# Keeling curve

> graph of the accumulation of CO2 in the Earth's atmosphere in Hawaii since 1958

**Wikidata**: [Q224858](https://www.wikidata.org/wiki/Q224858)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Keeling_Curve)  
**Source**: https://4ort.xyz/entity/keeling-curve


## References

1. Freebase Data Dumps. 2013