Global temperature refers to the average temperature of the Earth's surface, which is influenced by various factors such as solar radiation, greenhouse gases, and ocean currents. Scientists monitor global temperature to understand climate patterns and changes over time. Rising global temperatures are a significant concern, as they can lead to climate change and extreme weather events. The increase in temperature is primarily attributed to human activities, such as burning fossil fuels and deforestation, which release carbon dioxide and other greenhouse gases into the atmosphere.