Climate tipping points
Topic: Climate Change: Causes, Evidence and the Global Response · NCERT: Beyond NCERT
Meaning
A climate tipping point is a threshold, or limit. Once a part of the climate system crosses it, the system changes suddenly and often cannot return to how it was. The change can then feed on itself even if warming stops. Systems at risk include the Greenland and West Antarctic ice sheets, the Amazon rainforest, permafrost (frozen ground) and the AMOC, a major Atlantic ocean current. Warm-water coral reefs are also at risk. The 2025 Global Tipping Points Report judged that coral reefs have likely already crossed their tipping point (verify current). Tipping points are a key reason why urgent climate action is needed.
Example
In the Amazon rainforest of South America, too much warming and forest loss could stop the forest from making enough of its own rain. Large parts could then dry out and turn into grassland, and this change may be impossible to undo.
Don't confuse with
- Gradual warming: average temperature rises slowly and steadily. A tipping point is a sudden jump that is often permanent.
Related concepts
- Global warming
- Global temperature record
- Sea level rise
- Arctic amplification
- Glacier retreat in the Himalaya