| |
| Hualapai Tribe |
| |
| The role of meteorology in the causes of haze |
| |
| Flows from southeast and northwest are dominant at the
site. Monsoonal flows from the south and southeast become important in the
summer. Figure 2 indicates that flows are more frequently from the south and
southeast during the worst visibility days. |
|
|
| Figure 1. Normalized residence time in
January (left) and August (right) (based on data from 2000-2002) |
|
|
|
| Figure 2. Normalized residence time in 20%
best (left) and worst (right) days (based on data from 2000-2002) |
|
| Figure 3 suggests that flows from
south and southeast are more frequently associated with 20% worst sulfate days.
The ratio map also points toward an upper midwest source area for sulfate. |
|
|
|
| Figure 3. Difference (left) and ratio (right) of
normalized residence time in 20% worst sulfate days and all days in
2000-2002 (possible important source regions are shown up as blue in the
maps) |
|
| |
| For an in depth discussion on the role of meteorology
at the Meadview site see the
Meteorological
Discussion section. HYSPLIT backtrajectories for Hualapai can
be viewed in the
backtrajectory gallery page. |
| |
|
|
