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Oliver Sonnentag

Oliver Sonnentag

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Environmental Sciences
Canada
2023

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 67 1983 1891 72 66 210 16157
Biology and Biochemistry 64 9611 8871 328 298 185 15493

Oliver Sonnentag publications per year

The chart shows the history of publications by Oliver Sonnentag between 2006 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Oliver Sonnentag published across 20 years, from 2006 to 2025, averaging 14.4 papers a year. Output peaked at 33 publications in 2022. 49 of the 288 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 2006 to 2025. Vertical axis: number of publications, 0 to 33. Peak 33 publications in 2022. 2006: 1 publication 2007: 3 publications 2008: 7 publications 2009: 10 publications 2010: 7 publications 2011: 10 publications 2012: 10 publications 2013: 9 publications 2014: 10 publications 2015: 9 publications 2016: 15 publications 2017: 10 publications 2018: 19 publications 2019: 16 publications 2020: 23 publications 2021: 23 publications 2022: 33 publications 2023: 24 publications 2024: 25 publications 2025: 24 publications
2006 2025

288 publications in total across all disciplines

View publications per year as a table
Oliver Sonnentag: publications per year, 2006 to 2025
Year Publications
2006 1
2007 3
2008 7
2009 10
2010 7
2011 10
2012 10
2013 9
2014 10
2015 9
2016 15
2017 10
2018 19
2019 16
2020 23
2021 23
2022 33
2023 24
2024 25
2025 24
Total 288
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Oliver Sonnentag publications per year - data summary

  • Oliver Sonnentag, a Environmental Sciences scholar from University of Montreal, has 288 publications recorded across 20 years, from 2006 to 2025.
  • The oldest publication on record dates to 2006 and the most recent to 2025.
  • The most productive year is 2022, with 33 publications.
  • The least productive year with any output is 2006, with 1 publication.
  • The rate of publication averages 14.4 papers per year over the whole span, or 14.4 per year counting only the 20 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 129 publications, 45% of the career total.
  • Split into equal eras - 2006-2012: 48 publications (6.9 per year); 2013-2019: 88 publications (12.6 per year); 2020-2025: 152 publications (25.3 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Oliver Sonnentag 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 Oliver Sonnentag sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 66 bars. Horizontal axis: publications, 41–50 to 690+. Vertical axis: number of scientists, 0 to 617. Most scientists, 617, have 121–130 publications. The last bar groups every scientist with 690 publications or more. The highlighted bar, 201–210 publications, is where this scientist sits. 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
41–50 publications 690+

This scientist: 210 publications — 67th percentile

67% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Environmental Sciences scientists by publication count, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
Publications Scientists This scientist
41–50 21
51–60 62
61–70 133
71–80 257
81–90 361
91–100 440
101–110 492
111–120 541
121–130 617
131–140 544
141–150 541
151–160 539
161–170 444
171–180 444
181–190 400
191–200 377
201–210 318 210
211–220 282
221–230 263
231–240 220
241–250 217
251–260 180
261–270 181
271–280 155
281–290 130
291–300 127
301–310 130
311–320 85
321–330 106
331–340 80
341–350 83
351–360 75
361–370 69
371–380 52
381–390 54
391–400 56
401–410 44
411–420 40
421–430 36
431–440 25
441–450 25
451–460 32
461–470 29
471–480 21
481–490 26
491–500 26
501–510 17
511–520 19
521–530 15
531–540 22
541–550 12
551–560 15
561–570 11
571–580 19
581–590 9
591–600 9
601–610 7
611–620 11
621–630 5
631–640 5
641–650 6
651–660 3
661–670 3
671–680 4
681–689 4
690+ 100
Download as CSV

Oliver Sonnentag publication distribution in Environmental Sciences in 2026 - data summary

  • The chart plots the publication count of all 9,676 Environmental Sciences scientists ranked by Research.com in 2026, grouped into 66 ranges running from 41–50 to 690+ publications.
  • Oliver Sonnentag, a Environmental Sciences scholar from University of Montreal, records 210 publications - the 67th percentile of the discipline.
  • 67% of ranked Environmental Sciences scientists score the same or lower than Oliver Sonnentag, and about 33% score higher.
  • The median of the discipline falls in the 161–170 publications range, and Oliver Sonnentag ranks above the median.
  • The most crowded range is 121–130 publications, holding 617 scientists (6% of the field).
  • 67% of the field sits in the lowest quarter of the value range (up to 201–210 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 690 publications or more, 100 scientists in all (1% of the field).

