World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
77
Citations
20695
World Ranking
1142
National Ranking
494

Upmanu Lall 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 Upmanu Lall 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: 282 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: 26 scientists 501–510 publications: 17 scientists 511–520 publications: 19 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 681–689 publications: 4 scientists 690+ publications: 100 scientists
41 publications 690+

This scientist: 529 publications — 97th percentile

97% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 690 publications or more.

Upmanu Lall 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 Upmanu Lall 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: 198 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: 20 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: 9 scientists 126+ D-Index: 92 scientists
30 D-Index 126+

This scientist: 77 D-Index — 89th percentile

89% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 126 D-Index or more.

Research.com Recognitions

  • 2018 - Fellow of the American Association for the Advancement of Science (AAAS)
  • 2017 - Fellow of American Geophysical Union (AGU)

Overview

Upmanu Lall is affiliated with Columbia University in the United States and has made significant contributions within the field of Environmental Science. Their research primarily addresses issues related to climate variability, water resources, and hydrology.

Their work spans several main topics, including:

  • Climate variability and models
  • Flood Risk Assessment and Management
  • Hydrology and Drought Analysis
  • Hydrology and Watershed Management Studies
  • Meteorological Phenomena and Simulations
  • Water resources management and optimization
  • Tropical and Extratropical Cyclones Research

Lall's research is distributed across various subfields within Environmental Science, such as:

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

Their recent publications illustrate a focus on flooding, groundwater, and climatic events, including:

  • "Causes, impacts and patterns of disastrous river floods" (2021) published in Nature Reviews Earth & Environment
  • "A Snapshot of the World's Groundwater Challenges" (2020) published in Annual Review of Environment and Resources
  • "Groundwater depletion will reduce cropping intensity in India" (2021) published in Science Advances
  • "How unprecedented was the February 2021 Texas cold snap?" (2021) published in Environmental Research Letters
  • "Seven centuries of reconstructed Brahmaputra River discharge demonstrate underestimated high discharge and flood hazard frequency" (2020) published in Nature Communications

Lall collaborates frequently with several researchers, including:

  • Laureline Josset
  • Naresh Devineni
  • Tara J. Troy
  • Yash Amonkar
  • James Rising

Their research is often disseminated through a variety of publication venues, notably:

  • Zenodo (CERN European Organization for Nuclear Research)
  • Earth's Future
  • Water Resources Research
  • arXiv (Cornell University)
  • Nature Communications

In recognition of their work, Lall has been named a Fellow of the American Association for the Advancement of Science (AAAS) in 2018 and a Fellow of the American Geophysical Union (AGU) in 2017.

Best Publications

  • A Nearest Neighbor Bootstrap For Resampling Hydrologic Time Series

    Upmanu Lall;Ashish Sharma

  • Estimation of mutual information using kernel density estimators.

    Young-Il Moon;Balaji Rajagopalan;Upmanu Lall

  • Causes, impacts and patterns of disastrous river floods

    Bruno Merz;Günter Blöschl;Sergiy Vorogushyn;Francesco Dottori

  • A k‐nearest‐neighbor simulator for daily precipitation and other weather variables

    Balaji Rajagopalan;Upmanu Lall

  • Flood Risks and Impacts: A Case Study of Thailand’s Floods in 2011 and Research Questions for Supply Chain Decision Making

    Masahiko Haraguchi;Upmanu Lall

  • National trends in drinking water quality violations.

    Maura Allaire;Haowei Wu;Upmanu Lall

  • Floods and climate: emerging perspectives for flood risk assessment and management

    B. Merz;J. Aerts;K. Arnbjerg-Nielsen;M. Baldi

  • Streamflow simulation: A nonparametric approach

    Ashish Sharma;David G. Tarboton;Upmanu L. Lall

  • Floods in a changing climate: Does the past represent the future?

    Shaleen Jain;Upmanu Lall

  • Use of satellite imagery for water quality studies in New York Harbor

    F.L. Hellweger;P. Schlosser;P. Schlosser;U. Lall;U. Lall;J.K. Weissel

  • Water and economic development : The role of variability and a framework for resilience

    Casey Brown;Upmanu Lall

  • A rainwater harvesting system reliability model based on nonparametric stochastic rainfall generator.

    Matt Basinger;Franco Montalto;Upmanu Lall

  • Hydrology: The interdisciplinary science of water

    Richard M. Vogel;Richard M. Vogel;Upmanu Lall;Ximing Cai;Balaji Rajagopalan

  • Multi-variate flood damage assessment: a tree-based data-mining approach

    B. Merz;H. Kreibich;U. Lall

  • Depletion and response of deep groundwater to climate-induced pumping variability

    Tess A. Russo;Tess A. Russo;Upmanu Lall

  • A Snapshot of the World's Groundwater Challenges

    Upmanu Lall;Laureline Josset;Tess Russo;Tess Russo

  • Changing Frequency and Intensity of Rainfall Extremes over India from 1951 to 2003

    Chandra Kiran B. Krishnamurthy;Upmanu Lall;Hyun-Han Kwon

  • The future role of dams in the United States of America

    Michelle Ho;Upmanu Lall;Maura Allaire;Naresh Devineni

  • Spatiotemporal Variability of ENSO and SST Teleconnections to Summer Drought over the United States during the Twentieth Century

    Balaji Rajagopalan;Edward Cook;Upmanu Lall;Bonnie K. Ray

  • Seasonal to interannual ensemble streamflow forecasts for Ceara, Brazil: Applications of a multivariate, semiparametric algorithm

    Francisco Assis Souza Filho;Upmanu Lall

  • Categorical Climate Forecasts through Regularization and Optimal Combination of Multiple GCM Ensembles

    Balaji Rajagopalan;Upmanu Lall;Stephen E. Zebiak

  • Disaggregation Procedures for Stochastic Hydrology Based on Nonparametric Density Estimation

    David G. Tarboton;Ashish Sharma;Upmanu L. Lall

Frequent Co-Authors

Balaji Rajagopalan
Balaji Rajagopalan University of Colorado Boulder
David G. Tarboton
David G. Tarboton Utah State University
Edward R. Cook
Edward R. Cook Lamont-Doherty Earth Observatory
Andrew W. Robertson
Andrew W. Robertson Columbia University
Ashish Sharma
Ashish Sharma University of New South Wales
Alberto Viglione
Alberto Viglione Polytechnic University of Turin
Martyn P. Clark
Martyn P. Clark University of Saskatchewan
Bruno Merz
Bruno Merz University of Potsdam
András Bárdossy
András Bárdossy University of Stuttgart

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