36 documents found, page 1 of 4
Impact of forest biomass residues to the energy supply chain on regional air qu...
Rafael, S.; Tarelho, L.; Monteiro, A.; Sá, E.; Miranda, A. I.; Borrego, C.; Lopes, M.The increase of the share of renewable energy in Portugal can be met from different sources, of which forest biomass residues (FBR) can play a main role. Taking into account the demand for information about the strategy of FBR to energy, and its implications on the Portuguese climate policy, the impact of energy conversion of FBR on air quality is evaluated. Three emission scenarioswere defined and a numerical ...
Emissions characterization from EURO 5 diesel/biodiesel passenger car operating...
Lopes, M.; Serrano, L.; Ribeiro, I.; Cascão, P.; Pires, N.; Rafael, S.; Tarelho, L.; Monteiro, A.; Nunes, T.; Evtyugina, M.; Nielsen, O. J.The increasing demand of petroleum based fuels and their use in internal combustion engines have adverse effect on air quality and climate change. Production of biofuels promises substantial improvement in air quality through reducing emission from biofuel operated vehicles. In this study the influence of the fuel mixture on EURO 5 vehicle exhaust emissions operating under the New European Driving Cycle (NEDC) ...
Area burned in Portugal over recent decades: an extreme value analysis
Scotto, M. G.; Gouveia, S.; Carvalho, A.; Monteiro, A.; Martins, V.; Flannigan, M. D.; San-Miguel-Ayanz, J.; Miranda, A. I.; Borrego, C.Forest fires are a major concern in Europe, particularly in Portugal where large forest fires are responsible for negative environmental, social and economic effects. In this work, a long time series of daily area burned in 18 Portuguese districts (north, coastal areas and inner-south) from 1980 to 2010 are analysed to characterise extreme area burned and regional variability. The analysis combines the peak-ove...
The role of transboundary air pollution over Galicia and North Portugal area
Borrego, C.; Souto, J. A.; Monteiro, A.; Dios, M.; Rodríguez, A.; Ferreira, J.; Saavedra, S.; Casares, J. J.; Miranda, A. I.Insummer,highlevelsofozone(O3)arefrequently measured at both Galicia and Northern Portugal air quality monitoring stations, even exceeding the limit values imposed by legislation. This work aims to investigate the origin of these high O3 concentrations by the application of a chemical transport modelling system over the northwestern area of the Iberian Peninsula. The WRF–CHIMERE modelling system was applied wit...
A comparative analysis of two highly spatially resolved European atmospheric em...
Ferreira, J.; Guevara, M.; Baldasano, J. M.; Tchepel, O.; Schaap, M.; Miranda, A. I.; Borrego, C.A reliable emissions inventory is highly important for air quality modelling applications, especially at regional or local scales, which require high resolutions. Consequently, higher resolution emission inventories have been developed that are suitable for regional air quality modelling.This research performs an inter-comparative analysis of different spatial disaggregation methodologies of atmospheric emissio...
Ensemble techniques to improve air quality assessment: focus on O3 and PM
Monteiro, A.; Ribeiro, I.; Tchepel, O.; Carvalho, A.; Martins, H.; Sá, E.; Ferreira, J.; Martins, V.; Galmarini, S.; Miranda, A. I.; Borrego, C.Five air quality models were applied over Portugal for July 2006 with an ensemble purpose. These models were used, with their own meteorology, parameterizations, boundary conditions and chemical mechanisms, but with the same emission data. The validation of the individual models and its ensemble for ozone (O3) and particulate matter was performed using monitoring data from 22 background stations over Portugal. ...
Bias correction techniques to improve air quality ensemble predictions: focus o...
Monteiro, A.; Ribeiro, I.; Tchepel, O.; Sá, E.; Ferreira, J.; Carvalho, A.; Martins, V.; Strunk, A.; Galmarini, S.; Elbern, H.; Schaap, M.; Builtjes, P.Five air quality models were applied over Portugal for July 2006 and used as ensemble members. Each model was used, with its original set up in terms of meteorology, parameterizations, boundary conditions and chemical mechanisms, but with the same emission data. The validation of the individual models and the ensemble of ozone (O-3) and particulate matter (PM) is performed using monitoring data from 22 backgrou...
The EFFIS forest fire atmospheric emission model: application to a major fire e...
Monteiro, A.; Corti, P.; San Miguel-Ayanz, J.; Miranda, A. I.; Borrego, C.Forest fires are a major contributor of gaseous and particulate compounds to the atmosphere, impairing air quality and affecting human health. A new forest fire emissions module was developed and integrated into the European Forest Fire Information System (EFFIS), which systematically compiles, since 2000, series of burnt area statistics mapped from satellite imagery. This new forest fire emission model was bui...
A review of operational, regional-scale, chemical weather forecasting models in...
Kukkonen, J.; Olsson, T.; Schultz, D. M.; Baklanov, A.; Klein, T.; Miranda, A. I.; Monteiro, A.; Hirtl, M.; Tarvainen, V.; Boy, M.; Peuch, V.-H.Numerical models that combine weather forecasting and atmospheric chemistry are here referred to as chemical weather forecasting models. Eighteen operational chemical weather forecasting models on regional and continental scales in Europe are described and compared in this article. Topics discussed in this article include how weather forecasting and atmospheric chemistry models are integrated into chemical weat...
Reducing NO2 pollution over urban areas: air quality modelling as a fundamental...
Borrego, C.; Monteiro, A.; Sá, E.; Carvalho, A.; Coelho, D.; Dias, D.; Miranda, A. I.Recently, specific air quality problems have been detected in the northern region of Portugal. The nitrogen oxide (NO2) annual limit value has been surpassed at several air quality monitoring stations in the northern region, and according to European legislation, air quality plans must be designed and implemented to reduce those levels. The analysis of the air quality data from the stations concerning NO2 excee...