World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
49
Citations
7475
World Ranking
5338
National Ranking
238

Olivier Merlin 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 Olivier Merlin 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: 159 publications — 47th percentile

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

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

Olivier Merlin 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 Olivier Merlin 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

Olivier Merlin is affiliated with Paul Sabatier University in France. Their research focuses broadly on Environmental Science and Earth and Planetary Sciences, with particular work in subfields such as Environmental Engineering, Atmospheric Science, Global and Planetary Change, Soil Science, and Water Science and Technology.

Their publications cover a range of topics including Soil Moisture and Remote Sensing, Plant Water Relations and Carbon Dynamics, Precipitation Measurement and Analysis, Irrigation Practices and Water Management, Hydrology and Watershed Management Studies, Climate Change and Permafrost, and Soil and Unsaturated Flow.

Recent notable papers authored or co-authored by Olivier Merlin include:

  • Comprehensive analysis of alternative downscaled soil moisture products, 2020, Remote Sensing of Environment
  • Irrigation retrieval from Landsat optical/thermal data integrated into a crop water balance model: A case study over winter wheat fields in a semi-arid region, 2020, Remote Sensing of Environment
  • Performance of the HYDRUS-1D model for water balance components assessment of irrigated winter wheat under different water managements in semi-arid region of Morocco, 2020, Agricultural Water Management
  • The Soil Moisture Active Passive Experiments: Validation of the SMAP Products in Australia, 2020, IEEE Transactions on Geoscience and Remote Sensing
  • Machine-Learning-Based Downscaling of Hourly ERA5-Land Air Temperature over Mountainous Regions, 2023, Atmosphere

Olivier Merlin has collaborated frequently with several researchers, including Salah Er-Raki, Saïd Khabba, Vincent Rivalland, Abdelghani Chehbouni, and Maria-José Escorihuela.

Their work has been published repeatedly in venues such as Agricultural Water Management, Remote Sensing, SSRN Electronic Journal, Remote Sensing of Environment, and Hydrology and Earth System Sciences.

Best Publications

  • A review of spatial downscaling of satellite remotely sensed soil moisture

    Jian Peng;Alexander Loew;Alexander Loew;Olivier Merlin;Niko E. C. Verhoest

  • Towards deterministic downscaling of SMOS soil moisture using MODIS derived soil evaporative efficiency

    Olivier Merlin;Jeffrey P. Walker;Abdelghani Chehbouni;Yann Kerr

  • Evaluation of SMOS Soil Moisture Products Over Continental U.S. Using the SCAN/SNOTEL Network

    Ahmad Al Bitar;D. Leroux;Y. H. Kerr;O. Merlin

  • Disaggregation of SMOS Soil Moisture in Southeastern Australia

    O. Merlin;C. Rudiger;Ahmad Al Bitar;P. Richaume

  • Self-calibrated evaporation-based disaggregation of SMOS soil moisture: An evaluation study at 3 km and 100 m resolution in Catalunya, Spain

    Olivier Merlin;Maria José Escorihuela;Miquel Aran Mayoral;Olivier Hagolle

  • Disaggregation of MODIS surface temperature over an agricultural area using a time series of Formosat-2 images

    Olivier Merlin;Benoît Duchemin;Olivier Hagolle;Frédéric Jacob

  • An improved algorithm for disaggregating microwave-derived soil moisture based on red, near-infrared and thermal-infrared data

    Olivier Merlin;Ahmad Al Bitar;Jeffrey P. Walker;Yann Kerr

  • SMOS disaggregated soil moisture product at 1 km resolution: Processor overview and first validation results

    B. Molero;Olivier Merlin;Y. Malbeteau;A. Al Bitar

  • Retrieving surface soil moisture at high spatio-temporal resolution from a synergy between Sentinel-1 radar and Landsat thermal data: A study case over bare soil

    Abdelhakim Amazirh;Olivier Merlin;Salah Er-Raki;Qi Gao

  • An integrated modelling and remote sensing approach for hydrological study in arid and semi-arid regions: the SUDMED Programme

    A. Chehbouni;R. Escadafal;B. Duchemin;G. Boulet

  • A combined modeling and multispectral/multiresolution remote sensing approach for disaggregation of surface soil moisture: application to SMOS configuration

    O. Merlin;A.G. Chehbouni;Y.H. Kerr;E.G. Njoku

  • The NAFE'05/CoSMOS Data Set: Toward SMOS Soil Moisture Retrieval, Downscaling, and Assimilation

    R. Panciera;J.P. Walker;J.D. Kalma;E.J. Kim

  • Intercomparison of four remote-sensing-based energy balance methods to retrieve surface evapotranspiration and water stress of irrigated fields in semi-arid climate.

    J. Chirouze;G. Boulet;L. Jarlan;R. Fieuzal

  • Remote Sensing of Water Resources in Semi-Arid Mediterranean Areas: the joint international laboratory TREMA

    L. Jarlan;S. Khabba;S. Er-Raki;M. Le Page

  • Spatial Downscaling of SMAP Soil Moisture Using MODIS Land Surface Temperature and NDVI During SMAPVEX15

    Andreas Colliander;Joshua B. Fisher;Gregory Halverson;Olivier Merlin

  • A Simple Method to Disaggregate Passive Microwave-Based Soil Moisture

    O. Merlin;A. Chehbouni;J.P. Walker;R. Panciera

  • The NAFE'06 data set: towards soil moisture retrieval at intermediate resolution

    Olivier Merlin;Jeffrey P. Walker;Jetse D. Kalma;Edward J. Kim

  • Performance Metrics for Soil Moisture Downscaling Methods: Application to DISPATCH Data in Central Morocco

    Olivier Merlin;Yoann Malbéteau;Youness Notfi;Stefan Bacon

  • A downscaling method for distributing surface soil moisture within a microwave pixel: Application to the Monsoon '90 data

    O. Merlin;A. Chehbouni;Y.H. Kerr;D.C. Goodrich

  • An image-based four-source surface energy balance model to estimate crop evapotranspiration from solar reflectance/thermal emission data (SEB-4S)

    Olivier Merlin;Jonas Chirouze;Albert Olioso;Albert Olioso;Lionel Jarlan

  • Soil Texture Effects on Surface Resistance to Bare-Soil Evaporation

    Peter Lehmann;Olivier Merlin;Pierre Gentine;Dani Or

  • DisPATCh as a tool to evaluate coarse-scale remotely sensed soil moisture using localized in situ measurements: Application to SMOS and AMSR-E data in Southeastern Australia

    Yoann Malbéteau;Olivier Merlin;Beatriz Molero;Christoph Rüdiger

Frequent Co-Authors

Salah Er-Raki
Salah Er-Raki Cadi Ayyad University
Yann Kerr
Yann Kerr Federal University of Toulouse Midi-Pyrénées
Jeffrey P. Walker
Jeffrey P. Walker Monash University
Said Khabba
Said Khabba Cadi Ayyad University
Ahmad Al Bitar
Ahmad Al Bitar Federal University of Toulouse Midi-Pyrénées
Lionel Jarlan
Lionel Jarlan Institut de Recherche pour le Développement
Gilles Boulet
Gilles Boulet Institut de Recherche pour le Développement
Arnaud Mialon
Arnaud Mialon Centre national de la recherche scientifique, CNRS
Albert Olioso
Albert Olioso INRAE : Institut national de recherche pour l'agriculture, l'alimentation et l'environnement
Jetse D. Kalma
Jetse D. Kalma University of Newcastle Australia

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