Sea level has risen by 20 mm from 1955-2008February 17th, 2009 - 3:14 pm ICT by ANI
Washington, Feb 17 (ANI): In a new research, a scientist has determined that the observed ocean warming has contributed approximately 20 mm to global average sea level for the time period 1955-2008.
Based on a detailed analysis of ocean vertical temperature profiles for the 1955-2008 period, Sydney Levitus, lead author of the research paper, talks about the change of global average sea level induced by the observed warming of the world ocean during the past 53 years.
The warming of the world ocean is consistent with the amount of warming expected as a result of the observed increase in greenhouse gases in earths atmosphere.
The observed ocean warming has contributed approximately 20 mm to global average sea level during this time period.
This is simply the phenomenon of salt water expanding when it is warmed. This expansion effect (or contraction if cooling occurs) is known as the thermosteric component of sea level change.
This estimate is similar to previous estimates even after recently identified instrumentals errors are corrected for and additional historical data has been added to the scientists database.
The thermosteric component of sea level change is only one of several phenomena affecting sea level.
Others include the melting of glaciers, the transfer of liquid water between the continents and oceans, and the impoundment of water by dams.
In the research paper, Levitus will also describe the changes in global sea level, resulting from changes in the distribution of temperature and freshwater in the world ocean during the same 1955 2008 time scale. (ANI)
- Strong currents accelerate Antarctic ice melt - Jun 27, 2011
- 2010 tied for warmest year on record - Jan 13, 2011
- Reduced sea ice, warming elevate Arctic temperatures - Jul 08, 2012
- China sea levels to rise up to 130mm - Nov 16, 2011
- Global warming will push up sea level - Jun 25, 2012
- Pumping groundwater may cause rise in sea level: Study - May 09, 2012
- World's water cycle has intensified - Apr 17, 2010
- Sea levels may rise much higher, says fossil study - Jul 16, 2012
- Shrinking snow and ice cover 'making global warming worse' - Jan 19, 2011
- Karakoram glaciers unaffected by global warming - Jul 10, 2012
- Scientists estimate sea level rise by studying past carbon dioxide levels - May 02, 2011
- 'Southern ocean re-routes 40 percent of carbon emissions' - Jul 31, 2012
- Arctic Ocean water is 'warmest it's been for more than 2,000 years' - Feb 01, 2011
- Earth's temperature up by one degree Celsius since 1950s - Nov 13, 2011
- Greenland ice most vulnerable to global warming - Mar 12, 2012
Tags: continents and oceans, contraction, dams, global sea level, greenhouse gases, impoundment, instrumentals, liquid water, melting of glaciers, phenomena, phenomenon, research paper, salt water, scientist, sea level change, sydney levitus, time period, time scale, vertical temperature profiles, world ocean