I have downloaded GLDAS-1 (3-hourly Noah 0.25 data) for the year 2013. As the data is at 3 hour time step I got 365*8=2920 files. When I used merge command in CDO to merge all these files into a single time series it failed citing "Too many open files" in reason. To overcome this problem I tried to merge all these files by separating them into three sets and subsequently merging into one single time series, but the final time series is giving variable only on 2661 time steps which should have been on 2920 time steps.
Can any one tell me how to resolve this error ?
Did u try the merging with "mergetime" , if u want to generate a timeseries, its better to use "mergetime"
I tried with mergetime but it too ended up in error
cdo mergetime $(ls *.grb) 1.grb
cdo mergetime (Abort): Input streams have different number of variables per timestep!
Hi,
Did you use SSW for subsetting your region. If you do so, you should not have any problem.
Otherwise, you can download merged file using he following command from OpenDAP site.
ncks -4 -d time,time1,time2 -d lon,lon1,lon2-d lat,lat1,lat2 -v listofvariableshere http://hydro1.sci.gsfc.nasa.gov:80/dods/GLDAS_NOAH025_3H.020 output.nc
You just open file using sdfopen in grads and look for time period and name of variables you need. Substitute those as you require.
PS: make sure you already installed NCO in your machine.
Regards,
Kishore
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