Gregory J. Hakim

7.5k total citations · 3 hit papers
124 papers, 4.7k citations indexed

About

Gregory J. Hakim is a scholar working on Atmospheric Science, Global and Planetary Change and Oceanography. According to data from OpenAlex, Gregory J. Hakim has authored 124 papers receiving a total of 4.7k indexed citations (citations by other indexed papers that have themselves been cited), including 115 papers in Atmospheric Science, 102 papers in Global and Planetary Change and 20 papers in Oceanography. Recurrent topics in Gregory J. Hakim's work include Climate variability and models (95 papers), Meteorological Phenomena and Simulations (62 papers) and Geology and Paleoclimatology Research (33 papers). Gregory J. Hakim is often cited by papers focused on Climate variability and models (95 papers), Meteorological Phenomena and Simulations (62 papers) and Geology and Paleoclimatology Research (33 papers). Gregory J. Hakim collaborates with scholars based in United States, United Kingdom and China. Gregory J. Hakim's co-authors include Ryan D. Torn, Robert Tardif, Chris Snyder, Julien Emile‐Geay, Eric J. Steig, Jessica E. Tierney, Jonathan King, Jiang Zhu, Christopher J. Poulsen and Brian C. Ancell and has published in prestigious journals such as Nature, Proceedings of the National Academy of Sciences and Nature Communications.

In The Last Decade

Gregory J. Hakim

120 papers receiving 4.6k 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.

Globally resolved surface temperatures since the Last Glacial Maximum

2021 313 citations Matthew Osman, Jessica E. Tierney et al. Nature profile →
Glacial cooling and climate sensitivity revisited

2020 278 citations Jessica E. Tierney, Jiang Zhu et al. Nature profile →
Consistent multidecadal variability in global temperature reconstructions and simulations over the Common Era

2019 277 citations Raphael Neukom, Luis A. Barboza et al. Nature Geoscience profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Gregory J. Hakim United States	37	4.3k	3.4k	696	246	235	124	4.7k
Hans‐F. Graf Germany	41	4.3k 1.0×	4.2k 1.2×	575 0.8×	241 1.0×	199 0.8×	106	5.2k
Kwang‐Yul Kim South Korea	32	2.2k 0.5×	2.0k 0.6×	953 1.4×	251 1.0×	116 0.5×	99	2.9k
Rodrigo Caballero Sweden	36	3.3k 0.8×	2.7k 0.8×	645 0.9×	193 0.8×	69 0.3×	100	4.0k
Bruce P. Briegleb United States	31	4.3k 1.0×	3.9k 1.2×	1.2k 1.8×	165 0.7×	128 0.5×	38	5.1k
Christophe Genthon France	41	4.7k 1.1×	2.1k 0.6×	372 0.5×	739 3.0×	249 1.1×	115	5.3k
Thomas Laepple Germany	31	3.4k 0.8×	1.7k 0.5×	484 0.7×	584 2.4×	215 0.9×	86	3.9k
Tomonori Sato Japan	32	3.0k 0.7×	2.0k 0.6×	440 0.6×	296 1.2×	190 0.8×	118	3.7k
Yongyun Hu China	34	3.2k 0.7×	2.6k 0.8×	567 0.8×	146 0.6×	135 0.6×	184	4.0k
M. J. Rodwell United Kingdom	26	4.5k 1.0×	4.6k 1.3×	1.4k 2.0×	125 0.5×	187 0.8×	63	5.1k
Hubert Gallée France	40	4.8k 1.1×	2.4k 0.7×	360 0.5×	394 1.6×	172 0.7×	120	5.2k

Countries citing papers authored by Gregory J. Hakim

Since Specialization

Citations

This map shows the geographic impact of Gregory J. Hakim'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 Gregory J. Hakim with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Gregory J. Hakim more than expected).

Fields of papers citing papers by Gregory J. Hakim

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Gregory J. Hakim. 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 Gregory J. Hakim. The network helps show where Gregory J. Hakim may publish in the future.

Co-authorship network of co-authors of Gregory J. Hakim

This figure shows the co-authorship network connecting the top 25 collaborators of Gregory J. Hakim. A scholar is included among the top collaborators of Gregory J. Hakim 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 Gregory J. Hakim. Gregory J. Hakim 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

Hakim, Gregory J., et al.. (2025). Performance of the Pangu‐Weather Deep Learning Model in Forecasting Tornadic Environments. Geophysical Research Letters. 52(7).

