Long-term trends of surface ozone and its influencing factors at the Mt  Waliguan GAW station, China – Part 1: Overall trends and characteristics

Xu, Wanyun; Lin, Weili; Xu, Xiaobin; Tang, Jie; Huang, Jianqing; Wu, Hao; Zhang, Xiaochun

doi:10.5194/acp-16-6191-2016

Articles | Volume 16, issue 10

https://doi.org/10.5194/acp-16-6191-2016

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

Special issue:

Study of ozone, aerosols and radiation over the Tibetan Plateau...

https://doi.org/10.5194/acp-16-6191-2016

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

Articles | Volume 16, issue 10

Research article

|

20 May 2016

Research article |

| 20 May 2016

Long-term trends of surface ozone and its influencing factors at the Mt Waliguan GAW station, China – Part 1: Overall trends and characteristics

Wanyun Xu, Weili Lin, Xiaobin Xu, Jie Tang, Jianqing Huang, Hao Wu, and Xiaochun Zhang

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Views and downloads (calculated since 06 Nov 2015)

Month	HTML	PDF	XML	Total
Nov 2015	110	121	5	236
Dec 2015	11	60	4	75
Jan 2016	33	58	2	93
Feb 2016	22	38	1	61
Mar 2016	21	52	0	73
Apr 2016	13	36	0	49
May 2016	123	93	4	220
Jun 2016	27	44	0	71
Jul 2016	32	25	4	61
Aug 2016	15	13	0	28
Sep 2016	19	15	0	34
Oct 2016	14	4	0	18
Nov 2016	12	6	0	18
Dec 2016	11	15	1	27
Jan 2017	17	11	1	29
Feb 2017	21	12	2	35
Mar 2017	41	28	1	70
Apr 2017	24	8	1	33
May 2017	41	24	1	66
Jun 2017	33	20	3	56
Jul 2017	28	15	0	43
Aug 2017	17	15	1	33
Sep 2017	19	14	1	34
Oct 2017	12	16	0	28
Nov 2017	24	18	1	43
Dec 2017	23	17	1	41
Jan 2018	24	29	1	54
Feb 2018	13	15	0	28
Mar 2018	23	28	1	52
Apr 2018	21	17	1	39
May 2018	22	14	1	37
Jun 2018	10	11	0	21
Jul 2018	20	15	0	35
Aug 2018	19	12	0	31
Sep 2018	12	14	0	26
Oct 2018	17	13	2	32
Nov 2018	23	18	0	41
Dec 2018	20	11	2	33
Jan 2019	7	14	1	22
Feb 2019	4	8	0	12
Mar 2019	14	8	0	22
Apr 2019	17	12	0	29
May 2019	12	16	2	30
Jun 2019	7	5	1	13
Jul 2019	16	13	1	30
Aug 2019	4	10	1	15
Sep 2019	8	8	0	16
Oct 2019	6	12	1	19
Nov 2019	11	12	0	23
Dec 2019	11	6	1	18
Jan 2020	10	7	1	18
Feb 2020	11	11	1	23
Mar 2020	20	12	1	33
Apr 2020	14	16	0	30
May 2020	8	12	0	20
Jun 2020	22	7	0	29
Jul 2020	21	16	7	44
Aug 2020	15	13	2	30
Sep 2020	13	4	2	19
Oct 2020	6	7	0	13
Nov 2020	14	10	1	25
Dec 2020	11	13	0	24
Jan 2021	19	13	2	34
Feb 2021	11	7	0	18
Mar 2021	19	5	0	24
Apr 2021	24	15	1	40
May 2021	76	19	4	99
Jun 2021	80	17	2	99
Jul 2021	28	12	1	41
Aug 2021	15	11	1	27
Sep 2021	15	20	0	35
Oct 2021	30	39	1	70
Nov 2021	25	32	2	59
Dec 2021	22	13	1	36
Jan 2022	19	14	1	34
Feb 2022	31	16	1	48
Mar 2022	26	18	2	46
Apr 2022	24	14	1	39
May 2022	16	12	1	29
Jun 2022	17	12	0	29
Jul 2022	5	8	0	13
Aug 2022	18	8	3	29
Sep 2022	22	16	0	38
Oct 2022	20	5	1	26
Nov 2022	42	15	0	57
Dec 2022	27	11	0	38
Jan 2023	28	21	2	51
Feb 2023	28	11	0	39
Mar 2023	53	24	1	78
Apr 2023	21	17	0	38
May 2023	51	13	0	64
Jun 2023	53	5	0	58
Jul 2023	50	22	1	73
Aug 2023	48	19	3	70
Sep 2023	51	12	0	63
Oct 2023	49	11	3	63
Nov 2023	36	4	1	41
Dec 2023	57	22	2	81
Jan 2024	51	14	2	67
Feb 2024	57	18	2	77
Mar 2024	62	23	3	88
Apr 2024	65	12	6	83
May 2024	46	28	8	82
Jun 2024	17	12	1	30
Jul 2024	23	12	2	37
Aug 2024	49	23	1	73
Sep 2024	29	24	0	53
Oct 2024	32	18	2	52
Nov 2024	20	8	2	30
Dec 2024	28	8	2	38
Jan 2025	24	9	0	33
Feb 2025	42	13	3	58
Mar 2025	30	9	3	42
Apr 2025	29	23	1	53
May 2025	39	9	1	49
Jun 2025	60	15	2	77
Jul 2025	42	21	2	65
Aug 2025	50	21	1	72
Sep 2025	53	16	2	71
Oct 2025	34	32	0	66
Nov 2025	35	30	2	67

