James C. Zachos publications per year

The chart shows the history of publications by James C. Zachos between 1985 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. James C. Zachos published across 41 years, from 1985 to 2025, averaging 13.5 papers a year. Output peaked at 61 publications in 2017. 10 of the 555 publications appeared in the last two years.

No. of publications

20 40 60

1985 2025

555 publications in total across all disciplines

View publications per year as a table

James C. Zachos: publications per year, 1985 to 2025
Year	Publications
1985	3
1986	4
1987	2
1988	1
1989	12
1990	2
1991	2
1992	17
1993	2
1994	6
1995	4
1996	2
1997	8
1998	7
1999	12
2000	12
2001	9
2002	8
2003	18
2004	20
2005	26
2006	15
2007	27
2008	11
2009	14
2010	19
2011	21
2012	20
2013	15
2014	26
2015	24
2016	19
2017	61
2018	35
2019	21
2020	19
2021	4
2022	6
2023	11
2024	7
2025	3
Total	555

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James C. Zachos publication distribution in Earth Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where James C. Zachos sits on this spectrum.

No. of scientists

100 200 300 400 500

38–47 publications 603+

This scientist: 534 publications — 98th percentile

98% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 603 publications or more.

View publications distribution as a table

Number of Earth Science scientists by publication count, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
Publications	Scientists	This scientist
38–47	5
48–57	33
58–67	94
68–77	161
78–87	278
88–97	376
98–107	404
108–117	484
118–127	540
128–137	557
138–147	491
148–157	495
158–167	458
168–177	490
178–187	414
188–197	401
198–207	333
208–217	292
218–227	290
228–237	262
238–247	243
248–257	208
258–267	185
268–277	147
278–287	128
288–297	119
298–307	120
308–317	107
318–327	93
328–337	87
338–347	64
348–357	87
358–367	60
368–377	60
378–387	34
388–397	50
398–407	44
408–417	31
418–427	39
428–437	27
438–447	36
448–457	27
458–467	29
468–477	30
478–487	19
488–497	15
498–507	18
508–517	19
518–527	16
528–537	10	534
538–547	11
548–557	14
558–567	11
568–577	7
578–587	14
588–597	5
598–602	4
603+	100

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James C. Zachos D-index placement in Earth Science in 2026

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where James C. Zachos sits on this spectrum.

No. of scientists

100 200 300

30 D-Index 106+

This scientist: 104 D-Index — 99th percentile

99% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 106 D-Index or more.

View D-Index distribution as a table

Number of Earth Science scientists by D-index, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
D-Index	Scientists	This scientist
30	144
31	215
32	278
33	379
34	366
35	372
36	389
37	366
38	344
39	349
40	296
41	289
42	277
43	279
44	248
45	257
46	212
47	202
48	207
49	204
50	183
51	178
52	182
53	178
54	163
55	117
56	163
57	120
58	113
59	136
60	135
61	96
62	103
63	83
64	103
65	83
66	89
67	92
68	89
69	78
70	75
71	53
72	62
73	54
74	35
75	52
76	50
77	32
78	37
79	20
80	33
81	36
82	34
83	34
84	24
85	19
86	18
87	26
88	30
89	17
90	21
91	19
92	15
93	14
94	20
95	9
96	10
97	15
98	13
99	3
100	13
101	3
102	9
103	4
104	6	104
105	6
106+	98

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Research.com Recognitions

2026 - Research.com Earth Science in United States Leader Award
2025 - Research.com Earth Science in United States Leader Award
2018 - Royal Netherlands Academy of Arts and Sciences
2017 - Member of the National Academy of Sciences
2011 - Fellow of the American Academy of Arts and Sciences
2008 - Fellow of American Geophysical Union (AGU)

Overview

James C. Zachos is affiliated with the University of California, Santa Cruz in the United States. Their research primarily focuses on Earth and Planetary Sciences, with a significant concentration in several related subfields.

The main subfields of study include Atmospheric Science, Ocean Engineering, Oceanography, Paleontology, and Ecology. These areas reflect the scope of their investigation into Earth's climatic and geological history.

The key topics covered in their work are:

Geology and Paleoclimatology Research
Paleontology and Stratigraphy of Fossils
Drilling and Well Engineering
Isotope Analysis in Ecology
Reservoir Engineering and Simulation Methods
Methane Hydrates and Related Phenomena
Marine and Coastal Ecosystems

Zachos has contributed significantly to scientific literature, with recent papers published in prestigious journals. Selected recent works include:

"An astronomically dated record of Earth's climate and its predictability over the last 66 million years," 2020, Science
"On impact and volcanism across the Cretaceous-Paleogene boundary," 2020, Science
"Global warming in the pipeline," 2023, Oxford Open Climate Change
"Toward a Cenozoic history of atmospheric CO ₂," 2023, Science
"Ice retreat in Wilkes Basin of East Antarctica during a warm interglacial," 2020, Nature

Their frequent co-authors include Isabella Raffi, Jan Backman, Paul N. Pearson, Ursula Röhl, and Timothy J. Bralower, with multiple joint publications.

