I used to work with UDEL grid estimate (look here) data where station values of monthly total raingage-measured precipitation (P) were interpolated to a
0.5 degree by 0.5 degree latitude/longitude grid, where the grid nodes are centered on the 0.25 degree. However, after I tried to interpolate those data with Germany
NUTS3 district only, and I got a poor match because I need to calculate population weighted yearly average for each Germany
NUTS3 polygon but some polygon lost population data which affect my expected output. Now I realized that chosen grid estimate data is not precise enough which caused this problem.
I used to work with UDEL grid estimated data with
0.5x0.5 degree resolution (http://climate.geog.udel.edu/~climate/), but it is not ideal for my research. I used also DWD station level data (DWD station level data link), but this dataset also won't fit my expectation.Now I am looking for a grid climate data (Temperature/precipitation data) with the better resolution.
Now I am looking for the grid climate data with better resolution, where
0.25x0.25 degree grid data of global climate (land surface temperature/precipitation) are desired. Where can I find free open source grid climate data that meet my specification? Anyone know a possible source where I can download such data? Possible help would be appreciated.