A5073069111- Climate variability and models
- Oceanographic and Atmospheric Processes
- Marine and coastal ecosystems
- Meteorological Phenomena and Simulations
- Atmospheric and Environmental Gas Dynamics
- Tropical and Extratropical Cyclones Research
- Ocean Waves and Remote Sensing
- Marine and fisheries research
- Arctic and Antarctic ice dynamics
- Coral and Marine Ecosystems Studies
- Cryospheric studies and observations
- Methane Hydrates and Related Phenomena
- Geography and Environmental Studies
- Geology and Paleoclimatology Research
- Coastal and Marine Management
- Ocean Acidification Effects and Responses
- Polar Research and Ecology
- Precipitation Measurement and Analysis
- Marine Biology and Ecology Research
- Coastal and Marine Dynamics
- Marine animal studies overview
- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Hydrology and Drought Analysis
- Water Quality and Pollution Assessment
National Institute for Space Research
2016-2025
University of Southampton
2003
The Center for Weather Forecasting and Climate Studies–Center Ocean–Land–Atmosphere Studies (CPTEC–COLA) atmospheric general circulation model (AGCM) is integrated with nine initial conditions 10 yr to obtain the climate in an ensemble mode. global climatological characteristics simulated by are compared observational data, emphasis given Southern Hemisphere South America. Evaluation of model's performance presented showing systematic errors several variables, anomaly correlation...
Air-sea and air-sea-ice fluxes in the Southern Ocean play a critical role global climate through their impact on overturning circulation oceanic heat carbon uptake. The challenging conditions have led to sparse spatial temporal coverage of observations. This has 'knowledge gap' that increases uncertainty atmosphere ocean dynamics boundary-layer thermodynamic processes, impeding improvements weather models. Improvements will require both process-based research understand mechanisms governing...
Abstract The total spatial coverage of Marine Protected Areas (MPAs) within the Brazilian Economic Exclusive Zone (EEZ) has recently achieved quantitative requirement Aichii Biodiversity Target 11. However, distribution MPAs in EEZ is still unbalanced regarding proportion protected ecosystems, protection goals and management types. Moreover, demographic connectivity between these their effectiveness maintenance biodiversity are not comprehensively understood. An individual-based modeling...
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...
© 2023 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses). Corresponding author: Kyle R. Clem / kyle.clem@vuw.ac.nz
The focus of this work is on small municipalities (population below 50 thousand inhabitants) that cover around 87% the territory Brazilian Legal Amazon (BLA). Based a comprehensive integrated analysis approach using three components hazard (climate extremes from CMIP6 future scenarios), exposure (directly affected population), and vulnerability (subdimensions susceptibility coping/adaptive capacity by multidimensional indicators), latter two current datasets provided official Census IBGE...
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 Southern Ocean (SO) plays a fundamental role in the planet’s climate system, due to its ability absorb and redistribute heat CO2 (an important greenhouse gas). In addition, SO connects three large oceanic basins Pacific, Atlantic, Indian Oceans, it has an nutrient distribution these oceans. However, is poorly sampled, with most measurements made austral spring summer. variability air–sea flux estimated, as well of atmospheric variables this variability. fluxes are calculated using bulk...
The influence of the large-scale climatic variability dominant modes in Pacific and Atlantic on Amazonian rainfall is investigated. composite technique Amazon precipitation anomalies used this work. basis years for these composites arc those period 1960-1998 with occurrences extremes Southern Oscillation (El Niño or La Niña) north/south warm (or cold) sea surface temperature (SST) dipole pattern tropical Atlantic. Warm (cold) means positive (negative) North negative (positive) South Austral...
This paper presents a description of marine atmospheric boundary layer (MABL) and oceanic (OBL) interactions at the Brazil‐Malvinas Confluence. Although this region is known as one most energetic zones World Ocean, very few studies have addressed mechanisms OA interaction there. Based upon novel, direct in situ simultaneous observations, our results show that OBL‐MABL exchanges are closely correlated with sea surface temperature (SST) field. The heat fluxes range from 110 W.m −2 over warm...
This study analyzes and discusses data taken from oceanic atmospheric measurements performed simultaneously at the Brazil‐Malvinas Confluence (BMC) region in southwestern Atlantic Ocean. area is one of most dynamical frontal regions world ocean. Data were collected during four research cruises once a year consecutive years between 2004 2007. Very few studies have addressed importance studying air‐sea coupling BMC region. Lateral temperature gradients as high 0.3°C km −1 surface subsurface....
The Southern Brazilian Continental Shelf (SBCS) is one of the more productive areas for fisheries in waters. water masses and dynamical processes region present a very seasonal behavior that imprint strong effects ecosystem weather area its vicinity. This paper makes use Regional Ocean Modeling System (ROMS) studying mass distribution circulation variability SBCS during year 2012. Model outputs were compared to situ, historical observations satellite data. model was able reproduce main...
The South Atlantic Convergence Zone (SACZ) is responsible for a large amount of the total summer precipitation over Brazil and related with severe droughts extreme floods southeast Brazil. This paper aims to demonstrate feasibility an objective, simplified automated method based on satellite outgoing longwave radiation (OLR) SACZ oceanic (SACZOCN) detection characterize their climatological features. dates characteristics (intensity size) detected by algorithm have been made available first...
Abstract The South Atlantic Convergence Zone (SACZ) is an atmospheric system occurring in austral summer on the America continent and sometimes extending over adjacent Atlantic. It characterized by a persistent very large, northwest-southeast-oriented, cloud band. Its presence ocean causes sea surface cooling that some past studies indicated as being produced decrease of incoming solar heat flux induced extensive cover. Here we investigate ocean–atmosphere interaction processes Southwestern...
Abstract The influence of the cross‐shelf oceanographic front occurring between Brazil Current (BC) and Brazilian Coastal (BCC) on local Marine Atmospheric Boundary Layer (MABL) is investigated here. This typical wintertime in Southern Continental Shelf (SBCS) this first time that its effects are over above MABL. Here we analyze variability, vertical structure, stability MABL as well heat fluxes at air‐sea interface, across five transects SBCS made during a winter 2012 cruise. Local thermal...
In this study we investigate how the modulation of surface wind‐stress by tropical instability waves (TIWs) feeds back onto TIWs and plays a role in their fundamental properties. An ocean general circulation model is used, that reproduces qualitatively well properties when forced climatological winds, although with 30% underestimated amplitude. The coupled to atmosphere through simple parameterization wind stress response SST. simulations are compared those without active coupling. Active...
Abstract The influence of the Brazil‐Malvinas Confluence (BMC) region on marine atmospheric boundary layer (MABL) is investigated through in situ data analysis five different cruises (2004 to 2008) and numerical experiments with a regional model. Two groups were performed order evaluate relevance static stability hydrostatic balance physical mechanisms for MABL instability. first group used monthly climatological sea surface temperature (SST) as bottom condition while second daily updated...
The East Continental Shelf (ECS) of Brazil is a hotspot endemism and biodiversity reef biota in the South Atlantic, hosting number Marine Protected Areas (MPAs). Connectivity MPAs through larval dispersal influences recruitment, population dynamics, genetic structure biogeography coral ecosystems. protected ecosystem ECS was investigated with hydrodynamic model (ROMS) forcing an Individual Based Model (IBM—Ichthyop), used groupers (genus Mycteroperca) as functional group. output from ROMS...