Grupo de Investigación

ESTUDIO Y GESTION DEL MEDIO NATURAL

Departamento de Geografía, Urbanismo y Ordenación del Territorio- Universidad de Cantabria

RASILLA, D.F.; GARCIA-CODRON, J.C.; CARRACEDO, V.; DIEGO, C. (2010). Circulation patterns, wildfire risk and wildfire occurrence at continental Spain. Physics and chemistry of the Earth, 35 (1-2), p. 553 -560.

ABSTRACT

Daily weather variability is a major factor affecting the behavior of wildfires. This paper analyzes the links between atmospheric circulation at synoptic scale, weather conditions influencing fires at regional scale and the occurrence of very large forest fires in continental. A synoptic climatology of the 850 hPa geopotential heights was derived employing multivariate techniques (Principal Component Analysis and Clustering). The catalogue displays the spatial and temporal variability of the atmospheric circulation over the area, reproducing distinctive pressure patterns and seasonal frequency variations. Each pattern shows substantial region-wide differences in the magnitude of weather-related fire risk conditions, corresponding to combinations of controlling climatic factors. Finally, the results emphasize the obligation to combine both short term and long term climate variability to explain the occurrence of episodes of very large wildfires.

KEYWORDS

Synoptic climatology; Iberian Peninsula; Weather-related wildfire risk; Very large wildfires.

Circulation patterns, wildfire risk and wildfire occurrence at continental Spain. Available from: http://www.sciencedirect.com/science/article/pii/S1474706509001119