One-dimensional simulation of fire injection heights in contrasted meteorological scenarios with PRM and Meso-NH models
Wild-fires release huge amounts of aerosol and hazardous trace gases in the atmosphere. The residence time and the dispersion of fire pollutants in the atmosphere can range from hours to days and from local to continental scales. These various scenario shighly depend on the injection height of smo...
por Portal Padrão
publicado
22/08/2013
4:27 PM
Comparision of ground techniques used to estimate cloud cover in Florianópolis, southern Brazil
Cloud cover is a key feature in Earth images acquired from space. Cloud cover data play a significant role in the weather forecast and climate knowledge, as well as in several human activities. Several studies have been conducted to establish a methodology and experimental setup in order to acquire ...
por Portal Padrão
publicado
22/08/2013
4:25 PM
Características gerais da composição química de mananciais da planície do Araguaia
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por Portal Padrão
publicado
22/08/2013
4:24 PM
Formação de educadores ambientais na gestão de comitê de bacia hidrográfica
O primeiro passo para o gerenciamento participativo das Bacias hidrográficas é identificar os diferentesprotagonistas sociais que atuam na gestão dos recursos hídricos. Para que em seguida, os atores sociais, atravésdo processo de educação ambiental, na capacitação de gestores públicos, t...
por Portal Padrão
publicado
22/08/2013
4:24 PM
Previsão de geada para a região sul do Brasil: uma avaliação do modelo ETA 15 km durante o outono de 2012
Bipolar lightning is usually defined as a lightning flash where the current waveform exhibits a polarity reversal. There are very few reported cases of cloud-to-ground (CG) bipolar flashes using only one channel in the literature. Reports on this type of bipolar flashes are not common due to the fac...
por Portal Padrão
publicado
22/08/2013
4:20 PM
What drives the seasonality of photosynthesis across the Amazon basin? a cross-site analysis of eddy flux tower measurements from the Brasil flux network
We investigated the seasonal patterns of Amazonian forest photosynthetic activity, and the effects thereon of variations in climate and land-use, by integrating data from a network of ground-based eddy flux towers in Brazil established as part of the 'Large-Scale Biosphere Atmosphere Experiment in A...
por Portal Padrão
publicado
22/08/2013
3:22 PM
Lightning parameters for engineering applications
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por Portal Padrão
publicado
22/08/2013
2:38 PM
Lightning enhancement in the Amazon region due to urban activity
Urbanization has an increasing contribution to anthropogenic cl imate forcing. The impact arises mainly from the Urban Heat Island (UHI) effect and aerosol anthropogenic emissions. An important but not completely understood consequence of this forcing is its effect on local lightning activity. Chang...
por Portal Padrão
publicado
22/08/2013
2:34 PM
Thunderstorm incidence in Southeastern Brazil estimated from different data sources
This paper describes a comparative analysis of the thunderstorm incidence in Southeastern Brazil obtained from thunderstorm days observed at two different epochs (from 1910 to 1951 and from 1971 to 1984) and from lightning data provided by the Brazilian lightning location system RINDAT (from 1999 to...
por Portal Padrão
publicado
22/08/2013
2:33 PM
Eutrophication reverses whole-lake carbon budgets
Lakes play a large role in global atmospheric and landscape carbon (C) processes, but their role may change as they become polluted with nutrients. Geographic regions rich in surface waters are also prone to agricultural and urban development and so may become increasingly eutrophic as the populatio...
por Portal Padrão
publicado
22/08/2013
2:31 PM
Identifying problems for choosing suitable areas for installation of a new landfill through GIS technology: a case study
Redes Sociais