Qualityb assurance of reference standards from nine European solar-ultraviolet
monitoring laboratories

Julian Gröbner; Diana Rembges; Alkiviadis F. Bais; Mario Blumthaler; Thierry Cabot; Weine Josefsson; Tapani Koskela; Trond M. Thorseth; Ann R. Webb; Ulf Wester

doi:10.1364/AO.41.004278

Applied Optics
Vol. 41,
Issue 21,
pp. 4278-4282
(2002)
•https://doi.org/10.1364/AO.41.004278

Qualityb assurance of reference standards from nine European solar-ultraviolet monitoring laboratories

Julian Gröbner, Diana Rembges, Alkiviadis F. Bais, Mario Blumthaler, Thierry Cabot, Weine Josefsson, Tapani Koskela, Trond M. Thorseth, Ann R. Webb, and Ulf Wester

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Julian Gröbner, Diana Rembges, Alkiviadis F. Bais, Mario Blumthaler, Thierry Cabot, Weine Josefsson, Tapani Koskela, Trond M. Thorseth, Ann R. Webb, and Ulf Wester, "Qualityb assurance of reference standards from nine European solar-ultraviolet monitoring laboratories," Appl. Opt. 41, 4278-4282 (2002)

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Abstract

A program for quality assurance of reference standards has been initiated among nine solar-UV monitoring laboratories. By means of a traveling lamp package that comprises several 1000-W ANSI code DXW-type quartz-halogen lamps, a 0.1-Ω shunt, and a 6-1/2 digit voltmeter, the irradiance scales used by the nine laboratories were compared with one another; a relative uncertainty of 1.2% was found. The comparison of 15 reference standards yielded differences of as much as 9%; the average difference was less than 3%.

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Lamp	Type of Lamp	Originating Laboratory	Primary Reference	Experimental Relative Uncertaintyb	Spectroradiometer	Institute
S-974	DXW	OL	NIST	3	Brewer#066	JRC
O-007	DXW	OSRAM	PTB	4	Brewer#163	JRC
BN-9101-2/269	FEL	GH	PTB	4	DM-150	JRC
BN-9101-2/167	FEL	GH	PTB	4	DTM300	UIIMP
S-952	DXW	OL	NIST	3	Brewer#107	FMI
D05_STUK	DXW	STUK	NIST	3		FMI
D05_HUT	DXW	HUT	HUT	2		FMI
D13	DXW	GH	PTB	4		FMI
01F980030	DXW	SP	NIST	8	Optronic 742	SSI
#3	DXW	SP	NIST	8	Brewer#128	SMHI
O-538	FEL	OL	NIST	3	DM-150	IRSA
S-1013	DXW	OL	NIST	3	Brewer#86	LAP
EN-86	FEL	EPLAB	NIST	4	DM-150	NTNU
F502	FEL	OL	NIST	3	DTM300	UMIST
BBH2	FEL	NPL	NPL	3		UMIST

Date	Percent Difference from 08/11/2000 Data
Date	Lamp S-1007	Lamp S-1008
08/11/2000	+0.0	+0.0
27/11/2000	-0.9	-1.2
09/01/2001	+0.1	-1.0
21/02/2001	+1.6	+0.9
13/04/2001	+0.7	+0.3
17/07/2001	-0.3	-0.8
27/09/2001	+0.2	-1.5
16/11/2001	-0.5	-1.0
Variability	±1.2	±1.2

Lamp	Percent Difference from the Mean
Lamp	At 300 nm	At 330 nm	At 360 nm
S-974	3.8	3.4	3.2
S-1013	2.0	1.7	1.6
S-952	4.5	3.0	1.8
O-538	0.0	1.7	2.4
F502	-2.5	-2.0	-1.5
#3	0.9	-0.6	-0.2
01F98030	-1.2	-1.4	-1.6
D05_STUK	1.8	0.7	0.2
EN-86	-2.8	-3.8	-2.8
BN-9101-2/167	-1.4	-1.4	-0.4
BN-9101-2/269	1.1	2.0	1.5
D13	-1.4	-1.0	-1.5
O-007	-4.9	-4.0	-3.9
D05_HUT	0.8	-0.6	-1.1
BBH2	-0.7	2.2	2.3

Lamp	Type of Lamp	Originating Laboratory	Primary Reference	Experimental Relative Uncertaintyb	Spectroradiometer	Institute
S-974	DXW	OL	NIST	3	Brewer#066	JRC
O-007	DXW	OSRAM	PTB	4	Brewer#163	JRC
BN-9101-2/269	FEL	GH	PTB	4	DM-150	JRC
BN-9101-2/167	FEL	GH	PTB	4	DTM300	UIIMP
S-952	DXW	OL	NIST	3	Brewer#107	FMI
D05_STUK	DXW	STUK	NIST	3		FMI
D05_HUT	DXW	HUT	HUT	2		FMI
D13	DXW	GH	PTB	4		FMI
01F980030	DXW	SP	NIST	8	Optronic 742	SSI
#3	DXW	SP	NIST	8	Brewer#128	SMHI
O-538	FEL	OL	NIST	3	DM-150	IRSA
S-1013	DXW	OL	NIST	3	Brewer#86	LAP
EN-86	FEL	EPLAB	NIST	4	DM-150	NTNU
F502	FEL	OL	NIST	3	DTM300	UMIST
BBH2	FEL	NPL	NPL	3		UMIST

Date	Percent Difference from 08/11/2000 Data
Date	Lamp S-1007	Lamp S-1008
08/11/2000	+0.0	+0.0
27/11/2000	-0.9	-1.2
09/01/2001	+0.1	-1.0
21/02/2001	+1.6	+0.9
13/04/2001	+0.7	+0.3
17/07/2001	-0.3	-0.8
27/09/2001	+0.2	-1.5
16/11/2001	-0.5	-1.0
Variability	±1.2	±1.2

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Applied Optics