Table 1 Description of the SOM patterns.

From: A 50-year cycle of sea surface temperature regulates decadal precipitation in the tropical and South Atlantic region

SOM Pattern

Period

Precipitation anti-correlation

Atlantic modes

ITCZ displacement

0

1980–1985

(Strong)

SASD+, AMM+, AEM-

Southward

1

1985–1990

(Strong)

SASD−, AMM−

Southward

2

1990–1995

(Strong)

AMM-, AEM−

Southward

3

1995–2000

(Strong)

AEM+

Northward

4

2000–2005

(Strong)

AMM+, AEM+

Northward

5

2005–2012

(Weak)

AMM+, AEM+

Northward

6

2012–2015

(Weak)

SASD+, AMM+

Northward

  1. From top to bottom: SOM patterns 0 through 6. From left to right: SOM pattern number, the period of correlation between the pattern and the Atlantic Ocean data, NEB and WAF decadal precipitation anti-correlation, active Atlantic modes of variability, and ITCZ displacement.