A5009331522- Geology and Paleoclimatology Research
- Climate variability and models
- Marine and coastal ecosystems
- Oceanographic and Atmospheric Processes
- Paleontology and Stratigraphy of Fossils
- Isotope Analysis in Ecology
- Atmospheric and Environmental Gas Dynamics
- Methane Hydrates and Related Phenomena
- Geochemistry and Geologic Mapping
- Clinical Nutrition and Gastroenterology
- Healthcare Systems and Challenges
- Geological formations and processes
- Cryospheric studies and observations
- Evolution and Paleontology Studies
- Geological and Tectonic Studies in Latin America
- Hydrocarbon exploration and reservoir analysis
- Arctic and Antarctic ice dynamics
UNSW Sydney
2022-2025
University of Tasmania
2025
Universidade de São Paulo
2020-2022
Universidade do Estado do Rio de Janeiro
2016
Abstract Abrupt climate change events during the last glacial period and Last Interglacial (LIG) resulted from changes in Atlantic Meridional Overturning Circulation (AMOC). Over 50 years, there is some evidence that AMOC has weakened, it projected to weaken further or even collapse this century driven by increase atmospheric greenhouse gases. However, impact of an weakening on Australasian hydroclimate still unclear, particularly under a warmer than pre‐industrial (PI). Using ACCESS‐ESM1.5...
Thermodynamic arguments imply that global mean rainfall increases in a warmer atmosphere; however, dynamical effects may result more significant diversity of regional precipitation change. Here we investigate changes the mid-Pliocene Warm Period (~ 3 Ma), time when temperatures were 2-3ºC than pre-industrial era, using output from Pliocene Model Intercomparison Projects phases 1 and 2 sensitivity climate model experiments. In Mid-Pliocene simulations, higher rates warming northern hemisphere...
Western Boundary Currents (WBCs) are important for the oceanic transport of heat, dissolved gases and nutrients. They can affect regional climate strongly influence dispersion distribution marine species. Using state-of-the-art models from latest previous Climate Model Intercomparison Projects, we evaluate upper ocean circulation examine future projections, focusing on subtropical low-latitude WBCs. Despite their coarse resolution, successfully reproduce most large-scale features with...
Abstract. The mid-Pliocene warm period (3.264–3.025 Ma) is the most recent geological during which atmospheric CO2 levels were similar to historical values (∼400 ppm). Several proxy reconstructions for show highly reduced zonal sea surface temperature (SST) gradients in tropical Pacific Ocean, indicating an El Niño-like mean state. However, past modelling studies do not these gradients. Efforts understand climate dynamics have led Pliocene Model Intercomparison Project (PlioMIP). Results...
Past trends in the strength of Atlantic Meridional Overturning Circulation (AMOC) are still debated, and its fate under global warming is uncertain. Observational studies suggest that there has been persistent weakening since mid-twentieth century, whereas CMIP models systematically simulate a stable circulation. Here, using Earth System eddy-permitting coupled ocean–sea-ice models, we show freshening subarctic Ocean overturning circulation increase temperature salinity South on...
Abstract The El Niño Southern Oscillation (ENSO) is the strongest pattern of year-to-year climate variability found in equatorial Pacific Ocean with global impacts. However, it not fully understood how ENSO responds to different warming scenarios. In warmer (~2-3K) mid-Pliocene Warm Period (~3 Ma BP), models consistently suggest a weakening variability, mean reduction 25% (±16%). We show that near unanimous across cannot be explained simply by state changes Ocean. Instead, robust...
The South Atlantic (SA) circulation plays an important role in the oceanic teleconnections from Indian, Pacific and Southern oceans to North Atlantic, with inter-hemispheric exchanges of heat salt. Here, we show that large-scale features SA are projected change significantly under 'business as usual' greenhouse gas increases. Based on 19 models Coupled Model Intercomparison Project phase 5 there is a weakening upper ocean interior transport (<1000 m) between 15° ∼32°S, largely related wind...
Abstract. The El Niño-Southern Oscillation (ENSO) is the dominant mode of tropical climate variability. Understanding its sensitivity to states societal and ecosystem importance given unabated global warming. Paleoclimate archives models suggest that ENSO activity depends on mean state conditions. However, due model biases, short observational record proxy-data uncertainties, evaluating remains challenging. Here we combine state-of-the-art simulations past climates future warming evaluate...
Abstract. The mid-Pliocene warm period (3.264–3.025 Ma) is the most recent geological during which atmospheric CO2 levels were similar to historical values (~400 ppm). Several proxy reconstructions for show highly reduced zonal sea surface temperature (SST) gradients in tropical Pacific Ocean, indicating an El Niño-like mean state. However, past modelling studies do not these gradients. Efforts understand climate dynamics have led Pliocene Model Intercomparison Project (PlioMIP). Results...
&lt;p&gt;One of the most remarkable features mid-Pliocene climate is polar amplified warming, which occurred at a higher magnitude in Northern than that Southern Hemisphere. In this study, we use PlioMIP models, including phases one and two, to investigate how differing rates warming between Hemispheres affect Hemisphere climate. Through energetic constraints for position Inter-Tropical Convergence Zone (ITCZ), find there consistent northward shift ITCZ mid-Pliocene, accompanied by...
Abstract IPCC projections indicate that El Niño/Southern Oscillation (ENSO) variability will increase throughout the 21st century under global warming. However, magnitude of greatly varies among models. Here we use paleoclimate model simulations 4th phase Paleoclimate Model Intercomparison Project (PMIP4) to constrain projected ENSO and propose a common mechanism explain changes climate states. We show is unprecedented in warm climates past ~3.3 million years operates bi-stable regime...