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The Impact of Black Carbon on Arctic Climate - Atmospheric Chemistry

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BC c<strong>on</strong>centrati<strong>on</strong>, ng/kg<br />

1000<br />

Alert<br />

Observati<strong>on</strong><br />

100<br />

Improved<br />

10<br />

BC surface c<strong>on</strong>centrati<strong>on</strong>, ng/m 3<br />

200 Alert (1989-2005)<br />

150<br />

100<br />

Observati<strong>on</strong>s<br />

Original run<br />

Dry depositi<strong>on</strong> run<br />

In-cloud run<br />

Enhanced run<br />

1.0<br />

Original<br />

50<br />

0.1<br />

0<br />

1000<br />

Barrow<br />

120<br />

Barrow (1988-2007)<br />

100<br />

90<br />

10<br />

60<br />

1.0<br />

30<br />

0.1<br />

0<br />

1000<br />

Zeppelin<br />

120<br />

Zeppelin (1998-2008)<br />

100<br />

90<br />

10<br />

60<br />

1.0<br />

30<br />

0.1<br />

FJA M M J J A S O N D<br />

0<br />

FJA M M J J A S O N D<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

36

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