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potential-vorticity

Python code (gfs_pv_1.2.py) for dynamic tropopause (DT) calculations: DT pressure, DT potential temperature (theta), PV on the 330K isentropic surface, and a PV and theta cross-section at the latitude where the tropopause is lowest in the domain. The date and time need to be set in the beginning of the code; the domain can be changed there as well.

gfs_pv_1.2_3D.py is the same code but with additional (poor) 3D plots

Support from NSF AGS-1623912 is gratefully acknowledged.

This code has a DOI and is citable: DOI

The data source is the online GFS analysis, and the date and time need to be set within the period of available data.

The program can take a few minutes to run because it is accessing data over the internet.

Samples of the four figures that are generated are included as PNG files: