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APPENDIX A 



SUMMARY OF SEA LEVEL RISE SCENARIOS INCLUDING SPECIAL 

 CASES OF INCREASED VOLCANIC ACTIVITY AND 

 CHANGES IN SOLAR RADIATION 



The abbreviations used in the following tables are explained below 

 CO p Scenario 



no growth — constant (1975) emissions 



low growth — low (1.674 %) annual growth in emissions 

 medium growth — medium (2.074 %) annual growth in emissions 

 high growth — high (2.345 %) annual growth in emissions 



Thermal Sensitivity ( T e ) 



low — 1.5°C per doubling of CO2 

 medium — 3.0°C per doubling of CO2 

 high — 4.5°C per doubling of C0 2 



CH4 Scenarios 



no growth -- constant 1980 concentrations 



vl (very low growth) -- 0.5 % annual compound growth 



lg (low growth) -- 1.0 % annual compound growth 



med (medium growth) — 1.5 % annual compound growth 



hg (high growth) — 2.0 % annual compound growth 



vh (very high growth) -- 2.5 % annual compound growth 



N? Scenarios 



no growth -- constant 1980 atmospheric concentrations 



vl (very low growtn) — 0.1 % annual compound growth 



lg (low growth) -- 0.2 % annual compound growth 



med (medium growth) — 0.45 % annaul compound growth 



hg (high growth) — 0.70 % annual compound growth 



vh (very high growth) — 0.90 % annual compound growth 



CFC Scenarios 



no growth -- constant 1980 emissions 



lg (low growth) -- 1.8 million kg annual growth to 2020 



med (medium growth) -- 6.4 million kg annual growth to 2020 



hg (high growth) — 9.8 million kg annual growth to 2020 



vg (very high growth) -- 11.6 million kg annual growth to 2100 



All Scenarios assume that emissions are constant after 2020 and that 



the half-lives of CF 2 Cl2 (CFC-12) and CFCI3 (CFC-11) are 120 



and 60 years (i.e., "lifetimes" are 150 and 75 years) respectively. 



