The Relationship Between Atmospheric Transport and the Particle Scattering Coefficient at the Grand Canyon
| Autor: | Desong Liu, Jonathan D. W. Kahl, Luis A. de P. Vasconcelos, Edward S. Macias, Warren H. White |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Canyon
geography geography.geographical_feature_category Meteorology Flow (psychology) Airflow Air pollution Management Monitoring Policy and Law Atmospheric dispersion modeling medicine.disease_cause Atmospheric sciences Light scattering medicine Environmental science Visibility Waste Management and Disposal Air quality index |
| Zdroj: | ResearcherID |
| ISSN: | 2162-2906 |
| Popis: | Air trajectory and particle scattering data (bsp) for the period 1984-1989 are used to determine the relationship between atmospheric transport and visual air quality at the Grand Canyon National Park. Using cluster analysis, 72-hour back-trajectories arriving four times per day were grouped into distinct transport patterns. Northwesterly and southerly/southwesterly flow dominate in the winter and summer seasons, respectively. Comparisons of bsp values accompanying different transport patterns showed a clear relationship between air flow pathway and light scattering due to small particles during the non-summer months only. An index is defined which describes the percentage of annual trajectories belonging to specific transport routes delivering predominantly clear air to the GCNP. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|