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D-Index & Metrics

Environmental Sciences

D-Index
63
Citations
21874
World Ranking
2412
National Ranking
973

Eni G. Njoku 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 Eni G. Njoku 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: 243 publications — 76th percentile

76% of scientists in this discipline score the same or lower.

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

Eni G. Njoku 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 Eni G. Njoku 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: 63 D-Index — 75th percentile

75% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 1995 - IEEE Fellow For contributions to the development of spaceborne microwave radiometry for remote sensing of the Earth.

Overview

Eni G. Njoku is affiliated with the Jet Propulsion Lab in the United States. Their research spans several areas within the social sciences and the arts and humanities, with a focus on political dynamics and conflicts.

The main fields of study covered by Njoku include:

  • Social Sciences
  • Arts and Humanities

The subfields of specialty are:

  • History
  • Sociology and Political Science
  • Political Science and International Relations

Njoku's work addresses key topics such as:

  • Historical and Contemporary Political Dynamics
  • Political Conflict and Governance
  • Politics and Conflicts in Afghanistan, Pakistan, and Middle East

Recent publications include the paper titled Social Movements and National Security in Nigeria: A Study of the Indigenous People of Biafra (IPOB), published in 2024 in the African Quarterly Social Science Review. This paper contributes to the discourse on political conflict and governance in Nigeria.

Frequent collaborators in Njoku's research include Christopher I. Obiukwu, with whom they have coauthored publications.

Njoku has contributed to academic venues such as:

  • African Quarterly Social Science Review

Among awards received, Njoku was named an IEEE Fellow in 1995 for contributions to spaceborne microwave radiometry development for Earth remote sensing.

Best Publications

  • The Soil Moisture Active Passive (SMAP) Mission

    Dara Entekhabi;Eni G Njoku;Peggy E O'Neill;Kent H Kellogg

  • Soil moisture retrieval from AMSR-E

    E.G. Njoku;T.J. Jackson;V. Lakshmi;T.K. Chan

  • Passive microwave remote sensing of soil moisture

    Eni G. Njoku;Dara Entekhabi

  • Validation of SMAP surface soil moisture products with core validation sites

    A. Colliander;T.J. Jackson;R. Bindlish;S. Chan

  • Retrieval of land surface parameters using passive microwave measurements at 6-18 GHz

    E.G. Njoku;Li Li

  • Assessment of the SMAP Passive Soil Moisture Product

    Steven K. Chan;Rajat Bindlish;Peggy E. O'Neill;Eni Njoku

  • State of the Art in Large‐Scale Soil Moisture Monitoring

    Tyson E. Ochsner;Michael Harold Cosh;Richard H. Cuenca;Wouter Dorigo

  • Comparison and assimilation of global soil moisture retrievals from the Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR‐E) and the Scanning Multichannel Microwave Radiometer (SMMR)

    Rolf H. Reichle;Rolf H. Reichle;Randal D. Koster;Ping Liu;Ping Liu;Sarith P. P. Mahanama;Sarith P. P. Mahanama

  • Development and assessment of the SMAP enhanced passive soil moisture product

    S. K. Chan;R. Bindlish;P. O'Neill;T. Jackson

  • Assimilation of remotely sensed soil moisture and vegetation with a crop simulation model for maize yield prediction

    Amor Valeriano M. Ines;Narendra N. Das;James W. Hansen;Eni G. Njoku

  • Theory for passive microwave remote sensing of near‐surface soil moisture

    Eni G. Njoku;Jin-Au Kong

  • Solving the inverse problem for soil moisture and temperature profiles by sequential assimilation of multifrequency remotely sensed observations

    D. Entekhabi;H. Nakamura;E.G. Njoku

  • Global survey and statistics of radio-frequency interference in AMSR-E land observations

    E.G. Njoku;P. Ashcroft;T.K. Chan;Li Li

  • An Algorithm for Merging SMAP Radiometer and Radar Data for High-Resolution Soil-Moisture Retrieval

    N N Das;D Entekhabi;E G Njoku

  • A semiempirical model for interpreting microwave emission from semiarid land surfaces as seen from space

    Y.H. Kerr;E.G. Njoku

  • Vegetation and surface roughness effects on AMSR-E land observations

    Eni G. Njoku;Steven K. Chan

  • Observations of soil moisture using a passive and active low-frequency microwave airborne sensor during SGP99

    E.G. Njoku;W.J. Wilson;S.H. Yueh;S.J. Dinardo

  • The Soil Moisture Active Passive Validation Experiment 2012 (SMAPVEX12): Prelaunch Calibration and Validation of the SMAP Soil Moisture Algorithms

    Heather McNairn;Thomas J. Jackson;Grant Wiseman;Stephane Belair

  • A preliminary survey of radio-frequency interference over the U.S. in Aqua AMSR-E data

    Li Li;E.G. Njoku;E. Im;P.S. Chang

  • The hydrosphere State (hydros) Satellite mission: an Earth system pathfinder for global mapping of soil moisture and land freeze/thaw

    D. Entekhabi;E.G. Njoku;P. Houser;M. Spencer

Frequent Co-Authors

Peggy E. O'Neill
Peggy E. O'Neill Goddard Space Flight Center
Thomas J. Jackson
Thomas J. Jackson Agricultural Research Service
Andreas Colliander
Andreas Colliander California Institute of Technology
Simon Yueh
Simon Yueh Jet Propulsion Lab
Rajat Bindlish
Rajat Bindlish Goddard Space Flight Center
Michael H. Cosh
Michael H. Cosh Agricultural Research Service
Leung Tsang
Leung Tsang University of Michigan–Ann Arbor
John S. Kimball
John S. Kimball University of Montana
Jiancheng Shi
Jiancheng Shi Chinese Academy of Sciences

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Related Online Degrees & Career Pathways

Pursuing a degree in Environmental Sciences opens doors to a variety of related fields that complement this area of study. For professionals interested in public administration and policy roles, online MPA degrees offer a focused curriculum that enhances leadership skills in environmental management and sustainability initiatives.

Those passionate about social dynamics and human behavior within environmental contexts may find value in exploring online bachelors degree programs in sociology. These programs provide insights into societal impacts on natural resources and community-based conservation efforts.

For educators or professionals aiming to advance in academia or educational leadership, advancing through online EdD programs no dissertation can offer a practical route without the traditional dissertation requirement, focusing on applied research relevant to environmental education.

Additionally, many institutions provide smooth transitions from master's to doctoral levels through online EdS to EdD programs. These pathways are ideal for those committed to long-term leadership and innovation within environmental science education and policy.

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