Mean age of stratospheric air derived from AirCore observations

Engel, Andreas; Bönisch, Harald; Ullrich, Markus; Sitals, Robert; Membrive, Olivier; Danis, Francois; Crevoisier, Cyril

doi:10.5194/acp-17-6825-2017

Articles | Volume 17, issue 11

https://doi.org/10.5194/acp-17-6825-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-17-6825-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 11

Research article

|

12 Jun 2017

Research article |

| 12 Jun 2017

Mean age of stratospheric air derived from AirCore observations

Andreas Engel, Harald Bönisch, Markus Ullrich, Robert Sitals, Olivier Membrive, Francois Danis, and Cyril Crevoisier

Viewed

Total article views: 5,011 (including HTML, PDF, and XML)

HTML	PDF	XML	Total	BibTeX	EndNote
3,283	1,565	163	5,011	282	192

HTML: 3,283
PDF: 1,565
XML: 163
Total: 5,011
BibTeX: 282
EndNote: 192

Views and downloads (calculated since 08 Feb 2017)

Month	HTML	PDF	XML	Total
Feb 2017	125	50	5	180
Mar 2017	54	13	14	81
Apr 2017	40	7	10	57
May 2017	40	11	8	59
Jun 2017	241	91	8	340
Jul 2017	41	28	0	69
Aug 2017	20	17	0	37
Sep 2017	21	17	1	39
Oct 2017	14	17	0	31
Nov 2017	17	19	1	37
Dec 2017	15	7	0	22
Jan 2018	15	12	0	27
Feb 2018	25	13	1	39
Mar 2018	15	16	0	31
Apr 2018	11	10	0	21
May 2018	17	10	1	28
Jun 2018	11	17	0	28
Jul 2018	9	13	0	22
Aug 2018	20	14	0	34
Sep 2018	21	15	0	36
Oct 2018	14	16	3	33
Nov 2018	12	10	2	24
Dec 2018	9	5	1	15
Jan 2019	7	11	2	20
Feb 2019	7	23	0	30
Mar 2019	8	6	1	15
Apr 2019	6	10	0	16
May 2019	9	10	2	21
Jun 2019	6	3	0	9
Jul 2019	6	6	0	12
Aug 2019	6	8	1	15
Sep 2019	4	2	0	6
Oct 2019	13	7	2	22
Nov 2019	6	5	1	12
Dec 2019	6	8	1	15
Jan 2020	12	5	1	18
Feb 2020	11	4	1	16
Mar 2020	2	2	0	4
Apr 2020	5	5	0	10
May 2020	13	16	0	29
Jun 2020	21	13	0	34
Jul 2020	18	10	4	32
Aug 2020	19	4	3	26
Sep 2020	12	7	0	19
Oct 2020	4	3	0	7
Nov 2020	12	8	3	23
Dec 2020	13	16	0	29
Jan 2021	19	10	0	29
Feb 2021	5	5	1	11
Mar 2021	10	11	0	21
Apr 2021	28	12	1	41
May 2021	15	12	3	30
Jun 2021	7	17	1	25
Jul 2021	6	13	0	19
Aug 2021	8	8	1	17
Sep 2021	12	9	1	22
Oct 2021	14	42	0	56
Nov 2021	19	42	0	61
Dec 2021	22	13	3	38
Jan 2022	37	13	1	51
Feb 2022	44	13	1	58
Mar 2022	64	9	1	74
Apr 2022	58	6	1	65
May 2022	35	8	0	43
Jun 2022	33	7	2	42
Jul 2022	30	7	1	38
Aug 2022	39	8	1	48
Sep 2022	32	8	0	40
Oct 2022	21	6	4	31
Nov 2022	24	16	0	40
Dec 2022	19	6	0	25
Jan 2023	15	7	0	22
Feb 2023	20	16	1	37
Mar 2023	26	14	0	40
Apr 2023	17	15	0	32
May 2023	33	14	0	47
Jun 2023	37	9	1	47
Jul 2023	50	8	2	60
Aug 2023	42	18	3	63
Sep 2023	44	7	1	52
Oct 2023	64	11	3	78
Nov 2023	35	3	0	38
Dec 2023	82	9	3	94
Jan 2024	61	15	1	77
Feb 2024	59	23	0	82
Mar 2024	69	26	2	97
Apr 2024	65	27	4	96
May 2024	50	29	1	80
Jun 2024	61	25	2	88
Jul 2024	39	25	4	68
Aug 2024	53	15	3	71
Sep 2024	34	10	0	44
Oct 2024	33	15	0	48
Nov 2024	82	8	2	92
Dec 2024	57	24	0	81
Jan 2025	68	57	1	126
Feb 2025	66	44	5	115
Mar 2025	34	33	6	73
Apr 2025	25	15	0	40
May 2025	43	9	0	52
Jun 2025	65	18	7	90
Jul 2025	38	26	0	64
Aug 2025	46	16	4	66
Sep 2025	57	15	2	74
Oct 2025	30	24	0	54
Nov 2025	49	14	5	68

