WRF-Chem simulations in the Amazon region during wet and dry season transitions: evaluation of methane models and wetland inundation maps
The Amazon region, being a large source of methane (CH4), contributes significantly to the global annual CH4 budget. For the first time, a forward and inverse modelling framework on regional scale for the purpose of assessing the CH4 budget of the Amazon region is implemented. Here, we present forwa...
por Portal Padrão
publicado
22/08/2013
1:23 PM
Contribution of anthropology to the study of climate change
Understanding the challenge that climate change poses and crafting appropriate adaptation and mitigation mechanisms requires input from the breadth of the natural and social sciences. Anthropologys in-depth fieldwork methodology, long engagement in questions of societyenvironment interactions and br...
por Portal Padrão
publicado
22/08/2013
1:20 PM
Surface ecophysiological behavior across vegetation and moisture gradients in tropical South America
Surface ecophysiology at five sites in tropical South America across vegetation and moisture gradients is investigated. From the moist northwest (Manaus) to the relatively dry southeast (P´e de Gigante, state of Sao Paulo) simulated seasonal cycles of latent and sensible heat, and carbon flux pro...
por Portal Padrão
publicado
22/08/2013
1:19 PM
Uso de técnicas de sensoriamento remoto na detecção de processos de degradação de pastagens
Neste trabalho, objetivou-se aplicação de técnicas de sensoriamento remoto na detecção de processos de degradação de pastagens em três microbacias localizadas no município de Guararapes, SP. Para o estudo, utilizou-se uma imagem do satélite Landsat 5 TM do dia 02/02/10 e dados georreferenc...
por Portal Padrão
publicado
22/08/2013
1:17 PM
State of the climate in 2012
For the first time in several years, the El Nino-Southern Oscillation did not dominate regional climate conditions around the globe. A weak La Niña dissipated to ENSO-neutral conditions by spring, and while El Nino appeared to be emerging during summer, this phase never fully developed as sea surfa...
por Portal Padrão
publicado
22/08/2013
1:09 PM
Sustained reduction of the dengue vector population resulting from an integrated control strategy applied in two brazilian cities
Aedes aegypti has developed evolution-driven adaptations for surviving in the domestic human habitat. Several trap models have been designed considering these strategies and tested for monitoring this efficient vector of Dengue. Here, we report a real-scale evaluation of a system for monitoring and ...
por Portal Padrão
publicado
22/07/2013
2:39 PM
Carbon emission as a function of energy generation in hydroelectric reservoirs in Brazilian dry tropical biome
Most energy generation globally is fueled by coal and oil, raising concerns about greenhouse gas emissions. Hydroelectric reservoirs are anthropogenic aquatic systems that occur across a wide geographical extent, and, in addition to their importance for energy production, they have the potential to ...
por Portal Padrão
publicado
22/07/2013
2:31 PM
Bimodality in stable isotope composition facilitates the tracing of carbon transfer from macrophytes to higher trophic levels
Even though the suitability of macrophytes to act as a carbon source to food webs has been questioned by some studies, some others indicate that macrophyte-derived carbon may play an important role in the trophic transfer of organic matter in the food web of shallow lakes. To evaluate the importance...
por Portal Padrão
publicado
22/07/2013
2:25 PM
Land use and land cover map of a semiarid region of Brazil for meteorological and climatic models
An updated vegetation cover and land use map over a semiarid region of Brazil has been produced at a 1 km spatial resolution, using satellite data and remote sensing techniques, for application in climate modeling. The map presents the location and distribution of major vegetation types and non-vege...
por Portal Padrão
publicado
22/06/2013
4:31 PM
Uncertainty assessments of climate change projections over South America
This paper assesses the uncertainties involved in the projections of seasonal temperature and precipitation changes over South America in the twenty-first century. Climate simulations generated by 24 general circulation models are weighted according to the reliability ensemble averaging (REA) approa...
por Portal Padrão
publicado
22/06/2013
4:30 PM
An extensible real-time visualization pipeline for dynamic spatial modeling
This article presents research results of an extensible visualization pipeline for real-time exploratory analysis of spatially explicit simulations. We identify software requirements and discuss the main conceptual and design issues. We propose a protocol for data serialization, a high performance m...
por Portal Padrão
publicado
22/06/2013
3:23 PM
A Study of the long-term variability of thunderstorm days in southeast Brazil
In this report thunderstorm day monthly records obtained in three cities of southeast Brazil (SAo Paulo, Campinas, and Rio de Janeiro) since the 19th century are analyzed. The analysis is complemented by the spatial distribution of lightning in the last decade. For São Paulo and Campinas, data indi...
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