Estudo dos Padrões de Ventos Offshore no Litoral do Ceará Utilizando Dados Estimados pelo Produto de Satélites BSW

Silva, Greicy Kelly da; Santos, Antônio Carlos Santana dos; Silva, Marx Vinícius Maciel da; Alves, José Maria Brabo; Barbosa, Artur Felipe Santos; Freire, Cristiano de Oliveira; Alcântara, Clênia Rodrigues; Sombra, Sérgio Sousa

doi:10.1590/0102-7786324015

Cited by 5 publications

(4 citation statements)

References 2 publications

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“…The low latitude geographic position and absence of upwelling or other oceanographic processes in the area result in limited intra-and inter-annual temperature variations (Da Silva et al, 2017;Soares et al, 2019). The region has two different seasons: rainfall (January to June) and drought (July to December), with high sea temperatures between 26°C and 29°C (Cavalcanti et al, 2009).…”

Section: Study Areamentioning

confidence: 99%

“…The region has two different seasons: rainfall (January to June) and drought (July to December), with high sea temperatures between 26°C and 29°C (Cavalcanti et al, 2009). The winds are also bimodal between the seasons, with weaker westerly and southwestward winds from January to May (average monthly speed of 5.1 m/s in April), and stronger northwestward winds from August to December (average monthly speed of 8.8 m/s between August and September) (Da Silva et al, 2017) which makes oceanographic sampling difficult in the second half of the year.…”

Section: Study Areamentioning

confidence: 99%

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Heatwaves and a decrease in turbidity drive coral bleaching in Atlantic marginal equatorial reefs

Lucas

Teixeira²,

Braga³

et al. 2023

Front. Mar. Sci.

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Tropical reefs can occur naturally under suboptimal environmental conditions, where few reef-building corals thrive. These unique reefs are especially important for understanding resistance to global warming, but they are understudied. We studied a coral bleaching event that occurred in turbid reefs (~ 19 m deep) in the equatorial southwestern Atlantic. Mass bleaching was observed in 91% of the Siderastrea stellata colonies in 2020, whereas only 7.7% of the colonies were bleached in 2019 and 10.9% in 2022. The year 2020 had the highest heat stress recorded in this century in this region according to the degree of heating weeks such as 17.6°C-week. In the first semester of 2020, the region also underwent three marine heatwaves (MHWs) above the average temperatures (1.3, 1.5, and 2.0°C). The lowest turbidity and wind speed matched long-lasting, repeated, and severe MHWs. These reef-building corals are dominant under moderate turbid waters and high sea temperature (26–29°C), however they are near the maximum tolerance limit. In this regard, these low-latitude reefs are warming twice as fast (0.2°C/decade) as other regions (e.g., Abrolhos and Coral Coast) (0.1 to 0.13°C/decade) in the South America reef system demonstrating that they cannot be considered climate-change refugia. These results suggest that even turbid marginal reefs and tolerant corals are highly susceptible to mass bleaching, especially when heatwaves and a decrease in turbidity occur simultaneously.

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Section: Study Areamentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Heatwaves and a decrease in turbidity drive coral bleaching in Atlantic marginal equatorial reefs

Lucas

Teixeira²,

Braga³

et al. 2023

Front. Mar. Sci.

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“…Contributions from industrial emissions were not analyzed. However, the contributions to Fortaleza from stationary sources are expected to be relatively low due to the location of the industrial sources outside the city and the dominant wind directions, reported by Silva et al, (2017).…”

Section: Based On Default Vehicle Emission Factors For Ospm and Adjus...mentioning

confidence: 99%

Evaluation of OSPM against air quality measurements in Brazil – the case study of Fortaleza, Ceará

