Short- and long-term variability of spectral solar UV irradiance at  Thessaloniki, Greece: effects of changes in aerosols, total ozone and clouds

Fountoulakis, Ilias; Bais, Alkiviadis F.; Fragkos, Konstantinos; Meleti, Charickleia; Tourpali, Kleareti; Zempila, Melina Maria

doi:10.5194/acp-16-2493-2016

Articles | Volume 16, issue 4

https://doi.org/10.5194/acp-16-2493-2016

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

https://doi.org/10.5194/acp-16-2493-2016

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

Articles | Volume 16, issue 4

Research article

|

01 Mar 2016

Research article |

| 01 Mar 2016

Short- and long-term variability of spectral solar UV irradiance at Thessaloniki, Greece: effects of changes in aerosols, total ozone and clouds

Ilias Fountoulakis, Alkiviadis F. Bais, Konstantinos Fragkos, Charickleia Meleti, Kleareti Tourpali, and Melina Maria Zempila

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Jan 2016	88	43	3	134
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Mar 2016	157	72	2	231
Apr 2016	29	13	0	42
May 2016	27	18	0	45
Jun 2016	14	7	1	22
Jul 2016	9	6	2	17
Aug 2016	15	9	2	26
Sep 2016	12	8	0	20
Oct 2016	15	9	0	24
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Jan 2017	19	5	1	25
Feb 2017	14	4	1	19
Mar 2017	25	12	2	39
Apr 2017	27	11	0	38
May 2017	28	13	0	41
Jun 2017	26	6	1	33
Jul 2017	25	6	0	31
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Sep 2017	8	11	0	19
Oct 2017	15	20	0	35
Nov 2017	24	12	0	36
Dec 2017	13	10	0	23
Jan 2018	9	9	0	18
Feb 2018	3	9	0	12
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Apr 2018	15	11	0	26
May 2018	12	14	0	26
Jun 2018	20	11	0	31
Jul 2018	9	8	1	18
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Nov 2018	11	13	0	24
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Mar 2019	32	13	0	45
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Jun 2019	31	8	1	40
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Jan 2023	20	21	2	43
Feb 2023	13	10	0	23
Mar 2023	17	10	0	27
Apr 2023	7	7	0	14
May 2023	38	13	1	52
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Nov 2023	30	9	0	39
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Jan 2024	42	17	0	59
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May 2024	26	16	5	47
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Aug 2024	25	7	1	33
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Oct 2024	24	23	0	47
Nov 2024	11	93	2	106
Dec 2024	14	29	0	43
Jan 2025	20	9	1	30
Feb 2025	40	18	5	63
Mar 2025	13	14	1	28
Apr 2025	15	14	0	29
May 2025	25	12	0	37
Jun 2025	45	17	12	74
Jul 2025	34	23	3	60
Aug 2025	52	16	1	69
Sep 2025	39	13	2	54
Oct 2025	18	26	0	44
Nov 2025	28	33	4	65
Dec 2025	1	0	1

Cumulative views and downloads (calculated since 18 Dec 2015)

Month	HTML	PDF	XML	Total
Dec 2015	64	51	5	120
Jan 2016	88	43	3	134
Feb 2016	47	10	1	58
Mar 2016	157	72	2	231
Apr 2016	29	13	0	42
May 2016	27	18	0	45
Jun 2016	14	7	1	22
Jul 2016	9	6	2	17
Aug 2016	15	9	2	26
Sep 2016	12	8	0	20
Oct 2016	15	9	0	24
Nov 2016	10	4	0	14
Dec 2016	5	2	0	7
Jan 2017	19	5	1	25
Feb 2017	14	4	1	19
Mar 2017	25	12	2	39
Apr 2017	27	11	0	38
May 2017	28	13	0	41
Jun 2017	26	6	1	33
Jul 2017	25	6	0	31
Aug 2017	14	8	1	23
Sep 2017	8	11	0	19
Oct 2017	15	20	0	35
Nov 2017	24	12	0	36
Dec 2017	13	10	0	23
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Feb 2019	34	4	0	38
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Apr 2019	34	6	1	41
May 2019	42	8	1	51
Jun 2019	31	8	1	40
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Aug 2019	35	4	0	39
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Jun 2022	14	11	2	27
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Sep 2022	35	6	0	41
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Jan 2023	20	21	2	43
Feb 2023	13	10	0	23
Mar 2023	17	10	0	27
Apr 2023	7	7	0	14
May 2023	38	13	1	52
Jun 2023	42	13	1	56
Jul 2023	47	6	3	56
Aug 2023	39	12	1	52
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Oct 2023	41	7	4	52
Nov 2023	30	9	0	39
Dec 2023	49	12	3	64
Jan 2024	42	17	0	59
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Mar 2024	42	26	2	70
Apr 2024	37	11	2	50
May 2024	26	16	5	47
Jun 2024	50	6	3	59
Jul 2024	17	15	1	33
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Oct 2024	24	23	0	47
Nov 2024	11	93	2	106
Dec 2024	14	29	0	43
Jan 2025	20	9	1	30
Feb 2025	40	18	5	63
Mar 2025	13	14	1	28
Apr 2025	15	14	0	29
May 2025	25	12	0	37
Jun 2025	45	17	12	74
Jul 2025	34	23	3	60
Aug 2025	52	16	1	69
Sep 2025	39	13	2	54
Oct 2025	18	26	0	44
Nov 2025	28	33	4	65
Dec 2025	1	0	1

Latest update: 03 Dec 2025

Short summary

Short- and long-term variability of spectral UV irradiance at Thessaloniki, Greece, is discussed in association with changes in total ozone column, aerosols and cloudiness. The UV data set from two Brewer spectrophotometers is used for the analysis. For the entire period 1994–2014, positive, statistically significant increases of UV irradiance were found, mainly attributable to changes in aerosols. UV irradiance is mainly increased from 1994 to 2006 and remains relatively stable thereafter.