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Comparison of aerosol optical depth from four solar radiometers during the fall 1997 ARM intensive observation period
Author(s) -
Schmid B.,
Michalsky J.,
Halthore R.,
Beauharnois M.,
Harrison L.,
Livingston J.,
Russell P.,
Holben B.,
Eck T.,
Smirnov A.
Publication year - 1999
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1999gl900513
Subject(s) - radiometer , aerosol , environmental science , remote sensing , tracking (education) , optical depth , atmospheric sciences , meteorology , geology , physics , psychology , pedagogy
In the Fall of 1997 the Atmospheric Radiation Measurement (ARM) program conducted an Intensive Observation Period (IOP) to study aerosols. Five sun‐tracking radiometers were present to measure the total column aerosol optical depth. This comparison performed on the Southern Great Plains (SGP) demonstrates the capabilities and limitations of modern tracking sunphotometers at a location typical of where aerosol measurements are required. The key result was agreement in aerosol optical depth measured by 4 of the 5 instruments within 0.015 (rms). The key to this level of agreement was meticulous care in the calibrations of the instruments.