Some greenhouse gases stay in our atmosphere for hundreds of years. This means that the emissions we have released into our atmosphere are effectively locked in and will contribute to increasing temperatures. Even if we stop all emissions tomorrow, we cannot avoid some level of warming. The extent of warming, beyond what we have already caused, depends on the changes we make.
If we continue to burn fossil fuels and cut down forests at the same rate, the planet could warm by more than 4°C by 2100. This warming could fundamentally change life on earth, with potentially significant consequences. Projected changes to the global climate include:
|Rising ocean levels||Rising temperatures are causing glaciers and ice sheets to melt, adding more water to the oceans and causing the ocean level to rise. Oceans absorb 90% of the extra heat from global warming: warmer water expands, and so our oceans are taking up more space.|
|Ocean acidification||Ocean acidification occurs when the ocean absorbs carbon dioxide and becomes more acidic.|
|Extreme Weather Events||Climate change is causing many extreme weather events to become more intense and frequent, such as heatwaves, droughts, and floods.|
|Flooding of coastal regions||Coastal cities (e.g. Belfast) are at risk from flooding as sea levels continue to rise|
|Food insecurity||High temperatures, extreme weather events, flooding, and droughts damage farmland. This makes it difficult for farmers to grow crops and means that their yield of crops each year is uncertain.|
|Conflict and climate migrants||Climate change can exacerbate existing problems, such as lack of food or shelter. This may cause global conflict over resources (food, water, and shelter) and cause others to migrate in large numbers.|
|Biodiversity loss||Rising temperatures, changing rainfall patterns and extreme weather events are disturbing natural habitats and putting pressure on species already threatened by other human activities.|
Climate change is approached in two main ways:
Our climate is changing. We need to reduce our emissions to limit these changes. Unfortunately, no matter how much we reduce our emissions, we are locked in to a certain amount of change. Therefore, we need to take rapid action to reduce emissions, whilst preparing for the inevitable impacts of climate changes – this preparation is called climate change ‘adaptation’.
The European Commission defines adaptation as: “Anticipating the adverse effects of climate change and taking appropriate action to prevent or minimise the damage they can cause, or taking advantage of opportunities that may arise.”
Adaptation is essential to better prepare us to respond to current and future changing climatic conditions. Planning for these changes will enable NI to build resilience to the potential negative impacts of climate change, whilst allowing us to take advantage of any opportunities.
Northern Ireland requires urgent action on climate change. The public sector needs support to plan and deliver greenhouse gas emissions reductions. Climate NI’s work on mitigation aims to develop and pilot a coordinated and cohesive approach to net-zero planning, progress reporting, and capacity building to enable delivery of immediate and long-term climate action.
- Raising awareness and capacity building
- Understanding baseline emissions
- Facilitating access to available resources and toolkits
- Identifying and prioritising action
- Developing, monitoring and evaluating emission reduction plans