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EPA NRC/NAS MIT EXXON<br />

• AIRBORNE C0 2 FRACTION 0.6 to 0.8 0.4 - 0.6 0.4 to 0.6 0.53<br />

RESULTS/EFFECTS<br />

• TIME FOR C0 o DOUBLING<br />

L.<br />

• AVERAGE TEMPERATURE RISE<br />

2060<br />

3 0 C<br />

2075<br />

O ^ 2 C 1.5-4.5 C<br />

2090<br />

i.3 - s.rc<br />

« OTHER GASES IMPACT -1.6 to 3. 3 0 C M 0 C<br />

• SEA LEVEL RISE<br />

t PRECIPITATION<br />

150 cm, 2040<br />

215 cm, 2100<br />

- . i' •' 1<br />

POSSIBLE MAJOR<br />

CHANGES<br />

70 cm 2080<br />

(3-4 0 C rise)<br />

ii!'<br />

DRIER MIDWEST SIGNIFICANT, BUT<br />

UNPREDICTABLE<br />

• AGRICULTURAL PLUSES & MINUSES BENEFITS WILL SIGNIFICANT, BUT<br />

BALANCE DEBITS UNPREDICTABLE<br />

9 IMPACT OF ALTERNATE<br />

ENERGY SOURCES<br />

SMALL INSENSITIVE LARGE INSENSITIVE<br />

App. 291

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