Sumant Nigam

8.4k total citations · 1 hit paper
85 papers, 6.2k citations indexed

About

Sumant Nigam is a scholar working on Global and Planetary Change, Atmospheric Science and Oceanography. According to data from OpenAlex, Sumant Nigam has authored 85 papers receiving a total of 6.2k indexed citations (citations by other indexed papers that have themselves been cited), including 81 papers in Global and Planetary Change, 72 papers in Atmospheric Science and 41 papers in Oceanography. Recurrent topics in Sumant Nigam's work include Climate variability and models (80 papers), Meteorological Phenomena and Simulations (51 papers) and Oceanographic and Atmospheric Processes (38 papers). Sumant Nigam is often cited by papers focused on Climate variability and models (80 papers), Meteorological Phenomena and Simulations (51 papers) and Oceanographic and Atmospheric Processes (38 papers). Sumant Nigam collaborates with scholars based in United States, India and Norway. Sumant Nigam's co-authors include Richard S. Lindzen, Alfredo Ruiz‐Barradas, Ernesto Hugo Berbery, Mathew Barlow, Eric DeWeaver, Megan Linkin, Massimo Bollasina, James A. Carton, Bin Guan and Isaac M. Held and has published in prestigious journals such as Nature, Journal of Geophysical Research Atmospheres and Journal of Climate.

In The Last Decade

Sumant Nigam

84 papers receiving 6.0k 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.

On the Role of Sea Surface Temperature Gradients in Forcing Low-Level Winds and Convergence in the Tropics

1987 1.2k citations Richard S. Lindzen, Sumant Nigam Journal of the Atmospheric Sciences profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Sumant Nigam United States	43	5.7k	5.0k	2.6k	246	148	85	6.2k
Kaiming Hu China	34	5.5k 1.0×	4.8k 1.0×	3.2k 1.2×	155 0.6×	94 0.6×	106	6.1k
H. Annamalai United States	28	5.3k 0.9×	4.4k 0.9×	2.6k 1.0×	240 1.0×	313 2.1×	57	6.0k
Jeff Knight United Kingdom	38	6.3k 1.1×	5.8k 1.2×	2.0k 0.8×	291 1.2×	119 0.8×	82	7.1k
Xiouhua Fu United States	26	5.4k 0.9×	5.1k 1.0×	2.9k 1.1×	73 0.3×	73 0.5×	46	5.8k
Stephen Yeager United States	36	5.3k 0.9×	4.4k 0.9×	4.3k 1.6×	104 0.4×	60 0.4×	105	6.7k
Pedro DiNezio United States	30	2.7k 0.5×	2.5k 0.5×	1.4k 0.5×	110 0.4×	109 0.7×	53	3.5k
Shayne McGregor Australia	34	4.6k 0.8×	3.6k 0.7×	2.9k 1.1×	71 0.3×	59 0.4×	89	5.2k
Michael Vellinga United Kingdom	22	2.9k 0.5×	2.7k 0.5×	1.6k 0.6×	87 0.4×	97 0.7×	34	3.6k
Niklas Schneider United States	45	7.2k 1.2×	5.1k 1.0×	6.1k 2.3×	92 0.4×	107 0.7×	91	8.4k
Yukio Masumoto Japan	39	5.5k 1.0×	3.3k 0.6×	5.2k 2.0×	50 0.2×	76 0.5×	122	6.8k

Countries citing papers authored by Sumant Nigam

Since Specialization

Citations

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

Fields of papers citing papers by Sumant Nigam

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sumant Nigam. 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 Sumant Nigam. The network helps show where Sumant Nigam may publish in the future.

Co-authorship network of co-authors of Sumant Nigam

This figure shows the co-authorship network connecting the top 25 collaborators of Sumant Nigam. A scholar is included among the top collaborators of Sumant Nigam 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 Sumant Nigam. Sumant Nigam 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

Guan, Bin, et al.. (2023). Large‐Scale Circulation Context for North American West Coast Atmospheric Rivers: Influence of the Subseasonal NPO/WP Teleconnection. Journal of Geophysical Research Atmospheres. 128(17). 1 indexed citations

Sengupta, Agniv & Sumant Nigam. (2018). The Northeast Winter Monsoon over the Indian Subcontinent and Southeast Asia: Evolution, Interannual Variability, and Model Simulations. Journal of Climate. 32(1). 231–249. 28 indexed citations

