- Atmospheric Sciences 4
- Ecology 4
- Environment, general 4
- Environmental Management 4
- Atmospheric Protection/Air Quality Control/Air Pollution 3
- Environmental Engineering/Biotechnology 3
- Physical Geography 3
- Science, Humanities and Social Sciences, multidisciplinary 2
- Science, multidisciplinary 2
- Climate Change/Climate Change Impacts 1
- Climatology 1
- Earth Sciences, general 1
- Earth System Sciences 1
- Ecotoxicology 1
- Geochemistry 1
- Geology 1
- Geophysics/Geodesy 1
- Hydrogeology 1
- Monitoring/Environmental Analysis 1
- Soil Science & Conservation 1