Helmuth Thomas

7.0k total citations · 1 hit paper
131 papers, 4.0k citations indexed

About

Helmuth Thomas is a scholar working on Oceanography, Global and Planetary Change and Atmospheric Science. According to data from OpenAlex, Helmuth Thomas has authored 131 papers receiving a total of 4.0k indexed citations (citations by other indexed papers that have themselves been cited), including 105 papers in Oceanography, 43 papers in Global and Planetary Change and 38 papers in Atmospheric Science. Recurrent topics in Helmuth Thomas's work include Marine and coastal ecosystems (86 papers), Ocean Acidification Effects and Responses (66 papers) and Marine Biology and Ecology Research (26 papers). Helmuth Thomas is often cited by papers focused on Marine and coastal ecosystems (86 papers), Ocean Acidification Effects and Responses (66 papers) and Marine Biology and Ecology Research (26 papers). Helmuth Thomas collaborates with scholars based in Canada, Germany and United States. Helmuth Thomas's co-authors include Yann Bozec, H. J. W. de Baar, Khalid Elkalay, Bernd Schneider, Elizabeth H. Shadwick, Alberto Borges, Laure‐Sophie Schiettecatte, Tim Papakyriakou, V. Ittekkot and Lisa A. Miller and has published in prestigious journals such as Science, Nature Communications and Journal of Geophysical Research Atmospheres.

In The Last Decade

Helmuth Thomas

124 papers receiving 3.9k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

The microbial carbon pump and climate change

2024 122 citations Helmuth Thomas et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Helmuth Thomas Canada	35	3.1k	1.1k	1.0k	795	759	131	4.0k
Jianping Gan Hong Kong	43	4.9k 1.6×	1.6k 1.4×	1.7k 1.6×	1.0k 1.3×	607 0.8×	150	5.8k
Volker Mohrholz Germany	32	3.1k 1.0×	1.5k 1.3×	1.0k 1.0×	1.4k 1.7×	666 0.9×	87	4.3k
Andrew Yool United Kingdom	41	3.3k 1.1×	1.8k 1.6×	1.6k 1.5×	1.4k 1.8×	724 1.0×	107	5.1k
Marcello Vichi South Africa	29	2.9k 0.9×	1.9k 1.7×	1.3k 1.3×	914 1.1×	350 0.5×	106	4.0k
Raymond G. Najjar United States	39	3.3k 1.1×	1.7k 1.5×	1.2k 1.2×	1.3k 1.6×	714 0.9×	98	5.0k
Xinping Hu United States	25	2.8k 0.9×	1.0k 0.9×	522 0.5×	1.3k 1.7×	482 0.6×	78	3.6k
M. Dileep Kumar India	31	2.3k 0.7×	865 0.8×	705 0.7×	828 1.0×	392 0.5×	59	2.9k
Laure Resplandy United States	29	2.8k 0.9×	1.7k 1.5×	812 0.8×	826 1.0×	405 0.5×	78	3.7k
Temel Oǧuz Türkiye	41	3.8k 1.2×	1.4k 1.3×	843 0.8×	1.1k 1.4×	339 0.4×	90	4.8k
Burke Hales United States	37	4.2k 1.4×	2.1k 1.9×	589 0.6×	1.2k 1.6×	373 0.5×	62	4.7k

Countries citing papers authored by Helmuth Thomas

Since Specialization

Citations

This map shows the geographic impact of Helmuth Thomas's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Helmuth Thomas with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Helmuth Thomas more than expected).

Fields of papers citing papers by Helmuth Thomas

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Helmuth Thomas. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Helmuth Thomas. The network helps show where Helmuth Thomas may publish in the future.

Co-authorship network of co-authors of Helmuth Thomas

This figure shows the co-authorship network connecting the top 25 collaborators of Helmuth Thomas. A scholar is included among the top collaborators of Helmuth Thomas based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Helmuth Thomas. Helmuth Thomas is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Daewel, Ute, et al.. (2025). Evaluating ocean alkalinity enhancement as a carbon dioxide removal strategy in the North Sea. Biogeosciences. 22(14). 3699–3719. 1 indexed citations

Jónasdóttir, Sigrún Huld, et al.. (2024). Mercury bioaccumulation and assimilation in marine plankton in meltwater influenced fjords and shelf waters along the east coast of Greenland. Environmental Pollution. 366. 125473–125473.

