Analyze the provided synoptic weather map and answer the following questions regarding pressure systems, fronts, and weather changes.

Here are the answers to question 1.1:

• 1.1.1: The synoptic weather map illustrates typical winter conditions, characterized by a well-developed mid-latitude cyclone with associated fronts.
  • Y
• 1.1.2: Line A-A represents a ridge, which is an elongated area of high pressure extending from the high-pressure system (H).
  • Y
• 1.1.3: The air pressure reading of isobar B is clearly labeled as 1004 hPa.
  • Z
• 1.1.4: The air pressure gradient is steeper where isobars are closer together. The isobars are closer around weather station D than around E.
  • Y
• 1.1.5: In the Southern Hemisphere, air circulates anticlockwise around a high-pressure system (anticyclone). The north-easterly wind at Durban is consistent with the anticlockwise circulation around the high-pressure system to its east.
  • Y
• 1.1.6: Weather station C is located ahead of the cold front. Unstable weather conditions are typically associated with the development or approach of a cold front.
  • Y
• 1.1.7: The weather changes described are a wind shift to south-west and an air temperature decrease of 5 °C.
  • Option Y shows a temperature decrease of $30^\circ\text{C} - 12^\circ\text{C} = 18^\circ\text{C}$.
  • Option Z shows a temperature decrease of $24^\circ\text{C} - 18^\circ\text{C} = 6^\circ\text{C}$.
  • Both show a wind shift to south-west. Option Z's temperature decrease (6 °C) is closer to the stated 5 °C than option Y's (18 °C).
  • Z