A5060221418- Climate variability and models
- Oceanographic and Atmospheric Processes
- Coastal and Marine Dynamics
- Tropical and Extratropical Cyclones Research
- Coastal and Marine Management
- Arctic and Antarctic ice dynamics
- Ocean Waves and Remote Sensing
- Atmospheric and Environmental Gas Dynamics
- Cryospheric studies and observations
- Aeolian processes and effects
- Geological formations and processes
- Meteorological Phenomena and Simulations
- Marine and coastal ecosystems
- Geography and Environmental Studies
- Atmospheric Ozone and Climate
- Coastal wetland ecosystem dynamics
- Geophysics and Gravity Measurements
- Solar and Space Plasma Dynamics
- Environmental Chemistry and Analysis
- Phosphorus and nutrient management
- Marine and environmental studies
- Agricultural and Environmental Management
- Ocean Acidification Effects and Responses
- Marine and Offshore Engineering Studies
- Water Treatment and Disinfection
Universidade Federal do Maranhão
2018-2025
Universidad Filadelfia de México
2023
National Institute for Space Research
2012-2022
Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão
2022
National Institute of Industrial Technology
2019
Universidade Federal do Rio Grande do Sul
2009-2012
Instituto de Geociencias
2012
The region under study is regularly subject to the occurrence of storms associated with frontal systems and extratropical cyclones, since it located near one cyclogenetic regions in South America. These can generate storm surges that cause anomalous high sea level rises on Cassino Beach. use reanalysis data along an efficient technique for location cyclone, using a vorticity threshold, has provided new classification based upon trajectories events produce positive variation. Three patterns...
Abstract Sea surface temperature (SST) anomalies caused by a warm core eddy (WCE) in the Southwestern Atlantic Ocean (SWA) rendered crucial influence on modifying marine atmospheric boundary layer (MABL). During first cruise to support Antarctic Modeling and Observation System (ATMOS) project, WCE that was shed from Brazil Current sampled. Apart traditional meteorological measurements, we used Eddy Covariance method directly measure ocean–atmosphere sensible heat, latent momentum, carbon...
The oceanic South Atlantic Convergence Zone (SACZ) has played a major role during America's 2021/2022 summer extreme rainy season, being responsible for more than 90% of the precipitation in some regions Southeast Brazil and Southwestern Ocean (SWA). was unique rare considered an abnormally humid season as verified by official Brazilian Institutes. First, unusual number cases SACZ episodes (seven), highest recorded last decade. Second, all that occurred were assumed characteristics...
The Antarctic sea ice concentration (SIC) plays a crucial role in global climate dynamics by influencing atmospheric and oceanic circulation. This study examines SIC variability its relationship with major modes, including the El Niño-Southern Oscillation (ENSO), Pacific-South American (PSA) pattern, Southern Annular Mode (SAM), Dipole (ADP). Using NSIDC satellite-derived data ERA5 reanalysis from 1980 to 2022, we analyzed anomalies Weddell, Ross, Bellingshausen Amundsen (B&A) Seas,...
The study analyzed the influence of Atlantic Niño on precipitation anomalies in Maranhão from 1980 to 2020. Using index, 20 events were identified, predominantly with 2- 8-year scales. A significant reduction was noted 2000s, likely due weakening Bjerknes feedback and Multidecadal Oscillation. However, 2019 2021 suggested that negative phase Oscillation may have contributed reactivation after 19 inactive years. early termination event “non-canonical”, positive sea surface temperature North...
Abstract The study analyzes the sensitivity and memory of Southern Hemisphere coupled climate system to increased Antarctic sea ice (ASI), taking into account persistence maxima in current climate. mechanisms involved restoring balance under two sets experiments, which differ regard their models, are discussed. experiments perturbed with extremes ASI integrated for 10 yr a large 30-member ensemble. results show that an maximum is able persist ~4 climate, followed by negative phase....
Abstract Several atmospheric variables are directly influenced by oceanic conditions, mainly the sea surface temperature (SST). SST trends and variability over southwestern Atlantic (SWA) have affected South American climate, principally monsoonal period (austral summer). This study analysed SWA for all seasons. In addition, possible large‐scale triggers of austral summer's warmest straight impacts these SSTs on climate were investigated. The results showed a significant positive trend...
The shortage of observational ocean wave data in the South Atlantic (SA) Ocean has resulted numerical modelling becoming most used tool for investigation climate this oceanic region. In article, global model WAve Model (WAM) is to simulate waves SA from June 2006 July 2007 with high time resolution. four leading modes significant height, swell, peak period and surface wind velocity based on empirical orthogonal functions (EOF) singular value decomposition (SVD) methods are computed analysed....
