For more information about National Park Service air resources, please visit https://www.nature.nps.gov/air/.
Studies and Monitoring
Crater Lake National Park
Crater Lake National Park (NP), Oregon, has its own unique environmental concerns based on its particular ecology. Air quality monitoring at Crater Lake NP focuses on visibility conditions and trends. Ecological assessments have evaluated the risk to park resources from the deposition of airborne toxics, and nitrogen and sulfur compounds. Click on the tabs below to review air quality studies and key scientific references at Crater Lake NP, as well as to access information on air quality monitoring in the park.
- Studies & Projects
- Monitoring & Data
- Key References
Ongoing research in Crater Lake NP, Oregon:
Nitrogen & Sulfur Impacts
National assessments rated resources at the park to be at very high risk from the enrichment effects of nitrogen deposition, and at high risk from acidification effects from sulfur and nitrogen deposition. Both enrichment and acidification can cause changes in plant, lake, and stream communities, resulting in a loss of biodiversity (Sullivan et al. 2011a; Sullivan et al. 2011b [pdf, 6.8 MB]; Sullivan et al. 2011c; Sullivan et al. 2011d [pdf, 2.6 MB]).
Airborne Toxic, including Mercury, Impacts
Research findings from the Western Airborne Contaminants Assessment Project indicate the presence of toxic contaminants in park air and vegetation samples (Landers et al. 2010; Landers et al. 2008). Follow-up research is examining the extent to which contaminants are causing abnormalities in reproductive organs in fish at Crater Lake NP and other parks. Additionally, an ongoing study to analyze mercury concentrations in fish from western national parks, including Crater Lake NP, will fill gaps in understanding the extent of mercury contamination and identify potential risks to humans and fish-eating wildlife at Crater Lake (study overview [pdf, 699 KB]). find data»
Air quality monitoring information and data access:
Sites and Data Access
|Nitrogen & Sulfur||NPS Air Quality Inventory|
|Toxics & Mercury||WACAP|
|Ozone||NPS Air Quality Inventory|
Abbreviations in the above table:
IMPROVE: Interagency Monitoring of Protected Visual Environments
NPS: National Park Service
VIEWS: Visibility Information Exchange Web System
WACAP: Western Airborne Contaminants Assessment Project
Key air quality related references from Crater Lake NP, Oregon:
Eilers, J. M., Rose, C. L., Sullivan, T. J. 1994. Status of Air Quality and Effects of Atmospheric Pollutants on Ecosystems in the Pacific Northwest Region of the National Park Service. NPS Final Report. 255 pp. Crater Lake National Park. Available at https://www.nature.nps.gov/air/Pubs/pdf/reviews/pnw/PNWfinalreport2.pdf (pdf, 1.0 MB).
[IMPROVE] Interagency Monitoring of Protected Visual Environments. 2010. Improve Summary Data. Available at http://vista.cira.colostate.edu/improve/Data/IMPROVE/summary_data.htm.
Landers, D. H., Simonich, S. M., Jaffe, D., Geiser, L., Campbell, D. H., Schwindt, A., Schreck, C., Kent, M., Hafner, W., Taylor, H. E., Hageman, K., Usenko, S., Ackerman, L., Schrlau, J., Rose, N., Blett, T., Erway, M. M. 2010. The Western Airborne Contaminant Assessment Project (WACAP): An Interdisciplinary Evaluation of the Impacts of Airborne Contaminants in Western U.S. National Parks. Environmental Science and Technology 44: 855–859.
Landers, D. H., S. L. Simonich, D. A. Jaffe, L. H. Geiser, D. H. Campbell, A. R. Schwindt, C. B. Schreck, M. L. Kent, W. D. Hafner, H. E. Taylor, K. J. Hageman, S. Usenko, L. K. Ackerman, J. E. Schrlau, N. L. Rose, T. F. Blett, and M. M. Erway. 2008. The Fate, Transport, and Ecological Impacts of Airborne Contaminants in Western National Parks (USA). EPA/600/R—07/138. U.S. Environmental Protection Agency, Office of Research and Development, NHEERL, Western Ecology Division, Corvallis, Oregon. Available at https://www.nature.nps.gov/air/studies/air_toxics/WACAPreport.cfm.
Sullivan, T. J., McDonnell, T. C., McPherson, G. T., Mackey, S. D., Moore, D. 2011a. Evaluation of the sensitivity of inventory and monitoring national parks to nutrient enrichment effects from atmospheric nitrogen deposition: main report. Natural Resource Report NPS/NRPC/ARD/NRR—2011/313. National Park Service, Denver, Colorado. Available at www.nature.nps.gov/air/permits/aris/networks/n-sensitivity.cfm.
Sullivan, T. J., McDonnell, T. C., McPherson, G. T., Mackey, S. D., Moore, D. 2011b. Evaluation of the sensitivity of inventory and monitoring national parks to nutrient enrichment effects from atmospheric nitrogen deposition: Klamath Network (KLMN). Natural Resource Report NPS/NRPC/ARD/NRR—2011/330. National Park Service, Denver, Colorado. Available at https://www.nature.nps.gov/air/Pubs/pdf/n-sensitivity/klmn_n_sensitivity_2011-02.pdf (pdf, 6.8 MB).
Sullivan, T. J., McPherson, G. T., McDonnell, T. C., Mackey, S. D., Moore, D. 2011c. Evaluation of the sensitivity of inventory and monitoring national parks to acidification effects from atmospheric sulfur and nitrogen deposition: main report. Natural Resource Report NPS/NRPC/ARD/NRR—2011/349. National Park Service, Denver, Colorado. Available at https://www.nature.nps.gov/air/permits/aris/networks/acidification-eval.cfm.
Sullivan, T. J., McPherson, G. T., McDonnell, T. C., Mackey, S. D., Moore, D. 2011d. Evaluation of the sensitivity of inventory and monitoring national parks to acidification effects from atmospheric sulfur and nitrogen deposition: Klamath Network (KLMN). Natural Resource Report NPS/NRPC/ARD/NRR—2011/360. National Park Service, Denver, Colorado. Available at https://www.nature.nps.gov/air/Pubs/pdf/acidification/klmn_acidification-eval_2011-05.pdf (pdf, 2.6 MB).
Pollutants including nitrogen, pesticides, and fine particles affect resources such as surface waters, soils, and scenic vistas. Find out how on our Crater Lake NP Air Pollution Impacts web page.
Last Updated: January 03, 2017