6 documents found, page 1 of 1
Lightning modelling in numerical weather prediction
Salgado, Rui; Couto, Flavio; Iakunin, Maksim; Pinto, Paulo; Viegas, Tânia; Pinty, Jean-PierreThe explicit representation of the atmospheric electric field in numerical weather prediction models is a current challenge. This representation will allow a physically based lightning forecast. Present study aims to assess the performance of the Cloud ELectrification and Lightning Scheme (CELLS) [1] coupled to the Meso-NH atmospheric mesoscale research model [2] in simulating Cloud-to-Ground (CG) flashes. The ...
Modelling dry thunderstorm environment during a wildfire episode in Portugal
Couto, Flavio; Iakunin, Maksim; Salgado, Rui; Pinto, Paulo; Viegas, Tânia; Pinty, Jean-PierreUnder future climate uncertainties, a better understanding of wildfires is necessary both from physical and operational points of view, which are the goals of the CILIFO (Centro Ibérico para la Investigacion y Lucha contra Incendios Forestales) Interreg POCTEP project. Among several sources of fire ignition, lightnings are the main natural source of wildfires and an important contributor to burned areas in many...
Lightning Prediction with a mesoscale atmospheric model
Salgado, Rui; Couto, Flavio; Iakunin, Maksim; Pinto, Paulo; Viegas, Tânia; Pinty, Jean-PierrePredicting the probability of lightning strikes, particularly under very hot weather, can be useful for assess the risk of natural ignitions. The present study aims to assess the performance of the Cloud Electrification and Lightning Scheme (CELLS) [1] coupled to the Meso-NH atmospheric mesoscale model [2] in simulating Cloud-to-Ground (CG) flashes. For this purpose, a simulation of a case study in which many l...
Lightning modelling for the research of forest fire ignition in Portugal
Couto, Flavio; Iakunin, Maksim; Salgado, Rui; Pinto, Paulo; Viegas, Tânia; Pinty, Jean-PierreThe study aims to assess the applicability of the current Meso-NH electrical scheme (CELLS) in the investigation of forest fire ignition. Therefore, the challenge is to diagnose cloud-to-ground (CG) lightning at 1 km spatial resolution and, subsequently, preferred regions where Forest Fire Events (FFE) could be naturally ignited. The afternoon of 17th June 2017 has been considered for the study, since the dry t...
Modelação de Descargas Eléctricas e da Circulação Atmosférica no Evento de Pedr...
Salgado, Rui; Iakunin, Maksim; Couto, Flavio; Pinty, Jean-PierreThe Meso-NH cloud-resolving model coupled to the Cloud Electrification and Lightning Scheme (CELLS) were used at 1 km horizontal resolution to simulate the Cloud-Ground electrical discharges and the evolution of the meteorological conditions during the tragic wildfire event occurred in Pedrogão Grande, Portugal, in June 17, 2017. The model well simulates the occurrence of several lightnings during the day, but ...
High resolution simulation of the meteorology and lightnings during Pedrogão Gr...
Salgado, Rui; Iakunin, Maksim; Couto, Flavio; Pinty, Jean-PierreThe evolution of the meteorological situation during the beginning and the development of the terrible fire of Pedrogão Grande, Portugal, on June 17, 2017, was studied based on numeric simulations with the Meso-NH atmospheric model at 1x1 km horizontal resolution. In the version used, the Meso-NH includes the cloud electrification and lightning scheme (CELLS), a completely explicit 3-D electrical scheme, which ...