8 documents found, page 1 of 1
Exploring the atmospheric conditions increasing fire danger in the Iberian Peni...
Purificação, Carolina; Campos, Cátia; Henkes, Alice; Couto, Flavio TiagoThe fire danger is particularly sensitive to meteorological conditions. The present study discusses the atmospheric conditions during three periods to evaluate how they can increase fire danger. A set of three convection-permitting simulations was configured at 2.5 km resolution using the Meso-NH model. In the first period, the intense surface heating induced by a heatwave favoured the development of the Iberia...
The Role of Atmospheric Circulation in Favouring Forest Fires in the Extreme So...
Purificação, Carolina; Henkes, Alice; Kartsios, Stergios; Couto, Flavio TiagoThe study explores two forest fires in extreme southern Portugal aiming to increase the knowledge of how atmospheric circulation influenced the fire dynamics in each event. The meteorological conditions were simulated by the Meso-NH full-physics non-hydrostatic limited-area research model. The two numerical simulations were performed using a two-way nested domain configuration with horizontal resolutions of 250...
Application of atmospheric modelling to understand wildfires environment in Sou...
Purificação, Carolina; Henkes, Alice; Kartsios, Stergios; Couto, Flavio TiagoMeteorological conditions are an important factor contributing to extreme fire environment. Southern Portugal has some susceptible regions to fire with at least 4 mega fires occurring in the last two decades. Aiming to investigate in detail the atmospheric environment of large fires, several numerical simulations were performed using the Meso-NH non-hydrostatic research model. Some simulations were configured u...
Meteorological environments leading to two large fires in Southern Portugal
Purificação, Carolina; Campos, Cátia; Henkes, Alice; Kartsios, Stergios; Couto, Flavio TiagoThe study is a step forward in the characterization of meteorological environments that favour the evolution of large and extreme fires in Southern Portugal. The region has some fire-prone areas which are recognized by the mega fires occurred in 2003, 2005, and 2018. Two numerical simulations were performed using the Meso-NH non-hydrostatic research model and used to investigate in detail the atmospheric enviro...
Modelling the atmospheric boundary layer conditions during a wildfire event
Purificação, Carolina; Campos, Cátia; Henkes, Alice; Couto, Flavio TiagoThe atmospheric structure becomes more complex than homogeneous terrain over mountainous terrain in terms of the Atmospheric Boundary Layer (ABL). In the context of interaction between fire and atmosphere, abrupt changes in the ABL wind often lead to erratic and turbulent flow in the fire environment, which can be dangerous for firefighters. The study intends to determine the ABL conditions associated with the ...
Modelling the atmospheric factors determining the evolution of the boundary lay...
Purificação, Carolina; Campos, Cátia; Henkes, Alice; Couto, Flavio TiagoOver mountainous terrain, the atmospheric structure becomes much more complex than homogeneous terrain in terms of the Atmospheric Boundary Layer (ABL). In the context of interaction between fire and atmosphere, abrupt changes in the ABL wind often lead to erratic and turbulent flow in the fire environment and expose firefighters to dangerous conditions. The study aims to characterize the ABL conditions associa...
Use of atmospheric modelling to assess fire danger in mainland Portugal during ...
Purificação, Carolina; Campos, Cátia; Henkes, Alice; Couto, Flavio TiagoIntense heatwave periods increase the likelihood of extreme wildfires which can lead to negative impacts on many socio-economic sectors. Also, there is still a need to better understand how this phenomenon can impact specific regions in terms of fire danger. The present study aims to investigate three heatwave periods occurring in 2003, 2018 and 2019. All the periods were associated with significant wildfires, ...
Modelação da camada limite atmosférica durante um evento de incêndio florestal
Purificação, Carolina; Campos, Cátia; Henkes, Alice; Couto, Flavio TiagoThe study aims to characterise the ABL conditions associated with the largest wildfire event that occurred in Portugal in 2019. The Meso-NH atmospheric model is used to represent the local and mesoscale environment during this event. From the Richardson number method, ABL height depicted a growing in the morning that reached a peak height by midafternoon. The ABL height ranged from 500 to 900 m throughout the a...