TY  - JOUR
PY  - 2023//
TI  - Fire-pollutant-atmosphere components and its impact on mortality in Portugal during wildfire seasons
JO  - Geohealth
A1  - de Souza Fernandes Duarte, Ediclê
A1  - Salgueiro, Vanda
A1  - Costa, Maria João
A1  - Lucio, Paulo Sérgio
A1  - Potes, Miguel
A1  - Bortoli, Daniele
A1  - Salgado, Rui
SP  - e2023GH000802
EP  - e2023GH000802
VL  - 7
IS  - 10
N2  - This study analyzed fire-pollutant-meteorological variables and their impact on cardio-respiratory mortality in Portugal during wildfire season. Data of burned area, particulate matter with a diameter of 10 or 2.5 μm (μm) or less (PM(10), PM(2.5)), carbon monoxide (CO), nitrogen dioxide (NO(2)), ozone (O(3)), temperature, relative humidity, wind speed, aerosol optical depth and mortality rates of Circulatory System Disease (CSD), Respiratory System Disease (RSD), Pneumonia (PNEU), Chronic Obstructive Pulmonary Disease, and Asthma (ASMA), were used. Only the months of 2011-2020 wildfire season (June-July-August-September-October) with a burned area greater than 1,000 ha were considered. Principal component analysis was used on fire-pollutant-meteorological variables to create two indices called Pollutant-Burning Interaction (PBI) and Atmospheric-Pollutant Interaction (API). PBI was strongly correlated with the air pollutants and burned area while API was strongly correlated with temperature and relative humidity, and O(3). Cluster analysis applied to PBI-API divided the data into two Clusters. Cluster 1 included colder and wetter months and higher NO(2) concentration. Cluster 2 included warmer and dried months, and higher PM(10), PM(2.5), CO, and O(3) concentrations. The clusters were subjected to Principal Component Linear Regression to better understand the relationship between mortality and PBI-API indices. Cluster 1 showed statistically significant (p-value < 0.05) correlation (r) between RSDxPBI (r (RSD) = 0.58) and PNEUxPBI (r (PNEU) = 0.67). Cluster 2 showed statistically significant correlations between RSDxPBI (r (RSD) = 0.48), PNEUxPBI (r (PNEU) = 0.47), COPDxPBI (r (COPD) = 0.45), CSDxAPI (r (CSD) = 0.70), RSDxAPI (r (CSD) = 0.71), PNEUxAPI (r (PNEU) = 0.49), and COPDxAPI (r (PNEU) = 0.62). Cluster 2 analysis indicates that the warmest, driest, and most polluted months of the wildfire season were associated with cardio-respiratory mortality.<p />  <p>Language: en</p>
LA  - en
SN  - 2471-1403
UR  - http://dx.doi.org/10.1029/2023GH000802
ID  - ref1
ER  -