Luciana Prado

Luciana Prado
University of São Paulo | USP · Oceanographic Institute (IO) (São Paulo)

PhD, Paleoclimatology
Collaborator Professor - University of São Paulo & Research Fellow - University of Brasília

About

32
Publications
5,858
Reads
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301
Citations
Additional affiliations
April 2020 - present
University of São Paulo
Position
  • PostDoc Position
April 2017 - December 2019
University of Brasília
Position
  • PostDoc Position
January 2011 - March 2015
University of São Paulo
Position
  • PhD Student
Education
February 2011 - February 2015
University of São Paulo
Field of study
  • Oceanography
February 2009 - January 2011
University of São Paulo
Field of study
  • Meteorology
February 2004 - December 2008
University of São Paulo
Field of study
  • Meteorology

Publications

Publications (32)
Article
Full-text available
Central Brazil hydroclimate is in the core region of the South American Monsoon System. Thus, understanding precipitation variability in this area is crucial not only for the prediction of extreme events such as droughts and floods, but also for water resources management. Ocean teleconnections influence Central Brazil precipitation from intraseaso...
Article
Full-text available
Natural hazards, such as droughts and floods, are the main challenge for research related to water resource management worldwide. Understanding how the climate affects the occurrence and propagation of droughts can assist in water management. This study aimed to investigate the occurrence and characteristics of meteorological and hydrological droug...
Article
Full-text available
Abstract Polar regions are among the most affected areas by the current global warming. In the Southern Hemisphere (SH), impacts of a warmer climate include decrease in sea-ice extent, changes in oceanic and in atmospheric circulation. Recently, some of these impacts were reinforced by the positive phase of the Southern Annular Mode (SAM). SAM is t...
Article
Full-text available
We characterized the PM10 sampled in Distrito Federal (DF), Central Brazil, an area close to agricultural processes, the Amazon Forest and impacted by biomass burning. We quantified the water-soluble ions (Na⁺, K⁺, Mg²⁺, Ca²⁺, Cl⁻, NO3⁻, SO4²⁻), elements (Al, Ba, Cu, P, Zn), total carbon, ¹³C isotope and identified its morphology from January 2018...
Preprint
Full-text available
This study presents a trend analysis related to a Cerrado Region in Brazil surrounded by multiple climatic influences and which lived a recent water crisis (2016-2018). This crisis could be associated with climatic changes or population growth. To verify the first possibility, an analysis was performed on a series of rainfall data (21 rain gauges s...
Article
Full-text available
The Southern Annular Mode (SAM, also known as the Antarctic Oscillation—AAO) explains most of the climate variability in the Southern Hemisphere. A ring pattern in mean sea level pressure (MSLP) or 500 hPa geopotential height around Antarctica characterizes SAM. Differences of MSLP values between SH mid and high latitudes define positive and negati...
Article
Full-text available
The northern hemisphere experienced an abrupt cold event ~ 8200 years ago (the 8.2 ka event) that was triggered by the release of meltwater into the Labrador Sea, and resulting in a weakening of the poleward oceanic heat transport. Although this event has been considered a possible analogue for future ocean circulation changes due to the projected...
Article
Full-text available
The South Atlantic subtropical dipole (SASD) has an impact on South American rainfall particular during its negative phase when continental precipitation in the northern part of the continent is enhanced. Relying on a series of single forcing transient simulations since the last deglaciation, we differentiate the relative role of meltwater, orbital...
Article
Climate anomalies due to Lake Agassiz outbursts and Hudson Bay ice dome melting are commonly considered triggers of North American atmospheric cooling. However, in the Southern Hemisphere, these freshwater fluxes are mostly associated with increased precipitation and a possible intensification of the South American Monsoon System (SAMS). Here, we t...
Article
Full-text available
Lacustrine sediments in a poorly documented region regarding to lake sedimentation and paleo-environments (Bangladesh) were investigated using a multiproxy approach. Pukurpara Lake is located in eastern Bangladesh at an elevation of 360 m above sea level with a maximum water depth of 28 m. An age-depth model allowed us to investigate the changes in...