Cumulative views and downloads (calculated since 08 Feb 2017)

Month	HTML	PDF	XML	Total
Feb 2017	125	50	5	180
Mar 2017	54	13	14	81
Apr 2017	40	7	10	57
May 2017	40	11	8	59
Jun 2017	241	91	8	340
Jul 2017	41	28	0	69
Aug 2017	20	17	0	37
Sep 2017	21	17	1	39
Oct 2017	14	17	0	31
Nov 2017	17	19	1	37
Dec 2017	15	7	0	22
Jan 2018	15	12	0	27
Feb 2018	25	13	1	39
Mar 2018	15	16	0	31
Apr 2018	11	10	0	21
May 2018	17	10	1	28
Jun 2018	11	17	0	28
Jul 2018	9	13	0	22
Aug 2018	20	14	0	34
Sep 2018	21	15	0	36
Oct 2018	14	16	3	33
Nov 2018	12	10	2	24
Dec 2018	9	5	1	15
Jan 2019	7	11	2	20
Feb 2019	7	23	0	30
Mar 2019	8	6	1	15
Apr 2019	6	10	0	16
May 2019	9	10	2	21
Jun 2019	6	3	0	9
Jul 2019	6	6	0	12
Aug 2019	6	8	1	15
Sep 2019	4	2	0	6
Oct 2019	13	7	2	22
Nov 2019	6	5	1	12
Dec 2019	6	8	1	15
Jan 2020	12	5	1	18
Feb 2020	11	4	1	16
Mar 2020	2	2	0	4
Apr 2020	5	5	0	10
May 2020	13	16	0	29
Jun 2020	21	13	0	34
Jul 2020	18	10	4	32
Aug 2020	19	4	3	26
Sep 2020	12	7	0	19
Oct 2020	4	3	0	7
Nov 2020	12	8	3	23
Dec 2020	13	16	0	29
Jan 2021	19	10	0	29
Feb 2021	5	5	1	11
Mar 2021	10	11	0	21
Apr 2021	28	12	1	41
May 2021	15	12	3	30
Jun 2021	7	17	1	25
Jul 2021	6	13	0	19
Aug 2021	8	8	1	17
Sep 2021	12	9	1	22
Oct 2021	14	42	0	56
Nov 2021	19	42	0	61
Dec 2021	22	13	3	38
Jan 2022	37	13	1	51
Feb 2022	44	13	1	58
Mar 2022	64	9	1	74
Apr 2022	58	6	1	65
May 2022	35	8	0	43
Jun 2022	33	7	2	42
Jul 2022	30	7	1	38
Aug 2022	39	8	1	48
Sep 2022	32	8	0	40
Oct 2022	21	6	4	31
Nov 2022	24	16	0	40
Dec 2022	19	6	0	25
Jan 2023	15	7	0	22
Feb 2023	20	16	1	37
Mar 2023	26	14	0	40
Apr 2023	17	15	0	32
May 2023	33	14	0	47
Jun 2023	37	9	1	47
Jul 2023	50	8	2	60
Aug 2023	42	18	3	63
Sep 2023	44	7	1	52
Oct 2023	64	11	3	78
Nov 2023	35	3	0	38
Dec 2023	82	9	3	94
Jan 2024	61	15	1	77
Feb 2024	59	23	0	82
Mar 2024	69	26	2	97
Apr 2024	65	27	4	96
May 2024	50	29	1	80
Jun 2024	61	25	2	88
Jul 2024	39	25	4	68
Aug 2024	53	15	3	71
Sep 2024	34	10	0	44
Oct 2024	33	15	0	48
Nov 2024	82	8	2	92
Dec 2024	57	24	0	81
Jan 2025	68	57	1	126
Feb 2025	66	44	5	115
Mar 2025	34	33	6	73
Apr 2025	25	15	0	40
May 2025	43	9	0	52
Jun 2025	65	18	7	90
Jul 2025	38	26	0	64
Aug 2025	46	16	4	66
Sep 2025	57	15	2	74
Oct 2025	30	24	0	54
Nov 2025	49	14	5	68

Viewed (geographical distribution)

Total article views: 5,011 (including HTML, PDF, and XML) Thereof 5,011 with geography defined and 0 with unknown origin.

Country	#	Views	%

1

1

Latest update: 22 Nov 2025

Short summary

AirCore is new technique for sampling stratospheric air. We present new observations of CO₂ and CH₄ using AirCore and derive stratospheric transport time, called the mean age of air. The purpose of using AirCore is to provide a cost-effective tool for deriving mean age. Mean age may serve as a proxy to investigate changes in stratospheric circulation. We show that there is no statistically significant trend in our 40-year time series of mean age, which is now extended using AirCore.


Total:	0
HTML:	0
PDF:	0
XML:	0


Total:	0
HTML:	0
PDF:	0
XML:	0


Total:	0
HTML:	0
PDF:	0
XML:	0