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Using Time-Series To Measure Uncertainty In Environmental Input-Output Analysis

  • Asuka Yamakawa
  • Glen Peters

Environmental Input-Output Analysis (EIOA) is a tool for environmental analysis of broad classes of sectoral activities, taking into account indirect effects in other sectors in the supply chain. The core of EIOA is an input-output table (IOT) and national accounting matrix including environmental accounts (NAMEA) for a fixed base-year. We evaluate the uncertainty in EIOA using a time series of current-price IOT and NAMEA for 13 years from 1990 to 2002. We find annual variations in the current-price IOT and NAMEA, which may represent either realistic changes in production or measurement error. We assume the changes are errors and apply a regression analysis to remove the trends from the underlying data and estimate the uncertainty in the raw IOT. We then calculate the emissions for various final users and sectors to estimate the uncertainties from typical EIOA investigations. Using Monte Carlo analysis, we then investigate how well the variations in the current-price IOT and NAMEA over time may represent uncertainties. The results of this work have several implications for both statistical offices and the analyst. Statistical offices can provide details on data sources, methodologies, and estimates of annual variations. Analysts can incorporate this uncertainty information to understand the implications of uncertainty on their calculations and ultimately the policy recommendations derived from their studies.

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File URL: http://www.tandfonline.com/doi/abs/10.1080/09535310903444766
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Article provided by Taylor & Francis Journals in its journal Economic Systems Research.

Volume (Year): 21 (2009)
Issue (Month): 4 ()
Pages: 337-362

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Handle: RePEc:taf:ecsysr:v:21:y:2009:i:4:p:337-362
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