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WACCM: The High-Top Model - CESM - UCAR

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50N<br />

EQ<br />

50S<br />

Stratospheric Sulfate Surface Area Density Climatology<br />

50N<br />

EQ<br />

50S<br />

El Chichón<br />

17°N, 93°W<br />

Agung<br />

8°S, 115°E<br />

Sulfate Surface Area Density, 43 hPa<br />

Mt Pinatubo:<br />

15°N, 120°E<br />

1960 1970 1980 1990 2000 2010<br />

Krakatau:<br />

6°S, 105°E,<br />

27-28 Aug 1883<br />

1880 1885 1890 1895 1900 1905 1910<br />

Santa<br />

Maria:<br />

14°N,<br />

91°W,<br />

24 Oct.<br />

1902<br />

• Observations<br />

used: SAGE I,<br />

SAGE II, SAM II,<br />

and SME<br />

instruments.<br />

• Non-volcanic<br />

periods filled<br />

with monthly<br />

mean of<br />

1998-2002<br />

values.<br />

• Used Pinatubo<br />

aerosol for<br />

Krakatau and<br />

Santa Maria.

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