World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
49
Citations
10273
World Ranking
5187
National Ranking
1907

Sumant Nigam publication distribution in Environmental Sciences in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Environmental Sciences in 2026. The highlighted bar marks where Sumant Nigam sits on this spectrum.

41–50 publications: 21 scientists 51–60 publications: 62 scientists 61–70 publications: 133 scientists 71–80 publications: 257 scientists 81–90 publications: 361 scientists 91–100 publications: 440 scientists 101–110 publications: 492 scientists 111–120 publications: 541 scientists 121–130 publications: 617 scientists 131–140 publications: 544 scientists 141–150 publications: 541 scientists 151–160 publications: 539 scientists 161–170 publications: 444 scientists 171–180 publications: 444 scientists 181–190 publications: 400 scientists 191–200 publications: 377 scientists 201–210 publications: 318 scientists 211–220 publications: 283 scientists 221–230 publications: 263 scientists 231–240 publications: 220 scientists 241–250 publications: 217 scientists 251–260 publications: 180 scientists 261–270 publications: 181 scientists 271–280 publications: 155 scientists 281–290 publications: 130 scientists 291–300 publications: 127 scientists 301–310 publications: 130 scientists 311–320 publications: 85 scientists 321–330 publications: 106 scientists 331–340 publications: 80 scientists 341–350 publications: 83 scientists 351–360 publications: 75 scientists 361–370 publications: 69 scientists 371–380 publications: 52 scientists 381–390 publications: 54 scientists 391–400 publications: 56 scientists 401–410 publications: 44 scientists 411–420 publications: 40 scientists 421–430 publications: 36 scientists 431–440 publications: 25 scientists 441–450 publications: 25 scientists 451–460 publications: 32 scientists 461–470 publications: 29 scientists 471–480 publications: 21 scientists 481–490 publications: 26 scientists 491–500 publications: 25 scientists 501–510 publications: 17 scientists 511–520 publications: 18 scientists 521–530 publications: 15 scientists 531–540 publications: 22 scientists 541–550 publications: 12 scientists 551–560 publications: 15 scientists 561–570 publications: 11 scientists 571–580 publications: 19 scientists 581–590 publications: 9 scientists 591–600 publications: 9 scientists 601–610 publications: 7 scientists 611–620 publications: 11 scientists 621–630 publications: 5 scientists 631–640 publications: 5 scientists 641–650 publications: 6 scientists 651–660 publications: 3 scientists 661–670 publications: 3 scientists 671–680 publications: 4 scientists 681–686 publications: 3 scientists 687+ publications: 100 scientists
41 publications 687+

This scientist: 112 publications — 19th percentile

19% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 687 publications or more.

Sumant Nigam D-index placement in Environmental Sciences in 2026

The chart shows the D-index (discipline H-index) distribution of Environmental Sciences scientists ranked by Research.com in 2026. The highlighted bar marks where Sumant Nigam sits on this spectrum.

