Find a Professional
International Institute for Applied Systems Analysis Find a Professional 2025
Find a Professional: Explore Experts Across 197 Disciplines in 220 Countries! Looking for the top professional in your field, anywhere in the world or your region? Discover our comprehensive directory of experts in engineering, medicine, law, business, arts, and more. Whether you need an architect, doctor, psychologist, mechanical engineer, economist, or lawyer, find the right professional ranked by excellence across 197 disciplines. Start your search today and connect with the best in their fields across 220 countries! Our Premium members gain greater visibility in the directory, ranking higher in search results and reaching a broader audience. With these advantages, you can: Secure more job and client opportunities, Stand out in your field and build a trusted professional image, Connect more easily with potential business partners and professionals. Stand out, make an impact, and seize opportunities! Highlight your expertise, increase your recognition in the industry, and connect with more opportunities by upgrading to Premium today. With Premium membership, you can rise above the competition and take one step closer to success! Upgrade to Premium Now and Showcase Yourself to the World!
climate change
energy economics
integrated assessment
technological change
sustainable development
Metrics
H-Index
i10 Index
Citation Counts
121
291
128,012
Biodiversity
Food Security
Sustainability
Environmental Economics
Land-Use Modeling
Metrics
H-Index
i10 Index
Citation Counts
110
292
49,352
Hydrology
Groundwater
Environment
Agriculture
Systems Science
Metrics
H-Index
i10 Index
Citation Counts
106
210
45,444
Metrics
H-Index
i10 Index
Citation Counts
97
199
42,876
Air quality
Climate
Energy
Metrics
H-Index
i10 Index
Citation Counts
89
226
59,385
Land use
land cover
Earth Observation
citizen science
crowdsourcing
Metrics
H-Index
i10 Index
Citation Counts
79
223
21,629
land cover
food security
GIS
remote sensing
crowdsourcing
Metrics
H-Index
i10 Index
Citation Counts
78
185
22,285
Metrics
H-Index
i10 Index
Citation Counts
74
204
45,272
Demography
Population
Human Capital
Metrics
H-Index
i10 Index
Citation Counts
73
224
29,120
Metrics
H-Index
i10 Index
Citation Counts
73
152
27,304
Discover Leading Experts: Premium membership highlights you at the top, increasing your visibility and influence in 13 major fields and 197 disciplines. Be seen first!
Socio-economics of risk management and climate adaptation
Metrics
H-Index
i10 Index
Citation Counts
62
143
18,249
Energy economics
Energy and development
Energy Policy
Metrics
H-Index
i10 Index
Citation Counts
61
108
17,279
Conservation Biology
Metrics
H-Index
i10 Index
Citation Counts
54
87
15,493
cultural theory
rubbish theory
Metrics
H-Index
i10 Index
Citation Counts
54
128
16,152
Energy Economics
Air Pollution
Fluorinated Greenhouse Gases
Climate Change Mitigation
Short-lived Climate Forcers (SLCPs)
Metrics
H-Index
i10 Index
Citation Counts
53
125
10,915
Metrics
H-Index
i10 Index
Citation Counts
48
116
10,603
Grassland management
Climate change
Agriculture
Biogeochemical cycle
Land-use change
Metrics
H-Index
i10 Index
Citation Counts
47
95
8,764
Integrated Assessment Modeling
Climate Change
Energy Demand
Macro Energy Systems
Energy
Metrics
H-Index
i10 Index
Citation Counts
47
79
12,705
Biodiversity
conservation
climate change
