Preprocessing routines¶
Some elaborated variables need to be preprocessed, such as the moisture index. Thus, different preprocessing routines are available in AtmoSwing.
The main preprocessing routines implemented are:
Addition (
Addition
): add (point-wise) all the provided predictors.Average (
Average
): average (point-wise) all the provided predictors.Difference (
Difference
): process the difference (point-wise) between 2 predictor grids.Multiplication (
Multiplication
orMultiply
): multiply (point-wise) all the provided predictors.Humidity (or moisture) index (
HumidityIndex
): multiply the relative humidity and the precipitable waterHumidity (or moisture) flux (
HumidityFlux
): process the multiplication of the wind and the humidity index. Requires four predictors in the following order: 1) U wind, 2) V wind, 3) relative humidity and 4) precipitable waterWind speed (
WindSpeed
): process the wind speed with the provided U wind and V wind components.
The following preprocessing routines are usually not used directly (or are automatically handled by AtmoSwing):
Simple gradients (
SimpleGradients
): processing of differences between adjacent grid points by ignoring the horizontal distance.Real gradients (
RealGradients
): processing of real gradients between adjacent grid points (using the horizontal distance). This preprocessing method is automatically used when the analogy criterion isS1
.Simple gradients with Gaussian weights (
SimpleGradientsWithGaussianWeights
): same as before, but with a weighting of the spatial field by a gaussian ‘hat’-shaped pattern.Real gradients with Gaussian weights (
RealGradientsWithGaussianWeights
): same as before, but with a weighting of the spatial field by a gaussian ‘hat’-shaped pattern.Simple curvature (
SimpleCurvature
): processing of the ‘curvature’ between adjacent grid points by ignoring the horizontal distance.Real curvature (
RealCurvature
): processing of real ‘curvature’ between adjacent grid points (using the horizontal distance). This preprocessing method is automatically used when the analogy criterion isS2
.Simple curvature with Gaussian weights (
SimpleCurvatureWithGaussianWeights
): same as before, but with a weighting of the spatial field by a gaussian ‘hat’-shaped pattern.Real curvature with Gaussian weights (
RealCurvatureWithGaussianWeights
): same as before, but with a weighting of the spatial field by a gaussian ‘hat’-shaped pattern.