Inconsistent values converting from NETCDF

PeteM — Thu, 30 Jan 2025 16:17:37 GMT

I have a netcdf file (LOCA2 data) containing temperature values stored in the variable tasmax_tavg. Using the "Make Multidimensional Raster" in ArcGIS Pro 2.9.9 I get one set of stats, when using "Copy Raster" to crf I get different stat values. When I do the same process in 3.4.0 I get a whole new set of different values. When I run python xarray to get stats, I get values similar to 2.9.9 Copy Raster but not the same.

My environmental variables are WGS84, no resampling, no compression, no pyramids, calculate statistics.

I'm not sure what to try next. The balance of the analysis relies upon these transformations being consistent.

I'm willing to share data if someone wishes to corroborate my findings.

Below are the stat values for each of the processes:

ArcGISPro 2.9.9	Min	Max	Mean	StDev
Copy Raster	257.16729736	324.49603271	294.33952381	10.98436202
Make Multi	272.35498047	306.82998657	290.69200234	6.78096632

ArcGIS Pro 3.4.0
Copy Raster	271.18478394	312.28817749	293.33416138	6.88249549
Make Multi	272.35498047	306.82998657	290.69200234	6.78096632

Python xarray	257.16729736	324.49603271	294.33895874	10.98434544

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Inconsistent values converting from NETCDF