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2008 Annual Report - NASA Airborne Science Program

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ARCTAS<br />

<strong>Science</strong> Focus: Atmospheric Composition<br />

Sponsor: J. Crawford & H. Maring, <strong>NASA</strong> HQ<br />

Location: Alaska, Canada, Greenland<br />

The Arctic Research of the<br />

Composition of the Troposphere<br />

from Aircraft and Satellites<br />

(ARCTAS) field campaign<br />

represented <strong>NASA</strong>’s largest<br />

commitment to atmospheric research in<br />

support of the International Polar Year<br />

(IPY). Sponsored by <strong>NASA</strong>’s Tropospheric<br />

Chemistry and Radiation <strong>Science</strong> programs,<br />

ARCTAS consisted of major field campaigns<br />

in the spring and summer of <strong>2008</strong>, involving<br />

the deployment of three <strong>NASA</strong> research<br />

aircraft to the Arctic to characterize<br />

atmospheric change in this climate-sensitive<br />

region. The <strong>NASA</strong> effort contributed to a<br />

larger interagency and international effort<br />

identified as POLARCAT (Polar Study<br />

using Aircraft, Remote Sensing, Surface<br />

Measurements and Models, of Climate,<br />

Chemistry, Aerosols, and Transport).<br />

ARCTAS science objectives addressed four<br />

major themes:<br />

1. Long-range transport of pollution to the<br />

Arctic including arctic haze, tropospheric<br />

ozone, and persistent pollutants, such as<br />

mercury.<br />

Continued, p. 11<br />

9

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