Comparison of ten packages that compute ocean carbonate chemistry

Orr, J. C.; Epitalon, J.-M.; Gattuso, J.-P.

doi:10.5194/bg-12-1483-2015

Articles | Volume 12, issue 5

https://doi.org/10.5194/bg-12-1483-2015

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

https://doi.org/10.5194/bg-12-1483-2015

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

Articles | Volume 12, issue 5

Research article

|

09 Mar 2015

Research article |

| 09 Mar 2015

Comparison of ten packages that compute ocean carbonate chemistry

J. C. Orr, J.-M. Epitalon, and J.-P. Gattuso

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Total article views: 11,182 (including HTML, PDF, and XML)

HTML	PDF	XML	Total	Supplement	BibTeX	EndNote
5,541	5,282	359	11,182	546	303	336

HTML: 5,541
PDF: 5,282
XML: 359
Total: 11,182
Supplement: 546
BibTeX: 303
EndNote: 336

Views and downloads (calculated since 04 Apr 2014)

Month	HTML	PDF	XML	Total
Apr 2014	360	260	13	633
May 2014	53	56	5	114
Jun 2014	71	47	5	123
Jul 2014	20	28	1	49
Aug 2014	48	22	9	79
Sep 2014	24	29	5	58
Oct 2014	36	22	3	61
Nov 2014	22	35	4	61
Dec 2014	15	18	5	38
Jan 2015	21	12	1	34
Feb 2015	38	18	3	59
Mar 2015	282	170	9	461
Apr 2015	99	54	2	155
May 2015	39	32	1	72
Jun 2015	51	49	7	107
Jul 2015	73	33	1	107
Aug 2015	63	20	3	86
Sep 2015	37	68	4	109
Oct 2015	63	50	0	113
Nov 2015	61	41	0	102
Dec 2015	20	21	0	41
Jan 2016	38	29	5	72
Feb 2016	32	30	3	65
Mar 2016	25	25	0	50
Apr 2016	15	19	1	35
May 2016	28	23	6	57
Jun 2016	26	19	10	55
Jul 2016	25	20	6	51
Aug 2016	16	7	2	25
Sep 2016	26	11	2	39
Oct 2016	24	20	1	45
Nov 2016	16	14	2	32
Dec 2016	5	18	1	24
Jan 2017	24	17	0	41
Feb 2017	11	13	2	26
Mar 2017	37	31	6	74
Apr 2017	40	30	2	72
May 2017	39	33	3	75
Jun 2017	47	30	3	80
Jul 2017	25	30	5	60
Aug 2017	15	27	1	43
Sep 2017	20	26	2	48
Oct 2017	16	29	0	45
Nov 2017	20	48	3	71
Dec 2017	9	29	1	39
Jan 2018	30	40	5	75
Feb 2018	37	25	8	70