Metrics
H-Index
i10 Index
Citation Counts
45
90
18,084
Metrics
H-Index
i10 Index
Citation Counts
40
101
6,809
Land-use Modelling
Climate Change Mitigation
Food Security
Sustainable Development
Metrics
H-Index
i10 Index
Citation Counts
39
53
9,752
formal demography
aging
population forecasting
demography
Metrics
H-Index
i10 Index
Citation Counts
39
104
10,042
Mitigation of non-CO2 greenhouse gases
in particular methane
Metrics
H-Index
i10 Index
Citation Counts
38
67
11,640
Metrics
H-Index
i10 Index
Citation Counts
37
49
16,577
Hydrology
Hydrological Modelling
Water Cycle
Metrics
H-Index
i10 Index
Citation Counts
37
52
7,026
Keywan Riahi
Metrics
H-Index
i10-Index
Citation Counts
121
291
128,012
climate change
energy economics
integrated assessment
technological change
sustainable development
Michael Obersteiner
Metrics
H-Index
i10-Index
Citation Counts
110
292
49,352
Biodiversity
Food Security
Sustainability
Environmental Economics
Land-Use Modeling
Yoshihide Wada
Metrics
H-Index
i10-Index
Citation Counts
106
210
45,444
Hydrology
Groundwater
Environment
Agriculture
Systems Science
Petr Havlik
Metrics
H-Index
i10-Index
Citation Counts
97
199
42,876
Linda See
Metrics
H-Index
i10-Index
Citation Counts
79
223
21,629
Land use
land cover
Earth Observation
citizen science
crowdsourcing
Steffen Fritz
Metrics
H-Index
i10-Index
Citation Counts
78
185
22,285
Markus Amann
Metrics
H-Index
i10-Index
Citation Counts
74
204
45,272
Wolfgang Lutz
Metrics
H-Index
i10-Index
Citation Counts
73
224
29,120
Pavel Kabat
Metrics
H-Index
i10-Index
Citation Counts
73
152
27,304
Discover Leading Experts: Premium membership highlights you at the top, increasing your visibility and influence in 13 major fields and 197 disciplines. Be seen first!
Reinhard Mechler
Metrics
H-Index
i10-Index
Citation Counts
62
143
18,249
Socio-economics of risk management and climate adaptation
Shonali Pachauri
Metrics
H-Index
i10-Index
Citation Counts
61
108
17,279
Energy economics
Energy and development
Energy Policy
Piero Visconti
Metrics
H-Index
i10-Index
Citation Counts
54
87
15,493
Michael Thompson
Metrics
H-Index
i10-Index
Citation Counts
54
128
16,152
Pallav Purohit
Metrics
H-Index
i10-Index
Citation Counts
53
125
10,915
Energy Economics
Air Pollution
Fluorinated Greenhouse Gases
Climate Change Mitigation
Short-lived Climate Forcers (SLCPs)
Fabian Wagner
Metrics
H-Index
i10-Index
Citation Counts
48
116
10,603
Jinfeng Chang
Metrics
H-Index
i10-Index
Citation Counts
47
95
8,764
Grassland management
Climate change
Agriculture
Biogeochemical cycle
Land-use change
Bas J. Van Ruijven
Metrics
H-Index
i10-Index
Citation Counts
47
79
12,705
Integrated Assessment Modeling
Climate Change
Energy Demand
Macro Energy Systems
Energy
Albert Van Jaarsveld
Metrics
H-Index
i10-Index
Citation Counts
45
90
18,084
Stefan Hochrainer-Stigler
Metrics
H-Index
i10-Index
Citation Counts
40
101
6,809
Stefan Frank
Metrics
H-Index
i10-Index
Citation Counts
39
53
9,752
Land-use Modelling
Climate Change Mitigation
Food Security
Sustainable Development
Sergei Scherbov
Metrics
H-Index
i10-Index
Citation Counts
39
104
10,042
Lena Höglund Isaksson
Metrics
H-Index
i10-Index
Citation Counts
38
67
11,640
Mitigation of non-CO2 greenhouse gases
in particular methane
Oliver Fricko
Metrics
H-Index
i10-Index
Citation Counts
37
49
16,577
Peter Burek
Metrics
H-Index
i10-Index
Citation Counts
37
52
7,026
Hydrology
Hydrological Modelling
Water Cycle