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…
Topic archive
Earth System Climate
Understanding the interconnected components and processes that shape Earth’s climate.
Ocean Acidification vs Ocean Warming: Understanding Two Major Climate-Driven Threats to the Sea
Ocean acidification and ocean warming are two distinct but interconnected consequences of rising atmospheric carbon dioxide. Acidification refers to the ongoing decrease in seawater…
Remote Sensing vs Ground-Based Measurements: Comparing Global Temperature Trends
The difference between surface-based and satellite-derived global temperature trends for 1979–2023 is approximately 0.05°C per decade, with surface records showing a trend of 0.18°C/decade…
Amazon Rainforest Dieback: Evidence, Risks and Uncertainty
Amazon rainforest dieback refers to the hypothesis that a large-scale, self-reinforcing shift from rainforest to savanna or degraded forest could occur in the Amazon…
How Nutrient Pollution Creates Coastal Dead Zones
Coastal dead zones are areas of water with extremely low oxygen levels (hypoxia) caused by excessive nutrient pollution, primarily nitrogen and phosphorus from human…
Hypoxia vs Anoxia in Aquatic Ecosystems: Definitions, Causes, and Consequences
Hypoxia and anoxia are conditions of low and zero dissolved oxygen, respectively, in water bodies. They occur when oxygen consumption by biological and chemical…
Deoxygenation: Why the Ocean Is Losing Oxygen
Ocean deoxygenation is the decline in dissolved oxygen levels in the world's oceans, driven primarily by rising water temperatures and nutrient pollution. Warmer water…
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…
Why Arctic Sea Ice Loss Does Not Directly Raise Sea Level
Arctic sea ice loss does not directly raise sea level because floating ice already displaces its own weight in water, following Archimedes' principle. The…