Article
Full-text available
This study evaluates interannual-to-decadal sea surface temperature (SST) variability in the mid-Pliocene Warm Period within the Pliocene Model Intercomparison Project (PlioMIP). Our results show significantly reduced variability at low latitudes and mid-latitudes in the mid-Pliocene in comparison to the pre-industrial climate. At high latitudes of...
Conference Paper
Full-text available
Paleoclimate studies in different temporal and spatial scales provide important information on long-term statistics required to test hypotheses about climate changes. Comprehensive high-quality data sets and a solid understanding of dynamic climate processes in different temporal variations are essential to evaluate the sensitivity of the climatic...
Article
Full-text available
Recent paleoclimatic studies suggest that changes in the tropical rainbelt across the Atlantic Ocean during the past two millennia are linked to a latitudinal shift of the Intertropical Convergence Zone (ITCZ) driven by the Northern Hemisphere (NH) climate. However, little is known regarding other potential drivers that can affect tropical Atlantic...
Article
Full-text available
Recent paleoclimatic studies suggest that changes in the tropical rainbelt across the Atlantic Ocean during the past two millennia are linked to a latitudinal shift of the Intertropical Convergence Zone (ITCZ) driven by the Northern Hemisphere (NH) climate. However, little is known regarding other potential drivers that can affect tropical Atlantic...
Conference Paper
Full-text available
South American Monsoons System (SAMS) is an important feature of South American climate. In order to evaluate the response of SAMS to Lake Agassiz collapse, we analyzed a set of eight SST reconstructions along the Brazilian and African Coast and four speleothem δ O records along South America. Additionally the Simulation of Transient Climate Evolut...
Article
Full-text available
Climate responses to volcanic eruptions include changes in the distribution of temperature and precipitation such as those associated with El Niño Southern Oscillation (ENSO). Recent studies suggest an ENSO-positive phase after a volcanic eruption. In the Atlantic Basin, a similar mode of variability is referred as the Atlantic Niño, which is relat...
Conference Paper
Full-text available
The Mid-Pliocene Warm Period (MPWP, 3.3-3.0 Ma) was characterized by a warmer climate, higher CO 2 atmospheric concentrations (∼400 ppmv), and a decreased ice sheets cover when compared to pre-industrial conditions. Warmer past climates may be used for a better understanding of present-day climate, and projecting future climate changes. In this sen...
Conference Paper
Full-text available
Climatic changes and their socio-environmental impacts are an issue of constant debate. Instrumental data collected over the last 150 years show a positive linear trend in global temperature, where the last decade was the warmest one. This observed increase in the mean global temperature impacts in the atmospheric and oceanic circulation, and it ha...
Conference Paper
Cenários de aquecimento global semelhantes ao observado desde o início do século XX já foram observados em climas passados e podem contribuir para maior compreensão dos mecanismos envolvidos na relação entre temperatura e CO2. O Período Quente do Plioceno médio (PQPM; 3,29 a 2,97 Milhões de anos Antes do Presente, Ma A.P.) apresentou razão de mistu...
Conference Paper
Full-text available
Erupções vulcânicas podem alterar o clima global, dependendo da localização do vulcão, da época do ano, e da quantidade de material injetado na atmosfera. Erupções explosivas, como dos vulcões Samalas (1258 da Era Comum, E.C.) e Tambora (1815 E.C.), injetam aerossóis de enxofre na atmosfera, que causam aquecimento da estratosfera e resfriamento da...
Conference Paper
Full-text available
Muito se discute sobre as atuais mudanças do clima e seus impactos socioambientais. Dados instrumentais dos últimos 150 anos mostram uma tendência de aumento de temperatura global que pode gerar impactos no balanço hídrico global. Contudo, pouco se conhece sobre os impactos regionais dessas mudanças globais. A isso se deve a baixa densidade de regi...
Conference Paper
Full-text available
Regimes de monção possuem grande importância socioeconômica, por gerar grande parte da precipitação de uma região. A variabilidade da monção se deve a variações internas e a forçantes externas. O vulcanismo é uma das forçantes externas que perturbam o regime de monção. Erupções vulcânicas injetam grandes quantidades de aerossóis de enxofre na estra...
