Cluster analysis of European surface ozone observations for  evaluation of MACC reanalysis data

Lyapina, Olga; Schultz, Martin G.; Hense, Andreas

doi:10.5194/acp-16-6863-2016

Articles | Volume 16, issue 11

https://doi.org/10.5194/acp-16-6863-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-16-6863-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 16, issue 11

Research article

|

06 Jun 2016

Research article |

| 06 Jun 2016

Cluster analysis of European surface ozone observations for evaluation of MACC reanalysis data

Olga Lyapina, Martin G. Schultz, and Andreas Hense

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Feb 2016	173	73	4	250
Mar 2016	37	12	1	50
Apr 2016	13	5	0	18
May 2016	7	7	0	14
Jun 2016	105	47	5	157
Jul 2016	17	13	2	32
Aug 2016	10	8	1	19
Sep 2016	12	6	0	18
Oct 2016	8	2	0	10
Nov 2016	7	7	0	14
Dec 2016	9	3	0	12
Jan 2017	17	6	1	24
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Mar 2017	21	12	1	34
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May 2018	14	7	3	24
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Dec 2023	44	5	3	52
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Feb 2024	34	9	0	43
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Jun 2024	47	9	2	58
Jul 2024	19	6	3	28
Aug 2024	23	6	3	32
Sep 2024	15	4	4	23
Oct 2024	18	9	0	27
Nov 2024	11	5	2	18
Dec 2024	7	2	0	9
Jan 2025	14	6	0	20
Feb 2025	23	8	4	35
Mar 2025	11	6	0	17
Apr 2025	16	14	3	33
May 2025	22	3	0	25
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Jul 2025	28	13	0	41
Aug 2025	44	9	0	53
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Oct 2025	18	20	0	38
Nov 2025	22	17	0	39

Cumulative views and downloads (calculated since 08 Feb 2016)

Month	HTML	PDF	XML	Total
Feb 2016	173	73	4	250
Mar 2016	37	12	1	50
Apr 2016	13	5	0	18
May 2016	7	7	0	14
Jun 2016	105	47	5	157
Jul 2016	17	13	2	32
Aug 2016	10	8	1	19
Sep 2016	12	6	0	18
Oct 2016	8	2	0	10
Nov 2016	7	7	0	14
Dec 2016	9	3	0	12
Jan 2017	17	6	1	24
Feb 2017	12	4	0	16
Mar 2017	21	12	1	34
Apr 2017	19	11	1	31
May 2017	22	13	1	36
Jun 2017	22	6	2	30
Jul 2017	18	9	0	27
Aug 2017	16	7	1	24
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Feb 2023	12	5	0	17
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May 2023	30	5	0	35
Jun 2023	39	1	2	42
Jul 2023	37	7	3	47
Aug 2023	35	7	1	43
Sep 2023	37	4	1	42
Oct 2023	42	3	1	46
Nov 2023	25	5	0	30
Dec 2023	44	5	3	52
Jan 2024	36	3	2	41
Feb 2024	34	9	0	43
Mar 2024	41	11	1	53
Apr 2024	34	14	5	53
May 2024	8	13	0	21
Jun 2024	47	9	2	58
Jul 2024	19	6	3	28
Aug 2024	23	6	3	32
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Oct 2024	18	9	0	27
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Dec 2024	7	2	0	9
Jan 2025	14	6	0	20
Feb 2025	23	8	4	35
Mar 2025	11	6	0	17
Apr 2025	16	14	3	33
May 2025	22	3	0	25
Jun 2025	43	11	5	59
Jul 2025	28	13	0	41
Aug 2025	44	9	0	53
Sep 2025	58	12	3	73
Oct 2025	18	20	0	38
Nov 2025	22	17	0	39

Latest update: 21 Nov 2025

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Short summary

This study applies numerical clustering for the classification of about 1500 ozone data sets in Europe. We show the usefulness of cluster analysis (CA) for the quantitative evaluation of a global model: pre-selection of stations and validation of a global model in a phase-space produce clearer and more interpretable results. CA can be easily updated for new stations, different length of data, and other type of input properties, as well as other type of data (for example, meteorological).