Beusekom, Justus E. E. van, et al.. (2024). Alkalinity sources in the Dutch Wadden Sea. Ocean science. 20(5). 1423–1440.

Lantuit, Hugues, et al.. (2023). Alkalinity generation from carbonate weathering in a silicate-dominated headwater catchment at Iskorasfjellet, northern Norway. Biogeosciences. 20(16). 3459–3479. 13 indexed citations

Dam, Bryce Van, Mary A. Zeller, Christian Lopes, et al.. (2021). Calcification-driven CO ₂ emissions exceed “Blue Carbon” sequestration in a carbonate seagrass meadow. Science Advances. 7(51). eabj1372–eabj1372. 48 indexed citations

Fennel, Katja, et al.. (2021). A modeling study of temporal and spatial p CO ₂ variability on the biologically active and temperature-dominated Scotian Shelf. 1 indexed citations

Pätsch, Johannes, et al.. (2020). The impact of intertidal areas on the carbonate system of the southern North Sea. Biogeosciences. 17(16). 4223–4245. 4 indexed citations

Mucci, Alfonso, et al.. (2020). The recent state and variability of the carbonate system of the Canadian Arctic in the context of ocean acidification. 1 indexed citations

Thomas, Helmuth, et al.. (2020). Spatial variations in CO ₂ fluxes in the Saguenay Fjord (Quebec, Canada) and results of a water mixing model. Biogeosciences. 17(2). 547–566. 13 indexed citations

10.

Hay, Alex E., et al.. (2019). High-frequency variability of CO ₂ in Grand Passage, Bay of Fundy, Nova Scotia. Biogeosciences. 16(2). 605–616. 1 indexed citations

11.

Thomas, Helmuth, et al.. (2018). Hurricane Arthur and its effect on the short-term variability of p CO ₂ on the Scotian Shelf, NW Atlantic. Biogeosciences. 15(7). 2111–2123. 5 indexed citations

12.

Levasseur, Maurice, Martine Lizotte, Jean‐Éric Tremblay, et al.. (2017). Impact of ocean acidification on Arctic phytoplankton blooms and dimethyl sulfide concentration under simulated ice-free and under-ice conditions. Biogeosciences. 14(9). 2407–2427. 26 indexed citations

13.

Burt, William J., et al.. (2016). Inorganic carbon cycling and biogeochemical processes in an Arctic inlandsea (Hudson Bay). Biogeosciences. 13(16). 4659–4671. 19 indexed citations

14.

Geilfus, Nicolas‐Xavier, Jean‐Louis Tison, Gauthier Carnat, et al.. (2011). Inorganic carbon dynamics in coastal arctic sea ice and related air-ice CO2 exchanges. Open Repository and Bibliography (University of Liège). 1 indexed citations

15.

Shadwick, Elizabeth H., et al.. (2010). Air-Sea CO ₂ fluxes on the Scotian Shelf: seasonal to multi-annual variability. Biogeosciences. 7(11). 3851–3867. 50 indexed citations

16.

Thomas, Helmuth, Yann Bozec, Khalid Elkalay, et al.. (2005). Variability of the surface water partial pressure of CO ₂ in the North Sea. 2 indexed citations

17.

Thomas, Helmuth, Yann Bozec, Khalid Elkalay, et al.. (2005). Controls of the surface water partial pressure of CO ₂ in the North Sea. Biogeosciences. 2(4). 323–334. 71 indexed citations

18.

Thomas, Helmuth, Yann Bozec, H. J. W. de Baar, et al.. (2005). The carbon budget of the North Sea. Biogeosciences. 2(1). 87–96. 130 indexed citations

19.

Thomas, Helmuth. (2002). Remineralisation Ratios of Carbon, Nutrients and Oxygen In The North Atlantic Ocean - A Field Data Based Assessment. EGSGA. 922. 1 indexed citations

20.

Thomas, Helmuth, V. Ittekkot, Christoph Osterroht, & Bernd Schneider. (1999). Preferential recycling of nutrients—the ocean's way to increase new production and to pass nutrient limitation?. Limnology and Oceanography. 44(8). 1999–2004. 92 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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