After extrapolation, the time coordinate disappeared from the file.

[KHAN1]

Continuing the discussion from How can extrapolate data from 10 to 50 meters using the NetCDF file in R software?:

How can extrapolate data from 10 to 50 meters using the NetCDF file in R software?

HI @KHAN1 Since you also wanted to be able to write out back to a netcdf file, I found that the terra package did a better job without creating bands in the wrong order when I saved to a netcdf file (at least when I looked at the file in the panoply app.) library("terra") u10 <- rast("~/Downloads/ERA5_monthlyWindSpeed.nc", drivers = "NETCDF") #https://en.wikipedia.org/wiki/Wind_profile_power_law u_calc <- function(ur, zr, z, a = 0.143) { ur * ((z / zr) ^ a) } # Calculate windspeed at height z = 50 u50 <- u_calc(u10, zr = 10, z = 50) writeCDF(u50, filename = "~/Downloads/u50.nc", varname = "sfcWind", unit = "m/s", zname = "time", prec = "float")

Hello dear scientist @jrmuirhead
I am facing a problem after my data converted to 100m from 10m that is "Time coordinate"
The time coordinate is disappeared from the file.
Could you please help how to fix it

based on my understanding I tried it but could not succeed
Both files are attached in the following link (the original file is 10m and after extrapolating file is 100m)

https://drive.google.com/drive/folders/1FHfw0btsQRuQjHVUJxxcRjm7kj8c23ZS?usp=sharing

Could you please show me the directions?
Thank you, dear scientist