Article
Full-text available
Climate indices based on sea surface temperature (SST) can synthesize information related to physical processes that describe change and variability in continental precipitation from floods to droughts. The South Atlantic Subtropical Dipole index (SASD) is based on the distribution of SST in the South Atlantic and fits these criteria. It represents...
Conference Paper
Full-text available
The study of the variability patterns of the South Atlantic Basin is necessary to understand and predict the global climate because of its fundamental role in global climate control through heat transport to the North. As early as 330 years ago, the importance of the continental heat budget on the equatorial Atlantic Ocean driving the trade winds i...
Article
The mean precipitation fields for eastern South America from eight mid-Holocene (6 ka) simulations, part of the third phase of Palaeoclimate Modeling Intercomparison Project (PMIP3) and the fifth phase of the Coupled Model Intercomparison Project (CMIP5), are evaluated. These simulations were compared to a new multiproxy compilation of 120 previous...
Article
Full-text available
The mid-Holocene (6000 calibrated years before present) is a key period in palaeoclimatology because incoming summer insolation was lower than during the late Holocene in the Southern Hemisphere, whereas the opposite happened in the Northern Hemisphere. However, the effects of the decreased austral summer insolation over South American climate have...
Article
This work analyzes the relationship between climatic index and rainfall in the Northeastern (NE) and Southern (S) Brazil, in decadal timescale. The climatic indices were obtained from the reanalysis data from NCEP/NCAR (National Center for Environmental Prediction/National Center for Atmospheric Research) between 1948 and 2008. Subsequently, (indic...
Data
The mid-Holocene (6000 calibrated years before present) is a key period in palaeoclimatology because incoming summer insolation was lower than during the late Holocene in the Southern Hemisphere, whereas the opposite happened in the Northern Hemisphere. However, the effects of the decreased austral summer insolation over South American climate have...
Article
Full-text available
The Mid-Holocene (6 ka BP) is a key period to the study of climate, since it presented lower than present incoming summer insolation in the Southern Hemisphere, and the opposite in the Northern Hemisphere. This happened due to a different than present configuration of the orbital parameters. To investigate the effects of insolation on the Mid-Holoc...
Article
Full-text available
RESUMO Este trabalho apresenta o estudo de caso de um ciclone anômalo que ocorreu na fronteira do Brasil com o Uruguai, sobre o continente, e que possuía características anômalas para a região, como deslocamento para sul/sudoeste e perfil vertical híbrido de temperatura do núcleo. A análise de vorticidade potencial apontou para duas intrusões de ar...

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Projects

Projects (3)
Project
The purpose of this study is to determine links between West African Monsoon and the Amazon hydroclimate related to Tropical Atlantic perturbations during the Green Sahara period.
Project
Recent global warming is associated with climate changes from low to high latitudes. Decrease in sea ice and modified tropical hydroclimates are observed in the last century, with important socioeconomic impacts. However, warmer climates have already occurred in Earth’s history, recording different responses from the climate system, due to distinct forcings and boundary conditions involved. In this sense, the Last Interglacial (LIG, ~ 129,000-116,000 years Before Present) consists of an analog to the current interglacial, initiated ~11,000 years ago until present. As no anthropogenic forcing was acting during the LIG, it is possible to identify natural variability associated with global warming. Due to the teleconnections existing between tropics and polar regions during the current climate, we propose to examine these relationships during the LIG, focusing on the links between the Southern Ocean and Northeast Brazil.
Project
Contribuir com o entendimento do clima da América do Sul durante o Holoceno e, em particular da região central do Brasil, o presente projeto pretende investigar registros paleoclimáticos lacustres no Distrito Federal e entorno.