/2015.Search in Google Scholar
Permanent Service for Mean Sea Level, 2016, Tide Gauge Data, Retrieved February 2016 from http://www.psmsl.org/data/ obtaining/.Search in Google Scholar
Rahmstorf S., 2007, A semi-empirical approach to projecting future sea-level rise., Science 315, 368 Science. 2007 Jan 19;315(5810):368-70. Epub 2006 Dec 14.Search in Google Scholar
Sturges W. and B.G. Hong, 2001, in Sea Level Rise: History and Consequences, ed. by Bruce Douglas, Mark T Kearney, Stephen P. Leatherman.Search in Google Scholar
s Vermeer M. and Rahmstorf, S., 2009, Global sea level linked to global temperature. Proceedings of the National Academy of Science of the USA, 106, 21527–21532. 10.1073/pnas.0907765106Search in Google Scholar PubMed PubMed Central
© 2016 H. Bâki Iz
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