.. highlight:: rest

.. _download:

Download
=============

The inversion software is available by ftp at ftp://aftp.cmdl.noaa.gov/products/carbontracker/lagrange/src/

The package includes the python scripts, a sample :ref:`configuration <config>` file, a North America landmask, and a netcdf file 
with a global grid specifying land/ocean cells, which can be used to create a landmask for other domains (see :ref:`landmask` for more information about landmasks).

Requirements
------------

The python code was developed on pretty old versions of python, so it will likely run anywhere.  It can run under either python 2 or 3.

        * python >= 2.6, python 3.6
        * numpy >= 1.4
        * scipy >= 0.7
        * python netCDF4 module (https://github.com/Unidata/netcdf4-python) The netCDF4 module has additonal requirements.  See the docs for more information.
        * python configObj module (https://github.com/DiffSK/configobj)


.. note::
   There was a bug in the version 0.12 software for calculating hq (starting in February 2017). This has been fixed in the 0.13 version.