div {meteoEVT} | R Documentation |
divergence
Description
Calculates the divergence of a vector field
Usage
div(
fld,
lat = NULL,
d = 3,
system = "p",
rho = NULL,
dx = 0.25,
dy = 0.25,
plev = 5000,
mode = "lonlat"
)
Arguments
fld |
field with dimensions (lon,lat,p,d) |
lat |
vector containing latitude (only for |
d |
scalar for dimension (use d=2 for horizontal gradient and d=3 for 3d-gradient) |
system |
for type of coordinate system (use 'p' for pressure system and 'z' for height system) |
rho |
field with dimensions (lon,lat,p) for density or a scalar rho (for constant density) |
dx |
x resolution in the corresponding unit (e.g. 0.25 degree for ERA5 with |
dy |
y resolution in the corresponding unit (e.g. 0.25 degree for ERA5 with |
plev |
a scalar containing the p resolution (if equidistant) or a vector containing pressure levels in Pa (for non-equidistant) |
mode |
the coordinate system, options are lonlat for a longitude-latitude-grid (default), or cartesian for an equidistant cartesian grid |
Value
field containing the divergence of fld