Mar 2018	21	30	2	53
Apr 2018	13	42	2	57
May 2018	25	51	1	77
Jun 2018	29	29	0	58
Jul 2018	18	27	5	50
Aug 2018	21	39	0	60
Sep 2018	23	31	9	63
Oct 2018	35	32	3	70
Nov 2018	25	37	1	63
Dec 2018	13	29	1	43
Jan 2019	14	38	1	53
Feb 2019	10	32	2	44
Mar 2019	10	22	0	32
Apr 2019	33	24	0	57
May 2019	19	31	2	52
Jun 2019	25	30	1	56
Jul 2019	7	20	0	27
Aug 2019	13	25	1	39
Sep 2019	5	21	1	27
Oct 2019	17	22	1	40
Nov 2019	10	26	1	37
Dec 2019	9	35	3	47
Jan 2020	12	27	1	40
Feb 2020	6	27	1	34
Mar 2020	10	18	2	30
Apr 2020	17	24	2	43
May 2020	25	27	2	54
Jun 2020	32	17	0	49
Jul 2020	20	42	10	72
Aug 2020	13	23	6	42
Sep 2020	21	23	0	44
Oct 2020	10	33	2	45
Nov 2020	16	31	1	48
Dec 2020	21	23	1	45
Jan 2021	32	46	2	80
Feb 2021	31	32	3	66
Mar 2021	23	45	1	69
Apr 2021	21	51	2	74
May 2021	35	46	1	82
Jun 2021	30	34	1	65
Jul 2021	21	40	0	61
Aug 2021	14	28	1	43
Sep 2021	25	43	0	68
Oct 2021	31	65	0	96
Nov 2021	29	51	6	86
Dec 2021	40	49	2	91
Jan 2022	40	38	2	80
Feb 2022	39	48	4	91
Mar 2022	57	64	2	123
Apr 2022	40	32	4	76
May 2022	29	29	2	60
Jun 2022	34	27	2	63
Jul 2022	26	25	2	53
Aug 2022	32	18	1	51
Sep 2022	25	25	2	52
Oct 2022	29	29	1	59
Nov 2022	60	31	1	92
Dec 2022	70	27	3	100
Jan 2023	56	26	1	83
Feb 2023	57	27	5	89
Mar 2023	67	40	1	108
Apr 2023	27	33	0	60
May 2023	42	46	1	89
Jun 2023	39	35	0	74
Jul 2023	37	22	0	59
Aug 2023	48	33	5	86
Sep 2023	40	24	1	65
Oct 2023	54	37	4	95
Nov 2023	23	10	1	34
Dec 2023	56	28	8	92
Jan 2024	40	34	3	77
Feb 2024	41	22	3	66
Mar 2024	38	53	2	93
Apr 2024	40	95	6	141
May 2024	62	87	2	151
Jun 2024	87	75	3	165
Jul 2024	58	70	3	131
Aug 2024	83	66	3	152
Sep 2024	44	72	3	119
Oct 2024	66	93	1	160
Nov 2024	40	61	0	101
Dec 2024	41	72	1	114
Jan 2025	47	68	5	120
Feb 2025	60	62	4	126
Mar 2025	53	66	6	125
Apr 2025	69	33	0	102
May 2025	104	28	0	132
Jun 2025	114	26	6	146
Jul 2025	83	36	2	121
Aug 2025	73	29	1	103
Sep 2025	70	32	2	104
Oct 2025	68	54	2	124
Nov 2025	61	48	3	112

