cdo | A simple php router. | Router library

We usually use 'cdo seltimestep' to select the days we want to extract from a netcdf file into an output file that includes only the days we specified.

I have 5 directories in the same path my_path/:

I have a netcdf file with global temperature (tas, degC) data over the 1990-2001 period at daily time-steps in a 1x1deg lat-lon grid.

I am interested only in tas days > 10degC.

Is there a way I can subset with CDO the netcdf file and create a new one with only tas days > 10degC?

The gtc operator can be related to my issue but it only creates a mask with 0s and 1s, while I need true values >10degC.

I am trying to calculate fsa variable values based on two discrete conditions. In the end, I want one output file with variable fsa. The first condition is fsa equals 1 when tas is greater than 275.15. In the second condition, I want fsa to be equal to (1-0.5*( tas -273.15)) when tas is between 273.15 and 275.15. Here is my first try using expr, any help is appreciated. any approach will be ok it doesn't have to be expr. my file size is big so a concise method is preferred.

I have a netcdf file that has monthly global data from 1991 to 2000 (10 years).

Using CDO, how can I modify the netcdf from monthly to daily timesteps by repeating the monthly values each day of each month?

for eaxample,

Managed to get this sending using Excel with SMTP.

When sending one e-mail at a time, the first one has the signature displayed where it should be.
Second e-mail sent has the signature but adds the signature as an attachment.
Third e-mail sent has the signature but adds the signature as an attachment twice, and it will repeat the the cycle adding more signature images as attachments.

TLDR:

• 1 e-mail sent = 0 attachment
• 2 e-mails sent = 1 attachment
• 3 e-mails sent = 2 attachments

I don't want any attached files.

I have come across the code

cdo -outputtab, date,value -remapnn,lon=X/lat=Y infile.nc > Outfile.txt

which very nicely extracts for a single point only. Is there any way I can extract time series data from netcdf file for multiple points using a single command line or by using some script and get the output in a single text file? Something like this -

lat-lon1, lat-lon2, lat-lon3

235, 256, 254

264, 246, 249

289, 278, 259

......

I have two NC files with ERA5land precipitation data from the months AMJJASO of 2001-2020. One NC file of precipitation data from UTC 00.00 and one NC file with precipitation data from UTC 12.00. I would like to subtract the precipitation from UTC 00.00 from the precipitation at timeslot 12.00, hence;

UTC12.00 - UTC00.00 = UTCprecip

I have previously used cdo as

How can I merge only specific .nc files to work with cdo? from a long list of files that look like this:

var_1-2.nc

var_3-4.nc

var_5-6.nc

.

.

var_99-100.nc

I would like to to a cdo mergetime only to the last e.g 10 files Anyone could help me with the syntax here?