Integrated Methane Inversion (IMI)

The Integrated Methane Inversion (IMI) workflow is a cloud-computing tool for quantifying methane emissions by inversion of satellite observations from the TROPOspheric Monitoring Instrument (TROPOMI). It uses GEOS-Chem as forward model for the inversion and infers methane emissions at up to 12 x 12 km² resolution.

This site provides instructions for using the IMI, including launching an AWS compute instance, configuring and running an inversion, and analyzing the results with a ready-made jupyter notebook.

Some instructions are specific to the Amazon Web Services (AWS) cloud, but the IMI can also be run on a local compute cluster by either manually building the environment or using a docker container.

Getting Started

• Quick start guide
• Best Practices
• Terminology
• FAQs

User Guide

• Download instructions
• Configuration file
• Input data
• IMI preview
• Output files and directories
• Setting up Jupyter on EC2

Advanced Features

• Creating a custom state vector file
• Using the IMI Clustering Options
• Modifying prior emission estimates
• Using custom regions with the IMI
• Constructing an inversion ensemble
• The IMI Kalman Filter mode
• Running the IMI with tmux
• Running the IMI on a local cluster
• Using the IMI Docker container

Other

• Common IMI configurations
• Tips for minimizing AWS costs

Help & Reference

• IMI version history
• Known bugs and issues
• Support Guidelines
• Contributing Guidelines
• Editing this User Guide