ASSIGNMENT 2 Textbook  Assignment: “Forecasting  Surface  Systems  (continued),”  and  “Forecasting  Weather Elements.” Pages 3-10 through 4-32. 2-1. When there are several waves along a front,    the wave nearest the axis of the trough will normally develop at the expense of the others. 1. True 2. False 2-2. Assume  you  have  a  northwestward moving  surface  low  situated  over the eastern United States. The low is beneath the 10,700-m contour at the 200-hPa level. It is expected to move northeastward and be located  beneath  the  10,520-m contour at the 200-hPa level in 24 hr. If you use the approximation method,    what would be the expected deepening of the low in 24 hr? 1. 7.2  hPa 2. 10.8 hPa 3. 13.5 hPa 4. 21.0 hPa 2-3. When a surface low moves beneath or ahead of the major ridge position at the 500-hPa level, what changes can be anticipated of the surface low? 1. The surface low will deepen 2. The surface low will fill 3. The  associated  weather  will become  more  widespread 4. The surface low will move rapidly  eastward 2-4. With a southerly flow at the 700-hPa level along the east coast of the United States, where can you anticipate  development  of  a secondary  low? 1. The northern Gulf of Mexico 2. Over the gulf states 3. Offshore, New  England 4. The vicinity of Cape Hatteras 2-5. What would most likely occur in the lower  stratosphere  above  the 300-hPa level if the column of air in a deepening low below the 300-hPa level were to become colder? 1. 2. 3. 4. Subsidence  in  the  lower stratosphere,  resulting  in warming  and  lowering  of  the constant  pressure  surfaces Convergence  in  the  lower stratosphere,  resulting  in cooling and lowering of the constant  pressure  surfaces Subsidence  in  the  lower stratosphere,  resulting  in cooling and lowering of the constant  pressure  surfaces Convergence  in  the  lower stratosphere,  resulting  in warming  and  lowering  of  the constant  pressure  surfaces IN ANSWERING QUESTION 2-6, REFER TO FIGURE 3-8 IN YOUR TRAMAN. 2-6. Which  of  the  following  assumptions can be made from figure 3-8? 1. A surface high would exist to the left 2. The level of equal density is above  the  200-hPa  level 3. The  tropopause  layer  is  not significantly  altered  by  the upper  high 4. All  of  the  above  assumptions can be made 2-7. Assume  that  the  upper  current  over a surface low is undisturbed and the low is deviating to the left of the  upper  contours  (looking downstream). What  should  you forecast for this low? 1. The low should fill 2. The  low  should  deepen 3. The low should split 4. The  low  should  remain  unchanged 2-8. Deepening  lows  always  move  more slowly than filling lows. 1. True 2. False 9