The thermodynamic structure of summer Arctic stratocumulus and the dynamic coupling to the surface

Sotiropoulou, G.; Sedlar, J.; Tjernström, M.; Shupe, M. D.; Brooks, I. M.; Persson, P. O. G.

doi:10.5194/acp-14-12573-2014

Articles | Volume 14, issue 22

https://doi.org/10.5194/acp-14-12573-2014

© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Arctic Summer Cloud Ocean Study (ASCOS) (ACP/AMT/OS inter-journal...

https://doi.org/10.5194/acp-14-12573-2014

© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 14, issue 22

Research article

|

28 Nov 2014

Research article |

| 28 Nov 2014

The thermodynamic structure of summer Arctic stratocumulus and the dynamic coupling to the surface

G. Sotiropoulou, J. Sedlar, M. Tjernström, M. D. Shupe, I. M. Brooks, and P. O. G. Persson

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Jun 2014	6	21	0	27
Jul 2014	7	14	2	23
Aug 2014	5	11	3	19
Sep 2014	3	10	0	13
Oct 2014	6	9	2	17
Nov 2014	105	43	4	152
Dec 2014	91	91	1	183
Jan 2015	20	40	0	60
Feb 2015	23	12	0	35
Mar 2015	23	6	1	30
Apr 2015	18	2	0	20
May 2015	11	14	0	25
Jun 2015	38	8	3	49
Jul 2015	36	13	1	50
Aug 2015	14	10	2	26
Sep 2015	8	19	1	28
Oct 2015	31	9	1	41
Nov 2015	37	18	3	58
Dec 2015	12	20	1	33
Jan 2016	41	15	1	57
Feb 2016	23	12	0	35
Mar 2016	21	8	0	29
Apr 2016	7	9	0	16
May 2016	11	9	0	20
Jun 2016	5	5	2	12
Jul 2016	10	7	3	20
Aug 2016	12	9	1	22
Sep 2016	12	8	0	20
Oct 2016	13	10	0	23
Nov 2016	11	7	0	18
Dec 2016	6	10	1	17
Jan 2017	18	6	0	24
Feb 2017	15	10	0	25
Mar 2017	14	5	2	21
Apr 2017	21	5	0	26
May 2017	23	6	1	30
Jun 2017	20	7	1	28
Jul 2017	17	6	1	24
Aug 2017	6	9	2	17
Sep 2017	7	14	0	21
Oct 2017	7	10	0	17
Nov 2017	6	7	0	13
Dec 2017	5	8	0	13
Jan 2018	4	10	1	15
Feb 2018	5	6	0	11
Mar 2018	11	9	1	21
Apr 2018	6	10	0	16
May 2018	7	10	0	17
Jun 2018	6	11	0	17
Jul 2018	2	6	3	11
Aug 2018	11	10	0	21
Sep 2018	9	12	1	22
Oct 2018	15	13	3	31
Nov 2018	10	13	2	25
Dec 2018	8	10	1	19
Jan 2019	3	10	1	14
Feb 2019	7	5	0	12
Mar 2019	6	6	0	12
Apr 2019	5	4	0	9
May 2019	8	9	0	17
Jun 2019	12	6	1	19
Jul 2019	7	11	0	18
Aug 2019	5	7	1	13
Sep 2019	6	8	0	14
Oct 2019	8	7	1	16
Nov 2019	7	6	0	13
Dec 2019	4	2	1	7
Jan 2020	11	2	0	13
Feb 2020	11	4	1	16
Mar 2020	5	1	6
Apr 2020	10	5	0	15
May 2020	6	5	0	11
Jun 2020	20	2	1	23
Jul 2020	24	11	8	43
Aug 2020	13	9	3	25
Sep 2020	11	7	0	18
Oct 2020	11	9	1	21
Nov 2020	8	2	1	11
Dec 2020	9	15	1	25
Jan 2021	18	10	0	28
Feb 2021	13	6	0	19
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Apr 2021	5	9	0	14
May 2021	5	6	1	12
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Jul 2021	13	15	0	28
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Oct 2021	14	40	1	55
Nov 2021	15	30	0	45
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Jan 2022	20	21	0	41
Feb 2022	11	6	1	18
Mar 2022	9	5	0	14
Apr 2022	8	4	1	13
May 2022	11	15	0	26
Jun 2022	18	3	5	26
Jul 2022	4	3	1	8
Aug 2022	18	1	0	19
Sep 2022	7	5	0	12
Oct 2022	9	7	0	16
Nov 2022	22	7	0	29
Dec 2022	16	5	0	21
Jan 2023	14	13	1	28
Feb 2023	19	7	0	26
Mar 2023	29	9	0	38
Apr 2023	10	10	0	20
May 2023	31	15	0	46
Jun 2023	45	9	1	55
Jul 2023	41	11	0	52
Aug 2023	35	11	3	49
Sep 2023	47	9	1	57
Oct 2023	47	9	2	58
Nov 2023	37	4	0	41
Dec 2023	56	3	0	59
Jan 2024	38	4	0	42
Feb 2024	41	6	0	47
Mar 2024	42	8	1	51
Apr 2024	47	12	5	64
May 2024	30	19	6	55
Jun 2024	44	10	1	55
Jul 2024	20	15	4	39
Aug 2024	36	7	5	48
Sep 2024	24	2	0	26
Oct 2024	40	5	0	45
Nov 2024	26	5	2	33
Dec 2024	19	5	3	27
Jan 2025	21	16	1	38
Feb 2025	20	13	1	34
Mar 2025	27	16	0	43
Apr 2025	22	16	0	38
May 2025	32	11	3	46
Jun 2025	54	12	1	67
Jul 2025	23	15	3	41
Aug 2025	32	16	1	49
Sep 2025	39	20	15	74
Oct 2025	32	27	2	61
Nov 2025	32	22	5	59
Dec 2025	31	28	1	60