Oliver Sonnentag 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 Oliver Sonnentag sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 97 bars. Horizontal axis: D-Index, 30 to 126+. Vertical axis: number of scientists, 0 to 348. Most scientists, 348, have 45 D-Index. The last bar groups every scientist with 126 D-Index or more. The highlighted bar, 67 D-Index, is where this scientist sits. 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: 67 D-Index — 80th percentile

80% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Environmental Sciences scientists by D-index, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
D-Index Scientists This scientist
30 12
31 26
32 51
33 88
34 123
35 163
36 206
37 267
38 265
39 275
40 321
41 343
42 305
43 336
44 330
45 348
46 291
47 275
48 272
49 273
50 263
51 232
52 266
53 217
54 198
55 177
56 202
57 204
58 166
59 177
60 166
61 152
62 143
63 150
64 124
65 119
66 120
67 118 67
68 82
69 98
70 94
71 105
72 74
73 84
74 70
75 67
76 78
77 60
78 59
79 52
80 47
81 38
82 48
83 42
84 42
85 43
86 29
87 37
88 29
89 30
90 34
91 20
92 22
93 17
94 19
95 24
96 21
97 20
98 24
99 17
100 17
101 21
102 25
103 18
104 26
105 20
106 15
107 10
108 13
109 15
110 12
111 8
112 7
113 9
114 6
115 12
116 7
117 8
118 3
119 5
120 7
121 2
122 4
123 8
124 7
125 9
126+ 92
Download as CSV

Oliver Sonnentag D-index placement in Environmental Sciences in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 9,676 Environmental Sciences scientists ranked by Research.com in 2026, grouped into 97 ranges running from 30 to 126+ D-Index.
  • Oliver Sonnentag, a Environmental Sciences scholar from University of Montreal, records 67 D-Index - the 80th percentile of the discipline.
  • 80% of ranked Environmental Sciences scientists score the same or lower than Oliver Sonnentag, and about 20% score higher.
  • The median of the discipline falls in the 51 D-Index range, and Oliver Sonnentag ranks above the median.
  • The most crowded range is 45 D-Index, holding 348 scientists (4% of the field).
  • 59% of the field sits in the lowest quarter of the value range (up to 54 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 126 D-Index or more, 92 scientists in all (<1% of the field).

Research.com Recognitions

  • 2023 - Research.com Environmental Sciences in Canada Leader Award

Overview

Oliver Sonnentag is affiliated with the University of Montreal in Canada and has an extensive research portfolio centered around environmental science and earth and planetary sciences. Their work predominantly covers atmospheric science, global and planetary change, and ecology, with narrower focuses including environmental chemistry and environmental engineering.

Their research topics encompass:

  • Climate change and permafrost
  • Atmospheric and environmental gas dynamics
  • Cryospheric studies and observations
  • Peatlands and wetlands ecology
  • Plant water relations and carbon dynamics
  • Geology and paleoclimatology research
  • Fire effects on ecosystems

Oliver Sonnentag's recent publications include the following papers:

  • "Representativeness of Eddy-Covariance flux footprints for areas surrounding AmeriFlux sites" (2021), published in Agricultural and Forest Meteorology
  • "Expert assessment of future vulnerability of the global peatland carbon sink" (2020), published in Nature Climate Change
  • "Increasing contribution of peatlands to boreal evapotranspiration in a warming climate" (2020), published in Nature Climate Change
  • "Statistical upscaling of ecosystem CO2 fluxes across the terrestrial tundra and boreal domain: Regional patterns and uncertainties" (2021), published in Global Change Biology
  • "FLUXNET-CH 4: a global, multi-ecosystem dataset and analysis of methane seasonality from freshwater wetlands" (2021), published in Earth System Science Data

Frequent co-authors in their work include:

  • E. S. Euskirchen
  • Masahito Ueyama
  • Manuel Helbig
  • Matthias Peichl
  • Ivan Mammarella

Oliver Sonnentag has published numerous articles in key scientific venues, with multiple papers appearing in:

  • Zenodo (CERN European Organization for Nuclear Research)
  • Environmental Research Letters
  • Nature Climate Change
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)
  • Agricultural and Forest Meteorology

Best Publications

  • Climate change, phenology, and phenological control of vegetation feedbacks to the climate system

    Andrew D. Richardson;Trevor F. Keenan;Mirco Migliavacca;Youngryel Ryu;Youngryel Ryu

  • Digital repeat photography for phenological research in forest ecosystems

    Oliver Sonnentag;Oliver Sonnentag;Koen Hufkens;Cory Teshera-Sterne;Adam M. Young

  • Representativeness of Eddy-Covariance flux footprints for areas surrounding AmeriFlux sites

    Housen Chu;Xiangzhong Luo;Xiangzhong Luo;Zutao Ouyang;W. Stephen Chan

  • Evaluating remote sensing of deciduous forest phenology at multiple spatial scales using PhenoCam imagery

