Climate Glossary
A comprehensive reference of climate change terms and definitions. Use the alphabet navigation or search to quickly find the term you need.
Showing 111 of 111 terms
Adaptation
Actions taken to adjust to actual or expected climate impacts. It reduces harm from climate risks or takes advantage of new conditions.
Adaptive capacity
The ability of systems, communities, or institutions to cope with climate impacts. Higher capacity means better preparation and recovery.
Afforestation
Planting trees on land that has not been forested for a long time. It helps absorb carbon dioxide and improve ecosystems.
Agroforestry
The integration of trees into farming systems. It improves soil health, biodiversity, and resilience to climate stress.
Air quality
The condition of the air based on pollutant levels. Climate change and air pollution often influence each other.
Albedo
The measure of how much sunlight a surface reflects. Ice and snow have high albedo and help keep the planet cool.
Anthropogenic emissions
Greenhouse gases released due to human activities. These include emissions from energy use, industry, and agriculture.
Atmosphere
The layer of gases surrounding the Earth. It traps heat and regulates climate.
Baseline emissions
The level of emissions expected without additional climate action. It is used to measure progress in reducing emissions.
Biodiversity
The variety of living species in an area. Climate change threatens ecosystems and species survival.
Bioenergy
Energy produced from biological materials such as crops or waste. It can reduce fossil fuel use if managed sustainably.
Biomass
Organic material used as fuel or energy source. It includes wood, crops, and agricultural waste.
Blue carbon
Carbon stored in coastal ecosystems such as mangroves and seagrasses. These areas capture and store carbon efficiently.
Buffer zone
An area created to protect ecosystems or communities from environmental risks. It can reduce climate impacts such as flooding.
Business as usual
A scenario where no additional climate policies are implemented. It helps compare the effects of new actions.
Carbon cycle
The movement of carbon through the atmosphere, land, oceans, and living organisms. Human activities have disrupted this cycle.
Carbon dioxide
A major greenhouse gas released from burning fossil fuels and deforestation. It is the primary driver of global warming.
Carbon footprint
The total greenhouse gas emissions caused by an individual, organization, or activity. It is often measured in carbon dioxide equivalents.
Carbon market
A system where carbon emission reductions are traded. It creates financial incentives to reduce emissions.
Carbon neutrality
Balancing emitted carbon with an equivalent amount removed or offset. It aims for net zero emissions.
Carbon sink
A natural or artificial system that absorbs more carbon than it releases. Forests and oceans are major sinks.
Climate
The long term pattern of weather in a region. It differs from short term weather conditions.
Climate action
Efforts to reduce emissions and adapt to climate impacts. It involves governments, businesses, and communities.
Climate change
Long term shifts in temperature and weather patterns. It is largely driven by human activities.
Climate finance
Funding that supports climate mitigation and adaptation projects. It can come from public or private sources.
Climate justice
The idea that climate impacts and solutions should be fair and equitable. Vulnerable groups often face the greatest risks.
Climate model
A scientific tool used to simulate climate systems. It helps predict future climate conditions.
Climate resilience
The ability to withstand and recover from climate impacts. It involves planning, infrastructure, and community capacity.
Climate risk
The potential negative effects of climate hazards on people or systems. It includes physical and economic risks.
Climate services
Information and tools that help people make climate informed decisions. They include forecasts and risk assessments.
Decarbonization
The process of reducing carbon emissions from energy and industry. It often involves switching to clean energy.
Deforestation
The removal of forests for agriculture or development. It increases emissions and reduces carbon storage.
Desertification
Land degradation in dry areas caused by climate and human activities. It reduces productivity and biodiversity.
Disaster risk reduction
Actions taken to prevent or reduce disaster impacts. Climate adaptation often includes risk reduction strategies.
Drought
A prolonged period of low rainfall. Climate change increases drought frequency in many regions.
Ecosystem
A community of living organisms and their environment. Healthy ecosystems support climate regulation.
Ecosystem services
Benefits people receive from nature, such as clean water and food. Climate change can disrupt these services.
