Fig. 2: The Standardize Precipitaion Index. | Communications Earth & Environment

Fig. 2: The Standardize Precipitaion Index.

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

Fig. 2

The Standardized Precipitation Index series with a decadal filter from 1989 to 2015, calculated with land-only precipitation from the GPCP dataset74. Orange for negative and green for positive precipitation anomalies. NEB region on the top and WAF region on the bottom. The dashed line indicates the +1 and −1 SPI limits for wet and dry conditions. The correlation between the two curves is −0.82 (p < 0.05) from 1980 to 2005.

Back to article page