I'm using the TRMM 3B43 precipitation data. I have downloaded individual NetCDF files depicting yearly accumulation in mm for each year from 2000 to 2015 (16 files). I have imported each file into ArcGIS as a raster file, and each shows a different min & max. I now want to calculate the average annual precipitation from 2000 to 2015. How would you recommend I do this?
The alternative to doing this in the raster calculator is to use the Cell Statistics tool in ArcToolbox. You can select all of your rasters at once and then pick which ever summary statistic you are interested in. It saves a lot of typing!
( "raster_1"+"raster_2"+...+"raster_n" )/n
Where n is the number of rasters.