Absolute Sustainability-Based Life Cycle Assessment (ASLCA): A Benchmarking Approach to Operate Agri-food Systems within the 2 degrees C Global Carbon Budget

Abstract

Given the increasing environmental impacts associated with global agri-food systems, operating and developing these systems within the so-called absolute environmental boundaries has become crucial, and hence the absolute environmental sustainability concept is particularly relevant. This study introduces an approach called absolute sustainability-based life cycle assessment (ASLCA) that informs the climate impacts of an agri-food system (on any economic level) in absolute terms. First, a global carbon budget was calculated that is sufficient to limit global warming to below 2°C. Next, a share of the carbon budget available to the global agri-food sector was estimated, and then it was shared..