Comparison of OMI UV observations with ground-based measurements at high northern latitudes

Bernhard, G.; Arola, A.; Dahlback, A.; Fioletov, V.; Heikkilä, A.; Johnsen, B.; Koskela, T.; Lakkala, K.; Svendby, T.; Tamminen, J.

doi:10.5194/acp-15-7391-2015

Articles | Volume 15, issue 13

https://doi.org/10.5194/acp-15-7391-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Ten years of Ozone Monitoring Instrument (OMI) observations...

https://doi.org/10.5194/acp-15-7391-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 13

Research article

|

09 Jul 2015

Research article |

| 09 Jul 2015

Comparison of OMI UV observations with ground-based measurements at high northern latitudes

G. Bernhard, A. Arola, A. Dahlback, V. Fioletov, A. Heikkilä, B. Johnsen, T. Koskela, K. Lakkala, T. Svendby, and J. Tamminen

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Month	HTML	PDF	XML	Total
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Jun 2015	7	10	4	21
Jul 2015	85	52	5	142
Aug 2015	37	31	3	71
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Oct 2015	41	8	3	52
Nov 2015	45	36	7	88
Dec 2015	12	19	3	34
Jan 2016	38	17	4	59
Feb 2016	38	11	2	51
Mar 2016	27	7	1	35
Apr 2016	13	11	0	24
May 2016	15	7	0	22
Jun 2016	10	7	2	19
Jul 2016	14	5	4	23
Aug 2016	12	11	1	24
Sep 2016	16	8	0	24
Oct 2016	16	9	0	25
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Jan 2024	50	27	1	78
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Jan 2025	28	22	0	50
Feb 2025	52	20	3	75
Mar 2025	20	19	2	41
Apr 2025	26	17	0	43
May 2025	20	11	2	33
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Month	HTML	PDF	XML	Total
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Apr 2015	44	29	2	75
May 2015	9	14	5	28
Jun 2015	7	10	4	21
Jul 2015	85	52	5	142
Aug 2015	37	31	3	71
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Oct 2015	41	8	3	52
Nov 2015	45	36	7	88
Dec 2015	12	19	3	34
Jan 2016	38	17	4	59
Feb 2016	38	11	2	51
Mar 2016	27	7	1	35
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May 2016	15	7	0	22
Jun 2016	10	7	2	19
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Apr 2025	26	17	0	43
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Jul 2025	30	28	3	61
Aug 2025	41	20	2	63
Sep 2025	91	22	2	115
Oct 2025	20	22	0	42
Nov 2025	35	31	3	69

Latest update: 28 Nov 2025

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Short summary

Surface erythemal UV data from the Ozone Monitoring Instrument (OMI) are validated for high northern latitudes (Arctic and Scandinavia) using ground-based measurements. The bias in OMI data caused by incorrect assumptions of the surface albedo are quantified and the mechanism that causes this bias is discussed. Methods to improve the accuracy of OMI data products are presented.