16 documents found, page 1 of 2
Variabilidade espaço-temporal da concentração de clorofila-a no Oceano Atlântic...
Galvão, Pedry Frederico; Teixeira, Carlos Eduardo PeresThis study aims to describe the spatial and temporal variability of chlorophyll of Western Equatorial Atlantic Ocean (WEA) based on the analysis of 11 years (2002-2012) of sea surface color (SSC) data collected by the sensor Moderate Resolution Imaging Spectroradiometer (MODIS). The annual and semi-annual variability of the SSC were estimated based on a harmonic analysis using least squares fit. A low pass filt...
Exposure time and connectivity in the Baía de Todos os Santos, Brazil
Teixeira, Carlos Eduardo Peres; Lessa, Guilherme Camargo; Santana, RafaelWe applied the Regional Ocean Modeling System (ROMS) to simulate the circulation within Baía de Todos os Santos (BTS). Using lagrangian particle tracking, we performed sensitive studies to compare the importance of the winds (W), tides (T) and fresh water and heat fluxes (FWHF) to the exposure time and connectivity in BTS. We added tracking particles to three sectors of the bay (upper, middle and entrance) and ...
The impact of different forcing agents on the residual circulation in Baía de T...
Teixeira, Carlos Eduardo Peres; Lessa, Guilherme Camargo; Santana, Rafael CostaThis study investigates the forcing of the residual circulation in Baía de Todos os Santos (BTS), surrounded by the third largest metropolis in Brazil. The Regional Ocean Modeling System (ROMS) was used to investigate the roles of the tide (TD), wind (WN), net heat flux (HF), freshwater flux (WF) and river discharge (RD) on the residual circulation. We forced the model in the boundaries with tidal elevations an...
Vrginie Biophysical couplings in South Australian shelf waters under conditions...
Seuront, Seuront; Leterme, Sophie; Middleton, John; Byrne, Shaun; James, Charles; Luick, John; Nedoncelle, Karine; Patterson, JamesThe Southern Australia Integrated Marine Observing System, or SAIMOS, is one of five nodes operating as part of the Australia-wide Integrated Marine Observing System (IMOS). This collaborative program is designed to observe Australia’s oceans, both coastal and bluewater. Since February 2008 Physical Data has been collected for SAIMOS in both summer and winter months during 8 surveys. The data collected during s...
The influence of the Southern Annular Mode (SAM) over the sea surface temperatu...
Teixeira, Carlos Eduardo Peres; Lentini, Carlos Alessandre Domingos; Mata, Mauricio MagalhãesSea surface temperature (SST) is shown to be an important key player to the studying of air-sea interaction phenomenon and in the determination of the regional and global climate variability. [...]
The most extensive oil spill registered in tropical oceans (Brazil): the balanc...
Soares, Marcelo Oliveira; Teixeira, Carlos Eduardo Peres; Bezerra, Luis Ernesto Arruda; Rabelo, Emanuelle Fontenele; Castro, Italo BragaThis article presents a synthesis of information about the massive oil spill in Brazil (2019/2020). The event afected 11 states; however, the majority of the oil residue was collected (~ 5380 tons) near nine states (99.8%) in northeastern Brazil. This spill was not the largest in volume (between 5000 m3 and 12,000 m3 ) recorded in tropical oceans, but it was the most extensive (2890 km). This spill develops an ...
Oil and plastic spill: 2021 as another challenging year for marine conservation...
Magalhães, Karine Matos; Rosa Filho, José Souto; Teixeira, Carlos Eduardo Peres; Coelho-Jr, Clemente; Lima, Maria Cecilia SantanaAfter two years of the most extensive (2890 km of coastline affected) oil spill on the Brazilian coast (2019), a new event of unknown origin brought about 1.3 tons of plastics and oil to the Fernando de Noronha Archipelago; formed by 21 oceanic islands with high endemism, productivity and unique ecosystems such as rich seagrass and rhodolith beds and the only insular mangrove ecosystem in the South Atlantic. Th...
Thermal stress and tropical reefs: mass coral bleaching in a stable temperature...
Soares, Marcelo de Oliveira; Teixeira, Carlos Eduardo Peres; Ferreira, Sarah Maria Cavalcante; Gurgel, Anne Larisse Alves RebouçasThis study reports on the deepest records (~ 24 m depth) of coral bleaching in a naturally temperature-stable environment (> 26 °C with an intra-annual variability of ~ 2 °C), which was recorded during a mass bleaching event in the locally dominant, massive scleractinian coral Siderastrea stellata in equatorial waters of Brazil (SW Atlantic). An inter-annual analysis (2002– 2017) indicated that this bleaching e...
A homage to the past aiming at the future
Rossi, Sergio; Cotovitz Junior, Luiz Carlos; Sousa, Paulo Henrique Gomes de Oliveira; Tavares, Tallita Cruz Lopes; Teixeira, Carlos Eduardo PeresAre the oceans dying? This is a question that many people are asking themselves more and more insistently. The answer is that in no case are they dying – but they are being transformed. Deeply. Unfortunately, this transformation has changed the ocean for a worst stage in terms of overall quality. Human-induced changes across the globe affect marine more than terrestrial ecosystems. And, at sea, there is a probl...
The data we need for the ocean we want to predict: a brazilian perspective
Teixeira, Carlos Eduardo PeresA Predicted Ocean is one of the UN Ocean Decade goals. Ocean observations and numerical simulations of the ocean circulation are at the heart of this outcome. Numerical models are used to understand the present and predict future ocean states, but also the human impact on it, among many other uses. However, its results are only a representation of reality, and we need to validate the numerical model outputs wit...