Interrelationships between Indian and northern Australian summer monsoon rainfall values

Relationships between both the Indian summer monsoon rainfall and the northern Australian summer monsoon rainfall and the Southern Oscillation have been studied previously, and Indian conditions related to Darwin pressure trends, but relationships between the rainfall conditions of the two areas have not been studied. This was effected in terms of generalized regional rainfall values for June‐September for 10 Indian regions and December‐March for four Australian regions. Preceding Australian conditions had virtually no significant correlation with succeeding Indian conditions, but these Indian conditions did show significant correlations with many succeeding Australian regional values. These were examined in terms of simple correlation, quintile tabulation, and multiple correlation and regression, and the more significant relationships were extended further by considering generalized sea‐surface temperature conditions as well. Resultant relationships were evaluated in terms of the 10 years that follow the period of analysis.