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| Yavapai-Apache
Tribe |
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| The role of meteorology in the causes of haze |
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| Flows from southwest are dominant at the
site. Flows from the north become important in the winter. Figure 2
indicates that flows are more frequently from the southwest and southeast
during the worst visibility days. |
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| Figure 1. Normalized residence time in
January (left) and August (right) (based on data from 2000-2002) |
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| Figure 2. Normalized residence time in 20%
best (left) and worst (right) days (based on data from 2000-2002) |
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| Figure 3 suggests that flows from
southeast are more frequently associated with 20% worst sulfate days. |
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| 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) |
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| For an in depth discussion on the role of meteorology
at the Yavapai-Apache site see the
Meteorological
Discussion section. HYSPLIT backtrajectories for Yavapai-Apache can
be viewed in the
backtrajectory gallery page. |
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