can anyone explain to how to implement the following method: 

Using ncks, TRMM data can be downloaded with one NetCDF file, for example,

ncks -O --mk_rec_dmn time -v r -d time,0,5 -d lon,236.,294. -d lat,23.0,49.0 http://disc2.nascom.nasa.gov:80/dods/3B42_V7_daily outfile_trmm.nc

or,

The chunking *along time* would be done, i.e.:

ncks -O --mk_rec_dmn time -v r -d time,0,5 -d lon,236.,294. -d lat,23.0,49.0

http://disc2.nascom.nasa.gov:80/dods/3B42_V7_daily trmm1.nc

ncks -O --mk_rec_dmn time -v r -d time,6,10 -d lon,236.,294. -d lat,23.0,49.0

http://disc2.nascom.nasa.gov:80/dods/3B42_V7_daily trmm2.nc

ncrcat trmm1.nc trmm2.nc out.nc

ncks can be downloaded from, http://nco.sourceforge.net/

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