Establishing the stability of multifilter UV rotating shadow-band radiometers

A modified Langley technique is used in a preliminary evaluation of the stability of ion‐assisted deposition interference filters. The technique uses lamp‐calibrated direct‐normal irradiance measurements to return estimates of the extraterrestrial solar irradiance over the passband of the filter. Re...

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Bibliographic Details
Published in:Journal of Geophysical Research 2000-02, Vol.105 (D4), p.4833-4840
Main Authors: Bigelow, David S., Slusser, James R.
Format: Article
Language:English
Subjects:
Earth, ocean, space
Exact sciences and technology
External geophysics
Geophysics. Techniques, methods, instrumentation and models
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Summary:A modified Langley technique is used in a preliminary evaluation of the stability of ion‐assisted deposition interference filters. The technique uses lamp‐calibrated direct‐normal irradiance measurements to return estimates of the extraterrestrial solar irradiance over the passband of the filter. Results from prototype and production UV‐multifilter rotating shadow‐band radiometers deployed in the U.S. Department of Agriculture UV Radiation Monitoring program indicate a 1%/yr drift in filter measurements. Measurements are reported to be within 8% of the SUSIM Atlas‐3 extraterrestrial solar irradiance.
ISSN:0148-0227
2156-2202
DOI:10.1029/1999JD900074