Description of the resolution hierarchy of the global coupled HadGEM3-GC3.1 model as used in CMIP6 HighResMIP experiments

Roberts, Malcolm J.; Baker, Alex; Blockley, Ed W.; Calvert, Daley; Coward, Andrew; Hewitt, Helene T.; Jackson, Laura C.; Kuhlbrodt, Till; Mathiot, Pierre; Roberts, Christopher D.; Schiemann, Reinhard; Seddon, Jon; Vannière, Benoît; Vidale, Pier Luigi

doi:10.5194/gmd-12-4999-2019

Articles | Volume 12, issue 12

https://doi.org/10.5194/gmd-12-4999-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

CMIP6 HighResMIP model descriptions and basic properties

https://doi.org/10.5194/gmd-12-4999-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 12

Model experiment description paper

|

03 Dec 2019

Model experiment description paper |

| 03 Dec 2019

Description of the resolution hierarchy of the global coupled HadGEM3-GC3.1 model as used in CMIP6 HighResMIP experiments

Malcolm J. Roberts, Alex Baker, Ed W. Blockley, Daley Calvert, Andrew Coward, Helene T. Hewitt, Laura C. Jackson, Till Kuhlbrodt, Pierre Mathiot, Christopher D. Roberts, Reinhard Schiemann, Jon Seddon, Benoît Vannière, and Pier Luigi Vidale

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Sep 2019	31	25	0	56
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Nov 2019	26	22	0	48
Dec 2019	261	83	2	346
Jan 2020	73	59	1	133
Feb 2020	55	36	0	91
Mar 2020	46	37	1	84
Apr 2020	61	24	0	85
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Nov 2020	47	33	0	80
Dec 2020	25	28	0	53
Jan 2021	62	20	1	83
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Apr 2021	46	23	0	69
May 2021	47	31	1	79
Jun 2021	44	25	2	71
Jul 2021	48	27	0	75
Aug 2021	45	30	1	76
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Oct 2021	45	62	2	109
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Jan 2022	63	32	2	97
Feb 2022	60	29	1	90
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Apr 2022	64	35	2	101
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Jul 2022	64	27	0	91
Aug 2022	155	18	0	173
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Oct 2022	89	28	1	118
Nov 2022	79	29	0	108
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May 2023	76	43	0	119
Jun 2023	64	37	3	104
Jul 2023	86	32	1	119
Aug 2023	94	37	3	134
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Oct 2023	336	38	3	377
Nov 2023	295	31	0	326
Dec 2023	62	28	1	91
Jan 2024	60	20	1	81
Feb 2024	76	29	2	107
Mar 2024	82	42	3	127
Apr 2024	82	34	4	120
May 2024	83	37	6	126
Jun 2024	100	34	1	135
Jul 2024	63	27	0	90
Aug 2024	104	19	4	127
Sep 2024	90	24	0	114
Oct 2024	109	27	1	137
Nov 2024	76	18	4	98
Dec 2024	76	22	4	102
Jan 2025	105	29	3	137
Feb 2025	110	18	5	133
Mar 2025	102	17	2	121
Apr 2025	109	21	1	131
May 2025	163	13	2	178
Jun 2025	134	27	1	162
Jul 2025	171	34	5	210
Aug 2025	101	19	4	124
Sep 2025	145	17	5	167
Oct 2025	99	35	5	139
Nov 2025	98	23	2	123

Cumulative views and downloads (calculated since 11 Jun 2019)

Month	HTML	PDF	XML	Total
Jun 2019	140	60	2	202
Jul 2019	67	28	0	95
Aug 2019	23	22	0	45
Sep 2019	31	25	0	56
Oct 2019	25	21	0	46
Nov 2019	26	22	0	48
Dec 2019	261	83	2	346
Jan 2020	73	59	1	133
Feb 2020	55	36	0	91
Mar 2020	46	37	1	84
Apr 2020	61	24	0	85
May 2020	65	17	1	83
Jun 2020	64	29	0	93
Jul 2020	67	69	7	143
Aug 2020	32	21	2	55
Sep 2020	39	26	0	65
Oct 2020	41	24	2	67
Nov 2020	47	33	0	80
Dec 2020	25	28	0	53
Jan 2021	62	20	1	83
Feb 2021	34	17	0	51
Mar 2021	62	36	0	98
Apr 2021	46	23	0	69
May 2021	47	31	1	79
Jun 2021	44	25	2	71
Jul 2021	48	27	0	75
Aug 2021	45	30	1	76
Sep 2021	47	28	0	75
Oct 2021	45	62	2	109
Nov 2021	39	52	1	92
Dec 2021	49	23	0	72
Jan 2022	63	32	2	97
Feb 2022	60	29	1	90
Mar 2022	91	36	1	128
Apr 2022	64	35	2	101
May 2022	49	26	1	76
Jun 2022	30	33	0	63
Jul 2022	64	27	0	91
Aug 2022	155	18	0	173
Sep 2022	59	27	0	86
Oct 2022	89	28	1	118
Nov 2022	79	29	0	108
Dec 2022	43	26	0	69
Jan 2023	57	26	0	83
Feb 2023	60	25	0	85
Mar 2023	98	37	0	135
Apr 2023	66	44	0	110
May 2023	76	43	0	119
Jun 2023	64	37	3	104
Jul 2023	86	32	1	119
Aug 2023	94	37	3	134
Sep 2023	187	43	0	230
Oct 2023	336	38	3	377
Nov 2023	295	31	0	326
Dec 2023	62	28	1	91
Jan 2024	60	20	1	81
Feb 2024	76	29	2	107
Mar 2024	82	42	3	127
Apr 2024	82	34	4	120
May 2024	83	37	6	126
Jun 2024	100	34	1	135
Jul 2024	63	27	0	90
Aug 2024	104	19	4	127
Sep 2024	90	24	0	114
Oct 2024	109	27	1	137
Nov 2024	76	18	4	98
Dec 2024	76	22	4	102
Jan 2025	105	29	3	137
Feb 2025	110	18	5	133
Mar 2025	102	17	2	121
Apr 2025	109	21	1	131
May 2025	163	13	2	178
Jun 2025	134	27	1	162
Jul 2025	171	34	5	210
Aug 2025	101	19	4	124
Sep 2025	145	17	5	167
Oct 2025	99	35	5	139
Nov 2025	98	23	2	123

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Short summary

We investigate the role that horizontal grid spacing plays in global coupled climate model simulations, together with examining the efficacy of a new design of simulation experiments that is being used by the community for multi-model comparison. We found that finer grid spacing in both atmosphere and ocean–sea ice models leads to a general reduction in bias compared to observations, and that once eddies in the ocean are resolved, several key climate processes are greatly improved.


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