Dias

Bertoncini

Cavalcante

et al. 2021

Journal of the Air & Waste Management Association

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The contribution of vehicle emissions to air pollution is considered a large environmental and health problem in big Brazilian cities caused, among others, by slow renewal of the old vehicle fleet. Brazilian studies usually only consider traffic-related issues in transportation analysis, with minor assessments of emissions and close to non-existent assessment of air quality. On this background, this research aimed to calibrate and evaluate the Operational Street Pollution Model (OSPM ® ) to Brazilian conditions by implementing Brazilian emission factors. The urban background concentrations were modelled with the Urban Background Model (UBM) as part of the air quality system (THOR -AirPAS). In this case, we used meteorological data from a ground meteorological station outside Fortaleza processed by meteorological pre-processor and regional background concentrations from the Integrated Forecast System (IFS) as input to UBM.New air quality measurements were collected in busy streets of the city of Fortaleza during the year of 2017. The study collected samples of daily NO2 and PM10 concentrations to evaluate OSPM daily estimations. In addition, a transportation travel demand model (TRANUS) has been calibrated to the case study area with observed traffic data collected, in order to provide Annual Average Daily Traffic (AADT) as inputs to OSPM ® . Two sets of emission factors were evaluated. Official Brazilian emission factors were applied to OSPM ® , as well as adjusted emission factors derived in the project based on calibration that were higher than the official emission factors. Data showed that concentrations are significantly influenced by meteorological factors (such as temperature, wind speeds, wind directions), and especially precipitation for PM10 concentrations. OSPM ® simulated results showed concentration levels and patterns close to air quality measurements with default emission factors and calibrated emission for UBM but large underestimations if official emissions were used for both UBM and OSPM.

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“…The NEB atmosphere is influenced by aerosols and gases emitted locally as well as transported from other regions. The main meteorological systems that influence the region, and consequently the atmospheric aerosol loading, are the Inter-tropical Convergence Zone (ITCZ), onshore and offshore sea breezes, instability lines (IL), as well as westerly waves, among others [41]. Figure 1 shows the area of Northeast Brazil and the aerosol inflow region.…”

Section: Description Of the Region And Local Datasetsmentioning

confidence: 99%

Analysis of Atmospheric Aerosol Optical Properties in the Northeast Brazilian Atmosphere with Remote Sensing Data from MODIS and CALIOP/CALIPSO Satellites, AERONET Photometers and a Ground-Based Lidar

et al. 2019

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A 12-year analysis, from 2005 to 2016, of atmospheric aerosol optical properties focusing for the first time on Northeast Brazil (NEB) was performed based on four different remote sensing datasets: the Moderate Resolution Imaging Spectroradiometer (MODIS), the Aerosol Robotic Network (AERONET), the Cloud-Aerosol LIDAR with Orthogonal Polarization (CALIOP) and a ground-based Lidar from Natal. We evaluated and identified distinct aerosol types, considering Aerosol Optical Depth (AOD) and Angström Exponent (AE). All analyses show that over the NEB, a low aerosol scenario prevails, while there are two distinct seasons of more elevated AOD that occur every year, from August to October and January to March. According to MODIS, AOD values ranges from 0.04 to 0.52 over the region with a mean of 0.20 and occasionally isolated outliers of up to 1.21. Aerosol types were identified as sea spray, biomass burning, and dust aerosols mostly transported from tropical Africa. Three case studies on days with elevated AOD were performed. All cases identified the same aerosol types and modeled HYSPLIT backward trajectories confirmed their source-dependent origins. This analysis is motivated by the implementation of an atmospheric chemistry model with an advanced data assimilation system that will use the observational database over NEB with the model to overcome high uncertainties in the model results induced by still unvalidated emission inventories.

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Estudo dos Padrões de Ventos Offshore no Litoral do Ceará Utilizando Dados Estimados pelo Produto de Satélites BSW

Cited by 5 publications

References 2 publications

Heatwaves and a decrease in turbidity drive coral bleaching in Atlantic marginal equatorial reefs

Heatwaves and a decrease in turbidity drive coral bleaching in Atlantic marginal equatorial reefs

Evaluation of OSPM against air quality measurements in Brazil – the case study of Fortaleza, Ceará

Analysis of Atmospheric Aerosol Optical Properties in the Northeast Brazilian Atmosphere with Remote Sensing Data from MODIS and CALIOP/CALIPSO Satellites, AERONET Photometers and a Ground-Based Lidar

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