Angular Momentum Budget in Spherical Pressure Coordinates from Reanalysis datasets

Script and documentation for deriving hourly Angular Momentum Budgets from reanalysis data on pressure levels.

please cite as:

Momme C. Hell. Angular Momentum Budget in Spherical Pressure Coordinates from Reanalysis datasets., 2021, v1.0 DOI:https://doi.org/10.5281/zenodo.5808433

creator: [email protected]

needed python modules:

glob, xarray, time, shutil, numpy, cdsapi

configure cdsapi credentials to download ERA5 data: https://cds.climate.copernicus.eu/api-how-to

File description

technical_notes.pdf

Derivation of the budget in Pressure coordinates and description of the in and output files: https://github.com/mochell/AM_budget_pressure_ERA5/blob/main/technical_notes.pdf

A02_download_file.py

example file of how to download data from the ECMWF server

A03_cal_budget_worker_optimized.py

calculated the budget as described in technical_notes.pdf needs:

module file

tools_AM_budget.py

contains various constants

config.json

example output:

exmpl_repres_dmean_ps_iews_1980-01-01.pdf

exmpl_budget_dmean_1980-01-01.pdf

worker_log_num250_1980-01-01.hist.txt