NASA - National Aeronautics and Space Administration
NASA Tropospheric Chemistry Integrated Data Ceneter

Arctic Research of the Composition of the Troposphere from
Aircraft and Satellites (ARCTAS)

Archive Status Data Archive: ARCTAS Archive Status

Data Access Data Access & Other Data Sources

Satellite Tracks Satellite Overpass Tracks

ARCTAS Flight Plans/Reports Flight Plans/Reports: DC8 P3B/B200

ARCTAS Measurement Comparisons Results Measurement Comparisons Results

Flight Tracks Flight Tracks: P-3B / DC-8

Flight Times Flight Times (Take Offs/Landings)

ICARTT Data Format ICARTT Data Format Document

ARCTAS Data Protocol ARCTAS Data Policy and Management Plan

ARCTAS Intercomparison Strategy ARCTAS Measurement Comparison Protocol

Related Websites Related Links & Websites

P-3B Video Clips NASA P-3B Video Clips

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    For ARCTAS mission details, visit:

    For POLARCAT related campaigns, visit:

    The Arctic is a beacon of global change. It is where warming has been strongest over the past century, accelerating over the past decades. It is an atmospheric receptor of pollution from the northern mid-latitudes continents, as manifested in particular by thick aerosol layers ("arctic haze") and by accumulation of persistent pollutants such as mercury.

    It is increasingly beset by emissions from massive forest fires in boreal Eurasia and North America. Perturbations to the arctic environment trigger unique regional responses including melting of ice sheets and permafrost, decrease in snow albedo due to deposition of black carbon,and halogen radical chemistry from sea salt aerosols deposited to the ice.

    These responses make the Arctic a particularly vulnerable place, subject to dramatic amplification of environmental change with possibly global consequences. The urgent need for research to better understand changes in arctic atmospheric composition and climate is discussed by the Arctic Climate Impact Assessment ( ) and the U. S. Global Change Research Program ( Major research activities to address this need will take place in 2007-2008 under the auspices of the Third International Polar Year (IPY; ).

    NASA ARCTAS White paper (2.6MB)PDF file

    NASA - National Aeronautics and Space
    Curator: Ali Aknan
    NASA Official: Dr. Gao Chen

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