Using an absolute cavity pyrgeometer to validate the calibration of a transfer standard pyrgeometer outdoors, independent from the reference value of the atmospheric longwave irradiance / Ibrahim Reda, Afshin Andreas, Peter Gotseff.
Publication Info.
[Golden, Colo.] : National Renewable Energy Laboratory, 2021.
Connect to
Copies
Description
1 online resource (10 unnumbered pages) : color illustrations.
"Funding provided by NREL Metrology Laboratory"--Page 10.
Funding
DE-AC36-08GO28308
Note
Description based on online resource; title from PDF title page (NREL, viewed February 15, 2022).
Summary
A unique method of pyrgeometer calibration has been developed to improve the measurement uncertainty [1]. The results of this method yielded irradiance values within 3 W/m2 of those traceable to the World InfraRed Standard Group (WISG). The ACPs and pyrgeometer model PIR were deployed outdoors, and the irradiance measured by the PIR was compared against the irradiance measured by ACP95F3. Based on the results it is possible to achieve an uncertainty of 3.51 W/m2. These results suggest that the PIR calibration method might be useful in addressing the international need for a secondary standard pyrgeometer traceable to SI.
