Carbon Sources vs Carbon Sinks: Understanding the Earth’s Carbon Balance
Carbon sources release more carbon into the atmosphere than they absorb, while carbon sinks absorb more carbon than they release. The balance between these…
Topic archive
Carbon Cycle
How carbon moves through atmosphere, biosphere, oceans, and lithosphere.
Why Carbon Budget Estimates Differ
Carbon budget estimates—the amount of CO₂ that can still be emitted while limiting warming to a given temperature target—vary widely because of differences in…
What Is the Remaining Carbon Budget?
The remaining carbon budget is the maximum amount of carbon dioxide (CO₂) that can still be emitted while keeping global warming below a specific…
How Long Does Carbon Dioxide Remain in the Atmosphere?
Carbon dioxide (CO₂) does not have a single atmospheric lifetime. About half of emitted CO₂ is removed within 30 years, but a substantial fraction…
Carbon Removal Permanence: Ensuring Long-Term Climate Benefits
Carbon removal permanence refers to the duration that removed CO2 remains out of the atmosphere. It is a critical factor in evaluating carbon removal…
Why Carbon Dioxide Accumulates in the Atmosphere
Carbon dioxide accumulates in the atmosphere because human activities—primarily burning fossil fuels and deforestation—release CO2 faster than natural sinks like oceans and forests can…
What Is the Biological Carbon Pump? A Deep Dive into the Ocean’s Carbon Cycle
The biological carbon pump is the ocean's natural process of transferring carbon from the surface to the deep sea through the sinking of organic…
Production-Based vs Consumption-Based Emissions: 2022 Data and Trends
In 2022, global production-based CO2 emissions from fossil fuels and industry were 36.1 GtCO2, while consumption-based emissions were identical globally but varied by country…
What Is the Global Carbon Budget?
The global carbon budget is the total amount of carbon dioxide (CO₂) that can be emitted while still limiting global warming to a specific…
Carbon Cycle Explained: Sources, Sinks and Storage
The carbon cycle is the continuous movement of carbon among the atmosphere, oceans, land, and living organisms. Carbon sources release carbon into the atmosphere,…