    Stephen Klosterman;Koen Hufkens;Koen Hufkens;J. M. Gray;E. Melaas

  • Expert assessment of future vulnerability of the global peatland carbon sink

    J. Loisel;A. V. Gallego-Sala;Matthew J. Amesbury;Matthew J. Amesbury;G. Magnan

  • Large loss of CO2 in winter observed across the northern permafrost region

    Susan M. Natali;Jennifer D. Watts;Brendan M. Rogers;Stefano Potter

  • Leaf area index measurements at Fluxnet-Canada forest sites

    Jing M. Chen;Ajit Govind;Oliver Sonnentag;Yongqin Zhang

  • How to quantify tree leaf area index in an open savanna ecosystem: A multi-instrument and multi-model approach

    Youngryel Ryu;Oliver Sonnentag;Tiit Nilson;Rodrigo Vargas

  • Linking near-surface and satellite remote sensing measurements of deciduous broadleaf forest phenology

    Koen Hufkens;Mark Friedl;Oliver Sonnentag;Bobby H. Braswell

  • Ecological impacts of a widespread frost event following early spring leaf-out

    Koen Hufkens;Mark A. Friedl;Trevor F. Keenan;Oliver Sonnentag;Oliver Sonnentag

  • Using phenocams to monitor our changing Earth: toward a global phenocam network

    Tim B Brown;Kevin R Hultine;Heidi Steltzer;Ellen G Denny

  • Using digital repeat photography and eddy covariance data to model grassland phenology and photosynthetic CO2 uptake

    Mirco Migliavacca;Marta Galvagno;Edoardo Cremonese;Micol Rossini

  • Greenhouse gas (CO2, CH4, H2O) fluxes from drained and flooded agricultural peatlands in the Sacramento-San Joaquin Delta

    Jaclyn A. Hatala;Matteo Detto;Matteo Detto;Oliver Sonnentag;Oliver Sonnentag;Steven J. Deverel

  • On the correct estimation of effective leaf area index: does it reveal information on clumping effects?

    Youngryel Ryu;Tiit Nilson;Hideki Kobayashi;Oliver Sonnentag

  • Tracking forest phenology and seasonal physiology using digital repeat photography: a critical assessment

    T. F. Keenan;T. F. Keenan;B. Darby;E. Felts;O. Sonnentag;O. Sonnentag

  • Reviews and syntheses: Changing ecosystem influences on soil thermal regimes in northern high-latitude permafrost regions

    Michael M. Loranty;Benjamin W. Abbott;Daan Blok;Thomas A. Douglas

  • Is the spherical leaf inclination angle distribution a valid assumption for temperate and boreal broadleaf tree species

    Jan Pisek;Oliver Sonnentag;Oliver Sonnentag;Andrew D. Richardson;Matti Mõttus

  • FLUXNET-CH4 Synthesis Activity : Objectives, Observations, and Future Directions

    Sara H. Knox;Robert B. Jackson;Benjamin Poulter;Gavin McNicol

  • Increasing contribution of peatlands to boreal evapotranspiration in a warming climate

    Manuel Helbig;Manuel Helbig;James Michael Waddington;Pavel Alekseychik;Brian D. Amiro

  • Continuous observation of tree leaf area index at ecosystem scale using upward-pointing digital cameras

    Youngryel Ryu;Youngryel Ryu;Joseph Verfaillie;Craig Macfarlane;Hideki Kobayashi;Hideki Kobayashi

  • Statistical upscaling of ecosystem CO2 fluxes across the terrestrial tundra and boreal domain: Regional patterns and uncertainties

    Anna Maria Virkkala;Juha Aalto;Juha Aalto;Brendan M. Rogers;Torbern Tagesson;Torbern Tagesson

  • On the uncertainty of phenological responses to climate change, and implications for a terrestrial biosphere model

    Mirco Migliavacca;O. Sonnentag;O. Sonnentag;T. F. Keenan;A. Cescatti

Frequent Co-Authors

Dennis D. Baldocchi
Dennis D. Baldocchi University of California, Berkeley
Andrew D. Richardson
Andrew D. Richardson Northern Arizona University
Donatella Zona
Donatella Zona San Diego State University
Eugénie S. Euskirchen
Eugénie S. Euskirchen University of Alaska Fairbanks
Matthias Peichl
Matthias Peichl Swedish University of Agricultural Sciences
William L. Quinton
William L. Quinton Wilfrid Laurier University
Annalea Lohila
Annalea Lohila Finnish Meteorological Institute
Ankur R. Desai
Ankur R. Desai University of Wisconsin–Madison
Matteo Detto
Matteo Detto Princeton University
Youngryel Ryu
Youngryel Ryu Seoul National University

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