101 documents found, page 1 of 11
Four Years of Atmospheric Boundary Layer Height Retrievals Using COSMIC-2 Satel...
Garnés-Morales, Ginés; Costa, Maria João; Bravo-Aranda, Juan Antonio; Granados-Muñoz, Maria José; Salgueiro, Vanda; Abril-Gago, JesusThis work aimed to study the atmospheric boundary layer height (ABLH) from COSMIC-2 refractivity data, endeavoring to refine existing ABLH detection algorithms and scrutinize the resulting spatial and seasonal distributions. Through validation analyses involving different ground-based methodologies (involving data from lidar, ceilometer, microwave radiometers, and radiosondes), the optimal ABLH determination re...
Fine and coarse dust radiative impact during an intense Saharan dust outbreak o...
López-Cayuela, M.A.; Córdoba-Jabonero, C.; Sicard, M.; Abril-Gago, J.; Salgueiro, Vanda; Comerón, A.; Granados-Muñoz, M.J.; Costa, Maria JoãoMineral dust has a key role in the Earth’s radiative balance, and it has become significant over the Iberian Peninsula (IP), where Saharan dust outbreaks have seemed to increase in frequency and intensity. This study quantifies the dust direct radiative effect (DRE) in the short-wave range (SW) during an intense persistent springtime dust episode over the IP. In particular, the vertical distribution of dust opt...
Large-Scale Network-Based Observations of a Saharan Dust Event across the Europ...
Papanikolaou, Christina-Anna; Papayannis, Alexandros; Gidarakou, Marilena; Abdullaev, Sabur F.; Ajtai, Nicolae; Baars, Holger; Balis, DimitrisBetween 14 March and 21 April 2022, an extensive investigation of an extraordinary Saharan dust intrusion over Europe was performed based on lidar measurements obtained by the European Aerosol Research Lidar Network (EARLINET). The dust episode was divided into two distinct periods, one in March and one in April, characterized by different dust transport paths. The dust aerosol layers were studied over 18 EARLI...
Fine and coarse dust radiative impact during an intense Saharan dust outbreak o...
López-Cayuela, María-Ángeles; Córdoba-Jabonero, Carmen; Sicard, Michaël; Abril-Gago, Jesús; Salgueiro, Vanda; Comerón, AdolfoMineral dust has a key role in the Earth’s radiative balance, and it has become significant over the Iberian Peninsula (IP), where Saharan dust outbreaks have seemed to increase in frequency and intensity. This study quantifies the dust direct radiative effect (DRE) in the short-wave range (SW) during an intense persistent springtime dust episode over the IP. In particular, the vertical distribution of dust opt...
Optical study of soil samples contaminated by heavy metals from the São Domingo...
Oliveira, Rui Jorge; Teixeira, Pedro; Caldeira, Bento; Borges, José Fernando; Costa, Maria João; Bortoli, Daniele; Potes, Miguel; Rodrigues, GonçaloThe study of soils contaminated by heavy metals (HMs) is a hard task that implies the collecting of soil samples in an area representative of the contaminated space. For example, for water samples, the law requires the creation of a study grid with 5 ha spacing. Considering this spacing requirement, to the soil from the São Domingos Mine, that have an area of approximately 2000 ha, we need to collect 400 sample...
Livro de Resumos da 11ª Assembleia Luso Espanhola de Geodesia e Geofísica
Caldeira, Bento; Bortoli, Daniele; Duarte, Ediclê; Buforn, Elisa; Carrilho, Fernando; Couto, Flávio; Ribeiro, Helena; Sobrino, José AntónioLivro de Resumos da 11ª Assembleia Luso Espanhola de Geodesia e Geofísica
Livro de Resumos Estendidos da 11a Assembleia Luso-Espanhola de Geodesia e Geof...
Oliveira, Rui; Caldeira, Bento; Bortoli, Daniele; Guerrero-Rascado, Juan; Costa, Maria João; Bezzeghoud, Mourad; Salgueiro, VandaA publicação do Livro de Resumos Estendidos da 11a Assembleia Luso-Espanhola de Geodesia e Geofísica (ALEGG 2024) que decorreu na Universidade de Évora, de 24 a 27 de junho de 2024, reuniu investigadores de referência para a partilha de resultados nas mais variadas disciplinas. A ALEGG 2024 representou um momento crucial para a comunidade científica luso-espanhola, promovendo a partilha de conhecimentos, a disc...
Monthly Convective Boundary Layer Height Study over Brazil Using Radiosonde, ER...
de Arruda Moreira, Gregori; Pérez Herrera, María Jesús; Garnés Morales, Ginés; Costa, Maria João; Cacheffo, Alexandre; Carbone, SamaraAlthough the atmospheric boundary layer height (ABLH) is a highly relevant parameter for various meteorological studies, the analysis of its behavior remains undersampled in South America, especially in Brazil. In this context, this work presents a monthly characterization of the ABLH during the convective period (Convective Boundary Layer Height-CBLH) using radiosonde data and a comparison between the monthly ...
Understanding Mineral Dust Through a Doctoral Alliance
Marenco, Franco; Amiridis, Vasilis; Costa, Maria João; Kandler, Konrad; Kazadzis, Stelios; Klose, Martina; Pérez García-Pando, Carlos; Ryder, ClaireWe present an example of how a doctoral network can bring together multidisciplinary expertise and novel scientific advances in atmospheric dust. This network (Dust-DN) has started operations and is a strategic alliance of high-profile partners, able to leverage unique facilities for atmospheric research and innovative space missions. The network aims to improve our understandings of dust processes and microphy...
O deserto veio à cidade
Costa, Maria João; Capelo, Sofia; Bortoli, Daniele; Salgueiro, PedroAs poeiras provenientes do deserto (Norte de África) assolam com alguma frequência o território português e constituem um dos eventos naturais com maior predominância. A observação deste evento traduz-se pela poeira que se deposita nas superfícies (carros, casas, ruas) e, também, pelos efeitos que provoca na radiação solar. O registo fotográfico permite constatar o efeito ótico gerado, que é comprovado pela med...