Carbon Climate Feedback
Carbon Climate Feedback - Related Videos
04:34
Climate Change - Concepts
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2019
The certainty of climate change remains a public controversy despite the consensus among approximately 97% of active climate researchers, who not only agree that the Earth’s climate is changing but also state that this change is intensified by human activity, predominantly carbon emissions 1. The disconnect between the public and the experts is partly due to poor understanding of the mechanisms involved in climate change as well as the differences among essential concepts such as weather and...
08:14
Climate Change - Student Protocol
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2019
Melting Land and Sea Ice ExpandNOTE: This activity is a simulation of land- and sea-ice melting and their effects on water levels. First, label one graduated cylinder as 'Sea Ice' and the other graduated cylinder as 'Land Ice.' Hypotheses: the experimental hypothesis might be that the land ice melting will cause the water level to rise more than the melting sea ice. The null hypothesis would be that there will be no difference in the change in water level between the two containers. Add 10 ice...
01:50
Global Climate Change
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2019
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past. Past Periods of Warming and Cooling In the last...
00:46
Feedback Inhibition
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2019
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell! Since enzymes help control the rate of reactions, their activity is regulated so that appropriate amounts of starting materials, intermediate metabolites, and products are maintained in the cell. Excessive build-up or depletion of...
01:16
What is Climate?
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2025
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water. Weather and Climate Weather and climate are related, though they differ in terms of time scale and predictability. Weather refers to the state of the atmosphere at a specific time and place, whereas climate encompasses...
FAQs
Heat and drought stress can reduce the ability of land ecosystems to absorb and retain carbon. At the same time, warming can accelerate microbial decomposition, which returns stored carbon to the atmosphere. These opposing changes matter because reduced uptake and faster release can shift terrestrial systems from partially offsetting emissions toward amplifying atmospheric greenhouse-gas concentrations.
Warmer oceans generally hold less dissolved carbon dioxide, reducing the ocean’s capacity to absorb this greenhouse gas from the atmosphere. This response is important because ocean uptake is one part of the broader carbon cycle. If that uptake weakens as temperatures rise, more carbon dioxide can remain in the atmosphere and contribute to additional climate warming.
Warming can accelerate microbial decomposition and promote permafrost thaw, processes that can release carbon dioxide and methane. The release of these greenhouse gases can amplify climate change by adding atmospheric warming agents. Their importance lies in the potential to convert carbon that was previously stored in soils or frozen ground into emissions under warmer conditions.
Earth-system models incorporate changes in land and ocean carbon uptake, microbial decomposition, permafrost thaw, and possible greenhouse-gas releases when projecting climate conditions. They may also account for enhanced plant growth and CO2 fertilization as temporary offsets. Representing both amplifying and moderating responses helps models inform climate projections and estimates of remaining carbon budgets.
Monitoring can show whether ecosystems and oceans continue absorbing carbon or whether warming-related stress is reducing that uptake. Observations of these responses help researchers evaluate how land and ocean systems are changing within the carbon cycle. The resulting evidence supports climate projections, carbon-budget assessments, and evaluation of how closely Earth-system models reflect environmental change.
Carbon-climate feedbacks matter for emissions policy because natural carbon uptake may not remain constant as the climate warms. Heat, drought, decomposition, permafrost thaw, and reduced ocean uptake can increase atmospheric greenhouse gases, while plant growth and CO2 fertilization may provide only temporary compensation. Accounting for these responses improves interpretation of carbon budgets and the consequences of emissions decisions.