obsarray: Measurement uncertainty handling in Python

obsarray is an extension to xarray for defining, storing and interfacing with uncertainty information using standardised metadata. It is particularly designed to work well with netCDF files and for the Earth Observation community.

obsarray is part of the CoMet Toolkit (community metrology toolkit), and can combined with the punpy (propagating uncertainties in python) module for very simple propagation of defined data uncertainties through arbitrary python functions.

This documentation is under active development.


obsarray has been developed by Sam Hunt.

The development has been funded by:

  • The UK’s Department for Business, Energy and Industrial Strategy’s (BEIS) National Measurement System (NMS) programme

  • The IDEAS-QA4EO project funded by the European Space Agency.

Project status

obsarray is under active development. It is beta software.