22 documents found, page 1 of 3
Hydrometeorological dataset (2018–2023) from the largest Portuguese reservoir: ...
Rodrigues, Gonçalo; Purificação, Carolina; Potes, Miguel; Costa, Maria João; Salgado, RuiThe databases provided for two meteorological stations installed in the Alqueva reservoir (the largest artificial lake in Europe), one located on a floating platform and the other on the shore (approximately 1 km away in a straight line), cover a period of 6 years, from 2018 to 2023. The data available are, the hourly accumulated precipitation as well as the hourly averages of surface water temperature (0.25 m ...
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...
A Case Study of the Possible Meteorological Causes of Unexpected Fire Behavior ...
Couto, Flavio Tiago; Santos, Filippe L. M.; Campos, Cátia; Purificação, Carolina; Andrade, Nuno; López-Vega, Juan M.; Lacroix, MatthieuThis study provides insights into large fires in the Pantanal by analyzing the atmospheric conditions that influenced the rapid fire evolution between 13 and 14 November 2023, when fire fronts spread rapidly, leading to critical situations for firefighters. The observation-based analysis helped us to identify some characteristics of the fire’s evolution and the meteorological conditions in the region. Furthermo...
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...
Towards a better understanding of pyroconvective clouds using Meso-NH/ForeFire ...
Couto, Flavio Tiago; Campos, Cátia; Filippi, Jean-Baptiste; Baggio, Roberta; Purificação, Carolina; Santos, Filippe L. M.; Salgado, RuiIn 2017, Portugal was affected by several mega-fire episodes, which led the convective clouds formation, i.e., pyroCumulus (pyroCu) or pyroCumulonimbus (pyroCb). The pyroCb plays a crucial role in the fire front evolution through feedback processes between the atmosphere and the fire, including increased burn and spread rates by surface wind speed and direction variations. In order to investigate the pyro-conve...
Assessing ECMWF Lightning Forecast in Portugal during fire seasons
Campos, Cátia; Couto, Flavio Tiago; Santos, Filippe L. M.; Rio, João; Ferreira, Teresa; Purificação, Carolina; Salgado, RuiPortugal is one of the European countries that faces significant challenges with wildfires. While lightning-triggered natural fires constitute a minority compared to anthropogenic ones, accurate forecasting of lightning occurrences is crucial for effective prevention. The study assesses the ECMWF model's capability to predict lightning in Portugal over four fire seasons [2019-2022]. Observed lightning data was ...
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 ...
Meteorological conditions favouring the development of mega-fires
Campos, Cátia; Couto, Flavio Tiago; Purificação, Carolina; Salgado, Rui; Filippi, Jean-Baptiste; Baggio, RobertaIn recent years, the development of clouds due to the convection created by the fire has been reported in several wildfires. These clouds can be of 2 types: pyro-cumulus (PyroCu) or pyro-cumulonimbus (PyroCb). In 2017, Portugal recorded 11 mega-fires, of which 8 occurred on October 15, 2017. As a case study of pyro-convection, the Quiaios wildfire was chosen. In this study, two numerical simulations were made u...