30 D-Index: 12 scientists 31 D-Index: 26 scientists 32 D-Index: 51 scientists 33 D-Index: 88 scientists 34 D-Index: 123 scientists 35 D-Index: 163 scientists 36 D-Index: 206 scientists 37 D-Index: 267 scientists 38 D-Index: 265 scientists 39 D-Index: 275 scientists 40 D-Index: 321 scientists 41 D-Index: 343 scientists 42 D-Index: 305 scientists 43 D-Index: 336 scientists 44 D-Index: 330 scientists 45 D-Index: 348 scientists 46 D-Index: 291 scientists 47 D-Index: 275 scientists 48 D-Index: 272 scientists 49 D-Index: 273 scientists 50 D-Index: 263 scientists 51 D-Index: 232 scientists 52 D-Index: 266 scientists 53 D-Index: 217 scientists 54 D-Index: 199 scientists 55 D-Index: 177 scientists 56 D-Index: 202 scientists 57 D-Index: 204 scientists 58 D-Index: 166 scientists 59 D-Index: 177 scientists 60 D-Index: 166 scientists 61 D-Index: 152 scientists 62 D-Index: 143 scientists 63 D-Index: 150 scientists 64 D-Index: 124 scientists 65 D-Index: 119 scientists 66 D-Index: 120 scientists 67 D-Index: 118 scientists 68 D-Index: 82 scientists 69 D-Index: 98 scientists 70 D-Index: 94 scientists 71 D-Index: 105 scientists 72 D-Index: 74 scientists 73 D-Index: 84 scientists 74 D-Index: 70 scientists 75 D-Index: 67 scientists 76 D-Index: 78 scientists 77 D-Index: 60 scientists 78 D-Index: 59 scientists 79 D-Index: 52 scientists 80 D-Index: 47 scientists 81 D-Index: 38 scientists 82 D-Index: 48 scientists 83 D-Index: 42 scientists 84 D-Index: 42 scientists 85 D-Index: 43 scientists 86 D-Index: 29 scientists 87 D-Index: 37 scientists 88 D-Index: 29 scientists 89 D-Index: 30 scientists 90 D-Index: 34 scientists 91 D-Index: 20 scientists 92 D-Index: 22 scientists 93 D-Index: 17 scientists 94 D-Index: 19 scientists 95 D-Index: 24 scientists 96 D-Index: 21 scientists 97 D-Index: 20 scientists 98 D-Index: 24 scientists 99 D-Index: 17 scientists 100 D-Index: 17 scientists 101 D-Index: 21 scientists 102 D-Index: 25 scientists 103 D-Index: 18 scientists 104 D-Index: 26 scientists 105 D-Index: 19 scientists 106 D-Index: 15 scientists 107 D-Index: 10 scientists 108 D-Index: 13 scientists 109 D-Index: 15 scientists 110 D-Index: 12 scientists 111 D-Index: 8 scientists 112 D-Index: 7 scientists 113 D-Index: 9 scientists 114 D-Index: 6 scientists 115 D-Index: 12 scientists 116 D-Index: 7 scientists 117 D-Index: 8 scientists 118 D-Index: 3 scientists 119 D-Index: 5 scientists 120 D-Index: 7 scientists 121 D-Index: 2 scientists 122 D-Index: 4 scientists 123 D-Index: 8 scientists 124 D-Index: 7 scientists 125+ D-Index: 99 scientists
30 D-Index 125+

This scientist: 49 D-Index — 47th percentile

47% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 125 D-Index or more.

Overview

Sumant Nigam is affiliated with the University of Maryland, College Park in the United States. Their research primarily spans the fields of Environmental Science and Earth and Planetary Sciences, with a focus on climate variability, meteorological phenomena, and oceanographic and atmospheric processes.

The scientist's work encompasses several subfields, including:

  • Global and Planetary Change
  • Atmospheric Science
  • Oceanography
  • Ocean Engineering
  • Water Science and Technology

Sumant Nigam's main topics of research include:

  • Climate variability and models
  • Meteorological Phenomena and Simulations
  • Oceanographic and Atmospheric Processes
  • Geophysics and Gravity Measurements
  • Water resources management and optimization
  • Hydrology and Drought Analysis
  • Flood Risk Assessment and Management

Their recent publications reflect a range of studies related to climate and atmospheric science:

  • "Atlantic-Pacific Links in Observed Multidecadal SST Variability: Is the Atlantic Multidecadal Oscillation's Phase Reversal Orchestrated by the Pacific Decadal Oscillation?" (2020, Journal of Climate)
  • "The Full Extent of El Niño's Precipitation Influence on the United States and the Americas: The Suboptimality of the Niño 3.4 SST Index" (2020, Geophysical Research Letters)
  • "Large-Scale Circulation Context for North American West Coast Atmospheric Rivers: Influence of the Subseasonal NPO/WP Teleconnection" (2023, Journal of Geophysical Research Atmospheres)
  • "The Chennai Water Crisis: Insufficient Rainwater or Suboptimal Harnessing of Runoff?" (2021, Current Science)
  • "Pacific-North American Teleconnection Tumbles Snowfall Records West of the Cascades during Christmas Week 2021" (2023, Bulletin of the American Meteorological Society)

Sumant Nigam frequently collaborates with several researchers. Notable coauthors include Alfredo Ruiz-Barradas, Agniv Sengupta, Bin Guan, Hồng Quân Nguyễn, and Justin Hicks.

