While effective in providing a complete overview of the total CF
covering all indirect GHG emissions, EEIO modeling has certain
weaknesses that need to be addressed. Most important is the lack
of detail which renders it difficult to capture changes in the
procurement pattern. Although it is possible to differentiate
between things like medical precision equipment versus other
machinery and land transport versus water transport, the detail of
the IO sectors (Appendix A) is not sufficient to separate between
different types of specific equipment, such as office computers.
Secondly, using EEIO modeling, we usually assume a fixed
linear relationship between emissions and economic spending,
and thereby do not capture potential economy-of-scale effects and
also leave the model vulnerable to other price issue variations
(such as currency fluctuations, tax level changes on specific
products) within the different IO sectors. Combining the weaknesses
of both detail level and price issues introduces potentially
severe problems of an EEIO inventory. For example if the university
decides to purchase more environmental friendly computers
at a higher price, the EEIO model will identify this as an action
increasing the CF.
While effective in providing a complete overview of the total CF
covering all indirect GHG emissions, EEIO modeling has certain
weaknesses that need to be addressed. Most important is the lack
of detail which renders it difficult to capture changes in the
procurement pattern. Although it is possible to differentiate
between things like medical precision equipment versus other
machinery and land transport versus water transport, the detail of
the IO sectors (Appendix A) is not sufficient to separate between
different types of specific equipment, such as office computers.
Secondly, using EEIO modeling, we usually assume a fixed
linear relationship between emissions and economic spending,
and thereby do not capture potential economy-of-scale effects and
also leave the model vulnerable to other price issue variations
(such as currency fluctuations, tax level changes on specific
products) within the different IO sectors. Combining the weaknesses
of both detail level and price issues introduces potentially
severe problems of an EEIO inventory. For example if the university
decides to purchase more environmental friendly computers
at a higher price, the EEIO model will identify this as an action
increasing the CF.
การแปล กรุณารอสักครู่..
