Sea Level Rise during past 40 Years Determined from Satellite and in Situ Observations
The 3.2 ± 0.2 millimeter per year global mean sea level rise observed by the Topex/Poseidon satellite over 1993-98 is fully explained by thermal expansion of the oceans. For the period 1955-96, sea level rise derived from tide gauge data agrees well with thermal expansion computed at the same locati...
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Veröffentlicht in: | Science (American Association for the Advancement of Science) 2001-10, Vol.294 (5543), p.840-842 |
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description | The 3.2 ± 0.2 millimeter per year global mean sea level rise observed by the Topex/Poseidon satellite over 1993-98 is fully explained by thermal expansion of the oceans. For the period 1955-96, sea level rise derived from tide gauge data agrees well with thermal expansion computed at the same locations. However, we find that subsampling the thermosteric sea level at usual tide gauge positions leads to a thermosteric sea level rise twice as large as the "true" global mean. As a possible consequence, the 20th century sea level rise estimated from tide gauge records may have been overestimated. |
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For the period 1955-96, sea level rise derived from tide gauge data agrees well with thermal expansion computed at the same locations. However, we find that subsampling the thermosteric sea level at usual tide gauge positions leads to a thermosteric sea level rise twice as large as the "true" global mean. As a possible consequence, the 20th century sea level rise estimated from tide gauge records may have been overestimated.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.1063556</identifier><identifier>PMID: 11679666</identifier><identifier>CODEN: SCIEAS</identifier><language>eng</language><publisher>Washington, DC: American Society for the Advancement of Science</publisher><subject>Climate ; Earth, ocean, space ; Exact sciences and technology ; External geophysics ; Global warming ; Marine ; Measurement ; Nuns ; Ocean temperature ; Ocean tides ; Oceans ; Physics of the oceans ; Salinity ; Scientific Concepts ; Scientific satellites ; Sea level ; Sea level rise ; Sea water ; Seas ; Surface waves, tides and sea level. 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For the period 1955-96, sea level rise derived from tide gauge data agrees well with thermal expansion computed at the same locations. However, we find that subsampling the thermosteric sea level at usual tide gauge positions leads to a thermosteric sea level rise twice as large as the "true" global mean. As a possible consequence, the 20th century sea level rise estimated from tide gauge records may have been overestimated.</description><subject>Climate</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>Global warming</subject><subject>Marine</subject><subject>Measurement</subject><subject>Nuns</subject><subject>Ocean temperature</subject><subject>Ocean tides</subject><subject>Oceans</subject><subject>Physics of the oceans</subject><subject>Salinity</subject><subject>Scientific Concepts</subject><subject>Scientific satellites</subject><subject>Sea level</subject><subject>Sea level rise</subject><subject>Sea water</subject><subject>Seas</subject><subject>Surface waves, tides and sea level. 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Science)</jtitle><addtitle>Science</addtitle><date>2001-10-26</date><risdate>2001</risdate><volume>294</volume><issue>5543</issue><spage>840</spage><epage>842</epage><pages>840-842</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><coden>SCIEAS</coden><abstract>The 3.2 ± 0.2 millimeter per year global mean sea level rise observed by the Topex/Poseidon satellite over 1993-98 is fully explained by thermal expansion of the oceans. For the period 1955-96, sea level rise derived from tide gauge data agrees well with thermal expansion computed at the same locations. However, we find that subsampling the thermosteric sea level at usual tide gauge positions leads to a thermosteric sea level rise twice as large as the "true" global mean. As a possible consequence, the 20th century sea level rise estimated from tide gauge records may have been overestimated.</abstract><cop>Washington, DC</cop><pub>American Society for the Advancement of Science</pub><pmid>11679666</pmid><doi>10.1126/science.1063556</doi><tpages>3</tpages></addata></record> |
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subjects | Climate Earth, ocean, space Exact sciences and technology External geophysics Global warming Marine Measurement Nuns Ocean temperature Ocean tides Oceans Physics of the oceans Salinity Scientific Concepts Scientific satellites Sea level Sea level rise Sea water Seas Surface waves, tides and sea level. Seiches Thermal expansion Tides Time series Water |
title | Sea Level Rise during past 40 Years Determined from Satellite and in Situ Observations |
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