4 documents found, page 1 of 1
Saharan dust electrification perceived by a triangle of atmospheric electricity...
Silva, Hugo; Lopes, Francisco; Pereira, Sergio; Nicoll, Kery; Barbosa, Susana; Conceição, Ricardo; Neves, Samuel; Harrison, GilesAtmospheric Electric Potential Gradient (PG) measurements were carried out in three sites forming a triangular array in Southern Portugal. The campaign was performed during the summer, characterized by Saharan dust outbreaks; 16the17th July 2014 dust event is considered. Short time-scale oscillations of the PG at two of the stations and a mid time-scale suppression of the PG in the three stations are found. Res...
Atmospheric electrical field measurements near a fresh water reservoir and the ...
Lopes, Francisco; Silva, Hugo; Salgado, Rui; Nicoll, Keri; Harrison, GilesIn order to access the effect of the lakes in the atmospheric electrical field, measurements have been carried out near a large man-made lake in southern Portugal, the Alqueva reservoir, during the ALqueva hydro-meteorological EXperiment 2014. The purpose of these conjoint experiments was to study the impact of the Alqueva reservoir on the atmosphere, in particular on the local atmospheric electric environment ...
Interactions lake-atmosphere: The ALEX 2014 field campaign and numerical simula...
Salgado, Rui; Potes, Miguel; Albino, André; Apolinário, João; Barbosa, Susana; Bárias, Samuel; Beliche, Paulo; Bortoli, Daniel; Canhoto, PauloThe ALqueva hydro-meteorological EXperiment, ALEX 2014, was an integrated field campaign with measurements of chemical, physical and biological parameters in water and air at different experimental sites in the region of the Alqueva reservoir, a 250 km2 man made lake, in the southeast of Portugal. The Field campaign took place from June 1 to September 30, 2014 and comprises an Intensive Observation Period (IOP)...
ALEX2014: The Alqueva Hydro-Meteorological Experiment
Salgado, Rui; Potes, Miguel; Albino, André; Apolinário, João; Barbosa, Susana; Bárias, Samuel; Beliche, Paulo; Bortoli, Daniel; Canhoto, PauloDuring the four months of the ALEX 2014, the over water fluxes of momentum, heat and mass (H2O and CO2) were obtained with an integrated Open-Path CO2 /H2O Gas Analyser and 3D Sonic Anemometer, mounted on a floating platform (Fig.1) belonging to the Portuguese Environment Agency. The short and long wave, up and down, radiative fluxes were measured at the same place, as well as the water temperature profile. Eig...