Synthesis of nitrogen fixation rates across major biomes in Latin America.
Biological nitrogen fixation (BNF) is the main pathway by which nitrogen (N) is delivered to unmanaged ecosystems. Despite the importance of BNF on understanding and modeling key ecosystem functions such as carbon storage and climate feedbacks, information on BNF rates for natural ecosystems in Lati...
por Portal Padrão
publicado
10/05/2018
11:55 AM
Effect of land use and land cover on greenhouse gas emissions from peatlands in the Paraíba Valley, Brazil.
Peatlands cover around 570 million hectares worldwide and although most are located in boreal environments, tropical peatlands cover 170 million hectares and store about 860 Gt of carbon. Peat soils store a large amount of carbon and have acted as sinks of atmospheric CO2 for thousands of years but ...
por Portal Padrão
publicado
10/05/2018
11:54 AM
Advances in the RaioSAT project: detecting lightning from space using a nanosatellite.
Advances in the RaioSAT project: detecting lightning from space using a nanosatellite....
por Portal Padrão
publicado
10/05/2018
11:53 AM
Do upward positive connecting leaders compete during the approach of a negative downward leader?
Do upward positive connecting leaders compete during the approach of a negative downward leader? ...
por Portal Padrão
publicado
10/05/2018
11:52 AM
Do positive leaders propagate in a stepped fashion? a case study.
Do positive leaders propagate in a stepped fashion? a case study....
por Portal Padrão
publicado
10/05/2018
11:52 AM
Observation of a lightning flashover with a high-speed video camera.
In this paper we analyze images of a lightning flashover induced by a downward negative lightning flash that struck a transmission line located in São Paulo, Brazil. The lightning flash and the flashover were recorded by a high-speed camera running at 10,000 images per second. The approach of the n...
por Portal Padrão
publicado
10/05/2018
11:50 AM
Testing environmental models supported by machine learning.
In this paper we present a new methodology, DaOBML, to test environmental models whose outputs are complex artifacts such as images (maps) or plots. Our approach suggests several test data generation techniques (Combinatorial Interaction Testing, ModelBased Testing, Random Testing) and digital image...
por Portal Padrão
publicado
10/05/2018
11:49 AM
Sustainable development and socioeconomic inclusion in areas of water source protection.
One of the consequences of climate change is the intensification of extreme events, including increased storms in some regions and extended droughts in others. In 2014, the megacity of São Paulo, in the southeastern part of Brazil, experienced a critical water crisis. The magnitude of it left milli...
por Portal Padrão
publicado
10/05/2018
11:47 AM
First high speed lightning observations in Johannesburg, South Africa.
First high speed lightning observations in Johannesburg, South Africa....
por Portal Padrão
publicado
10/05/2018
11:46 AM
High-speed video observation of lightning flashes over Johannesburg, South Africa 2017 – 2018.
South Africa has a long history of lightning research. Tall towers provide a useful tool for investigating lightning as they generally have a high repeatability of events. The Johannesburg region in the Gauteng province has two tall towers, the Brixton tower and the Hillbrow tower, with a high frequ...
por Portal Padrão
publicado
10/05/2018
11:44 AM
Analysis of the charge distribution and leaders inside the cloud for upward flashes initiation.
Analysis of the charge distribution and leaders inside the cloud for upward flashes initiation....
por Portal Padrão
publicado
10/05/2018
11:43 AM
Comparison of optical emission from Cloud-to-Ground Lightning observed by High-Speed Camera and Geostationary Lightning Mapper (GLM).
Comparison of optical emission from Cloud-to-Ground Lightning observed by High-Speed Camera and Geostationary Lightning Mapper (GLM). ...
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