Emission factor
A value that estimates emissions from a specific activity. It helps calculate carbon footprints.
Emissions
Greenhouse gases released into the atmosphere. They come from energy, transport, agriculture, and industry.
Energy efficiency
Using less energy to perform the same task. It reduces emissions and costs.
Energy transition
The shift from fossil fuels to cleaner energy sources. It is central to climate mitigation.
Environmental impact
The effect of activities on natural systems. Climate change is a major environmental impact.
Extreme weather
Severe events such as floods, storms, and heatwaves. Their frequency and intensity are rising due to climate change.
Food security
Reliable access to sufficient, safe, and nutritious food. Climate change threatens crop yields and supply chains.
Forest degradation
The reduction in forest quality and health. It lowers the ability of forests to store carbon and support biodiversity.
Forest management
Planning and practices that maintain forest health and productivity. Sustainable management supports climate mitigation and adaptation.
Fossil fuels
Coal, oil, and natural gas formed from ancient organic matter. Burning them releases large amounts of greenhouse gases.
Fugitive emissions
Unintentional gas releases from industrial processes or equipment. Methane leaks from oil and gas systems are a common example.
Global warming
The long term rise in Earth's average temperature. It is mainly caused by greenhouse gas emissions from human activities.
Green economy
An economic model that supports low emissions and environmental sustainability. It promotes efficient use of resources and social inclusion.
Green infrastructure
Natural or nature based systems used to manage environmental challenges. Examples include wetlands for flood control and urban trees for cooling.
Green jobs
Employment that contributes to environmental protection or climate action. They exist in sectors such as renewable energy and conservation.
Greenhouse effect
The process by which gases in the atmosphere trap heat. It keeps the planet warm enough for life but is intensified by emissions.
Greenhouse gases
Gases that trap heat in the atmosphere. Key examples include carbon dioxide, methane, and nitrous oxide.
Heatwave
A prolonged period of unusually high temperatures. Climate change increases their frequency and intensity.
Hydrological cycle
The movement of water through evaporation, condensation, and precipitation. Climate change can alter this cycle.
Hydropower
Energy generated from moving water. It is a renewable source but depends on stable water supplies.
Impact assessment
A process used to evaluate the effects of projects or policies on the environment. It helps guide climate sensitive decisions.
Industrial emissions
Greenhouse gases released from factories and manufacturing. They are a major source of global emissions.
Intergovernmental Panel on Climate Change
An international body that assesses climate science. Its reports inform global climate policy.
International climate agreement
A formal pact between countries to address climate change. These agreements set targets and cooperation mechanisms.
Invasive species
Non native organisms that spread and harm ecosystems. Climate change can make environments more suitable for them.
Joint implementation
A mechanism allowing one country to invest in emission reductions in another. It supports cooperation under climate agreements.
Jurisdictional approach
Climate action planned and implemented across a defined administrative area. It often involves coordination between government levels.
Just transition
A shift to a low carbon economy that is fair to workers and communities. It supports job retraining and social protection.
Key biodiversity area
A site that is critical for the survival of species and ecosystems. Protecting these areas supports climate resilience.
Kilowatt hour
A unit used to measure energy consumption. It helps track energy use and emissions.
Kyoto Protocol
An international treaty that set binding emission reduction targets for developed countries. It laid the groundwork for later global climate agreements.
Land use change
The conversion of land from one purpose to another, such as forest to farmland. It can increase emissions and affect ecosystems.
Leakage
A situation where emission reductions in one area cause increases elsewhere. It can reduce the effectiveness of climate policies.
Low carbon development
Economic growth that minimizes greenhouse gas emissions. It focuses on clean energy and efficient resource use.
Methane
A potent greenhouse gas released from agriculture, waste, and fossil fuel production. It traps more heat than carbon dioxide over a short period.
Mitigation
Actions taken to reduce or prevent greenhouse gas emissions. Examples include renewable energy and energy efficiency.
Monitoring and evaluation
The process of tracking climate actions and their results. It ensures accountability and learning.
