Tropospheric ozone variability in the tropics from ENSO to MJO and shorter timescales

Ziemke, J. R.; Douglass, A. R.; Oman, L. D.; Strahan, S. E.; Duncan, B. N.

doi:10.5194/acp-15-8037-2015

Articles | Volume 15, issue 14

https://doi.org/10.5194/acp-15-8037-2015

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

https://doi.org/10.5194/acp-15-8037-2015

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

Articles | Volume 15, issue 14

Research article

|

22 Jul 2015

Research article |

| 22 Jul 2015

Tropospheric ozone variability in the tropics from ENSO to MJO and shorter timescales

J. R. Ziemke, A. R. Douglass, L. D. Oman, S. E. Strahan, and B. N. Duncan

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Views and downloads (calculated since 05 Mar 2015)

Month	HTML	PDF	XML	Total
Mar 2015	73	65	3	141
Apr 2015	29	52	2	83
May 2015	18	53	4	75
Jun 2015	17	27	5	49
Jul 2015	128	85	9	222
Aug 2015	29	38	1	68
Sep 2015	20	24	0	44
Oct 2015	32	12	0	44
Nov 2015	31	24	4	59
Dec 2015	17	21	1	39
Jan 2016	37	22	4	63
Feb 2016	32	23	1	56
Mar 2016	19	46	0	65
Apr 2016	10	26	2	38
May 2016	14	16	0	30
Jun 2016	6	3	1	10
Jul 2016	14	7	3	24
Aug 2016	9	4	0	13
Sep 2016	14	7	1	22
Oct 2016	10	4	0	14
Nov 2016	12	19	0	31
Dec 2016	4	16	0	20
Jan 2017	19	19	1	39
Feb 2017	10	3	0	13
Mar 2017	15	10	1	26
Apr 2017	21	13	0	34
May 2017	28	13	0	41
Jun 2017	23	4	3	30
Jul 2017	23	6	0	29
Aug 2017	14	15	1	30
Sep 2017	9	13	0	22
Oct 2017	9	12	0	21
Nov 2017	9	16	0	25
Dec 2017	9	18	1	28
Jan 2018	11	13	2	26
Feb 2018	6	16	0	22
Mar 2018	10	17	0	27
Apr 2018	10	9	2	21
May 2018	10	17	1	28
Jun 2018	5	11	0	16
Jul 2018	4	16	1	21
Aug 2018	13	7	1	21
Sep 2018	11	15	0	26
Oct 2018	13	12	2	27
Nov 2018	8	11	0	19
Dec 2018	7	6	1	14
Jan 2019	3	5	1	9
Feb 2019	7	2	0	9
Mar 2019	3	4	0	7
Apr 2019	9	13	0	22
May 2019	4	11	0	15
Jun 2019	7	8	0	15
Jul 2019	4	11	0	15
Aug 2019	8	10	1	19
Sep 2019	1	8	0	9
Oct 2019	6	3	0	9
Nov 2019	4	8	0	12
Dec 2019	8	3	0	11
Jan 2020	5	4	0	9
Feb 2020	8	3	1	12
Mar 2020	2	2	0	4
Apr 2020	4	6	0	10
May 2020	5	7	0	12
Jun 2020	18	4	0	22
Jul 2020	17	9	5	31
Aug 2020	14	7	2	23
Sep 2020	10	5	0	15
Oct 2020	9	3	1	13
Nov 2020	10	8	1	19
Dec 2020	13	6	0	19
Jan 2021	25	6	0	31
Feb 2021	8	5	0	13
Mar 2021	6	3	0	9
Apr 2021	10	11	0	21
May 2021	15	8	1	24
Jun 2021	12	7	0	19
Jul 2021	10	11	0	21
Aug 2021	10	7	0	17
Sep 2021	11	8	0	19
Oct 2021	6	27	1	34
Nov 2021	7	16	0	23
Dec 2021	9	9	0	18
Jan 2022	13	10	0	23
Feb 2022	11	5	2	18
Mar 2022	10	7	0	17
Apr 2022	7	3	2	12
May 2022	9	5	0	14
Jun 2022	6	8	1	15
Jul 2022	6	5	0	11
Aug 2022	13	7	0	20
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Oct 2022	9	7	1	17
Nov 2022	8	11	0	19
Dec 2022	11	8	0	19
Jan 2023	5	11	0	16
Feb 2023	9	5	0	14
Mar 2023	13	3	0	16
Apr 2023	12	8	1	21
May 2023	36	13	1	50
Jun 2023	38	10	1	49
Jul 2023	41	8	1	50
Aug 2023	36	8	1	45
Sep 2023	40	10	3	53
Oct 2023	45	5	1	51
Nov 2023	31	4	1	36
Dec 2023	44	4	1	49
Jan 2024	45	4	1	50
Feb 2024	38	10	0	48
Mar 2024	46	17	3	66
Apr 2024	44	6	1	51
May 2024	16	11	2	29
Jun 2024	8	6	1	15
Jul 2024	15	10	1	26
Aug 2024	19	6	2	27
Sep 2024	6	1	0	7
Oct 2024	24	6	1	31
Nov 2024	12	7	2	21
Dec 2024	14	4	3	21
Jan 2025	23	20	6	49
Feb 2025	29	6	3	38
Mar 2025	24	11	0	35
Apr 2025	18	10	0	28
May 2025	28	12	1	41
Jun 2025	47	23	2	72
Jul 2025	23	10	2	35
Aug 2025	37	14	2	53
Sep 2025	58	13	1	72
Oct 2025	21	25	0	46
Nov 2025	23	20	5	48
Dec 2025	29	26	2	57
Jan 2026	56	23	8	87
Feb 2026	44	11	3	58
Mar 2026	28	8	2	38

