Analyse des groupes ; Analyse en composantes principales ; Atmosphère ; California ; Circulation atmosphérique ; Etats-Unis ; Ozone ; Pollution ; Printemps ; Stratosphère ; Traceur ; Variabilité saisonnière
Atmosphere ; Atmospheric circulation ; California ; Cluster analysis ; Ozone ; Pollution ; Principal components analysis ; Seasonal variability ; Spring ; Stratosphere ; Tracer ; United States of America
Many remote locations in the Northern Hemisphere have a spring peak, rather than a summer peak, in ground-level ozone concentrations, and the principal cause is presumed to be stratosphere-troposhere exchange (i.e., stratospheric intrusions). Grand
Canyon National Park (GCNP) in northern Arizona also has a spring peak, and the purpose of this study is to explore the impact of stratospheric intrusions and another process synoptic-scale pollutant transport on ground-level ozone levels at GCNP from