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Lightning attachment process to common buildings
The physical mechanism of lightning attachment to grounded structures is one of the most important issues in lightning physics research, and it is the basis for the design of the lightning protection systems. Most of what is known about the attachment process comes from leader propagation models tha...- por Portal Padrão
- publicado
- 05/06/2017
- 5:09 PM
Land system science in Latin America: challenges and perspectives.
This article reviews the current status, trends and challenges of land system science in Latin America. We highlight the advances in the conceptualization, analysis and monitoring of land systems. These advances shift from a focus on the relationships between forests and other land uses to include a...- por Portal Padrão
- publicado
- 05/06/2017
- 3:51 PM
Main ozone-forming VOCs in the city of Sao Paulo: observations, modelling and impacts.
High-ozone concentrations currently represent the main air pollution problem in the city of São Paulo, Brazil. To elucidate the main volatile organic compounds (VOCs), which act as ozone precursors, samples from air quality monitoring stations were evaluated. Thirty-five samples were collected in A...- por Portal Padrão
- publicado
- 05/05/2017
- 3:43 PM
Extreme floods increase CO2 outgassing from a large Amazonian river.
Large Amazonian rivers are characteristically subject to seasonal floods. We examine how inundation extent affects the partial pressure of carbon dioxide (pCO2) and CO2 outgassing in the Madeira River, a large tributary to the Amazon River. We show data from nine field campaigns performed between 20...- por Portal Padrão
- publicado
- 05/05/2017
- 3:40 PM
Buffers against inconvenient knowledge: brazilian newspaper representations of the climate-meat link.
Analyzing Brazilian newspapers climate coverage leading up to 2010, this article shows that climate change was framed as an energy problem although energy is a small part of the countrys emissions compared to emissions from land use change and agriculture. Linked to well over half of national emissi...- por Portal Padrão
- publicado
- 08/04/2017
- 9:25 AM
Social cues affect synchronization of male waving displays in a fiddler crab (Crustacea: Ocypodidae).
The influence of social context in animal signals can lead to complex communicational patterns. In particular, the interaction between individuals can lead to intriguing collective dynamics, such as the temporal synchronization of signals. A fascinating example of such temporal synchronization invol...- por Portal Padrão
- publicado
- 06/04/2017
- 2:49 PM
Rainfall changes affect the algae dominance in tank bromeliad ecosystems.
Climate change and biodiversity loss have been reported as major disturbances in the biosphere which can trigger changes in the structure and functioning of natural ecosystems. Nonetheless, empirical studies demonstrating how both factors interact to affect shifts in aquatic ecosystems are still une...- por Portal Padrão
- publicado
- 06/04/2017
- 2:43 PM
Projections of climate change impacts on central America tropical rainforest.
Tropical rainforest plays an important role in the global carbon cycle, accounting for a large part of global net primary productivity and contributing to CO2 sequestration. The objective of this work is to simulate potential changes in the rainforest biome in Central America subject to anthropogeni...- por Portal Padrão
- publicado
- 08/03/2017
- 9:36 AM
Rainwater chemistry and bulk atmospheric deposition in a tropical semiarid ecosystem: the Brazilian Caatinga.
We assessed the rainwater chemistry, the potential sources of its main inorganic components and bulk atmospheric deposition in a rural tropical semiarid region in the Brazilian Caatinga. Rainfall samples were collected during two wet seasons, one during an extremely dry year (2012) and one during a ...- por Portal Padrão
- publicado
- 08/03/2017
- 9:16 AM
Predictive models for post disaster shelter needs assessment.
The assessment of shelter needs of displaced people in the aftermath of major earthquake events is one the main challenges that emergency responders currently have to face. Based on the scale of the disaster, the short-term shelter demand can turn into a temporary housing need for displaced populati...- por Portal Padrão
- publicado
- 07/03/2017
- 9:59 AM
Frequências dos eventos extremos de seca e chuva na Amazônia utilizando diferentes bancos de dados de precipitação.
Nas últimas décadas, o clima da Terra vem apresentando mudanças no seu comportamento, através do aumento da frequência de eventos climáticos extremos, associado muito provavelmente às mudanças climáticas globais, cujo tema tornou-se popular e motivo de discussão do público em geral. Neste...- por Portal Padrão
- publicado
- 07/03/2017
- 9:53 AM
Redes Sociais