Added by Abubakar Bello over 2 years ago
I want to calculate seasonal anomalies for geopotential height (JFM,OND and DJF). The DJF should span two different years.
Below is my approach and the years of interest are 1089,1996,2003 and 2015
Here are my steps for JFM
cdo yearmean -selmon,1,2,3 geo79-2020.nc 123yearmean.nc
cdo timmean 123yearmean.nc Tmean.nc
cdo -b 64 sub 123yearmean.nc Tmean.nc ano123.nc
To extract the years I did use
cdo selyear.2015 ano123.nc ano123.15.nc
cdo selyear.2003 ano123.nc ano123.03.nc
cdo selyear.1996 ano123.nc ano123.96.nc
cdo selyear.1989 ano123.nc ano123.89.nc
Are these steps the right way?
The outputs when plotted in Grads are off the grids