Plot - Table I - Table II - Table III

Northern South America - ENSO Impacts

 
Plot - Table I - Table II - Table III

El Niño Impacts: Rainfall Anomalies

Table 1: Northern South America (5S-15N; 75W-35W)

Year

(Jul-Mar)

NINO3 SSTa

(°C)

Rainfall Anom.

(cm/month)

1897

1.06

-5.34

1900

0.86

-3.81

1903

1.00

-4.11

1906

1.08

-2.28

1912

0.60

-5.34

1915

1.34

-2.94

1919

1.26

-2.55

1920

0.57

-0.93

1926

0.79

-1.53

1931

1.17

-1.41

1941

0.80

0.33

1942

0.65

-0.84

1958

0.85

-2.34

1966

0.91

-0.78

1970

0.61

0.18

1973

1.30

-0.57

1977

0.70

-0.45

1983

1.66

-1.83

1987

0.75

1.32

1988

1.02

0.09

 

El Niño years with below average rain = 80%

El Niño years with rainfall in driest tercile = 70%

 

IRI

 nsam_table.la  
Plot - Table I - Table II - Table III

La Niña Impacts: Rainfall Anomalies

Table 2: Northern South America (5S-15N; 75W-35W)

Year

(Jul-Mar)

NINO3 SSTa

(°C)

Rainfall Anom.

(cm/month)

1904

-0.65

-1.35

1909

-0.77

0.12

1910

-0.83

0.30

1911

-0.72

0.78

1917

-0.81

1.20

1918

-0.86

1.17

1925

-0.69

1.98

1934

-0.66

1.86

1939

-0.90

1.53

1943

-1.08

1.08

1950

-0.88

1.98

1955

-0.63

2.46

1956

-0.82

2.37

1965

-0.61

0.39

1968

-0.71

-0.36

1971

-1.18

2.04

1972

-0.58

1.53

1974

-1.01

3.00

1976

-0.95

2.70

1989

-0.72

4.44

 

La Niña years with above average rain = 90%

La Niña years with rainfall in wettest tercile = 75%

 

IRI

 nsam_table.non  
Plot - Table I - Table II - Table III

Non-ENSO Impacts: Rainfall Anomalies

Table 3: Northern South America (5S-15N; 75W-35W)

Year

(Jul-Mar)

NINO3 SSTa

(°C)

Rainfall Anom.

(cm/month)

1902

0.01

0.60

1908

-0.10

-2.67

1913

-0.15

1.23

1928

-0.08

3.09

1929

-0.17

0.27

1933

-0.04

-0.36

1935

-0.20

0.75

1936

0.07

-0.57

1937

0.04

-1.35

1944

-0.16

0.21

1946

-0.16

0.69

1948

-0.13

0.93

1953

-0.06

1.41

1960

-0.11

-0.03

1961

-0.12

1.11

1967

-0.20

2.07

1979

-0.18

0.66

1981

-0.16

-0.33

1982

-0.08

0.90

1990

-0.04

0.84

 

Non-ENSO years with below average rain = 30%

Non-ENSO years with rainfall in driest tercile = 15%

 

Non-ENSO years with above average rain = 70%

Non-ENSO years with rainfall in wettest tercile = 35%

 

IRI
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