Atlantic Multi-decadal Oscillation (AMO)

The Atlantic Multi-decadal Oscillation (AMO) is a mode of natural variability occurring in the North Atlantic Ocean and which has its principle expression in the sea surface temperature (SST) field. The AMO is identified as a coherent pattern of variability in basin-wide North Atlantic SSTs with a period of 60-80 years.

Below are updated figures for Figures 1-3 (combined on one plot for convenience) and Fig 5 (not yet updated) of the Trenbert & Shea article.

Relevant publications:

  • Trenberth, K.E. and D.J. Shea (2006): Atlantic hurricanes and natural variability in 2005. Geophysical Research Letters 33, L12704, doi:10.1029/2006GL026894 [pdf]
  • Schlesinger, M.E. and Navin Ramankutty (1994): An oscillation in the global climate system of period 65-70 years. Nature, 367, Issue 6465, pp. 723-726, DOI: 10.1038/367723a0


AMO Data

The data used are available in netCDF format. Right click to download the file.

  • AMO_Figs 1-3 contains all the information used to update Figs. 1-3
  • AMO_Fig_5 contains all the information used to update Fig. 5.

For more information, feel free to contact Dennis Shea