Cumulative views and downloads (calculated since 11 Feb 2014)

Month	HTML	PDF	XML	Total
Feb 2014	76	50	4	130
Mar 2014	25	23	3	51
Apr 2014	15	21	2	38
May 2014	18	32	3	53
Jun 2014	6	21	0	27
Jul 2014	7	14	2	23
Aug 2014	5	11	3	19
Sep 2014	3	10	0	13
Oct 2014	6	9	2	17
Nov 2014	105	43	4	152
Dec 2014	91	91	1	183
Jan 2015	20	40	0	60
Feb 2015	23	12	0	35
Mar 2015	23	6	1	30
Apr 2015	18	2	0	20
May 2015	11	14	0	25
Jun 2015	38	8	3	49
Jul 2015	36	13	1	50
Aug 2015	14	10	2	26
Sep 2015	8	19	1	28
Oct 2015	31	9	1	41
Nov 2015	37	18	3	58
Dec 2015	12	20	1	33
Jan 2016	41	15	1	57
Feb 2016	23	12	0	35
Mar 2016	21	8	0	29
Apr 2016	7	9	0	16
May 2016	11	9	0	20
Jun 2016	5	5	2	12
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Aug 2016	12	9	1	22
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Oct 2016	13	10	0	23
Nov 2016	11	7	0	18
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Jan 2017	18	6	0	24
Feb 2017	15	10	0	25
Mar 2017	14	5	2	21
Apr 2017	21	5	0	26
May 2017	23	6	1	30
Jun 2017	20	7	1	28
Jul 2017	17	6	1	24
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Sep 2017	7	14	0	21
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Nov 2017	6	7	0	13
Dec 2017	5	8	0	13
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Mar 2018	11	9	1	21
Apr 2018	6	10	0	16
May 2018	7	10	0	17
Jun 2018	6	11	0	17
Jul 2018	2	6	3	11
Aug 2018	11	10	0	21
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Oct 2018	15	13	3	31
Nov 2018	10	13	2	25
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Apr 2020	10	5	0	15
May 2020	6	5	0	11
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Aug 2020	13	9	3	25
Sep 2020	11	7	0	18
Oct 2020	11	9	1	21
Nov 2020	8	2	1	11
Dec 2020	9	15	1	25
Jan 2021	18	10	0	28
Feb 2021	13	6	0	19
Mar 2021	14	8	0	22
Apr 2021	5	9	0	14
May 2021	5	6	1	12
Jun 2021	13	11	0	24
Jul 2021	13	15	0	28
Aug 2021	11	12	1	24
Sep 2021	11	15	1	27
Oct 2021	14	40	1	55
Nov 2021	15	30	0	45
Dec 2021	11	10	0	21
Jan 2022	20	21	0	41
Feb 2022	11	6	1	18
Mar 2022	9	5	0	14
Apr 2022	8	4	1	13
May 2022	11	15	0	26
Jun 2022	18	3	5	26
Jul 2022	4	3	1	8
Aug 2022	18	1	0	19
Sep 2022	7	5	0	12
Oct 2022	9	7	0	16
Nov 2022	22	7	0	29
Dec 2022	16	5	0	21
Jan 2023	14	13	1	28
Feb 2023	19	7	0	26
Mar 2023	29	9	0	38
Apr 2023	10	10	0	20
May 2023	31	15	0	46
Jun 2023	45	9	1	55
Jul 2023	41	11	0	52
Aug 2023	35	11	3	49
Sep 2023	47	9	1	57
Oct 2023	47	9	2	58
Nov 2023	37	4	0	41
Dec 2023	56	3	0	59
Jan 2024	38	4	0	42
Feb 2024	41	6	0	47
Mar 2024	42	8	1	51
Apr 2024	47	12	5	64
May 2024	30	19	6	55
Jun 2024	44	10	1	55
Jul 2024	20	15	4	39
Aug 2024	36	7	5	48
Sep 2024	24	2	0	26
Oct 2024	40	5	0	45
Nov 2024	26	5	2	33
Dec 2024	19	5	3	27
Jan 2025	21	16	1	38
Feb 2025	20	13	1	34
Mar 2025	27	16	0	43
Apr 2025	22	16	0	38
May 2025	32	11	3	46
Jun 2025	54	12	1	67
Jul 2025	23	15	3	41
Aug 2025	32	16	1	49
Sep 2025	39	20	15	74
Oct 2025	32	27	2	61
Nov 2025	32	22	5	59
Dec 2025	31	28	1	60

Latest update: 26 Dec 2025

Short summary

During ASCOS, clouds are more frequently decoupled from the surface than coupled to it; when coupling occurs it is primary driven by the cloud. Decoupled clouds have a bimodal structure; they are either weakly or strongly decoupled from the surface; the enhancement of the decoupling is possibly due to sublimation of precipitation. Stable clouds (no cloud-driven mixing) are also observed; those are optically thin, often single-phase liquid, with no or negligible precipitation (e.g. fog).