平均一个月的 NetCDF 数据到一天 24 小时

Question

I hope you're well --

I have multiple files all having one month of hourly data.

Wind = Jun1.variables['wind'][:,:,:]
Wind = Jun2.variables['winds'][:,:,:]
etc

Below shows the dimensions

I want to average each individual files in a way to calculate the hourly average to get the diurnal cycle for each month with array shape (time, lon, lat) of:

Answer 1

If I understand your question correctly, you want to compute the mean diurnal cycle from a month of hourly data. NCO's ncra does this with a feature called "interleaving":

ncra -d time,,,,720,24 in.nc out.nc

Answer 2

If Charlie's interpretation is correct (I think it is from your desired array shape) then you can work out the diurnal cycle over a multi day period with CDO using

cdo dhourmean in.nc out.nc 

I think you need to make sure you have a recent version of cdo for this. v1.9.5 should be okay.