Absorption coefficients of ozone for the backscatter UV experiment

Kenneth F. Klenk

doi:10.1364/AO.19.000236

Applied Optics
Vol. 19,
Issue 2,
pp. 236-242
(1980)
•https://doi.org/10.1364/AO.19.000236

Absorption coefficients of ozone for the backscatter UV experiment

Kenneth F. Klenk

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Kenneth F. Klenk, "Absorption coefficients of ozone for the backscatter UV experiment," Appl. Opt. 19, 236-242 (1980)

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Abstract

Band-averaged absorption coefficients for the wavelength channels of the backscatter ultraviolet (BUV) experiment are computed using the laboratory ozone absorption measurements of several experimenters. For the major ozone-determining channels on the BUV (3125 and 3175 Å) the various coefficients ranged from ±11 to ±4%, respectively, about the range midpoint. These percentage uncertainties in the band absorption coefficients lead to similar percentage uncertainties in the absolute value of derived total ozone because of the reciprocal relationship between the two. Derived total-ozone ratios of the BUV A:B pairs, the Dobson AD:CD double pairs, and the BUV B:Dobson AD are estimated for the different sets of coefficients based on the ratios experimentally observed in the BUV and Dobson data. The Inn and Tanaka measurements lead to the most consistent results. Band-averaged coefficients for the BUV-profiling wavelengths are also computed.

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λ	−78 to −44°C	18 to −44°C	λ	−78 to −44°C	18 to −44°C
3051	1.02	0.91	3226	0.99	0.89
3053	1.01	0.92	3239	1.16	0.65
3059	1.02	0.91	3242	1.01	0.74
3061	1.02	0.93	3245	1.02	0.74
3075	1.03	0.91	3248	0.99	0.91
3077	1.01	0.91	3253	1.02	0.81
3083	1.01	0.91	3255	1.01	0.83
3085	1.01	0.91	3269	1.13	0.62
3098	1.03	0.90	3272	1.01	0.80
3100	1.02	0.91	3275	1.03	0.76
3109	1.03	0.90	3279	0.97	0.91
3112	1.03	0.91	3292	1.19	0.57
3130	1.03	0.83	3295	1.09	0.61
3135	1.02	0.87	3299	1.07	0.61
3167	1.03	0.79	3303	0.99	0.85
3170	1.02	0.84	3309	1.01	0.77
3173	1.02	0.83	3312	0.98	0.86
3176	1.00	0.87	3328	1.20	0.65
3190	1.07	0.76	3332	1.07	0.64
3194	0.99	0.86	3334	1.10	0.67
			3338	0.95	0.86
			3365	0.98	0.80
			3369	1.16	0.78
			3372	0.97	0.88
			3401	1.00	0.86

Wavelength (Å) or pair		Absorption coefficients for −44°C (atm-cm)⁻¹ base 10

Nominal	BUV	VIG(53)	SPWB	VIG(67)	IT
3125	3126.0	0.710	0.832	0.664	0.746
3175	3176.3	0.392	0.411	0.378	0.395
3312	3312.9	0.074	0.076	0.070	0.072
3398	3399.3	0.018	0.014	0.017	0.018
	A	0.636	0.756	0.594	0.674
	B	0.374	0.397	0.361	0.377

Wavelength (Å) or pair	Absorption coefficient for −44°C (atm-cm)⁻¹ base 10

	VIG(53)^a	SPWB	VIG(67)^b	IT	IOC(68)^c
3055	1.882	2.139	1.863	1.999
3088	1.287	1.400	1.276	1.330
3114.5	0.912	1.014	0.850	0.922
3176	0.391	0.422	0.377	0.400
3254	0.120	0.123	0.117	0.123
3291	0.064	0.087	0.070	0.075
3324	0.047	0.050	0.043	0.050
3398	0.017	0.021	0.012	0.017
A	1.762	2.016	1.746	1.876	1.748
B	1.223	1.313	1.206	1.255	1.140
C	0.865	0.964	0.807	0.872	0.800
D	0.374	0.401	0.365	0.383	0.360
AD	1.388	1.615	1.381	1.493	1.388
CD	0.491	0.563	0.442	0.489	0.440

	VIG(53)	SPWB	VIG(67)	IT	IOC(68)
Dobson CD:AD	0.92^a	0.94.	1.015	0.995	1.025
BUV B:A	0.965^b	1.12	0.94	1.015	—
BUV B:Dobson AD	0.97^b	1.09	1.00	1.035	—

Wavelength (Å)

Nominal	BUV	Handbook	SPWB	IT	VIG
2555	2556.5	129.3	133.0	128.9	119.9
2735	2737.0	70.6	73.4	69.7	70.4
2830	2831.0	33.5	35.3	33.0	34.1
2876	2877.0	20.3	21.0	19.5	20.8
2922	2922.8	11.78	12.13	11.33	10.99
2975	2976.4	5.81	6.16	5.62	5.61
3019	3020.5	3.04	3.47	3.10	3.04
3058	3059.1	1.84	2.05	1.91	1.84

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Applied Optics