Cumulative views and downloads (calculated since 04 Apr 2014)

Month	HTML	PDF	XML	Total
Apr 2014	360	260	13	633
May 2014	53	56	5	114
Jun 2014	71	47	5	123
Jul 2014	20	28	1	49
Aug 2014	48	22	9	79
Sep 2014	24	29	5	58
Oct 2014	36	22	3	61
Nov 2014	22	35	4	61
Dec 2014	15	18	5	38
Jan 2015	21	12	1	34
Feb 2015	38	18	3	59
Mar 2015	282	170	9	461
Apr 2015	99	54	2	155
May 2015	39	32	1	72
Jun 2015	51	49	7	107
Jul 2015	73	33	1	107
Aug 2015	63	20	3	86
Sep 2015	37	68	4	109
Oct 2015	63	50	0	113
Nov 2015	61	41	0	102
Dec 2015	20	21	0	41
Jan 2016	38	29	5	72
Feb 2016	32	30	3	65
Mar 2016	25	25	0	50
Apr 2016	15	19	1	35
May 2016	28	23	6	57
Jun 2016	26	19	10	55
Jul 2016	25	20	6	51
Aug 2016	16	7	2	25
Sep 2016	26	11	2	39
Oct 2016	24	20	1	45
Nov 2016	16	14	2	32
Dec 2016	5	18	1	24
Jan 2017	24	17	0	41
Feb 2017	11	13	2	26
Mar 2017	37	31	6	74
Apr 2017	40	30	2	72
May 2017	39	33	3	75
Jun 2017	47	30	3	80
Jul 2017	25	30	5	60
Aug 2017	15	27	1	43
Sep 2017	20	26	2	48
Oct 2017	16	29	0	45
Nov 2017	20	48	3	71
Dec 2017	9	29	1	39
Jan 2018	30	40	5	75
Feb 2018	37	25	8	70
Mar 2018	21	30	2	53
Apr 2018	13	42	2	57
May 2018	25	51	1	77
Jun 2018	29	29	0	58
Jul 2018	18	27	5	50
Aug 2018	21	39	0	60
Sep 2018	23	31	9	63
Oct 2018	35	32	3	70
Nov 2018	25	37	1	63
Dec 2018	13	29	1	43
Jan 2019	14	38	1	53
Feb 2019	10	32	2	44
Mar 2019	10	22	0	32
Apr 2019	33	24	0	57
May 2019	19	31	2	52
Jun 2019	25	30	1	56
Jul 2019	7	20	0	27
Aug 2019	13	25	1	39
Sep 2019	5	21	1	27
Oct 2019	17	22	1	40
Nov 2019	10	26	1	37
Dec 2019	9	35	3	47
Jan 2020	12	27	1	40
Feb 2020	6	27	1	34
Mar 2020	10	18	2	30
Apr 2020	17	24	2	43
May 2020	25	27	2	54
Jun 2020	32	17	0	49
Jul 2020	20	42	10	72
Aug 2020	13	23	6	42
Sep 2020	21	23	0	44
Oct 2020	10	33	2	45
Nov 2020	16	31	1	48
Dec 2020	21	23	1	45
Jan 2021	32	46	2	80
Feb 2021	31	32	3	66
Mar 2021	23	45	1	69
Apr 2021	21	51	2	74
May 2021	35	46	1	82
Jun 2021	30	34	1	65
Jul 2021	21	40	0	61
Aug 2021	14	28	1	43
Sep 2021	25	43	0	68
Oct 2021	31	65	0	96
Nov 2021	29	51	6	86
Dec 2021	40	49	2	91
Jan 2022	40	38	2	80
Feb 2022	39	48	4	91
Mar 2022	57	64	2	123
Apr 2022	40	32	4	76
May 2022	29	29	2	60
Jun 2022	34	27	2	63
Jul 2022	26	25	2	53
Aug 2022	32	18	1	51
Sep 2022	25	25	2	52
Oct 2022	29	29	1	59
Nov 2022	60	31	1	92
Dec 2022	70	27	3	100
Jan 2023	56	26	1	83
Feb 2023	57	27	5	89
Mar 2023	67	40	1	108
Apr 2023	27	33	0	60
May 2023	42	46	1	89
Jun 2023	39	35	0	74
Jul 2023	37	22	0	59
Aug 2023	48	33	5	86
Sep 2023	40	24	1	65
Oct 2023	54	37	4	95
Nov 2023	23	10	1	34
Dec 2023	56	28	8	92
Jan 2024	40	34	3	77
Feb 2024	41	22	3	66
Mar 2024	38	53	2	93
Apr 2024	40	95	6	141
May 2024	62	87	2	151
Jun 2024	87	75	3	165
Jul 2024	58	70	3	131
Aug 2024	83	66	3	152
Sep 2024	44	72	3	119
Oct 2024	66	93	1	160
Nov 2024	40	61	0	101
Dec 2024	41	72	1	114
Jan 2025	47	68	5	120
Feb 2025	60	62	4	126
Mar 2025	53	66	6	125
Apr 2025	69	33	0	102
May 2025	104	28	0	132
Jun 2025	114	26	6	146
Jul 2025	83	36	2	121
Aug 2025	73	29	1	103
Sep 2025	70	32	2	104
Oct 2025	68	54	2	124
Nov 2025	61	48	3	112

Latest update: 24 Nov 2025

Short summary

Basic marine carbonate system variables such as pH are often computed from others. Such calculations are made with many public software packages, but their results have never been compared. A new study compares 10 of these packages, quantifying differences, isolating causes, and making recommendations to reduce future discrepancies. This comparison effort has led to more than a 10-fold reduction in differences between packages for some computed variables.