Climate Change - Sea level

Copyright © 2007-2010 Ken Polsson
internet e-mail: ken@kpolsson.com
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URL: http://kpolsson.com/climate/

This page presents notes on scientific published articles related to Sea level.
Article: "Direct Determination of the Timing of Sea Level Change During Terminiation 11."
  • Sea level 136,000 years ago was 18 metres below present sea level; 168,000 years ago was 38 metres below.
  • These are in conflict with Milankovitch theory predictions of orbital forcing of glacial cycles.

Source: Science, Volume 295, Number 5553.
Date: 2002 January 11
Article: "Rapid Wastage of Alaska Glaciers and Their Contribution to Rising Sea Level."
  • Average rate of thickness change of Alaska glaciers from mid-1950s to mid-1990s was -0.52 metres per year.
  • Estimated total volume change of Alaska glaciers from 1950s to 1990s is -52 cubic Km per year, contributing 0.14 mm per year to sea level rise.
  • Rate of change from small group of glaciers from mid-1990s to 2001 indicate -1.8 metres epr year average rate of thinning, suggesting 0.27 mm per year rate of sea level rise in past decade from all Alaska glaciers.

Source: Science, Volume 297, Number 5580.
Date: 2002 July 19
Article: "Acceleration of Greenhouse ice mass loss in spring 2004."
  • From April 2002 to April 2006, Greenland ice mass loss detected as 248 +/- 36 km3/year, equivalent to global sea level rise of 0.4-0.6 mm/year (5 cm in 100 years if constant).
  • Spring 2004 saw a dramatic change in the rate of ice mass loss. Too early to tell if this is a true long-term increase.

Source: Nature, Volume 443, Number 7109.
Date: 2006 September 21
Article: "Recent Greenland Ice Mass Loss by Drainage System from Satellite Gravity Observations."
  • From 2003 to 2005, ice sheet lost net 100 gigatons per year.
  • Greenland ice sheet mass loss contributes 0.28 mm/year to global sea level rise, about ten percent of observed total rise.

Source: Science, Volume 314, Number 5803.
Date: 2006 November 24
Article: "A Semi-Empirical Approach to Projecting Future Sea-Level Rise."
  • The rate of sea-level rise is roughly proportional to the magnitude of warming of near-surface air temperature since pre-Industrial Age.
  • Rate constant at 3.4mm/year per degree Celcius.
  • Sea-level rise by year 2100 over 1990 level is projected to be 0.5 to 1.4 mm.

Source: Science, Volume 315, Number 5810.
Date: 2007 January 19
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Last updated: 2010 Apr 8.
Global Warming and Climate Change
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URL: http://kpolsson.com/climate)

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