World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
45
Citations
12551
World Ranking
6253
National Ranking
2256

Ali Omar 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 Ali Omar 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: 146 publications — 39th percentile

39% of scientists in this discipline score the same or lower.

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

Ali Omar 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 Ali Omar 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: 45 D-Index — 36th percentile

36% of scientists in this discipline score the same or lower.

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

Overview

Ali Omar is affiliated with the Langley Research Center in the United States. Their research focuses primarily on Environmental Science and Earth and Planetary Sciences, with significant contributions to both fields. The scientist's work includes extensive studies on atmospheric aerosols and clouds, atmospheric chemistry and aerosols, and atmospheric and environmental gas dynamics.

Their research spans several specialized topics, including:

  • Atmospheric aerosols and clouds
  • Atmospheric chemistry and aerosols
  • Atmospheric and environmental gas dynamics
  • Cryospheric studies and observations
  • Marine and coastal ecosystems
  • Atmospheric ozone and climate
  • Meteorological phenomena and simulations

The subfields of study addressed by Ali Omar encompass global and planetary change, atmospheric science, oceanography, environmental engineering, and earth-surface processes.

Frequent publication venues for this scientist include:

  • Frontiers in Remote Sensing
  • Remote Sensing
  • Earth and Space Science
  • Atmosphere
  • Journal of Quantitative Spectroscopy and Radiative Transfer

Ali Omar has collaborated extensively with co-authors such as Yongxiang Hu, Xiaomei Lu, Rosemary R. Baize, Mark Vaughan, and Brian Getzewich. These collaborations reflect a broad engagement with the scientific community in related research areas.

Notable recent papers by Ali Omar include:

  • "Antarctic spring ice-edge blooms observed from space by ICESat-2" (2020), published in Remote Sensing of Environment
  • "New Ocean Subsurface Optical Properties From Space Lidars: CALIOP/CALIPSO and ATLAS/ICESat-2" (2021), published in Earth and Space Science
  • "Enabling Value Added Scientific Applications of ICESat-2 Data With Effective Removal of Afterpulses" (2021), published in Earth and Space Science
  • "A Success Story in Controlling Sand and Dust Storms Hotspots in the Middle East" (2022), published in Atmosphere
  • "Assessing CALIOP-Derived Planetary Boundary Layer Height Using Ground-Based Lidar" (2021), published in Remote Sensing

Best Publications

  • Overview of the CALIPSO Mission and CALIOP Data Processing Algorithms

    David M. Winker;Mark A. Vaughan;Ali Omar;Yongxiang Hu

  • The CALIPSO Automated Aerosol Classification and Lidar Ratio Selection Algorithm

    Ali H. Omar;David M. Winker;Mark A. Vaughan;Yongxiang Hu

  • The CALIPSO Lidar Cloud and Aerosol Discrimination: Version 2 Algorithm and Initial Assessment of Performance

    Zhaoyan Liu;Mark Vaughan;David Winker;Chieko Kittaka

  • The CALIPSO Version 4 Automated Aerosol Classification and Lidar Ratio Selection Algorithm

    Man-Hae Kim;Ali H. Omar;Jason L. Tackett;Mark A. Vaughan

  • Fully automated analysis of space-based lidar data: an overview of the CALIPSO retrieval algorithms and data products

    Mark A. Vaughan;Stuart A. Young;David M. Winker;Kathleen A. Powell

  • Development of global aerosol models using cluster analysis of Aerosol Robotic Network (AERONET) measurements

    Ali H. Omar;Jae-Gwang Won;David M. Winker;Soon-Chang Yoon

  • The fertilizing role of African dust in the Amazon rainforest: A first multiyear assessment based on data from Cloud‐Aerosol Lidar and Infrared Pathfinder Satellite Observations

    Hongbin Yu;Hongbin Yu;Mian Chin;Tianle Yuan;Tianle Yuan;Huisheng Bian;Huisheng Bian

  • CALIPSO/CALIOP Cloud Phase Discrimination Algorithm

    Yongxiang Hu;David Winker;Mark Vaughan;Bing Lin

  • CALIPSO lidar observations of the optical properties of Saharan dust: A case study of long‐range transport

    Zhaoyan Liu;Ali Omar;Mark Vaughan;Johnathan Hair

  • Global view of aerosol vertical distributions from CALIPSO lidar measurements and GOCART simulations: Regional and seasonal variations

    Hongbin Yu;Hongbin Yu;Hongbin Yu;Mian Chin;David M. Winker;Ali H. Omar

  • Aerosol classification from airborne HSRL and comparisons with the CALIPSO vertical feature mask

    S. P. Burton;R. A. Ferrare;M. A. Vaughan;A. H. Omar

  • Quantification of Trans-Atlantic Dust Transport from Seven-year (2007-2013) Record of CALIPSO Lidar Measurements

    Hongbin Yu;Hongbin Yu;Mian Chin;Huisheng Bian;Huisheng Bian;Tianle Yuan;Tianle Yuan

  • CALIOP and AERONET aerosol optical depth comparisons: One size fits none

    A. H. Omar;D. M. Winker;J. L. Tackett;D. M. Giles

  • Atmospheric Correction of Satellite Ocean-Color Imagery During the PACE Era.

    Robert J. Frouin;Bryan A. Franz;Amir Ibrahim;Kirk Knobelspiesse

  • Discriminating between clouds and aerosols in the CALIOP version 4.1 data products

    Zhaoyan Liu;Jayanta Kar;Shan Zeng;Jason Tackett

  • Intercomparison of column aerosol optical depths from CALIPSO and MODIS-Aqua

    C. Kittaka;D. M. Winker;M. A. Vaughan;A. Omar

  • Sea surface wind speed estimation from space-based lidar measurements

    Y. Hu;K. Stamnes;M. Vaughan;Jacques Pelon

  • Contrasting effects on deep convective clouds by different types of aerosols

    Jonathan H. Jiang;Hui Su;Lei Huang;Lei Huang;Yuan Wang

  • Estimates of African Dust Deposition Along the Trans‐Atlantic Transit Using the Decadelong Record of Aerosol Measurements from CALIOP, MODIS, MISR, and IASI

    Hongbin Yu;Qian Tan;Mian Chin;Lorraine A. Remer

  • CALIPSO lidar calibration at 532 nm: version 4 nighttime algorithm

    Jayanta Kar;Mark A. Vaughan;Kam-Pui Lee;Jason L. Tackett

  • Development of global aerosol models using cluster analysis of Aerosol Robotic Network (AERONET) measurements : Global aerosol system

    Ali H. Omar;Jae-Gwang Won;David M. Winker;Soon-Chang Yoon

Frequent Co-Authors

Mark A. Vaughan
Mark A. Vaughan Langley Research Center
Zhaoyan Liu
Zhaoyan Liu Langley Research Center
David M. Winker
David M. Winker Langley Research Center
Yongxiang Hu
Yongxiang Hu Langley Research Center
Charles R. Trepte
Charles R. Trepte Langley Research Center
Hongbin Yu
Hongbin Yu Goddard Space Flight Center
Chris A. Hostetler
Chris A. Hostetler Langley Research Center
Melody A. Avery
Melody A. Avery Langley Research Center
Jacques Pelon
Jacques Pelon Université Paris Cité
Lorraine A. Remer
Lorraine A. Remer University of Maryland, Baltimore County

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