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Atmospheric Emissions from Vegetation Fires in Portugal (1990–2008): Estimates, Uncertainty Analysis, and Sensitivity Analysis : Volume 10, Issue 9 (22/09/2010)

By Rosa, I. M. D.

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Book Id: WPLBN0003986400
Format Type: PDF Article :
File Size: Pages 46
Reproduction Date: 2015

Title: Atmospheric Emissions from Vegetation Fires in Portugal (1990–2008): Estimates, Uncertainty Analysis, and Sensitivity Analysis : Volume 10, Issue 9 (22/09/2010)  
Author: Rosa, I. M. D.
Volume: Vol. 10, Issue 9
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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C. Pereir, J. M., Tarantola, S., & D. Ros, I. M. (2010). Atmospheric Emissions from Vegetation Fires in Portugal (1990–2008): Estimates, Uncertainty Analysis, and Sensitivity Analysis : Volume 10, Issue 9 (22/09/2010). Retrieved from

Description: Technical University of Lisbon, School of Agriculture, Center for Forest Studies, Tapada da Ajuda 1349-017 Lisboa, Portugal. Atmospheric emissions from wildfires in Portugal were estimated yearly over the period 1990–2008 using Landsat-based burnt area maps and land cover maps, national forest inventory data, biometric models, and literature review data. Emissions were calculated as the product of area burnt, biomass loading per unit area, combustion factor, and emission factor, using land cover specific values for all variables. Uncertainty associated with each input variable was quantified with a probability density function or a standard deviation value. Uncertainty and sensitivity analysis of estimates were performed with Monte Carlo and variance decomposition techniques. Area burnt varied almost 50-fold during the study period, from about 9000 ha in 2008 to 440 000 ha in 2003. Emissions reach maximum and minimum in the same years, with CO2eq values of 159 and 5655 Gg for 2008 and 2003, respectively. Emission factors, and the combustion factor for shrubs were identified as the variables with higher impact on model output variance. There is a very strong correlation between area burnt and emissions, allowing for accurate emissions estimates once area burnt is quantified. Pyrogenic emissions were compared against those from various economy sectors and found to represent 1% to 9% of the total.

Atmospheric emissions from vegetation fires in Portugal (1990–2008): estimates, uncertainty analysis, and sensitivity analysis

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