Photo AI
Climate changes over time and space - Leaving Cert Geography - Question 24 - 2018
Question 24
Climate changes over time and space. Discuss.
Worked Solution & Example Answer:Climate changes over time and space - Leaving Cert Geography - Question 24 - 2018
Step 1
Identifying aspect: Long-term Climate Change
Answer
Long-term climate changes refer to significant shifts occurring over geological timescales, such as ice ages and warming periods. The Earth’s climate has experienced numerous cycles influenced by factors such as tectonic plate movements, volcanic activity, and variations in solar radiation. For instance, during the last Ice Age, global temperatures were markedly lower than today, leading to expanded glacial coverage in the Northern Hemisphere.
Step 2
Identifying aspect: Impact of Human Activity
Answer
Human activities have dramatically altered the climate over the past century, primarily through the burning of fossil fuels, deforestation, and industrial processes. This anthropogenic climate change results in increased levels of greenhouse gases in the atmosphere, contributing to global warming. The Intergovernmental Panel on Climate Change (IPCC) provides extensive data illustrating how average global temperatures have risen, leading to more frequent and severe weather events.
Step 3
Identifying aspect: Regional Climate Variability
Answer
Climate can change differently across various geographic regions due to local environmental factors. For example, while the Arctic is experiencing rapid warming, other areas like parts of the Tropics may face increased drought conditions. This regional variability is influenced by topography, ocean currents, and urbanization, leading to diverse impacts on ecosystems and human societies.