Difference between revisions of "Environmental Impact"
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== Definition == | == Definition == | ||
− | '''Environmental Impact''' (or Environmental Stressor) in the context of an [[Input-Output Model]] denotes an extension of the basic IO model via a system of satellite accounts that provides insights into the environmental footprint of economic | + | '''Environmental Impact''' (or Environmental Stressor) in the context of an [[Input-Output Model]] denotes an extension of the basic IO model via a system of satellite accounts that provides insights into the environmental footprint of economic activities. |
== Approach == | == Approach == | ||
− | Each | + | Each MRIO's environmental consumption-based accounts (CBA) result can be understood as a product of three variables: |
− | of production | + | * a flow (transactions) matrix Z describing the economic structure between various production sectors |
+ | * an environmental stressors matrix (or ‘satellite account’) F describing the per-sector direct environmental impacts of production | ||
+ | * a consumption bundle Y describing the composition of final consumption ([[Final Demand]]). | ||
− | + | ||
+ | The total footprint C is a function of these three variables: <math>C = f (F, Z, Y)</math>. | ||
== Formula == | == Formula == | ||
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:<math> | :<math> | ||
\begin{align} | \begin{align} | ||
− | + | C & = F \times (I - A)^{-1} \times Y | |
+ | \end{align} | ||
</math> | </math> | ||
− | where | + | where: |
+ | |||
+ | * <math>F</math> is a vector of impact intensities per sector | ||
+ | * <math>C</math> is the total impact for given final demand Y | ||
− | * | + | == Further Resources == |
− | * | + | * [https://www.openriskacademy.com/course/view.php?id=70 Crash Course on Input-Output Model Mathematics] |
+ | * [https://www.openriskacademy.com/course/view.php?id=64 Introduction to Input-Output Models using Python] | ||
== References == | == References == |
Latest revision as of 14:33, 21 November 2023
Definition
Environmental Impact (or Environmental Stressor) in the context of an Input-Output Model denotes an extension of the basic IO model via a system of satellite accounts that provides insights into the environmental footprint of economic activities.
Approach
Each MRIO's environmental consumption-based accounts (CBA) result can be understood as a product of three variables:
- a flow (transactions) matrix Z describing the economic structure between various production sectors
- an environmental stressors matrix (or ‘satellite account’) F describing the per-sector direct environmental impacts of production
- a consumption bundle Y describing the composition of final consumption (Final Demand).
The total footprint C is a function of these three variables: .
Formula
where:
- is a vector of impact intensities per sector
- is the total impact for given final demand Y