The propagation of the astronomical tide in Maranhense Gulf, Brazil, emphasizes its importance for coastal management, navigation safety shallow waters and exploration energy potential tides. methodology adopted this research includes a detailed harmonic analysis to identify most significant tidal components evaluate their influence on amplitude variations, addition examining phase differences between strategic points region. results reveal predominance semidiurnal tides highlight...
This article analyzes the climate vulnerability of seaports through a bibliometric review 45 articles published between 2012 and 2023. The research highlights increase in publications focusing on port infrastructure to impacts, topic that previously received less attention compared operational, economic, logistical factors, which are frequently discussed existing literature. analysis reinforces relevance this study, with United States, Spain, Kingdom emerging as most influential countries...
This study investigated the spatial patterns of atmospheric circulation associated with surface air temperature variability trends between Antarctic Peninsula and South America, during austral summer (1979-2020). The first mode shows a positive score trend, warming in northern southern America. is mainly positive/neutral Southern Annular Mode La Niña phases. There an anomalous low pressure Southeast Pacific, strengthening (weakening) polar (subtropical) jet and/or south/southwest...
Global climate change is expected to increasingly affect climate-sensitive sectors of society, such as the economy and environment, with significant impacts on water, energy, agriculture fisheries. This case in South America, whose highly dependent agricultural sector. Here, we analyzed sensitivity American positive extremes Antarctic sea ice (ASI) extent volume at continental regional scales. Sensitivity ensemble experiments were conducted GFDL-CM2.1 model compared ERA-Interim reanalysis...
The objective of this research was to characterize the distribution dissolved nutrients at six sampling stations in estuary Anil River (ARE) and bottom sediment. study area is influenced by a tropical climate semidiurnal macrotidal regime. Sampling surface water sediment performed main channel distributed along rainy period (May 9th) dry (October 5th) during spring. Physical variables were collected with aid HANNA HI-8424 multi-parameter probe (water temperature, salinity, pH, oxygen,...
As praias arenosas da Ilha do Maranhão localizam-se em ambiente macromaré, confinadas entre falésias e desenbocaduras fluviais. A morfodinâmica destas varia função regime de precipitações região, com periodicidade semi-anual tendo a ZCIT como principal sistema meteorológico. O objetivo deste estudo foi caracterizar os sedimentos mesolitoral das oceânicas (Ponta Areia, São Marcos, Calhau, Olho D’Água, Meio, Araçagy Mangue Seco Carimã) abrigadas (Guia Panaquatira) Maranhão. Para tal,...
Na orla oceânica de São Luís a topografia antecedente controla morfologia costeira atual, consolidando através do declive regional, orientação da linha costa em relação aos ventos, ondas, e por meio variações locais herdadas vales interflúvios que criam reentrâncias promontórios ou projeções costeiras. As praias estudadas integram um sistema barreiras costeiras anexadas (mainland beach barriers) onde falésias Formação Itapecuru são aflorantes na costa, evidenciando processo erosivo longo...
Na Ilha do Maranhão os sistemas de barreiras costeiras podem ser divididos em dois morfotipos principais: (i) Barreiras Praias Anexadas, que se caracterizam por uma praia anexada transversalmente a topografia antecedente exibindo um gradiente íngreme onde há perda contínua areia na costa erodida; e (ii) Esporões Arenosos ligadas Cabeços Promontórios, sistema laguna-barreira-esporão ancorado longitudinalmente à antecedente. Este último morfotipo origina-se amplo transporte sedimentos via...
The variability of Antarctic sea ice (ASI) has great potential to affect atmospheric circulation, with impacts that can extend from the surface middle and high levels troposphere. present study evaluated response South Atlantic tropospheric circulation increased coverage in area volume ASI. Monthly data air temperature, zonal meridional wind mean level pressure were obtained two ensemble simulations performed GDFL/CM2.1 model, covering period July 2020 June 2030. In general, ASI showed...
This paper aims to analyze the relationships among tropical (Atlantic Meridional Mode - AMM), subtropical (South Atlantic Subtropical Gradient SASG), and extratropical (Southern Annular SAM) teleconnection patterns, Weddell Sea (WS) sea ice extents, climate in South America. Warm anomalies are observed most of America for maximum WS extent combinations (negative SAM/positive AMM negative SASG composites), with an opposite signal at minimum (positive SAM/negative positive SASG). Over Southern...