Cumulative views and downloads (calculated since 06 Nov 2015)

Month	HTML	PDF	XML	Total
Nov 2015	110	121	5	236
Dec 2015	11	60	4	75
Jan 2016	33	58	2	93
Feb 2016	22	38	1	61
Mar 2016	21	52	0	73
Apr 2016	13	36	0	49
May 2016	123	93	4	220
Jun 2016	27	44	0	71
Jul 2016	32	25	4	61
Aug 2016	15	13	0	28
Sep 2016	19	15	0	34
Oct 2016	14	4	0	18
Nov 2016	12	6	0	18
Dec 2016	11	15	1	27
Jan 2017	17	11	1	29
Feb 2017	21	12	2	35
Mar 2017	41	28	1	70
Apr 2017	24	8	1	33
May 2017	41	24	1	66
Jun 2017	33	20	3	56
Jul 2017	28	15	0	43
Aug 2017	17	15	1	33
Sep 2017	19	14	1	34
Oct 2017	12	16	0	28
Nov 2017	24	18	1	43
Dec 2017	23	17	1	41
Jan 2018	24	29	1	54
Feb 2018	13	15	0	28
Mar 2018	23	28	1	52
Apr 2018	21	17	1	39
May 2018	22	14	1	37
Jun 2018	10	11	0	21
Jul 2018	20	15	0	35
Aug 2018	19	12	0	31
Sep 2018	12	14	0	26
Oct 2018	17	13	2	32
Nov 2018	23	18	0	41
Dec 2018	20	11	2	33
Jan 2019	7	14	1	22
Feb 2019	4	8	0	12
Mar 2019	14	8	0	22
Apr 2019	17	12	0	29
May 2019	12	16	2	30
Jun 2019	7	5	1	13
Jul 2019	16	13	1	30
Aug 2019	4	10	1	15
Sep 2019	8	8	0	16
Oct 2019	6	12	1	19
Nov 2019	11	12	0	23
Dec 2019	11	6	1	18
Jan 2020	10	7	1	18
Feb 2020	11	11	1	23
Mar 2020	20	12	1	33
Apr 2020	14	16	0	30
May 2020	8	12	0	20
Jun 2020	22	7	0	29
Jul 2020	21	16	7	44
Aug 2020	15	13	2	30
Sep 2020	13	4	2	19
Oct 2020	6	7	0	13
Nov 2020	14	10	1	25
Dec 2020	11	13	0	24
Jan 2021	19	13	2	34
Feb 2021	11	7	0	18
Mar 2021	19	5	0	24
Apr 2021	24	15	1	40
May 2021	76	19	4	99
Jun 2021	80	17	2	99
Jul 2021	28	12	1	41
Aug 2021	15	11	1	27
Sep 2021	15	20	0	35
Oct 2021	30	39	1	70
Nov 2021	25	32	2	59
Dec 2021	22	13	1	36
Jan 2022	19	14	1	34
Feb 2022	31	16	1	48
Mar 2022	26	18	2	46
Apr 2022	24	14	1	39
May 2022	16	12	1	29
Jun 2022	17	12	0	29
Jul 2022	5	8	0	13
Aug 2022	18	8	3	29
Sep 2022	22	16	0	38
Oct 2022	20	5	1	26
Nov 2022	42	15	0	57
Dec 2022	27	11	0	38
Jan 2023	28	21	2	51
Feb 2023	28	11	0	39
Mar 2023	53	24	1	78
Apr 2023	21	17	0	38
May 2023	51	13	0	64
Jun 2023	53	5	0	58
Jul 2023	50	22	1	73
Aug 2023	48	19	3	70
Sep 2023	51	12	0	63
Oct 2023	49	11	3	63
Nov 2023	36	4	1	41
Dec 2023	57	22	2	81
Jan 2024	51	14	2	67
Feb 2024	57	18	2	77
Mar 2024	62	23	3	88
Apr 2024	65	12	6	83
May 2024	46	28	8	82
Jun 2024	17	12	1	30
Jul 2024	23	12	2	37
Aug 2024	49	23	1	73
Sep 2024	29	24	0	53
Oct 2024	32	18	2	52
Nov 2024	20	8	2	30
Dec 2024	28	8	2	38
Jan 2025	24	9	0	33
Feb 2025	42	13	3	58
Mar 2025	30	9	3	42
Apr 2025	29	23	1	53
May 2025	39	9	1	49
Jun 2025	60	15	2	77
Jul 2025	42	21	2	65
Aug 2025	50	21	1	72
Sep 2025	53	16	2	71
Oct 2025	34	32	0	66
Nov 2025	35	30	2	67

Latest update: 21 Nov 2025

Short summary

Long-term characteristics and trends of baseline surface ozone concentration at Waliguan station in western China for the period of 1994 to 2013 were analysed, using a modified Mann–Kendall test and the Hilbert–Huang transform analysis for the trend and periodicity analysis, respectively. Significant increasing trends were detected in all seasons, except for summer. The non-linearity caused by the interannual variation of ozone concentrations is evident, showing a 2–4-year, 7- and 11-year periodicity.