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A feedback that amplifies an initial change is called a positive feedback [12] while a feedback that reduces an initial change is called a negative feedback. [12] Climate change feedbacks are in the context of global warming, so positive feedbacks enhance warming and negative feedbacks diminish it.
[4] [5] [6] Observations and climate model results now provide high confidence that the overall cloud feedback on climate change is positive. [7]: 95 However, some cloud types are more difficult to observe, and so climate models have less data about them and make different estimates about their role.
Positive climate change feedbacks amplify changes in the climate system, and can lead to destabilizing effects for the climate. [2] An increase in temperature from greenhouse gases leading to increased water vapor (which is itself a greenhouse gas) causing further warming is a positive feedback, but not a runaway effect, on Earth. [13]
A consequence of global warming, feedback loops are already making a huge problem that much worse. 'It's already begun': Feedback loops will make climate change even worse, scientists say [Video ...
Positive feedback (exacerbating feedback, self-reinforcing feedback) is a process that occurs in a feedback loop which exacerbates the effects of a small disturbance. That is, the effects of a perturbation on a system include an increase in the magnitude of the perturbation. [ 1 ]
A positive feedback loop speeds up a process. Meadows indicates that in most cases, it is preferable to slow down a positive loop, rather than speeding up a negative one. The eutrophication of a lake is a typical feedback loop that goes wild. In a eutrophic lake (which means well-nourished), much life, including fish, can be supported.
Version 8: Misc changes motivated by discussion at Talk:Climate change feedback at en.WP: 06:09, 21 July 2023: 1,650 × 1,150 (4 KB) RCraig09: Version 7: remove extraneous character ∂: 06:03, 21 July 2023: 1,650 × 1,150 (4 KB) RCraig09: Version 6: removing "clouds" from positive feedback side . . . other wording adjustments on positive ...
Some editions of the book have a different, less optimistic subtitle: Earth's Climate Crisis and the Fate of Humanity. The book introduces the concept of the anti-CLAW hypothesis. Lovelock proposed that instead of providing negative feedback in the climate system, the components of the CLAW hypothesis may act to create a positive feedback loop. [1]