Stratospheric gravity waves at Southern Hemisphere orographic
hotspots: 2003–2014 AIRS/Aqua observations

Hoffmann, Lars; Grimsdell, Alison W.; Alexander, M. Joan

doi:10.5194/acp-16-9381-2016

Articles | Volume 16, issue 14

https://doi.org/10.5194/acp-16-9381-2016

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

https://doi.org/10.5194/acp-16-9381-2016

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

Articles | Volume 16, issue 14

Research article

|

28 Jul 2016

Research article |

| 28 Jul 2016

Stratospheric gravity waves at Southern Hemisphere orographic hotspots: 2003–2014 AIRS/Aqua observations

Lars Hoffmann, Alison W. Grimsdell, and M. Joan Alexander

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Views and downloads (calculated since 09 May 2016)

Month	HTML	PDF	XML	Total
May 2016	100	39	2	141
Jun 2016	17	8	2	27
Jul 2016	51	15	2	68
Aug 2016	48	20	1	69
Sep 2016	13	9	0	22
Oct 2016	17	6	0	23
Nov 2016	12	3	0	15
Dec 2016	4	6	0	10
Jan 2017	21	8	0	29
Feb 2017	16	9	1	26
Mar 2017	23	10	1	34
Apr 2017	24	8	3	35
May 2017	27	13	1	41
Jun 2017	37	8	1	46
Jul 2017	33	24	0	57
Aug 2017	31	12	0	43
Sep 2017	19	11	1	31
Oct 2017	14	13	0	27
Nov 2017	13	18	0	31
Dec 2017	9	9	0	18
Jan 2018	9	14	0	23
Feb 2018	11	12	0	23
Mar 2018	11	27	0	38
Apr 2018	16	53	0	69
May 2018	14	54	1	69
Jun 2018	4	42	0	46
Jul 2018	6	49	0	55
Aug 2018	13	58	0	71
Sep 2018	9	50	1	60
Oct 2018	11	63	3	77
Nov 2018	19	48	1	68
Dec 2018	14	30	0	44
Jan 2019	8	13	2	23
Feb 2019	5	5	0	10
Mar 2019	8	10	0	18
Apr 2019	5	10	0	15
May 2019	9	10	0	19
Jun 2019	4	8	0	12
Jul 2019	9	7	2	18
Aug 2019	8	6	0	14
Sep 2019	5	4	0	9
Oct 2019	6	5	1	12
Nov 2019	8	3	0	11
Dec 2019	7	14	0	21
Jan 2020	5	3	1	9
Feb 2020	8	3	2	13
Mar 2020	3	4	0	7
Apr 2020	2	4	0	6
May 2020	11	8	1	20
Jun 2020	10	12	0	22
Jul 2020	13	13	3	29
Aug 2020	13	4	1	18
Sep 2020	8	5	2	15
Oct 2020	8	10	0	18
Nov 2020	9	2	0	11
Dec 2020	8	6	0	14
Jan 2021	18	11	0	29
Feb 2021	5	10	0	15
Mar 2021	10	10	0	20
Apr 2021	8	5	0	13
May 2021	12	5	1	18
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Jul 2021	9	16	0	25
Aug 2021	6	7	0	13
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Oct 2021	11	33	0	44
Nov 2021	7	25	0	32
Dec 2021	20	12	1	33
Jan 2022	18	39	1	58
Feb 2022	18	31	2	51
Mar 2022	42	36	0	78
Apr 2022	37	36	1	74
May 2022	18	22	0	40
Jun 2022	9	6	0	15
Jul 2022	34	35	1	70
Aug 2022	37	32	0	69
Sep 2022	4	5	0	9
Oct 2022	13	4	0	17
Nov 2022	17	9	0	26
Dec 2022	14	6	1	21
Jan 2023	11	10	1	22
Feb 2023	10	3	0	13
Mar 2023	20	17	1	38
Apr 2023	6	15	0	21
May 2023	31	9	0	40
Jun 2023	36	3	1	40
Jul 2023	43	6	1	50
Aug 2023	38	8	4	50
Sep 2023	41	2	0	43
Oct 2023	41	10	3	54
Nov 2023	29	1	0	30
Dec 2023	44	9	2	55
Jan 2024	38	11	1	50
Feb 2024	42	11	1	54
Mar 2024	53	6	2	61
Apr 2024	49	7	3	59
May 2024	18	12	2	32
Jun 2024	17	13	2	32
Jul 2024	17	5	3	25
Aug 2024	33	7	3	43
Sep 2024	10	4	0	14
Oct 2024	16	5	0	21
Nov 2024	9	9	2	20
Dec 2024	17	18	2	37
Jan 2025	16	13	3	32
Feb 2025	30	7	3	40
Mar 2025	22	10	0	32
Apr 2025	22	10	2	34
May 2025	24	10	1	35
Jun 2025	49	10	2	61
Jul 2025	29	11	0	40
Aug 2025	43	5	2	50
Sep 2025	52	19	2	73
Oct 2025	21	27	1	49
Nov 2025	6	5	0	11

