Satellite-based estimates of groundwater storage variations in large drainage basins with extensive floodplains.
This study presents monthly estimates of groundwater anomalies in a large river basin dominated by extensive floodplains, the Negro River Basin, based on the synergistic analysis using multisatellite observations and hydrological models. For the period 2003-2004, changes in water stored in the aquif...
por Portal Padrão
publicado
22/08/2011
1:43 PM
Impact of global warming on the geobotanic zones: an experiment with a statistical-dynamical climate model.
In this study, a zonally-averaged statistical climate model (SDM) is used to investigate the impact of global warming on the distribution of the geobotanic zones over the globe. The model includes a parameterization of the biogeophysical feedback mechanism that links the state of surface to the atmo...
por Portal Padrão
publicado
22/08/2011
1:42 PM
Forecast of solar energy resource by using neural network methods.
This work aims at discussing the artificial neural networks (ANN) and some applications in renewable energy assessment. First, the paper describes the statistical relevance of this tool in different areas of knowledge and the main ANN concepts and configurations. Finally, the paper presents and disc...
por Portal Padrão
publicado
22/08/2011
1:40 PM
Modelling and numerical simulation of the velocity field in the Parque Estadual do Cantão (TO), Brazil.
The Parque Estadual do Cantão is located at Tocantins (TO), north of Brazil, in a delta formed by the rivers Javaés, Coco and Araguaia. It is a wetland where the seasonal changes drive the biogeochemistry cycles. The knowledge of the water flux dynamics is very important for the understanding of t...
por Portal Padrão
publicado
22/08/2011
1:38 PM
Evaluation of mesoscale convective systems in South America using multiple satellite products and an object-based approach.
In this study, an object-based verification method was used to reveal the existence of systematic errors in three satellite precipitation products: Tropical Rainfall Measurement Mission (TRMM), Climate Prediction Center Morphing Technique (CMORPH), and Precipitation Estimation from Remotely Sensed I...
por Portal Padrão
publicado
22/08/2011
1:36 PM
Os números (surpreendentes) de mortes por raios no Brasil.
Em termos de estações do ano, a maior parte das mortes ocorreu no verão. Na verdade, 77% das mortes se deram no verão e na primavera, períodos do ano em que se registrou cerca de 80% dos raios no Brasil. O 5 de março de 2003 foi a data em que se registrou o maior número de fatalidades nos úl...
por Portal Padrão
publicado
22/08/2011
1:35 PM
Ornithophagy in rhinella icterica (SPIX, 1824).
Reportamos um evento de ornitofagia por Rhinella icterica sobre Certiaxis cinnamomeus ocorrido em 2010, na região central do Estado do Rio Grande do Sul (29°41S, 53°48W), Brasil. ABSTRACT: In this work we report an observation of an ornitophagy event on Certhiaxis cinnamomeus by Rhinella icterica...
por Portal Padrão
publicado
22/08/2011
1:33 PM
Fuzzy logic and geostatistical techniques for spatialization of soil texture in region with rough terrains.
From the geotechnical standpoint, it is interesting to analyse the soil texture in regions with rough terrain due to its relation with the infiltration and runoff processes and, consequently, the effect on erosion processes. The purpose of this paper is to present a methodology that provides the soi...
por Portal Padrão
publicado
22/08/2011
1:32 PM
Chemical composition at atmospheric particulate matter soluble fraction and meteorological variables in São Paulo state, Brazil.
The objective of this work was to characterize and compare the chemical composition of the PM10 soluble fraction in relation to meteorological variables such as wind direction and air masses backward trajectories. The PM10 was collected during winter of 1999 in two contrasting sites: the São Paulo ...
por Portal Padrão
publicado
22/08/2011
1:30 PM
Desafios a um desenvolvimento sustentável em Aquidauana, Pantanal mato-grossense, Brasil: contradições e confusões no território das águas.
O texto se refere ao município de Aquidauana, localizado no centro-oeste de Mato Grosso do Sul. Pensá-lo no contexto atual de crise(s) anunciada(s), considerando sua formação territorial, é um exercício de combinação que abrange a interpretação de suas recentes transformações sócio-espa...
por Portal Padrão
publicado
22/08/2011
1:29 PM
Environmental factors associated with long-term changes in chlorophyll-concentration in the Amazon floodplain.
Long-term environmental time series of continuously collected data are fundamental to identify and classify pulses and determine their role in aquatic systems. This paper presents in situ daily mean chlorophyll-a concentration time series, key information for the current understanding of carbon flux...
por Portal Padrão
publicado
22/08/2011
1:20 PM
Multi-agent simulator for urban segregation (MASUS): a tool to explore alternatives for promoting inclusive cities.
Urban segregation represents a significant barrier to achieving social inclusion in cities. To mitigate this problem, it is necessary to implement policies founded upon a better understanding of segregation dynamics. This paper proposes MASUS, a multi-agent simulator for urban segregation, which pro...
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