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--- aerocom:faq-reformatting [2014-12-19 12:09:58]
michaels
+++ aerocom:faq-reformatting [2019-04-23 11:48:35]
jang added cdo splitname command
@@ Line 1: / Line 1: @@
 ====== Reformatting files to AeroCom/HTAP standards ======
+**Note: these commands cover the elder phase 3 naming scheme, but should nevertheless still usefull**
+The AeroCom standard is described in the section "submitting to the AeroCom database".\\
+https://wiki.met.no/aerocom/data_submission
+Below simple nco commands are listed which can be of help to reformat.
+A public set of format correction tools is under development and can be accessed here:\\
+https://github.com/metno/aerocom-data-correction-tools
 ===== How to remind me of nco commands =====
@@ Line 11: / Line 21: @@
 ===== Split files per variable  =====
-https://code.zmaw.de/projects/cdo/embedded/1.6.4/cdo.html#x1-880002.2.6
+	 cdo splitname in.nc
@@ Line 26: / Line 36: @@
 	 ncks -F -A -v AERH2O_AER dummy.nc ${file}
-===== concatenate variable =====
+===== add variable to file =====
 	 ncks -F -A -v AIRE temp.nc ${file}
-===== transpose axis =====
+===== make the time dimension unlimited =====
 	 ncecat -O $file $file
 	 ncpdq -O -a time,record $file $file
@@ Line 45: / Line 55: @@
 ===== calculate yearly average =====
  fom 12 files each containing 1 month
-	 ncra -F -O  modis_2000??.nc ${filer}
+	 ncra -F -O  modis_2000??.nc ${yearfile}
 ===== create record dimension =====
 	 ncecat -O $file $file
-===== make x unlimited =====
+===== delete useless record dimension =====
-	 ncpdq -O -a x,record $file $file
-===== delete empty record =====
 	 ncwa -O -a record $file $file
-===== correct axis =====
+===== turn lat to have right order =====
+ with interpolated files
+	 ncpdq -O -a "-y" $file $file
+===== Shift left and right hemispheres =====
 	 file1=aire_1.nc
 	 ncks -h -F -O -d x,1,180 $file $file1
 	 file2=aire_2.nc
 	 ncks -h -F -O -d x,181,360 $file $file2
@@ Line 69: / Line 77: @@
 	\rm  $file1 $file2
-===== turn lat to be consistent =====
- with interpolated files
-	 ncpdq -O -a "-y" $file $file
-===== reorder longitude =====
+===== Similar reorder of longitude =====
 	ncecat -O $file $file
 	ncpdq -O -a x,record $file $file
@@ Line 91: / Line 95: @@
 	ncpdq -O -a time,y,x $file $file
-===== identify missing values =====
+===== missing values =====
 	ncatted -O -a missing_value,$var,o,f,0 ${file}
 	ncatted -O -a missing_value,$var,o,f,-9999 ${file}
-actually better use attribute _FillValue
+actually better use attribute _FillValue (see http://nco.sourceforge.net)
@@ Line 106: / Line 110: @@
     done
-===== concatenate monthly mean files =====
-    monthfile=DD_${model}.an${AN}.mALLYEAR_m.nc
-    ncrcat -F -O DD_${model}.an${AN}.m??_m.nc ${monthfile}
-===== calculate yearly mean file =====
-    orgfile=DD_${model}.an${AN}.mALLYEAR_an.nc
-    ncra -F -O ${monthfile} ${orgfile}
 ===== delete attributes =====
@@ Line 119: / Line 115: @@
     ncatted -h -a ,global,d,, interdummy.nc
     ncatted -h -a missing_value,,d,, interdummy.nc