Laboratory calibration of pyrgeometers with known spectral responsivities
Applied Optics, Vol. 46, Issue 30, pp. 7419-7425 (2007)
http://dx.doi.org/10.1364/AO.46.007419
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Abstract
A methodology is presented to calibrate pyrgeometers measuring atmospheric long-wave radiation, if their spectral dome transmission is known. The new calibrationprocedure is based on a black-body cavity to retrieve the sensitivity of the pyrgeometer, combined with calculated atmospheric long-wave spectra to determine a correction function in dependence of the integrated atmospheric water vapor to convert Planck radiation spectra to atmospheric long-wave spectra.
The methodology was validated with two custom CG4 pyrgeometers with known dome transmissions by a comparison to the World Infrared Standard Group of Pyrgeometers at the World Radiation Center–Infrared Radiometry Section. The responsivities retrieved using the new laboratory calibration agree to within
© 2007 Optical Society of America
OCIS Codes
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(010.3920) Atmospheric and oceanic optics : Meteorology
(040.3060) Detectors : Infrared
(120.5630) Instrumentation, measurement, and metrology : Radiometry
ToC Category:
Atmospheric and Oceanic Optics
History
Original Manuscript: July 11, 2007
Revised Manuscript: August 29, 2007
Manuscript Accepted: September 3, 2007
Published: October 10, 2007
Citation
Julian Gröbner and Alexander Los, "Laboratory calibration of pyrgeometers with known spectral responsivities," Appl. Opt. 46, 7419-7425 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-30-7419
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