Cumulative views and downloads (calculated since 09 May 2016)

Month	HTML	PDF	XML	Total
May 2016	100	39	2	141
Jun 2016	17	8	2	27
Jul 2016	51	15	2	68
Aug 2016	48	20	1	69
Sep 2016	13	9	0	22
Oct 2016	17	6	0	23
Nov 2016	12	3	0	15
Dec 2016	4	6	0	10
Jan 2017	21	8	0	29
Feb 2017	16	9	1	26
Mar 2017	23	10	1	34
Apr 2017	24	8	3	35
May 2017	27	13	1	41
Jun 2017	37	8	1	46
Jul 2017	33	24	0	57
Aug 2017	31	12	0	43
Sep 2017	19	11	1	31
Oct 2017	14	13	0	27
Nov 2017	13	18	0	31
Dec 2017	9	9	0	18
Jan 2018	9	14	0	23
Feb 2018	11	12	0	23
Mar 2018	11	27	0	38
Apr 2018	16	53	0	69
May 2018	14	54	1	69
Jun 2018	4	42	0	46
Jul 2018	6	49	0	55
Aug 2018	13	58	0	71
Sep 2018	9	50	1	60
Oct 2018	11	63	3	77
Nov 2018	19	48	1	68
Dec 2018	14	30	0	44
Jan 2019	8	13	2	23
Feb 2019	5	5	0	10
Mar 2019	8	10	0	18
Apr 2019	5	10	0	15
May 2019	9	10	0	19
Jun 2019	4	8	0	12
Jul 2019	9	7	2	18
Aug 2019	8	6	0	14
Sep 2019	5	4	0	9
Oct 2019	6	5	1	12
Nov 2019	8	3	0	11
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Jan 2020	5	3	1	9
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Jul 2020	13	13	3	29
Aug 2020	13	4	1	18
Sep 2020	8	5	2	15
Oct 2020	8	10	0	18
Nov 2020	9	2	0	11
Dec 2020	8	6	0	14
Jan 2021	18	11	0	29
Feb 2021	5	10	0	15
Mar 2021	10	10	0	20
Apr 2021	8	5	0	13
May 2021	12	5	1	18
Jun 2021	8	8	0	16
Jul 2021	9	16	0	25
Aug 2021	6	7	0	13
Sep 2021	12	12	0	24
Oct 2021	11	33	0	44
Nov 2021	7	25	0	32
Dec 2021	20	12	1	33
Jan 2022	18	39	1	58
Feb 2022	18	31	2	51
Mar 2022	42	36	0	78
Apr 2022	37	36	1	74
May 2022	18	22	0	40
Jun 2022	9	6	0	15
Jul 2022	34	35	1	70
Aug 2022	37	32	0	69
Sep 2022	4	5	0	9
Oct 2022	13	4	0	17
Nov 2022	17	9	0	26
Dec 2022	14	6	1	21
Jan 2023	11	10	1	22
Feb 2023	10	3	0	13
Mar 2023	20	17	1	38
Apr 2023	6	15	0	21
May 2023	31	9	0	40
Jun 2023	36	3	1	40
Jul 2023	43	6	1	50
Aug 2023	38	8	4	50
Sep 2023	41	2	0	43
Oct 2023	41	10	3	54
Nov 2023	29	1	0	30
Dec 2023	44	9	2	55
Jan 2024	38	11	1	50
Feb 2024	42	11	1	54
Mar 2024	53	6	2	61
Apr 2024	49	7	3	59
May 2024	18	12	2	32
Jun 2024	17	13	2	32
Jul 2024	17	5	3	25
Aug 2024	33	7	3	43
Sep 2024	10	4	0	14
Oct 2024	16	5	0	21
Nov 2024	9	9	2	20
Dec 2024	17	18	2	37
Jan 2025	16	13	3	32
Feb 2025	30	7	3	40
Mar 2025	22	10	0	32
Apr 2025	22	10	2	34
May 2025	24	10	1	35
Jun 2025	49	10	2	61
Jul 2025	29	11	0	40
Aug 2025	43	5	2	50
Sep 2025	52	19	2	73
Oct 2025	21	27	1	49
Nov 2025	6	5	0	11

Latest update: 08 Nov 2025

Short summary

We present a 12-year record (2003-2014) of stratospheric gravity wave activity at Southern Hemisphere orographic hotspots as observed by the AIRS/Aqua satellite instrument. We introduce a method to discriminate between gravity waves from orographic or other sources and propose a simple model to predict the occurrence of mountain waves using zonal wind thresholds. The prediction model can help to disentangle upper level wind effects from low level source and other influences.