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Learn about CEDA, the world's most comprehensive suite of environmental databases.
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The Comprehensive Environmental Data Archive (CEDA) is a suite of environmentally extended input-output databases that are designed to assist various environmental systems analyses and Life Cycle Assessments, including carbon footprinting, water footprinting and embodied energy analysis.
CEDA covers a comprehensive list of environmental interventions including natural resource types (fossil fuels, water, metals ores and minerals), and various emissions to air, water and soil. CEDA quantifies the amount of natural resources use and environmental emissions of products throughout their life-cycles by connecting input-output tables, which represent the entire supply-chain network of an economy, with a comprehensive list of environmental interventions.
The U.S., U.K. and EU25 versions use a consistent commodity-by-commodity input-output framework and distinguish the most detailed product categories under their respective national accounts. The U.S. version of CEDA alone contains over 3 million data points, which were distilled from various raw data containing tens of millions of data points. Currently, CEDA covers the U.S., U.K., and China, and all input data has gone through a consistent and rigorous quality control process.
The newest version of CEDA, CEDA 4, was released in 2010 using input-output tables and environmental statistics from 2002. This version introduced the capability of choosing between two allocation methods to assign environmental interventions to the appropriate economic categories: economic allocation or system expansion.3 Also, the number of environmental interventions increased to over 1500 in the U.S. version of the database, covering consumptive water use, total fossil energy consumption, and emission of 17 different dioxin types. Version 4 also enables users to choose whether to exclude capital goods in the supply-chain, to satisfy the requirements of the UK's Publicly Available Specification (PAS) 2050 for carbon footprinting. The standard version of CEDA 4 includes capital goods in the supply-chain. The PAS 2050 expressly requires excluding capital goods and associated carbon emissions from the system.
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