hn2016-falwa 0.7.0

python package to compute finite-amplitude local wave activity (Huang and Nakamura 2016, JAS)

hn2016_falwa is a package that contains modules to compute the finite-amplitude
local wave activity (FALWA) and reference state (U_ref) in the following papers:
Huang and Nakamura (2016, JAS): http://dx.doi.org/10.1175/JAS-D-15-0194.1
Huang and Nakamura (2017, GRL): http://onlinelibrary.wiley.com/doi/10.1002/2017GL073760/full
Nakamura and Huang (2018, Science): https://doi.org/10.1126/science.aat0721
Neal et al (submitted to GRL.)

The current version of the library handles calculation of FALWA in a spherical barotropic model and QGPV fields on 
isobaric surfaces.

The functions in this library can compute the tracer equivalent-latitude relationship
proposed in Nakamura (1996) (Also, see Allen and Nakamura (2003)) and the (zonal mean)
finite-amplitude wave activity in spherical geometry as in Nakamura and Solomon (2010).

Links:    
- Source code: http://github.com/csyhuang/hn2016_falwa/