2.1. Study the map of pressure cells in Figure 2.60 . 2.1.1 Which hemisphere is experiencing winter? (1) 2.1.2 Is there a high or a low pressure system at A? 2.1.3 Explain why this pressure system exists at A. \[ (2+2=4) \] 2.1.4 Is there a high or a low pressure system at B? (1) 2.1.5 Explain why this pressure system exists at B. \[ (2+2=4) \] 2.1.6 Which hemisphere is experiencing summer? 2.1.7 Is there a high or a low-pressure system at C ?

During the winter months, the hemisphere that is tilted away from the sun experiences colder temperatures and shorter days. This typically manifests as high-pressure systems dominating the area because colder air is denser and tends to sink, leading to clearer skies and reduced storm activity. Conversely, the hemisphere tilted towards the sun enjoys warmer temperatures and longer days, marking the summer season, where low-pressure systems are often present due to the warmer, lighter air rising, creating more dynamic weather patterns. In regions identified by letters A, B, and C on a pressure map, high and low pressure systems develop largely due to the movement of air masses and temperature differences across the globe. For example, at point A, a high-pressure system may exist because cold air descends, increasing atmospheric pressure. At point B, a low-pressure system could be formed due to warm air rising, causing air to converge and create clouds and precipitation. The characteristics of these systems can significantly impact localized weather conditions.