Homework 5 Comment Key

1. Instructions stated to do rough draft first on acetate or tracing paper. Sloppiness results in deductions. (-10 points)
2. No frontal analysis or dry line analysis attempted. (-10 points; dry line missing only, -2)
3. Dry line is boundary between warm dry and warm moist air, and cannot extend into cold air. (-1 point)
4. Frontal symbols drawn backwards. (-1 point)
5. Isobars squiggly indicating unthoughtful 'connect the dots' analysis and lack of rough draft. (-3 points)
6. Lows and Highs not indicated. (-3 points)
7. Incomplete analysis, or isobars lacking in large areas. (-3 points)
8. Isobars of unequal value connect. (-3 points)
9. Infinite pressure gradient indicated by unthoughtful analysis of isobars nearly touching (inconsistent with winds). (-2 points)
10. Lack of consistency with previous charts (lows and highs back up, or jump too far ahead). (-5 points)
11. Pressure system mislocated (for example, on 18 UTC chart 35 knot sustained wind in northwestern New Mexico suggests at least one additional isobar (a 996.0 mb) in SW CO, locating the low further north. (No deduction)
12. No labels on isobars. (-3 points)
13. Chart missing (either 18 UTC or 00 UTC) (50 points each chart total)
14. Frontal analysis inconsistent with sfc temperature field. (-1 point)