CDO scripts

Collection of scripts offering a convenient way to process multiple netCDF files with the Climate Data Operators (CDO) tool.

Requirements

Climate Data Operators (CDO) tool is required, which can be installed with:

sudo apt install cdo

Scripts tested with CDO version 2.0.4-1 on Ubuntu 22.04.

Documentation

See the documentation for more details on the available scripts.

Main scripts

The main scripts are:

• The get_anom.sh script is used to obtain anomalies for multiple netCDF files.

• The get_eofs.sh script is used to obtain ensemble Empirical Orthogonal Functions (EOFs) from multiple netCDF files.

• The get_pcs.sh script is used to calculate Principal Components (PCs) for multiple netCDF files.

Script combinations

Further scripts provide a combination of the main scripts:

• The prepare_data.sh script performs three main steps: creating anomalies, calculating ensemble EOFs, and obtaining individual PCs.

• The prepare_data2.sh script performs two main steps: creating anomalies and obtaining individual PCs. In contrast to the script prepare_data.sh, the EOFs are not calculated from the netCDF files in the given folder, but provided as an additional argument to the script.

Additional scripts

Additional scripts are:

• The merge.sh script is used to merge netCDF files in time with the same filename prefix in a specified directory.