World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
49
Citations
7281
World Ranking
5351
National Ranking
1957

Ann L. Sprague 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 Ann L. Sprague 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: 244 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.

Ann L. Sprague 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 Ann L. Sprague 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

Ann L. Sprague is affiliated with the University of Arizona in the United States. Their research primarily spans the field of Medicine, with focused contributions in the subfields of Pediatrics, Perinatology and Child Health, as well as Obstetrics and Gynecology.

Sprague's work centers on topics related to Maternal and Perinatal Health Interventions, Global Maternal and Child Health, and Maternal and Fetal Healthcare. These topics reflect a concentrated effort on both intervention strategies and broader global health outcomes concerning mothers and children.

Their recent publication includes the paper titled Survey of Mode of Delivery and Maternal and Perinatal Outcomes in Canada, published in 2022 in the Journal of Obstetrics and Gynaecology Canada.

Frequent collaborators in Sprague's research include:

  • Rebecca Attenborough
  • Phil Murphy
  • Jie Yang
  • B. Anthony Armson
  • George Carson

Sprague has contributed to academic venues such as the Journal of Obstetrics and Gynaecology Canada.

Best Publications

  • The Major-Element Composition of Mercury’s Surface from MESSENGER X-ray Spectrometry

    Larry R. Nittler;Richard D. Starr;Shoshana Z. Weider;Timothy J. McCoy

  • Concentration of H, Si, Cl, K, Fe, and Th in the low- and mid-latitude regions of Mars

    W. V. Boynton;G. J. Taylor;L. G. Evans;R. C. Reedy

  • Radioactive Elements on Mercury’s Surface from MESSENGER: Implications for the Planet’s Formation and Evolution

    Patrick N. Peplowski;Larry G. Evans;Steven A. Hauck;Timothy J. McCoy

  • Major-Element Abundances on the Surface of Mercury: Results from the MESSENGER Gamma-Ray Spectrometer

    Larry G. Evans;Patrick N. Peplowski;Edgar A. Rhodes;David J. Lawrence

  • Sulfur at Mercury, Elemental at the Poles and Sulfides in the Regolith

    Ann L. Sprague;Donald M. Hunten;Katharina Lodders

  • Processes that Promote and Deplete the Exosphere of Mercury

    Rosemary Killen;Gabrielle Cremonese;Helmut Lammer;Stefano Orsini

  • Mercury's Weather-Beaten Surface: Understanding Mercury in the Context of Lunar and Asteroidal Space Weathering Studies

    Deborah L. Domingue;Clark R. Chapman;Rosemary M. Killen;Thomas H. Zurbuchen

  • Bulk composition and early differentiation of Mars

    G. Jeffrey Taylor;William V. Boynton;J. Brückner;H. Wänke

  • Equatorial and midlatitude distribution of chlorine measured by Mars Odyssey GRS

    J. M. Keller;W. V. Boynton;S. Karunatillake;V. R. Baker

  • The redox state, FeO content, and origin of sulfur‐rich magmas on Mercury

    Mikhail Yu. Zolotov;Ann L. Sprague;Steven A. Hauck;Larry R. Nittler

  • MESSENGER Observations of the Composition of Mercury's Ionized Exosphere and Plasma Environment

    Thomas H. Zurbuchen;Jim M. Raines;George Gloeckler;Stamatios M. Krimigis;Stamatios M. Krimigis

  • Mercury: Evidence for Anorthosite and Basalt from Mid-infrared (7.3-13.5 μm) Spectroscopy

    A.L. Sprague;R.W.H. Kozlowski;F.C. Witteborn;D.P. Cruikshank

  • Mercury: Mid‐infrared (3–13.5 μm) observations show heterogeneous composition, presence of intermediate and basic soil types, and pyroxene

    A. L. Sprague;A. L. Sprague;J. P. Emery;K. L. Donaldson;R. W. Russell;R. W. Russell

  • The sodium and potassium atmosphere of the moon and its interaction with the surface

    A.L. Sprague;R.W.H. Kozlowski;D.M. Hunten;W.K. Wells

  • MESSENGER Observations of Mercury’s Exosphere: Detection of Magnesium and Distribution of Constituents

    William E. McClintock;Ronald J. Vervack;E. Todd Bradley;Rosemary M. Killen

  • Variations in the abundances of potassium and thorium on the surface of Mercury: Results from the MESSENGER Gamma-Ray Spectrometer

    Patrick N. Peplowski;David J. Lawrence;Edgar A. Rhodes;Ann L. Sprague

  • Spectroscopic Observations of Mercury's Surface Reflectance During MESSENGER's First Mercury Flyby

    William E. McClintock;Noam R. Izenberg;Gregory M. Holsclaw;David T. Blewett

  • Mars' south polar Ar enhancement: a tracer for south polar seasonal meridional mixing.

    A. L. Sprague;W. V. Boynton;K. E. Kerry;D. M. Janes

  • Evidence for a basalt-free surface on Mercury and implications for internal heat.

    R Jeanloz;DL Mitchell;AL Sprague;I de Pater

  • Mercury: Thermal Modeling and Mid-infrared (5–12 μm) Observations☆

    J.P. Emery;A.L. Sprague;F.C. Witteborn;J.E. Colwell

  • Mercury's Exosphere: Observations During MESSENGER's First Mercury Flyby

    William E. McClintock;E. Todd Bradley;Ronald J. Vervack;Rosemary M. Killen

  • Major-element composition of Mercury's surface from MESSENGER X-ray Spectrometry

    S. Z. Weider;L. R. Nittler;R. D. Starr;T. J. McCoy

Frequent Co-Authors

Sean C. Solomon
Sean C. Solomon Lamont-Doherty Earth Observatory
William E. McClintock
William E. McClintock University of Colorado Boulder
Noam R. Izenberg
Noam R. Izenberg Johns Hopkins University Applied Physics Laboratory
Donald M. Hunten
Donald M. Hunten University of Arizona
William V. Boynton
William V. Boynton University of Arizona
James W. Head
James W. Head Brown University
David T. Blewett
David T. Blewett Johns Hopkins University Applied Physics Laboratory
Timothy J. McCoy
Timothy J. McCoy National Museum of Natural History
David J. Lawrence
David J. Lawrence Johns Hopkins University Applied Physics Laboratory
Scott L. Murchie
Scott L. Murchie Johns Hopkins University Applied Physics Laboratory

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Related Online Degrees & Career Pathways

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Lastly, understanding human and social dynamics is crucial when addressing environmental challenges. A sociology bachelor degree online offers insight into societal impacts and behaviors, aiding professionals aiming to promote sustainable practices and community engagement.

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