Cumulative views and downloads (calculated since 05 Mar 2015)

Month	HTML	PDF	XML	Total
Mar 2015	73	65	3	141
Apr 2015	29	52	2	83
May 2015	18	53	4	75
Jun 2015	17	27	5	49
Jul 2015	128	85	9	222
Aug 2015	29	38	1	68
Sep 2015	20	24	0	44
Oct 2015	32	12	0	44
Nov 2015	31	24	4	59
Dec 2015	17	21	1	39
Jan 2016	37	22	4	63
Feb 2016	32	23	1	56
Mar 2016	19	46	0	65
Apr 2016	10	26	2	38
May 2016	14	16	0	30
Jun 2016	6	3	1	10
Jul 2016	14	7	3	24
Aug 2016	9	4	0	13
Sep 2016	14	7	1	22
Oct 2016	10	4	0	14
Nov 2016	12	19	0	31
Dec 2016	4	16	0	20
Jan 2017	19	19	1	39
Feb 2017	10	3	0	13
Mar 2017	15	10	1	26
Apr 2017	21	13	0	34
May 2017	28	13	0	41
Jun 2017	23	4	3	30
Jul 2017	23	6	0	29
Aug 2017	14	15	1	30
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Oct 2017	9	12	0	21
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Feb 2018	6	16	0	22
Mar 2018	10	17	0	27
Apr 2018	10	9	2	21
May 2018	10	17	1	28
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Oct 2018	13	12	2	27
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Apr 2019	9	13	0	22
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Aug 2021	10	7	0	17
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Oct 2021	6	27	1	34
Nov 2021	7	16	0	23
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Jan 2022	13	10	0	23
Feb 2022	11	5	2	18
Mar 2022	10	7	0	17
Apr 2022	7	3	2	12
May 2022	9	5	0	14
Jun 2022	6	8	1	15
Jul 2022	6	5	0	11
Aug 2022	13	7	0	20
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Oct 2022	9	7	1	17
Nov 2022	8	11	0	19
Dec 2022	11	8	0	19
Jan 2023	5	11	0	16
Feb 2023	9	5	0	14
Mar 2023	13	3	0	16
Apr 2023	12	8	1	21
May 2023	36	13	1	50
Jun 2023	38	10	1	49
Jul 2023	41	8	1	50
Aug 2023	36	8	1	45
Sep 2023	40	10	3	53
Oct 2023	45	5	1	51
Nov 2023	31	4	1	36
Dec 2023	44	4	1	49
Jan 2024	45	4	1	50
Feb 2024	38	10	0	48
Mar 2024	46	17	3	66
Apr 2024	44	6	1	51
May 2024	16	11	2	29
Jun 2024	8	6	1	15
Jul 2024	15	10	1	26
Aug 2024	19	6	2	27
Sep 2024	6	1	0	7
Oct 2024	24	6	1	31
Nov 2024	12	7	2	21
Dec 2024	14	4	3	21
Jan 2025	23	20	6	49
Feb 2025	29	6	3	38
Mar 2025	24	11	0	35
Apr 2025	18	10	0	28
May 2025	28	12	1	41
Jun 2025	47	23	2	72
Jul 2025	23	10	2	35
Aug 2025	37	14	2	53
Sep 2025	58	13	1	72
Oct 2025	21	25	0	46
Nov 2025	23	20	5	48
Dec 2025	29	26	2	57
Jan 2026	56	23	8	87
Feb 2026	44	11	3	58
Mar 2026	28	8	2	38

Latest update: 18 Mar 2026

Short summary

Aura OMI and MLS measurements are combined to produce daily maps of tropospheric ozone beginning October 2004. We show that El Niño Southern Oscillation (ENSO) related inter-annual change in tropospheric ozone in the tropics is small compared to combined intra-seasonal/Madden-Julian Oscillation (MJO) and shorter timescale variability. Outgoing Longwave Radiation indicates that deep convection is the primary driver of the observed ozone variability on all timescales.