Atlantic Multi-decadal Oscillation (Q313)

Subject, term, tag: Atlantic Multi-decadal Oscillation

Atlantic Multi-decadal Oscillation (AMO)

Language	Label	Description	Also known as
English	Atlantic Multi-decadal Oscillation	Subject, term, tag: Atlantic Multi-decadal Oscillation	Atlantic Multi-decadal Oscillation (AMO)

Statements

Instance of

Category

source version

IPCC Glossary v1.5

1 reference

Source

https://apps.ipcc.ch/glossary/

date accessed

27 May 2026

Part of

Working Group I: Climate Change 2021 – The Physical Science Basis

0 references

Definition

A multi-decadal (65- to 75-year) fluctuation in the North Atlantic, in which sea surface temperatures showed warm phases during roughly 1860 to 1880 and 1930 to 1960 and cool phases during 1905 to 1925 and 1970 to 1990 with a range of approximately 0.4°C. See AMO Index in WGI AR5 Box 2.5. (English)