Some precipitation Patterns that affect agricultural Practices in the Plains of Buenos Aires

ALFREDO LUIS ROLLA;  MARCELA HEBE GONZÁLEZ

Agricultural Research Updates

Nova Science Publisher

Año: 2017; p. 209 - 239

The Buenos Aires plain in central-east Argentina generates economic resources based on agriculture, which is strongly influenced by precipitation. In this work different rainfall interannual variability factors were studied using monthly precipitation in 22 stations for the period 1950-2012. They showed that rely heavily on the area and the season. El Niño, El Niño Modoki, the positive phase of the Indian Ocean Dipole and the shift to the south of the South Atlantic High are related to an increase of spring precipitation in central Buenos Aires. The weakening of westerlies associated with the negative phase of Antarctic Oscillation and the weakening of South Atlantic High favor the autumn precipitation in the east of the province. The positive phase of Antarctic Oscillation and the intensification of South Atlantic High is associated with increased winter precipitation in central and northwest of Buenos Aires.