National adaptation plan
A strategy developed by countries to manage climate risks. It guides long term adaptation actions.
Nationally determined contribution
A country's pledge to reduce emissions and adapt to climate change. These commitments are submitted under global agreements.
Nature based solutions
Actions that use natural systems to address climate challenges. Examples include restoring forests and wetlands.
Net zero
A state where emissions released are balanced by emissions removed. It aims to stop the increase of greenhouse gases in the atmosphere.
Ocean acidification
The decrease in ocean pH due to absorbed carbon dioxide. It harms marine life and ecosystems.
Offset
A reduction in emissions used to compensate for emissions elsewhere. Offsets often support projects like tree planting or renewable energy.
Ozone layer
A layer in the upper atmosphere that protects life from harmful ultraviolet radiation. It is distinct from the greenhouse effect but linked to environmental protection.
Paris Agreement
An international climate treaty adopted in 2015. It aims to limit global temperature rise and strengthen adaptation efforts.
Permafrost
Ground that remains frozen for long periods. Warming temperatures can release greenhouse gases stored in it.
Physical climate risk
Damage or disruption caused by climate hazards such as floods or heatwaves. It affects infrastructure, economies, and communities.
Pollution
The introduction of harmful substances into the environment. Some pollutants also contribute to climate change.
Renewable energy
Energy from sources that naturally replenish, such as solar or wind. It produces fewer emissions than fossil fuels.
Resilience
The capacity to prepare for, respond to, and recover from climate impacts. Strong systems and planning improve resilience.
Risk assessment
The evaluation of potential climate hazards and their consequences. It supports planning and decision making.
Sea level rise
The increase in ocean levels due to melting ice and warming waters. It threatens coastal areas and infrastructure.
Sustainability
The practice of using resources responsibly to protect the environment. It supports long term ecological balance.
Sustainable development
Development that meets present needs without harming future generations. It balances economic, social, and environmental goals.
Temperature rise
An increase in average global or regional temperatures. It is a key indicator of climate change.
Tipping point
A threshold where small changes can lead to large and often irreversible climate shifts. Examples include ice sheet collapse.
Transition risk
Economic or financial risks linked to shifting toward a low carbon economy. Businesses may face new regulations or market changes.
Transport emissions
Greenhouse gases released from vehicles and transport systems. They are a significant source of global emissions.
Tree cover
The area of land covered by trees. Maintaining tree cover supports carbon storage and ecosystem health.
UN Framework Convention on Climate Change
An international treaty that guides global climate cooperation. It provides the framework for climate negotiations.
Urban heat island
A situation where cities are warmer than surrounding rural areas. Buildings and roads absorb and retain heat.
Urban resilience
The ability of cities to cope with climate impacts. It includes planning, infrastructure, and emergency systems.
Voluntary carbon market
A system where organizations purchase carbon credits to offset emissions. It operates outside mandatory regulatory systems.
Vulnerability
The degree to which people or systems are likely to be harmed by climate impacts. It depends on exposure, sensitivity, and capacity to adapt.
Waste management
The collection, treatment, and disposal of waste. Proper management reduces methane emissions from landfills.
Water scarcity
A shortage of available water resources. Climate change can intensify drought and reduce supply.
Weather
Short term atmospheric conditions such as temperature or rainfall. Climate describes long term patterns of weather.
Wetlands
Land areas saturated with water either permanently or seasonally. They store carbon and protect against floods.
Wind energy
Power generated from wind turbines. It is a renewable and low emission energy source.
Xeriscaping
Landscaping designed to reduce water use. It supports adaptation in dry regions.
Yield variability
Fluctuations in crop production due to changing climate conditions. It affects food security and farmer incomes.
Youth climate action
Climate initiatives led by young people. Youth advocacy plays a growing role in climate policy.
Zero emissions
A state where no greenhouse gases are released. It is a long term goal for many sectors.
Zoning for resilience
Land use planning that reduces climate risk. It guides where development should occur to avoid hazards.