Hakim, Gregory J., et al.. (2025). Coupled Seasonal Data Assimilation of Sea Ice, Ocean, and Atmospheric Dynamics over the Last Millennium. Journal of Climate. 38(23). 7229–7247.

Hakim, Gregory J., et al.. (2024). Predictability Limit of the 2021 Pacific Northwest Heatwave From Deep‐Learning Sensitivity Analysis. Geophysical Research Letters. 51(19). 9 indexed citations

Amin, Muhammad, et al.. (2024). Deteksi Spam Berbahasa Indonesia Berbasis Teks Menggunakan Model Bert. SHILAP Revista de lepidopterología. 11(6). 1291–1302.

Yang, Wenchang, Elizabeth Wallace, Gabriel A. Vecchi, et al.. (2024). Last millennium hurricane activity linked to endogenous climate variability. Nature Communications. 15(1). 816–816. 7 indexed citations

Hakim, Gregory J., et al.. (2024). Reconstructing the Tropical Pacific Upper Ocean Using Online Data Assimilation With a Deep Learning Model. Journal of Advances in Modeling Earth Systems. 16(11). e2024MS004422–e2024MS004422. 5 indexed citations

Holland, Paul R., et al.. (2023). Characteristics and rarity of the strong 1940s westerly wind event over the Amundsen Sea, West Antarctica. The cryosphere. 17(10). 4399–4420. 5 indexed citations

Zhu, Feng, Julien Emile‐Geay, Kevin J. Anchukaitis, et al.. (2022). A re-appraisal of the ENSO response to volcanism with paleoclimate data assimilation. Nature Communications. 13(1). 747–747. 33 indexed citations

Parsons, Luke, et al.. (2021). Do Multi‐Model Ensembles Improve Reconstruction Skill in Paleoclimate Data Assimilation?. Earth and Space Science. 8(4). 24 indexed citations

10.

Osman, Matthew, Jessica E. Tierney, Jiang Zhu, et al.. (2021). Globally resolved surface temperatures since the Last Glacial Maximum. Nature. 599(7884). 239–244. 313 indexed citations breakdown →

11.

Tardif, Robert, et al.. (2021). Assessing observation network design predictions for monitoring Antarctic surface temperature. Quarterly Journal of the Royal Meteorological Society. 148(743). 727–746. 7 indexed citations

12.

Zhu, Feng, Julien Emile‐Geay, Gregory J. Hakim, Jonathan King, & Kevin J. Anchukaitis. (2020). Resolving the Differences in the Simulated and Reconstructed Temperature Response to Volcanism. Geophysical Research Letters. 47(8). 43 indexed citations

13.

Erb, Michael P., Julien Emile‐Geay, Gregory J. Hakim, Nathan Steiger, & Eric J. Steig. (2020). Atmospheric dynamics drive most interannual U.S. droughts over the last millennium. Science Advances. 6(32). eaay7268–eaay7268. 20 indexed citations

14.

Briner, Jason P., Joshua Cuzzone, Nicolás E. Young, et al.. (2020). Rate of mass loss from the Greenland Ice Sheet will exceed Holocene values this century. Nature. 586(7827). 70–74. 68 indexed citations

15.

Neukom, Raphael, Luis A. Barboza, Michael P. Erb, et al.. (2019). Consistent multidecadal variability in global temperature reconstructions and simulations over the Common Era. Nature Geoscience. 12(8). 643–649. 277 indexed citations breakdown →

16.

Tardif, Robert, Gregory J. Hakim, W. A. Perkins, et al.. (2019). Last Millennium Reanalysis with an expanded proxy database and seasonal proxy modeling. Climate of the past. 15(4). 1251–1273. 157 indexed citations

17.

Steig, Eric J., et al.. (2018). The Holocene Thermal Maximum as an Analog for Future Warming: Insights from Paleoclimate Data Assimilation. AGU Fall Meeting Abstracts. 2018. 1 indexed citations

18.

Madaus, Luke & Gregory J. Hakim. (2017). Constraining Ensemble Forecasts of Discrete Convective Initiation with Surface Observations. Monthly Weather Review. 145(7). 2597–2610. 11 indexed citations

19.

Steiger, Nathan, Gregory J. Hakim, Eric J. Steig, David S. Battisti, & Gerard H. Roe. (2012). Climate Field Reconstruction via Data Assimilation. AGUFM. 2012. 2 indexed citations

20.

Hakim, Gregory J.. (1997). Extratropical cyclogenesis in terms of baroclinic vortex dynamics. PhDT. 1333. 3 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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