I’m sharing this in case it hasn’t been noticed yet, and to check whether anyone else has encountered this issue or if it’s specific to my analysis region (Humboldt). I’ve noticed that the specific humidity (Q) field, when downloaded from raw ERA5, is inverted. As a result, when generating the associated bulk file, the relative humidity (rhum) variable is also upside down. This can be easily fixed by adding the line shum = flipud(shum); in the interp_ERA5.m script.
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