ncl_wind: Wind transformation

In rcdo: Wrapper of 'CDO' Operators

Wind transformation

Description

This module contains CDO operators with an interface to NCL functions. The corresponding NCL functions have the same name. A more detailed description of those NCL function can be found on the NCL homepage https://www.ncl.ucar.edu.

Usage

cdo_uv2dv_cfd(
  ifile,
  u = NULL,
  v = NULL,
  boundOpt = NULL,
  outMode = NULL,
  ofile = NULL
)

cdo_uv2vr_cfd(
  ifile,
  u = NULL,
  v = NULL,
  boundOpt = NULL,
  outMode = NULL,
  ofile = NULL
)

Arguments

ifile	String with the path to the input file.
u	STRING - Name of variable u (default: u)
v	STRING - Name of variable v (default: v)
boundOpt	INTEGER - Boundary condition option (0-3) (default: 0/1 for cyclic grids)
outMode	STRING - Output mode new/append (default: new)
ofile	String with the path to the output file.

Details

uv2vr_cfd  U and V wind to relative vorticity
           Computes relative vorticity for a latitude-longitude grid using centered finite differences.
           The grid need not be global and missing values are allowed.
uv2dv_cfd  U and V wind to divergence
           Computes divergence for a latitude-longitude grid using centered finite differences.
           The grid need not be global and missing values are allowed.

Value

Operators that output one or more files return a character vector to the output files.

Operators that output an indefinite number of files return a string with the basename of the files.

Operatos that don't return filenames return a character vector with the string output.

rcdo documentation built on June 8, 2025, 12:36 p.m.