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Title of the item:

Intercomparison of indoor and outdoor spectral irradiance measurements between INTI and INMETRO.

Title :
Intercomparison of indoor and outdoor spectral irradiance measurements between INTI and INMETRO.
Authors :
Ferreira da Silva T
Babaro JP
Zinzallari A
Jesiotr V
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Source :
Applied optics [Appl Opt] 2021 Jun 10; Vol. 60 (17), pp. 5177-5185.
Publication Type :
Journal Article
Language :
English
Imprint Name(s) :
Publication: <1999->: Washington, DC : Optical Society of America
Original Publication: Easton, Pa., Optical Society of America.
Entry Date(s) :
Date Created: 20210618 Latest Revision: 20210621
Update Code :
20211220
DOI :
10.1364/AO.424424
PMID :
34143082
Academic Journal
We report methodology and results for indoor and outdoor intercomparison of spectral irradiance measurements by Argentinian and Brazilian national metrology institutes traced to metrological standards following independent traceability chains. A group of standard lamps, measured between 250 and 1100 nm using characterized spectroradiometers and calibrated reference standards, resulted in a bilateral degree of equivalence (DoE) better than 0.5% in visible, 0.75% in infrared, and 3.7% in ultraviolet (UV), all within calibration uncertainties. Simultaneous measurement of UV solar spectral irradiance with both spectroradiometers traced to the same reference lamp resulted in DoE better than 5.4% and 5.9% (within uncertainties) for global and diffuse incidence in the UVA range. Total UV solar irradiance computed from integration over spectral measurements agrees within the criterion of normalized error smaller than one.

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