Zachos has published extensively in venues such as Zenodo (CERN European Organization for Nuclear Research), Paleoceanography and Paleoclimatology, Abstracts with programs - Geological Society of America, OPAL (Open@LaTrobe) from La Trobe University, and Science.

Recognition of their scientific contributions is reflected in several awards, including:

Royal Netherlands Academy of Arts and Sciences, 2018
Member of the National Academy of Sciences, 2017
Fellow of the American Academy of Arts and Sciences, 2011
Fellow of American Geophysical Union (AGU), 2008

Best Publications

Trends, Rhythms, and Aberrations in Global Climate 65 Ma to Present

James Zachos;Mark Pagani;Lisa Sloan;Ellen Thomas;Ellen Thomas

12161
Citations
An early Cenozoic perspective on greenhouse warming and carbon-cycle dynamics

James C. Zachos;Gerald R. Dickens;Richard E. Zeebe

3859
Citations
Target atmospheric CO2: Where should humanity aim?

James Hansen;Makiko Sato;Pushker Kharecha;David Beerling

2000
Citations
An astronomically dated record of Earth's climate and its predictability over the last 66 million years.

Thomas Westerhold;Norbert Marwan;Norbert Marwan;Anna Joy Drury;Anna Joy Drury;Diederik Liebrand

1871
Citations
Rapid acidification of the ocean during the Paleocene-Eocene thermal maximum.

James C. Zachos;Ursula Röhl;Stephen A. Schellenberg;Appy Sluijs

1382
Citations
The Geological Record of Ocean Acidification

Bärbel Hönisch;Andy Ridgwell;Daniela N. Schmidt;Ellen Thomas;Ellen Thomas

1239
Citations
Marked Decline in Atmospheric Carbon Dioxide Concentrations During the Paleogene

Mark Pagani;James C. Zachos;James C. Zachos;James C. Zachos;Katherine H. Freeman;Katherine H. Freeman;Katherine H. Freeman;Brett Tipple;Brett Tipple;Brett Tipple

1116
Citations
Assessing "dangerous climate change": required reduction of carbon emissions to protect young people, future generations and nature.

James E. Hansen;Pushker A. Kharecha;Pushker A. Kharecha;Makiko H. Sato;Valerie Masson-Delmotte

981
Citations
Evolution of Early Cenozoic marine temperatures

James C. Zachos;Lowell D. Stott;Kyger C. Lohmann

960
Citations
A Transient Rise in Tropical Sea Surface Temperature During the Paleocene-Eocene Thermal Maximum

James C. Zachos;Michael W. Wara;Steven Bohaty;Margaret L. Delaney

816
Citations
Correlation between isotope records in marine and continental carbon reservoirs near the Palaeocene/Eocene boundary

Paul L. Koch;James C. Zachos;Philip D. Gingerich

815
Citations
Abrupt climate change and transient climates during the Paleogene: a marine perspective.

James C. Zachos;Kyger C. Lohmann;James C. G. Walker;Sherwood W. Wise

687
Citations
Astronomical pacing of late Palaeocene to early Eocene global warming events

Lucas J. Lourens;Appy Sluijs;Dick Kroon;James C. Zachos

677
Citations
Climate response to orbital forcing across the Oligocene-Miocene boundary.

James C. Zachos;Nicholas J. Shackleton;Justin S. Revenaugh;Heiko Pälike

631
Citations
High‐resolution (104 years) deep‐sea foraminiferal stable isotope records of the Eocene‐Oligocene climate transition

James C. Zachos;Terrence M. Quinn;Karen A. Salamy

557
Citations
On the duration of the Paleocene-Eocene thermal maximum (PETM)

Ursula Röhl;Thomas Westerhold;Timothy J. Bralower;James C. Zachos

532
Citations
Carbon dioxide forcing alone insufficient to explain Palaeocene–Eocene Thermal Maximum warming

Richard E. Zeebe;James C. Zachos;Gerald R. Dickens

510
Citations
Significant Southern Ocean warming event in the late middle Eocene

Steven M. Bohaty;James C. Zachos

505
Citations
Extreme warming of mid-latitude coastal ocean during the Paleocene-Eocene Thermal Maximum: Inferences from TEX86 and isotope data

J.C. Zachos;S. Schouten;S. Bohaty;T. Quattlebaum

468
Citations
Early Cenozoic decoupling of the global carbon and sulfur cycles

A. C. Kurtz;L. R. Kump;M. A. Arthur;J. C. Zachos

455
Citations
The geological record of ocean acidification

B. Hoenisch;A. J. Ridgwell;E. Thomas;J. C. Zachos

0
Citations

Frequent Co-Authors

Thomas Westerhold University of Bremen

Ellen Thomas Yale University

Isabella Raffi University of Chieti-Pescara

Steven M Bohaty University of Southampton

Appy Sluijs Utrecht University

Roy H Wilkens University of Hawaiʻi Sea Grant

Lucas Joost Lourens Utrecht University

Richard E. Zeebe University of Hawaii at Manoa

Timothy J. Bralower Pennsylvania State University

Dick Kroon University of Edinburgh

External Links

Wikipedia of James C. Zachos Personal website of James C. Zachos

If you think any of the details on this page are incorrect, let us know.

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