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meteoEVT (version 0.1.0)

Computation and Visualization of Energetic and Vortical Atmospheric Quantities

Description

Energy-Vorticity theory (EVT) is the fundamental theory to describe processes in the atmosphere by combining conserved quantities from hydrodynamics and thermodynamics. The package 'meteoEVT' provides functions to calculate many energetic and vortical quantities, like potential vorticity, Bernoulli function and dynamic state index (DSI) [e.g. Weber and Nevir, 2008, ], for given gridded data, like ERA5 reanalyses. These quantities can be studied directly or can be used for many applications in meteorology, e.g., the objective identification of atmospheric fronts. For this purpose, separate function are provided that allow the detection of fronts based on the thermic front parameter [Hewson, 1998, ], the F diagnostic [Parfitt et al., 2017, ] and the DSI [Mack et al., 2022, ].

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Install

install.packages('meteoEVT')

Monthly Downloads

195

Version

0.1.0

License

GPL (>= 2)

Issues

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Maintainer

Laura Mack

Last Published

September 5th, 2022

Functions in meteoEVT (0.1.0)

jacobian

Jacobian matrix and determinant
df_dx

df_dx
df_dy

df_dy
g

g
meteoEVT-package

Introduction
frontid

Front Identification und Statistics
cp

cp
calc_vorticity

Vorticity
fill_horiz

Plotting a xy domain with custom boundaries, colour paletts and optional world map
scalarprod

scalar product
rot

rotation
grad

gradient of a scalar field
readin_era5

read in ERA5 data
readin_dim

read in dimensions
omega

omega
re

re
div

divergence
df_dz

df_dz
calc_dsi

Dynamic State Index (DSI)
calc_density

Density
calc_enstrophy

Enstrophy density
calc_frontogenesis

Petterssen Frontogenesis Function
R

R
calc_fdiag

F diagnostic
calc_lamb

Lamb vector (sometimes called vortex energy)
calc_tfp

Thermic Front Parameter (TFP)
calc_theta

Potential temperature
calc_helicity

Helicity density
calc_bernoulli

Bernoulli function
crossprod

cross product
Rv

Rv
Rd

Rd
df_dp

df_dp
calc_pv

Potential Vorticity (PV)