Encontrados 19 documentos, a visualizar página 1 de 2
Nearly 20 years of satellite remote sensing at CGE
Costa, Maria João; Salgueiro, Vanda; Potes, Miguel; Couto, Flavio; Santos, Dina; Bortoli, Daniele; Silva, Ana Maria; Antón, Manuel; Mateus, CarlosThe first steps in satellite remote sensing at CGE were made in 1993, in the first years in close cooperation with the Remote Sensing Division of the Institute of Meteorology. The interest in the study of the atmospheric and surface properties using satellite images was first introduced in CGE by Ana Maria Silva and as a first year Master student, the first author here willingly accepted the challenge of develo...
1st Iberian Meeting on Aerosol Science and Technology - RICTA 2013 PROCEEDINGS ...
Costa, Maria João; Silva, Ana Maria; Guerrero-Rascado, Juan Luis; Pereira, Sérgio; Bortoli, Daniele; Salgado, RuiThis Proceedings Book contains the conference communications (oral and poster) received before the editing deadline and presented at the 1st Iberian Meeting on Aerosol Science and Technology (RICTA 2013), which was held from 1-3 July 2013, in Évora, Portugal. The event was simultaneously the VI Reunión Española de Ciencia y Tecnología de Aerosoles and the IV Summer School on Aerosol Science and Technology, in 2...
Flash Flood in Madeira Island in autumn 2012
Couto, Flavio; Salgado, Rui; Costa, Maria JoãoMadeira (32º75'N and 17º 00'W) is a Portuguese mountainous island with the highest peaks above 1800 m, where after the catastrophe of 20 February 2010, which has shown to be vulnerable to the flood occurrences from significant socio-economical losses. Using ground observations and the MESO-NH model, this study investigates the main atmospheric aspects related to the flash flood and landslides occurrences on 05 ...
On the contribution of lakes in predicting near-surface temperature in a global...
Balsamo, Gianpaolo; Salgado, Rui; Dutra, Emanuel; Boussetta, S.; Stockdale, T.; Potes, MiguelThe impact of lakes in numerical weather prediction is investigated in a set of global simulations performed with the ECMWF Integrated Forecasting System (IFS). A Fresh shallow-water Lake model (FLake) is introduced allowing the coupling of both resolved and subgrid lakes (those that occupy less than 50% of a grid-box) to the IFS atmospheric model. Global fields for the lake ancillary conditions (namely lake co...
Global Warming perspectives and new solutions- Editorial
Reis, A. Heitor; Salgado, RuiThe Editorial of The Special Issue of The International Journal of Global Warming, "Global Warming perspectives and new solutions"
A study of intense rainfall events in Madeira Island using numerical Models
Couto, Flavio; Salgado, Rui; Dasari, Hari; Costa, Maria JoãoLocated in Atlantic Ocean, the Madeira Island is the largest island of the Madeira archipelago, with surface area about 737 km2, an approximately E–W elongated form and a maximum altitude of 1861m. This archipelago is a volcanic complex, with peculiar relief and climate as described by many researchers. In recent times, intense rainfall events in Madeira Island have occurred, resulting in several economical and...
NUMERICAL SIMULATIONS OF INTENSE PRECIPITATION IN MADEIRA ISLAND USING THE MESO...
Couto, Flavio; Salgado, Rui; Costa, Maria JoãoExtreme orographic precipitation events are a common cause of natural hazards such as flash floods, landslides, and avalanches in mountainous regions (Roe, 2005), and may be caused by different mechanisms. Situated in the Subtropical Atlantic Ocean (32º 45' N and 17º 00'W), Figure 1, the Madeira Island is the largest island of the Madeira Archipelago, with surface area of 737 km2, a length of 58 km, a 23 km wid...
MODELAÇÃO REGIONAL DO EFEITO RADIATIVO INDIRECTO DE AEROSSÓIS PROVENIENTES DO D...
Santos, Dina; Costa, Maria João; Silva, Ana Maria; Salgado, RuiO Deserto do Sahara é considerado a fonte de aerossóis minerais mais importante no mundo, sendo responsável por cerca de metade das emissões globais de aerossóis do tipo poeiras do deserto (DD). Estas partículas, presentes na atmosfera, interagem com a radiação solar e terrestre, modulando o balanço de radiação da Terra e são responsáveis por grandes incertezas na avaliação do forçamento radiativo [1, 2, 3]. O ...
Satellite remote sensing of water turbidity in Alqueva reservoir and implicatio...
Potes, Miguel; Costa, Maria João; Salgado, RuiThe quality control and monitoring of surface freshwaters is crucial, since some of these water masses constitute essential renewable water resources for a variety of purposes. In addition, changes in the surface water composition may affect physical properties of the lake water, such as temperature, which in turn may impact exchanges with the lower troposphere. The use of satellite remote sensing to estimate w...
Regional Modeling of Saharan Desert Dust Aerosol Indirect Radiative Forcing
Santos, Dina; Costa, Maria João; Silva, Ana Maria; Salgado, RuiConsidering that Sahara desert is considered the most important dust source in the world, being responsible for up to half of the global dust emissions, this work aims to study the effects of Saharan desert dust aerosol storms upon clouds. The method, used in this study, estimates the cloud radiative forcing (aerosol indirect radiative forcing) in the presence of desert dust aerosols during strong desert dust e...
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