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Description:

pyrcel 1.3.2

pyrcel: cloud parcel model

This is an implementation of a simple, adiabatic cloud parcel model for use in
aerosol-cloud interaction studies. Rothenberg and Wang (2016) discuss the model in detail and its improvements
and changes over Nenes et al (2001):

Implementation of κ-Köhler theory for condensation physics (Petters and
Kreidenweis, 2007)
Extension of model to handle arbitrary sectional representations of aerosol
populations, based on user-controlled empirical or parameterized size distributions
Improved, modular numerical framework for integrating the model, including bindings
to several different stiff integrators:

lsoda - scipy ODEINT wrapper
vode, lsode*, lsoda* - ODEPACK via odespy
cvode - SUNDIALS via Assimulo

among other details. It also includes a library of droplet activation routines and scripts/notebooks for evaluating those schemes against equivalent calculations done with the parcel model.
Updated code can be found the project github repository. If you'd like to use this code or have any questions about it, please contact the author. In particular, if you use this code for research purposes, be sure to carefully read through the model and ensure that you have tweaked/configured it for your purposes (i.e., modifying the accomodation coefficient); other derived quantities).
Detailed documentation is available, including a scientific description, installation details, and a basic example which produces a figure like the plot at the top of this page.
Requirements
Required

Python >= 3.7
numba
NumPy
SciPy
pandas - v0.25+
xarray - v2023+
PyYAML

Optional
The following packages are used for better numerics (ODE solving)

Assimulo

The easiest way to satisfy the basic requirements for building and running the
model is to use the Anaconda scientific Python
distribution. Alternatively, a
miniconda environment is
provided to quickly set-up and get running the model. Assimulo's dependency on
the SUNDIALS library makes it a little bit tougher to install in an automated
fashion, so it has not been included in the automatic setup provided here; you
should refer to Assimulo's documentation
for more information on its installation process. Note that many components of
the model and package can be used without Assimulo.
Development
http://github.com/darothen/pyrcel
Please fork this repository if you intend to develop the model further so that the
code's provenance can be maintained.
License
All scientific code should be licensed. This code is released under the New BSD (3-clause) license.