A5034508286- Climate variability and models
- Meteorological Phenomena and Simulations
- Oceanographic and Atmospheric Processes
- Complex Systems and Time Series Analysis
- Tropical and Extratropical Cyclones Research
- Marine and coastal ecosystems
- Ecosystem dynamics and resilience
- Atmospheric and Environmental Gas Dynamics
- Geology and Paleoclimatology Research
- Plant Water Relations and Carbon Dynamics
- Hydrology and Drought Analysis
- Comparative International Legal Studies
- Complex Network Analysis Techniques
- Opinion Dynamics and Social Influence
- Marine and fisheries research
- Legal processes and jurisprudence
- Precipitation Measurement and Analysis
- Neural Networks and Applications
- Ocean Waves and Remote Sensing
- Comparative constitutional jurisprudence studies
- Nonlinear Dynamics and Pattern Formation
- Human Rights and Immigration
- Corporate Insolvency and Governance
- Atmospheric Ozone and Climate
- Climate Change Policy and Economics
Universidad de la República
2015-2024
Universidad La República
2008-2023
Max Planck Institute for the Physics of Complex Systems
2022
Universitat Politècnica de Catalunya
2022
Universitat de Barcelona
2017
Princeton University
2004-2011
Columbia University
2006
NOAA Geophysical Fluid Dynamics Laboratory
2006
National Oceanic and Atmospheric Administration
2006
Yale University
2006
During the early Pliocene, 5 to 3 million years ago, globally averaged temperatures were substantially higher than they are today, even though external factors that determine climate essentially same. In tropics, El Niño was continual (or "permanent") rather intermittent. The appearance of northern continental glaciers, and cold surface waters in oceanic upwelling zones low latitudes (both coastal equatorial), signaled termination those warm conditions end permanent Niño. This led...
Abstract More than 40 model groups worldwide are participating in the Coupled Model Intercomparison Project Phase 6 (CMIP6), providing a new and rich source of information to better understand past, present, future climate change. Here, we use Earth System Evaluation Tool (ESMValTool) assess performance CMIP6 ensemble compared previous generations CMIP3 CMIP5. While CMIP5 models did not capture observed pause increase global mean surface temperature between 1998 2013, historical simulations...
Abstract The current generation of coupled climate models run at the Geophysical Fluid Dynamics Laboratory (GFDL) as part Climate Change Science Program contains ocean components that differ in almost every respect from those contained previous generations GFDL models. This paper summarizes new physical features and examines simulations they produce. Of two model versions 2.1 (CM2.1) 2.0 (CM2.0), CM2.1 represents a major improvement over CM2.0 most oceanic examined, with strikingly lower...
We use ordinal patterns and symbolic analysis to construct global climate networks uncover long- short-term memory processes. Data analyzed are the monthly averaged surface air temperature (SAT field), results suggest that time variability of SAT field is determined by oscillatory behavior repeat from time, with a periodicity related intraseasonal oscillations El Niño on seasonal-to-interannual scales.
Abstract Marine heatwaves (MHWs), considered as one when temperatures warmer than the 90th percentile based on a 30‐year historical baseline period are registered for five or more consecutive days, can have devastating ecosystem and socioeconomic consequences. MHWs were studied in Southwestern Atlantic shelf (32–38°S) using daily sea surface between 1988 2017. More half of days with occurred since 2014. The most intense event happened austral summer 2017, reaching 26.8 °C, 1.7 °C above...
Interannual and decadal variability of the South Atlantic convergence zone (SACZ) during austral summer [season January–February–March (JFM)] is investigated. An attempt made to separate forced from internal variability. This accomplished by applying a signal-to-noise optimization procedure an ensemble multidecadal integrations latest version NCAR Community Climate Model (CCM3) with observed SST. The result yields two dominant atmospheric responses: local response SST anomalies...
Abstract We describe a new, state‐of‐the‐art, Earth System Regional Climate Model (RegCM‐ES), which includes the coupling between atmosphere, ocean, and land surface, as well hydrological ocean biogeochemistry model, with capability of using variety physical parameterizations. The regional coupled model has been implemented tested over some COordinated climate Downscaling Experiment (CORDEX) domains more settings featuring climatically important phenomena. ocean‐atmosphere models can be...
An estimate of the net direction climate interactions in different geographical regions is made by constructing a directed network from regular latitude-longitude grid nodes, using directionality index (DI) based on conditional mutual information (CMI). Two datasets surface air temperature anomalies—one monthly averaged and another daily averaged—are analyzed compared. The links are interpreted terms known atmospheric tropical extra-tropical variability patterns. Specific relevant selected,...
We analyze solutions to the stochastic skeleton model, a minimal nonlinear oscillator model for Madden-Julian Oscillation (MJO). This has been recognized its ability reproduce several large-scale features of MJO. In previous studies, model's forcings were predominantly chosen be mathematically simple and time-independent. Here, we present with time-dependent observation-based forcing functions. Our results show that these more realistic functions, successfully replicates key characteristics...
Abstract. We analyze solutions to the stochastic skeleton model, a minimal nonlinear oscillator model for Madden-Julian Oscillation (MJO). This has been recognized its ability reproduce several large-scale features of MJO. In previous studies, model's forcings were predominantly chosen be mathematically simple and time-independent. Here, we present with time-dependent observation-based forcing functions. Our results show that these more realistic functions, successfully replicates key...
Air–sea interaction in the region of South Atlantic Convergence Zone (SACZ) is studied using Granger causality (GC) as a measure directional coupling. Calculation area weighted connectivity indicates that SACZ one with largest mutual air–sea south basin during summertime. Focusing on leading mode daily coupled variability, GC allows distinguishing four regimes characterized by different coupling: there are years which forcing mainly directed from atmosphere to ocean, ocean forces atmosphere,...
Leading hypotheses for abrupt climate changes are focused on the ocean response to a freshening of surface waters in north Atlantic. The degree which such affects deep, slow thermohaline, rather than shallow, swift, wind-driven circulations ocean, and hence that high low latitudes, differ from model model, depending factors as treatment diffusive processes oceans. Many comprehensive models biased confine influence mainly thermohaline circulation northern climates. Simulations paleoclimates...