Chafik, Léon, Sirpa Häkkinen, Matthew H. England, et al.. (2016). Global linkages originating from decadal oceanic variability in the subpolar North Atlantic. Geophysical Research Letters. 43(20). 29 indexed citations

Nigam, Sumant, et al.. (2014). The Indian Ocean Dipole: A Monopole in SST. Journal of Climate. 28(1). 3–19. 36 indexed citations

Ruiz‐Barradas, Alfredo, Sumant Nigam, & Argyro Kavvada. (2013). The Atlantic Multidecadal Oscillation in twentieth century climate simulations: uneven progress from CMIP3 to CMIP5. Climate Dynamics. 41(11-12). 3301–3315. 60 indexed citations

Ruiz‐Barradas, Alfredo & Sumant Nigam. (2012). Atmosphere–Land Surface Interactions over the Southern Great Plains: Characterization from Pentad Analysis of DOE ARM Field Observations and NARR. Journal of Climate. 26(3). 875–886. 32 indexed citations

Bollasina, Massimo & Sumant Nigam. (2010). The summertime “heat” low over Pakistan/northwestern India: evolution and origin. Climate Dynamics. 37(5-6). 957–970. 56 indexed citations

Chan, Steven & Sumant Nigam. (2008). Residual Diagnosis of Diabatic Heating from ERA-40 and NCEP Reanalyses: Intercomparisons with TRMM. Journal of Climate. 22(2). 414–428. 57 indexed citations

Rodríguez‐Puebla, C., R. T. Pinker, & Sumant Nigam. (2008). Relationship between downwelling surface shortwave radiative fluxes and sea surface temperature over the tropical Pacific: AMIP II models versus satellite estimates. Annales Geophysicae. 26(4). 785–794. 6 indexed citations

10.

Karnauskas, Kristopher B., Alfredo Ruiz‐Barradas, Sumant Nigam, & Antonio J. Busalacchi. (2008). North American Droughts in ERA-40 Global and NCEP North American Regional Reanalyses: A Palmer Drought Severity Index Perspective. Journal of Climate. 21(10). 2102–2123. 17 indexed citations

11.

Munoz, E., Antonio J. Busalacchi, Sumant Nigam, & Alfredo Ruiz‐Barradas. (2007). The Structure and Summer Intensification of the Caribbean Low-Level Jet. AGUSM. 2007.

12.

Munoz, E., Alfredo Ruiz‐Barradas, Sumant Nigam, & Antonio J. Busalacchi. (2006). Variability of the Caribbean Low-Level Jet and its Related Climate Anomalies. AGU Spring Meeting Abstracts. 2007. 1 indexed citations

13.

Ruiz‐Barradas, Alfredo & Sumant Nigam. (2005). Warm Season Rainfall Variability over the U.S. Great Plains in Observations, NCEP and ERA-40 Reanalyses, and NCAR and NASA Atmospheric Model Simulations. Journal of Climate. 18(11). 1808–1830. 113 indexed citations

14.

Ruiz‐Barradas, Alfredo, James A. Carton, & Sumant Nigam. (2002). Response of the Atmosphere to Climate Variability in the Tropical Atlantic. AGU Spring Meeting Abstracts. 2002. 1 indexed citations

15.

Nigam, Sumant & Eric DeWeaver. (2002). On The Linearity of Enso's Atmospheric Response. EGSGA. 6583. 3 indexed citations

16.

Ferreira, Rosana Nieto, Max J. Suárez, Sumant Nigam, & Franco Einaudi. (2001). Idealized Simulations of the Effects of Amazon Convection and Baroclinic Waves on the South Atlantic Convergence Zone. NASA Technical Reports Server (NASA). 1 indexed citations

17.

Ruiz‐Barradas, Alfredo, James A. Carton, & Sumant Nigam. (2000). Structure of Interannual-to-Decadal Climate Variability in the Tropical Atlantic Sector. Journal of Climate. 13(18). 3285–3297. 159 indexed citations

18.

Nigam, Sumant, Mathew Barlow, & Ernesto Hugo Berbery. (1999). Analysis links Pacific decadal variability to drought and streamflow in United States. Eos. 80(51). 621–625. 120 indexed citations

19.

Nigam, Sumant & Richard S. Lindzen. (1989). The Sensitivity of Stationary Waves to Variations in the Basic State Zonal Flow. Journal of the Atmospheric Sciences. 46(12). 1746–1768. 46 indexed citations

20.

Nigam, Sumant. (1984). On the structure and forcing of tropospheric stationary waves. PhDT. 6 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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