[gradsusr] Size of x&y axis values, ENSO Index maskout neutral conditions, HADISST (GNUZip)/ERSST (1600 .nc files)

[Andrew Friedman]

Hi Corey,

You should be able to unzip the file using standard utilities. Try reading about gzip here: http://www.gzip.org/

There are ways to recursively download files as you are looking for using wget, but I haven’t done this directly. Once you have different time slice netcdf files, they can be combined using the NCO operator ncrcat:
http://nco.sourceforge.net/nco.html#ncrcat-netCDF-Record-Concatenator

You can also download already-combined ERSST and other gridded datasets from NOAA ESRL: http://www.esrl.noaa.gov/psd/data/gridded/

Andrew


> Question 3: I am attempting to plot observation data as well.  I am trying to use HADISST or ERSST.v3b.  Unfortunately, with the HADISST data, the ncfile s are compressed using GNU zip.  I cannot figure out how to move forward and work with this file (it will not allow me to use ncdump until I manipulate the files).  Is there a way to handle this type of file?
> 
> Alternatively, I am looking at the ERSST files.  (See ftp://ftp.ncdc.noaa.gov/pub/data/cmb/ersst/v3b/netcdf).  Is there a way to open ftp site in file explorer and then quickly recursively download and then combine all of the files?
> 
> Alternatively, ERSST data is available in ASCII, and the files span about 10 years each, and could be more easily combined.  However, I don't know the best way to get GrADS to read that data.  Is there an external utility that might allow me to convert the ASCII to netcdf? 
> 
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