A5100350095- Solar Radiation and Photovoltaics
- Earthquake Detection and Analysis
- Solar Thermal and Photovoltaic Systems
- Photovoltaic System Optimization Techniques
- Lightning and Electromagnetic Phenomena
- Seismic Waves and Analysis
- Atmospheric aerosols and clouds
- Seismology and Earthquake Studies
- earthquake and tectonic studies
- Magnetic properties of thin films
- Quantum and electron transport phenomena
- Solar and Space Plasma Dynamics
- Urban Heat Island Mitigation
- Ionosphere and magnetosphere dynamics
- Meteorological Phenomena and Simulations
- Impact of Light on Environment and Health
- Geological and Geophysical Studies Worldwide
- Energy and Environment Impacts
- Atmospheric chemistry and aerosols
- Radioactivity and Radon Measurements
- Air Quality Monitoring and Forecasting
- Air Quality and Health Impacts
- Noise Effects and Management
- Photovoltaic Systems and Sustainability
- Oceanographic and Atmospheric Processes
University of Évora
2015-2024
Institute of Mechanical Engineering and Industrial Mangement
2022-2024
Eletrobras (Brazil)
2017
University of Bristol
2014-2015
Instituto de Ciências da Terra
2015
Instituto Federal de Goiás
2014
Universidade do Porto
2005-2010
University of Algarve
2008-2009
Aixtron (Germany)
2008
National University of San Juan
2006
The Global atmospheric Electric Circuit (GEC) is a fundamental coupling network of the climate system connecting electrically disturbed weather regions with fair across planet. GEC sustains electric field (or potential gradient, PG) which present globally and can be measured routinely at surface using durable instrumentation such as modern mills, are now widely deployed internationally. In contrast to lightning or magnetic fields, PG cannot remotely. Despite existence many datasets (both...
The impact of long range Saharan dust transport, arising from one event in February and other March 2017, on the performance photovoltaic flat panels is reported as a case study soiling. Through satellite images, coming north Africa was detected, while using Hybrid Single-Particle Lagrangian Integrated Trajectory, specific origin locations were found. Dust accumulated glass coupons deployed Southern Portugal, Évora Alter do Chão, analysed by Scanning Electron Microscopy Energy Dispersive...
Abstract Responses of the AC and DC global electric circuits (GECs) to large eruption Hunga Tonga‐Hunga Ha'apai (HT‐HH) volcano on 15 January 2022 are discussed. The AC‐related investigation is based Schumann resonance (SR) measurements from six stations four continents. DC‐related utilizes atmospheric field (potential gradient, PG) recording in Europe USA. According data GLD360 WWLLN lightning detection networks, peak stroke rate, 83/s, was dominated by negative polarity lightning, but...
Abstract. In the last years disturbances in VLF/LF radio signals related to seismic activity have been presented. The data were collected by receivers located on ground or satellites. ground-based research implies systematic collection a network of receivers. Since 2000 "Pacific VLF network", conducted Japanese researchers, has operation. During 2008 receiver was developed Italian factory Elettronika (Palo del Colle, Bari). is equipment working and LF bands. It can monitor 10 frequencies...
The weekly dependence of pollutant aerosols in the urban environment Lisbon (Portugal) is inferred from records atmospheric electric field at Portela meteorological station (38°47'N, 9°08'W). Measurements were made with a Bendorf electrograph. data set exists 1955 to 1990, but due contaminating effect radioactive fallout during 1960 and 1970s, only period between 1980 1990 considered here. Using relative difference method found these records, which shows an increasing trend 1990. This...
Soiling is a problem for solar energy harvesting technologies, such as in photovoltaic modules technologies. This paper describes not only one complete year of Ratioindex and rates measured rural environment Southern Europe, but also focuses on the seasonal variation type soiling, mainly spring summer. The Ratio index calculated based maximum power output short circuit current two (PV) panels, along with Scanning Electron Microscopy Energy Dispersive X-Ray glass samples to provide visual...
Soiling is a factor of major importance regarding any solar energy conversion technology, as in Photovoltaic (PV) panels and, namely, concentrated power (CSP), since scattering due to particle deposition severely reduces the mirror's reflectance. Concerned with this problem, collaboration between Renewable Energies Chair, University Évora, Portugal and Institut de Recherche en Energie Solaire et Nouvelles, Morocco, was created investigate compare soiling mirrors both locations. This research...
Abstract. In this paper, we report the observation of a significant decrease vertical component atmospheric electrical field in Évora region (Portugal) during M = 4.1 Sousel earthquake 27 March 2010. The epicentre was 52 km from site, which falls within theoretical preparation radius. A simple interpretation based on hypothetical radon emissions is presented, and future experiments required to elucidate these observations are outlined. To our knowledge, first reported preceding an earthquake.
Turbulent and convective processes within the planetary boundary layer are responsible for transport of moisture, momentum particulate matter, but also important in determining electrical charge lower atmosphere. This paper presents first high resolution vertical profiles during fair weather conditions, obtained with instrumented radiosonde balloons over Alqueva, Portugal summer 2014. The short intervals (4 h) between balloon flights enabled diurnal variation profile to be examined detail,...
Short-term forecasts of direct normal irradiance (DNI) from the Integrated Forecasting System (IFS) and global numerical weather prediction model European Centre for Medium-Range Weather Forecasts (ECMWF) were used in simulation a solar power tower, through Advisor Model (SAM). Recent results demonstrated that DNI have been enhanced, having potential to be suitable tool plant operators allows achieving higher energy efficiency management concentrating (CSP) plants, particularly during...
Planar capacitor structures based on granular films composed of nanometric ferromagnetic grains embedded in an insulating Al2O3 matrix can switch between a high-conductance and low-conductance state. The switching properties are induced by forming process. ON/OFF resistance ratio is as high 104 under electrical field only 15 kV/m. This resistive accompanied capacitive two well-defined voltage-independent states, behavior that not readily explained the filamentary type conduction.