Their research has been published in various scientific journals, some of the most common venues include:

  • Journal of Climate
  • Geophysical Research Letters
  • Journal of Geophysical Research Atmospheres
  • Current Science
  • Bulletin of the American Meteorological Society

Best Publications

  • On the role of sea surface temperature gradients in forcing low-level winds and convergence in the tropics

    Richard S. Lindzen;Sumant Nigam

  • ENSO, Pacific Decadal Variability, and U.S. Summertime Precipitation, Drought, and Stream Flow

    M. Barlow;S. Nigam;E. H. Berbery

  • The North Pacific Oscillation–West Pacific Teleconnection Pattern: Mature-Phase Structure and Winter Impacts

    Megan E. Linkin;Sumant Nigam

  • A U.S. CLIVAR Project to Assess and Compare the Responses of Global Climate Models to Drought-Related SST Forcing Patterns: Overview and Results

    Siegfried Schubert;David Gutzler;Hailan Wang;Hailan Wang;Aiguo Dai

  • Transients and the Extratropical Response to El Niño

    Isaac M. Held;Steven W. Lyons;Sumant Nigam

  • North American Climate in CMIP5 experiments. Part I: Evaluation of historical simulations of continental and regional climatology

    Justin Sheffield;Andrew P. Barrett;Brian Colle;D. Nelun Fernando;D. Nelun Fernando

  • Structure of Interannual-to-Decadal Climate Variability in the Tropical Atlantic Sector

    Alfredo Ruiz-Barradas;James A. Carton;Sumant Nigam

  • Evolution of the North American Monsoon System

    Mathew Barlow;Sumant Nigam;Ernesto H. Berbery

  • Winter and Summer Structure of the Caribbean Low-Level Jet

    Ernesto Muñoz;Antonio J. Busalacchi;Sumant Nigam;Alfredo Ruiz-Barradas

  • Variability of the Great Plains Low-Level Jet: Large Scale Circulation Context and Hydroclimate Impacts

    Unknown

  • Absorbing Aerosols and Summer Monsoon Evolution over South Asia: An Observational Portrayal

    Massimo Bollasina;Sumant Nigam;K. M. Lau

  • Key role of the Atlantic Multidecadal Oscillation in 20th century drought and wet periods over the Great Plains

    Sumant Nigam;Bin Guan;Alfredo Ruiz-Barradas

  • Twentieth-Century Climate Change over Africa: Seasonal Hydroclimate Trends and Sahara Desert Expansion

    Natalie Thomas;Sumant Nigam

  • Analysis Links Pacific Decadal Variability to Drought and Streamflow in United States

    Sumant Nigam;Mathew Barlow;Ernesto H. Berbery

  • ENSO Evolution and Teleconnections in IPCC’s Twentieth-Century Climate Simulations: Realistic Representation?

    Renu Joseph;Sumant Nigam

  • North American Climate in CMIP5 Experiments. Part II: Evaluation of Historical Simulations of Intraseasonal to Decadal Variability

    Justin Sheffield;Suzana J. Camargo;Rong Fu;Qi Hu

  • Warm Season Rainfall Variability over the U.S. Great Plains in Observations, NCEP and ERA-40 Reanalyses, and NCAR and NASA Atmospheric Model Simulations

    Alfredo Ruiz-Barradas;Sumant Nigam

  • On the dynamical basis for the Asian summer monsoon rainfall-El Niño relationship

    Sumant Nigam

  • The simulated Indian monsoon: A GCM sensitivity study

    M.J. Fennessy;J.L. Kinter;B. Kirtman;L. Marx

  • Structure of Oceanic and Atmospheric Low-Frequency Variability over the Tropical Pacific and Indian Oceans. Part I: COADS Observations

    Sumant Nigam;Horng-Syi Shen

  • Do Stationary Waves Drive the Zonal-Mean Jet Anomalies of the Northern Winter?

    Eric DeWeaver;Sumant Nigam

Frequent Co-Authors

James A. Carton
James A. Carton University of Maryland, College Park
Bin Guan
Bin Guan California Institute of Technology
Isaac M. Held
Isaac M. Held Princeton University
Mathew Barlow
Mathew Barlow University of Massachusetts Lowell
Rong Fu
Rong Fu University of California, Los Angeles
James L. Kinter
James L. Kinter George Mason University
Eric D. Maloney
Eric D. Maloney Colorado State University
Qi Hu
Qi Hu University of Nebraska–Lincoln
Justin Sheffield
Justin Sheffield University of Southampton
J. David Neelin
J. David Neelin University of California, Los Angeles

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