other:esgf:misc
ESGF related notes
Extracting a region from a variable
Requirements:
- data available on disk (possibly split along the time axis), e.g. on the
ciclad
server nco
installed (ncks
,ncrcat
)tcsh
shell, in order to useforeach
$ cd /prodigfs/esgf/mirror/CMIP5/output1/IPSL/IPSL-CM5A-LR/past1000/mon/atmos/Amon/r1i1p1/v20120804/ $ ls -lh pr/pr_*.nc 85M Aug 2 2012 pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_085001-104912.nc 85M Aug 2 2012 pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_105001-124912.nc 85M Aug 2 2012 pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_125001-144912.nc 85M Aug 2 2012 pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_145001-164912.nc 85M Aug 2 2012 pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_165001-184912.nc 446K Aug 2 2012 pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_185001-185012.nc $ mkdir -p /data/jypmce/Scratch/EasterIsland/Tmp/pr $ foreach f ( pr/pr_*.nc ) foreach? echo $f foreach? ncks -dlat,-35.,-20. -dlon,242.,258. $f /data/jypmce/Scratch/EasterIsland/Tmp/$f:r-Z02.nc foreach? end pr/pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_085001-104912.nc pr/pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_105001-124912.nc pr/pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_125001-144912.nc pr/pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_145001-164912.nc pr/pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_165001-184912.nc pr/pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_185001-185012.nc $ cd /data/jypmce/Scratch/EasterIsland/Tmp/pr $ ls -lh pr_*Z02.nc 328K Sep 9 11:25 pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_085001-104912-Z02.nc 328K Sep 9 11:25 pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_105001-124912-Z02.nc 328K Sep 9 11:25 pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_125001-144912-Z02.nc 328K Sep 9 11:25 pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_145001-164912-Z02.nc 328K Sep 9 11:25 pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_165001-184912-Z02.nc 11K Sep 9 11:25 pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_185001-185012-Z02.nc $ ncrcat pr_*Z02.nc pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_085001-184912-Z02.nc $ ll -h pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_085001-184912-Z02.nc 1.6M Sep 9 11:46 pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_085001-184912-Z02.nc $ ncdump -vlat,lon pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_085001-184912-Z02.nc netcdf pr_Amon_IPSL-CM5A-LR_past1000_r1i1p1_085001-184912-Z02 { dimensions: lat = 7 ; bnds = 2 ; lon = 4 ; time = UNLIMITED ; // (12012 currently) [...] data: lat = -33.1578941345215, -31.2631587982178, -29.3684215545654, -27.4736843109131, -25.5789470672607, -23.6842098236084, -21.7894744873047 ; lon = 243.75, 247.5, 251.25, 255 ; }
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other/esgf/misc.txt · Last modified: 2016/09/20 16:35 by jypeter