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Independent Summary for Policymakers

880 bytes added, 20:01, 28 December 2007
SW: →‎Sea level rise: Add citations ISPM, AR4
===Sea level rise===
The ISPM overview states: "Models project an increase of roughly 20 centimeters over the next 100 years, if accompanied by a warming of 2.0 to 4.5 degrees Celsius."
 
This corresponds to a projected range of only '''10-30 cm''' sea level rise, as elaborated in the ISPM: "Models project that a doubling of CO2 levels in the atmosphere (A1B scenario), if accompanied by a warming of 2-?4.5°C, will cause a sea level increase of about 20 centimeters, plus or minus 10 cm over the next 100 years." [ISPM 5.3d]
 
However, the actual projected range for sea level rise for the A1B scenario is in fact '''21-48 cm'''. [AR4 10 ES, 10.6.5, Figs. 10.32 & 10.33]. The lower ISPM range would appear to be correspond to the projected rise from thermal expansion alone without any contribution from net land ice melt, given the ISPM citation of AR4 Fig. 10.6.1, (now renumbered AR4 10.31).
==External links==
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