Temporal correlation map at each grid point

Hi, I wanted to compute for a point by point correlation map for a time series data of two variables (v1, v2) and end up with a 2-dimensional spatial map that will contain a correlation coefficient for each grid point. I have stored the data for each variable such that the rows correspond to the observations at each grid point and columns correspond for each time period. I have attached a sample map.Any help or suggestion on how to go through this is greatly appreciated. Many thanks.