cdo_const | R Documentation |
Generates a dataset with one or more fields
cdo_const(
const = NULL,
seed = NULL,
grid = NULL,
start = NULL,
end = NULL,
inc = NULL,
levels = NULL,
ofile = NULL
)
cdo_random(
const = NULL,
seed = NULL,
grid = NULL,
start = NULL,
end = NULL,
inc = NULL,
levels = NULL,
ofile = NULL
)
cdo_seq(
const = NULL,
seed = NULL,
grid = NULL,
start = NULL,
end = NULL,
inc = NULL,
levels = NULL,
ofile = NULL
)
cdo_stdatm(
const = NULL,
seed = NULL,
grid = NULL,
start = NULL,
end = NULL,
inc = NULL,
levels = NULL,
ofile = NULL
)
cdo_topo(
const = NULL,
seed = NULL,
grid = NULL,
start = NULL,
end = NULL,
inc = NULL,
levels = NULL,
ofile = NULL
)
const |
FLOAT - Constant |
seed |
INTEGER - The seed for a new sequence of pseudo-random numbers [default: 1] |
grid |
STRING - Target grid description file or name |
start |
FLOAT - Start value of the loop |
end |
FLOAT - End value of the loop |
inc |
FLOAT - Increment of the loop [default: 1] |
levels |
FLOAT - Target levels in metre above surface |
ofile |
String with the path to the output file. |
const Create a constant field Creates a constant field. All field elements of the grid have the same value. random Create a field with random numbers Creates a field with rectangularly distrubuted random numbers in the interval \[0,1\]. topo Create a field with topography Creates a field with topography data, per default on a global half degree grid. seq Create a time series Creates a time series with field size 1 and field elements beginning with a start value in time step 1 which is increased from one time step to the next. stdatm Create values for pressure and temperature for hydrostatic atmosphere Creates pressure and temperature values for the given list of vertical levels. The formulas are: P(z) = P_0 * exp(-1 * g/R * H/T_0 * log( (exp(z/H)*T_0 + T_Delta)/(T_0 + T_Delta)) T(z) = T_0 + T_Delta * exp(-z/H) with the following constants T_0 = 213 K Offset to get a surface temperature of 288K T_Delta = 75 K Temperature lapse rate for 10Km P_0 = 1013.25 hPa Surface pressure H = 10000.0 m Scale height g = 9.80665 m/s**2 Earth gravity R = 287.05 J/kg*K Gas constant for air This is the solution for the hydrostatic equations and is only valid for the troposphere (constant positive lapse rate). The temperature increase in the stratosphere and other effects of the upper atmosphere are not taken into account.
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.
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