Some lag associations in Darwin pressure and rainfall

Where a large number of sets of data require to be searched for possible relationships between sets, an association coefficient has some advantages over the more usual correlation method. The uses of the association coefficient in this context are discussed and its relevant statistical properties derived. In an application to monthly pressures and rainfalls at Darwin it is shown, among other thing s, that pressure provides a significant prior index of pressure and, though with less ac curacy; of rainfall. The use of rainfall as a prior index of rainfall does not appear promising.