timcor monthy correlation
Added by Dayane Padoan over 3 years ago
Dear all,
I am trying to find time correlation between two data sets using CDO (timcor).
Both datasets contain precipitation monthly data through 124 years. If I use the whole datasets, with data from january to december of each year, I get a nice correlation as response.
However, if I split the datasets by month and calculate the time correlation over each month (e.g. over all januarys), it results in bad correlation.
Since I'm just selecting a group of values from the original datasets, shouldn't it give me a better correlation response? What could have been wrong?
Thank you very much for your help!
Replies (1)
RE: timcor monthy correlation - Added by Brendan DeTracey over 3 years ago
That question is beyond the scope of this forum. However, in the first case you are seeing a correlation in the month to month changes i.e. intra-annual variation. In the second you are finding little correlation between years of the same month i.e. interannual variation.