Letcher, Robert J.
Environment and Climate Change Canada,
Canada
2025 Rank: 53,723
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Earth & Environmental Sciences
SubField 1:
Environmental Sciences
SubField 2:
Toxicology
Rank in SubField 1: 1,177 out of 130,223 Researchers
Data For The Year: 2025
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 53,723 | 53,418 |
| Total Cites | 1,864 | 2,166 |
| H-index | 21 | 23 |
| Hm-index | 8 | 8 |
| Number of Single Authored Papers | 0 | 0 |
| Total Cites to Single Authored Papers | 0 | 0 |
| Number of Single+First Authored Papers | 26 | 26 |
| Total Cites to Single+First Authored Papers | 92 | 105 |
| Number of Single+First+Last Authored Papers | 138 | 138 |
| Total Cites to Single+First+Last Authored Papers | 501 | 567 |
| Composite Score | 2 | 2 |
| Number of Distinct Citing Papers | 1,227 | 1,305 |
| Ratio of Total Citations to Distinct Citing Papers | 1.52 | 1.66 |
| Self-Citation Percentage |
13.94%
|
|
Letcher, Robert J.
Carleton University,
Canada
2024 Rank: 64,925
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Earth & Environmental Sciences
SubField 1:
Environmental Sciences
SubField 2:
Toxicology
Rank in SubField 1: 1,260 out of 115,291 Researchers
Data For The Year: 2024
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 64,925 | 66,896 |
| Total Cites | 1,572 | 1,802 |
| H-index | 17 | 18 |
| Hm-index | 8 | 8 |
| Number of Single Authored Papers | 0 | 0 |
| Total Cites to Single Authored Papers | 0 | 0 |
| Number of Single+First Authored Papers | 26 | 26 |
| Total Cites to Single+First Authored Papers | 77 | 84 |
| Number of Single+First+Last Authored Papers | 133 | 133 |
| Total Cites to Single+First+Last Authored Papers | 438 | 486 |
| Composite Score | 2 | 2 |
| Number of Distinct Citing Papers | 1,024 | 1,093 |
| Ratio of Total Citations to Distinct Citing Papers | 1.54 | 1.65 |
| Self-Citation Percentage |
12.76%
|
|
Letcher, Robert J.
Carleton University,
Canada
2023 Rank: 69,131
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Earth & Environmental Sciences
SubField 1:
Environmental Sciences
SubField 2:
Toxicology
Rank in SubField 1: 1,157 out of 99,567 Researchers
Data For The Year: 2023
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 69,131 | 62,444 |
| Total Cites | 1,499 | 1,909 |
| H-index | 16 | 18 |
| Hm-index | 8 | 9 |
| Number of Single Authored Papers | 0 | 0 |
| Total Cites to Single Authored Papers | 0 | 0 |
| Number of Single+First Authored Papers | 26 | 26 |
| Total Cites to Single+First Authored Papers | 78 | 90 |
| Number of Single+First+Last Authored Papers | 130 | 130 |
| Total Cites to Single+First+Last Authored Papers | 477 | 569 |
| Composite Score | 2 | 2 |
| Number of Distinct Citing Papers | 967 | 1,037 |
| Ratio of Total Citations to Distinct Citing Papers | 1.55 | 1.84 |
| Self-Citation Percentage |
21.48%
|
|
Letcher, Robert J.
Carleton University,
Canada
2022 Rank: 63,794
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Earth & Environmental Sciences
SubField 1:
Environmental Sciences
SubField 2:
Toxicology
Rank in SubField 1: 823 out of 86,604 Researchers
Data For The Year: 2022
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 63,794 | 63,193 |
| Total Cites | 1,508 | 1,740 |
| H-index | 16 | 18 |
| Hm-index | 8 | 8 |
| Number of Single Authored Papers | 0 | 0 |
| Total Cites to Single Authored Papers | 0 | 0 |
| Number of Single+First Authored Papers | 26 | 26 |
| Total Cites to Single+First Authored Papers | 73 | 84 |
| Number of Single+First+Last Authored Papers | 128 | 128 |
| Total Cites to Single+First+Last Authored Papers | 479 | 523 |
| Composite Score | 2 | 2 |
| Number of Distinct Citing Papers | 917 | 972 |
| Ratio of Total Citations to Distinct Citing Papers | 1.64 | 1.79 |
| Self-Citation Percentage |
13.33%
|
|
Letcher, Robert J.
Carleton University,
Canada
2021 Rank: 51,743
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Earth & Environmental Sciences
SubField 1:
Environmental Sciences
SubField 2:
Toxicology
Rank in SubField 1: 622 out of 77,304 Researchers
Data For The Year: 2021
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 51,743 | 48,800 |
| Total Cites | 2,506 | 2,980 |
| H-index | 22 | 24 |
| Hm-index | 11 | 12 |
| Number of Single Authored Papers | 0 | 0 |
| Total Cites to Single Authored Papers | 0 | 0 |
| Number of Single+First Authored Papers | 26 | 26 |
| Total Cites to Single+First Authored Papers | 136 | 163 |
| Number of Single+First+Last Authored Papers | 125 | 125 |
| Total Cites to Single+First+Last Authored Papers | 827 | 945 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 1,491 | 1,571 |
| Ratio of Total Citations to Distinct Citing Papers | 1.68 | 1.90 |
| Self-Citation Percentage |
15.91%
|
|
Letcher, Robert J.
Carleton University,
Canada
2020 Rank: 52,518
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Earth & Environmental Sciences
SubField 1:
Environmental Sciences
SubField 2:
Toxicology
Rank in SubField 1: 584 out of 66,925 Researchers
Data For The Year: 2020
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 52,518 | 41,497 |
| Total Cites | 1,832 | 2,424 |
| H-index | 17 | 20 |
| Hm-index | 9 | 11 |
| Number of Single Authored Papers | 0 | 0 |
| Total Cites to Single Authored Papers | 0 | 0 |
| Number of Single+First Authored Papers | 25 | 25 |
| Total Cites to Single+First Authored Papers | 106 | 148 |
| Number of Single+First+Last Authored Papers | 122 | 122 |
| Total Cites to Single+First+Last Authored Papers | 646 | 826 |
| Composite Score | 2 | 3 |
| Number of Distinct Citing Papers | 1,093 | 1,173 |
| Ratio of Total Citations to Distinct Citing Papers | 1.68 | 2.07 |
| Self-Citation Percentage |
24.42%
|
|
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