Computation functions
Statistics
Adds up the values per field in a |
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Computes the average per field in a |
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Computes the zonal averages for each field in a |
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Computes the meridional averages for each field in a |
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Computes the area-weighted correlation for each field in a |
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Returns the covariance of two |
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Computes the area-weighted covariance for each field in a |
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De-accumulate values in a |
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Computes the frequencies of a |
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Computes the average weighted by the gridcell area for each field in |
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Maximum |
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Maximum value of a |
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Generates a |
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Minimum |
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Computes a set of percentiles in a |
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Computes he pointwise root mean square for |
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Computes the area-weighted root mean square for |
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Returns the standard deviation of all the fields in a |
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Computes the area-weighted standard deviation for each field in a |
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Returns the variance of all the fields in a |
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Computes the area-weighted variance for each field in a |
Geographic
Computes the bearings with respect to a reference in a |
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Performs spatial convolution on a |
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Generates a field with the cosine of the latitudes in a |
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Computes the distances in a |
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Sorts a |
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Computes the grid cell area in a |
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Interpolates |
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Returns the nearest grid point value from a |
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Returns the nearest grid point value from a |
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Offsets the locations of |
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Regridding and derivatives |
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Repoject satellite view GRIB data onto a latlon grid |
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Generates a field with the cosine of the latitudes in a |
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Performs spatial smoothing on a |
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Performs spatial smoothing on a |
Computes the solar zenith angle for a |
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Filters the points of the first |
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Returns the indexes of the four surrounding grid points in a |
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Generates a field with the tangent of the latitudes in a |
Masking
Converts numbers to missing values in a |
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Converts missing values to numbers in a |
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Generates polygon masks for a |
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Removing missing lat/lons form a |
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Removes missing values from a |
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Generates masks based on a radius around a point for |
Wind
Computes the absolute vorticity from a relative vorticity |
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Computes the wind direction |
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Computes the rotational wind from a spectral vorticity |
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Computes the divergent wind from a spectral divergence |
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Computes the geostrophic wind on pressure levels in a |
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Computes the wind speed from a u and v component |
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Computes the stream function from a spectral vorticity |
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Computes u/v from a spectral vorticty and divegence |
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Computes the velocity potential from a spectral divergence |
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Computes the x and y components from polar components |
Vertical
Generates data for the cross section view |
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Generates data for the Hovmoeller area mode |
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Generates data for the Hovmoeller expand mode |
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Generates data for the Hovmoeller line mode |
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Generates data for the Hovmoeller vertical mode |
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Interpolates a model level |
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Generates data for the vertical profile view |
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Computes the geopotential on model levels for a |
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Interpolates a |
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Generates data for the average view |
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Interpolates pressure level fields to pressure levels |
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Computes the pressure on model levels in a |
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Computes the verical pressure derivative |
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Computes the Q-vector |
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Computes the static stability |
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Computes the pressure thickness on model levels in a |
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Computes the pressure on model levels in a |
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Computes the pressure thickness of model levels in a |
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Performs a vertical integration for a |
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Performs a vertical integration for a |
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Computes the vertical velocity in m/s from pressure velocity |
Thermodynamics
Computes the dewpoint for a given temperature and relative humidity |
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Computes the dewpoint for a given specific humidity and pressure |
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Computes the equivalent potential temperature on model levels |
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Computes the equivalent potential temperature on pressure levels |
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Computes the Lifted Condensation Level (LCL) using the parcel method |
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Computes the mixing ratio from specific humidity |
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Computes the potential temperature for a given temperature and pressure |
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Computes the potential temperature on model levels |
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Computes the potential temperature on pressure levels |
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Computes the relative humidity for a given temperature and dewpoint |
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Computes the relative humidity from specific humidity |
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Computes the relative humidity from specific humidity |
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Computes the saturation mixing ratio for a given temperature and pressure |
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Computes the saturation vapour pressure for a given temperature |
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Computes the saturation equivalent potential temperature on model levels |
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Computes the saturation equivalent potential temperature on pressure levels |
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Computes the specific humidity for a given dewpoint and pressure |
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Computes the temperature from potential tempearture and pressure |
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Generates thermodynamical profile from |
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Extracts information from a thermo data object |
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Extracts data and metadata from a thermo data object |
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Generates thermodynamical profile from GRIB |
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Returns a set of coloured areas from a thermo parcel path |
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Computes the path of an ascending thermodynamic parcel |
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Computes the vapour pressure for a given specific humidity and pressure |
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Computes the virtual temperature for a given temperature and specific humidity |
Calculus
Computes the horizontal divergence of a vector |
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Computes first West-East derivative of a |
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Computes first South-North derivative of a |
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Computes horizontal gradient of a |
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Computes the surface integral of a |
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Computes the horizontal Laplacian of |
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Regridding and derivatives |
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Computes the second West-East derivative of a |
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Computes the econd South-North derivative of a |
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Compute the shear deformation of a vector |
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Compute the stretch deformation of a vector |
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Computes the relative vorticity of a vector |
Basic mathematics
Computes the absolute value |
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Computes the arc cosine |
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Computes the arc sine |
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Computes the arc tangent |
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Computes the arc tangent of 2 |
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Computes the cosine |
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Computes the integer part of a divison |
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Computes the exponential |
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Returns ranges of bits |
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Computes the natural logarithm |
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Computes the base 10 logarithm |
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Computes the integer remainder of a divison |
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Computes the sign |
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Computes the sine |
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Computes the square root |
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Computes the tangent |