CLI_reorder.md

+# Reorder Longitudes
+
+Reorders the longitude dimension in a NetCDF file, converting values from [0, 360] to [-180, 180] and shifting data accordingly.
+
+## Syntax
+
+```bash
+nes reorder -f <input_file.nc> -o <output_file.nc>
+```
+
+## Arguments
+
+- `-f`, `--file` (**required**): Path to the input NetCDF file.
+- `-o`, `--output`: Path to the output NetCDF file. If omitted, the input file is not modified in-place.
+
+## Example
+
+```bash
+nes reorder -f emissions_360.nc -o emissions_180.nc
+```