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Measurements of aerosol properties began
at CMDL in the mid-
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1970s with
stations at Point Barrow (Alaska), Mauna Loa
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(Hawaii),
American Samoa, and the South Pole.
Since 1992,
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CMDL has been
expanding its aerosol measurement program to
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include
monitoring stations designed to obtain representative
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regional
measurements of aerosol properties in areas directly
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impacted by human
activities. These regional
monitoring
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stations use
similar sampling methodology which includes
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relative humidity
control (< 40%) and the use of two aerosol size
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cuts: less than 1 mm diameter and less than
10 mm
diameter.
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