2-9. In the development of an anticyclone, what changes occur in the  troposphere  and  lower stratosphere? 1. Warming occurs both in the 400- to 200-hPa stratum, and in the lower troposphere due to subsidence 2. Cooling occurs above the 400- to 200-hPa stratum, and warming occurs  in  the  lower  troposphere due  to  convergence 3. Warming occurs in the 400- to 200-hPa stratum due to subsidence, and cooling occurs in the lower troposphere due to convergence 4. Cooling  occurs  above  the 200-hPa level due to convergence in the 400- to 200-hPa  stratum,  and  warming occurs  in  the  lower  troposphere 2-10. Assume  you  are  forecasting  a surface high. YOU find  that  the 500-hPa height is NOT forecasted to increase,    although  convergence  is occurring above 500 hPa. What should you forecast for this high? 1. It will split 2. It will weaken 3. It  will  intensify 4. It will remain unchanged in intensity 2-11. In regard to satellite imagery interpretation  of  intensity  changes of surface cyclones, which of the following  statements  is  valid? 1. Filling  is  indicated  when Positive  Vorticity  Advection (PVA) becomes broader 2. High  clouds  surrounding  a vortex  indicate  cold  air advection 3. High  and/or  middle  clouds surrounding  a  vortex  indicate the  cyclone  has  reached maturity 4. Deepening  is  indicated  when  PVA becomes  narrower 2-12. The forecasting of frontal 2-13. 2-14. 2-15. displacement  by  the  geostrophic wind method should be based on which  of  the  following  components? 1. The  geostrophic  wind  component parallel  to  the  front  obtained at the time of the forecast 2. The  geostrophic  wind  component normal to the front obtained at the time of the forecast 3. A forecast of the mean component  of  the  geostrophic wind, parallel to the front, which is expected to prevail during  the  forecast  period 4. A forecast of the mean component  of  the  geostrophic wind,    normal to the front, which is expected to prevail during  the  forecast  period You should expect a front to have a rapid  west-east  movement  with little  southward  penetration  during what index cycle? 1. A low zonal index 2. A high zonal index 3. A  changing  zonal  index 4. A  decreasing  zonal  index Which  of  the  following  movements would  NOT  indicate  intensification of a surface front? 1. The surface front approaches a deep  upper  level  trough 2. The mean isotherms become more normal to the surface front 3. The mean isotherms become more parallel  to  the  surface,  and tend to pack 4. Both air masses have strengthened due to the underlying  surface When  the  mean  isotherms  associated with a frontal system become more perpendicular to the surface front, what  process  should  be  anticipated? 1. Frontogenesis 2. Frontolysis 3. Cyclogenesis 4. Cyclolysis 10