Mitigation

IPCC definition

Mitigation (of climate change) – a human intervention to reduce emissions or enhance the sinks of greenhouse gases.

Explanation

• Stopping climate change from getting worse.
• Concept of “mitigation”  often focus on fossil fuels – coal, oil and natural gas – used to make electricity and run cars, buses and planes.
• How do fossil Fuels harm : Fossil fuels produce greenhouse gases, including carbon dioxide. When these gases are released, they linger in the atmosphere. They then trap heat and warm the planet.
• How to MITIGATE : Some ways to mitigate climate change include using solar and wind power instead of coal-fired power plants; making buildings, appliances and vehicles more energy efficient so they use less electricity and fuel; and designing cities so people have to drive less. Protecting forests and planting trees also help because trees absorb greenhouse gases from the atmosphere and lock them away.

Adaptation

IPCC definition

• In human systems, the process of adjustment to actual or expected climate and its effects, in order to moderate harm or exploit beneficial opportunities.
• In natural systems, the process of adjustment to actual climate and its effects; human intervention may facilitate adjustment to expected climate and its effects.

Explanation

• Getting adapted to decrements
• Los Angeles, for example, is planting trees to help people stay cooler. Coastal cities like Miami may need sea walls to protect against floods.
• More “adaptation” actions will be needed as climate change gets worse.

Carbon dioxide removal

IPCC definition

Carbon dioxide removal methods refer to processes that remove CO2 from the atmosphere by either increasing biological sinks of CO2 or using chemical processes to directly bind CO2. CDR is classified as a special type of mitigation.

Explanation

• Taking carbon dioxide out of the air.
• The amount of carbon dioxide in the air has been increasing for many years

WHAT NEEDS TO BE DONE

• Planting trees and restoring grasslands can remove carbon dioxide from the air.
• There are also carbon dioxide removal technologies that store it underground or in concrete, but these are new and not widely used. Example – CARBON MINERALIZATION

Carbon neutral

IPCC definition

Carbon neutrality is achieved when anthropogenic CO2 emissions are balanced globally by anthropogenic carbon dioxide removals over a specified period. Carbon neutrality is also referred to as net-zero carbon dioxide emission.

Explanation

• Adding no net carbon dioxide into the air.
• It means amount of carbon dioxide  added  into the air and taken out must be the same
• The IPCC warns that the world needs to be carbon neutral by 2050 to avoid a serious climate crisis. This means using both “mitigation” to reduce the amount of carbon dioxide added to the air and “carbon dioxide removal” to take carbon dioxide out of the air.

Tipping point

IPCC definition

• A level of change in system properties beyond which a system reorganizes, often abruptly, and does not return to the initial state even if the drivers of the change are abated.
• For the climate system, it refers to a critical threshold when global or regional climate changes from one stable state to another stable state.

Explanation

• When it is too late to stop effects of climate change.
• One of the most talked-about tipping points involves the collapse of the West Antarctic ice sheet. Some research suggests it may have already started happening.
• West Antarctica alone holds enough ice to raise sea levels worldwide by about 11 feet (3.3 meters). If all glaciers and ice caps melt, sea levels will end up rising about 230 feet (70 meters).

Unprecedented transition

IPCC definition

The process of changing from one state or condition to another in a given period of time. Transition can be in individuals, firms, cities, regions and nations and can be based on incremental or transformative change.

Explanation

• Making big changes together to stop climate change – in a way that has not been seen before.
• In 2015, countries around the world agreed to try to keep the planet from warming more than 1.5 degrees Celsius (2.7 F).
• Among the biggest sources of global warming are coal-fired power plants.
• Quickly shifting the world to renewable energy, such as wind and solar power, would be an unprecedented transition.
• Without big changes, climate change could make the world unlivable.

Sustainable development

IPCC definition

Development that meets the needs of the present without compromising the ability of future generations to meet their own needs and balances social, economic and environmental concerns.

Explanation

Living in a way that is good for people alive today and for people in the future.

The United Nations has shared “sustainable development goals.” These goals aim to help countries grow in ways that are healthy for both people and the environment. Producing more carbon dioxide than the planet can manage is an example of unsustainable development that’s causing climate change.

Abrupt change

IPCC definition

Abrupt climate change refers to a large-scale change in the climate system that takes place over a few decades or less, persists (or is anticipated to persist) for at least a few decades and causes substantial disruptions in human and natural systems.

Explanation

• A change in climate that happens much faster than it normally would.
• Our world is changing quickly as a result of climate change. Wildfires are raging in parts of the Western US that were once too wet to burn. Coral reefs are dying as the ocean is getting warmer.
• These changes would not have happened so quickly – or at all – were it not for climate change.