Policy Implications of Greenhouse Warming Mitigation, Adaptation, and the Science Base (1992) / Chapter Skim
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16 Sea Level
16 Sea Level
Pages 140-144
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From page 140... ...
The direct causes of these variations include vertical motions of the land to which the tide gauge or other measuring device is attached, and changes in the volume of sea water in which the gauge is immersed. Differences in atmospheric pressure, water runoff from land, winds, ocean currents, and the density of sea water all cause spatial and temporal variations in sea level in comparison to the "geoid" (the surface of constant gravitational potential corresponding, on average, to the global mean sea surface)
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From page 141... ...
Differences in water temperature, or in a combination of temperature and salinity, account very well for seasonal and interannual variations in sea level (National Research Council, 1990~. This thermal expansion is not large enough, however, to account for the changes over tens of thousands of years.
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From page 142... ...
PROJECTING FUTURE SEA LEVEL RISE Various estimates of future sea level rise have been made (Intergovernmental Panel on Climate Change, 19901. In general, most of these studies foresee a sea level rise of between 10 and 30 cm (4 and 12 inches)
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From page 143... ...
model an upwelling rate balances some of the transfer into the deep oceans. The PD model transports heat relatively rapidly into the oceans, which slows the atmospheric temperature rise but increases the rate of sea level rise.
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From page 144... ...
National Research Council.
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