A5065567930- Climate variability and models
- Tropical and Extratropical Cyclones Research
- Ocean Waves and Remote Sensing
- Meteorological Phenomena and Simulations
- Fire effects on ecosystems
- Seismology and Earthquake Studies
- Seismic Waves and Analysis
- Hydrology and Drought Analysis
- Seismic Imaging and Inversion Techniques
- Flood Risk Assessment and Management
- Geological and Geophysical Studies Worldwide
- Earthquake Detection and Analysis
- Disaster Management and Resilience
- Climate Change and Environmental Impact
University of Lisbon
2020-2025
Instituto Dom Luiz
2023
Portugal is regularly affected by destructive wildfires that have severe social, economic, and ecological impacts. The total burnt area in 2017 (∼540,000 ha) marked the all-time record value since 1980 with a tragic toll of 114 fatalities occurred June October events. local insurance sector declared it was costliest natural disaster payouts exceeding USD295 million. Here, event, responsible for more than 200,000 ha 50 analyzed from compound perspective. A prolonged drought led to...
State-of-the-art climate models project a substantial decline in precipitation for the Mediterranean region future1. Supporting this notion, several studies based on observed data spanning recent decades have suggested decrease precipitation2–4, with some attributing large fraction of change to anthropogenic influences3,5. Conversely, certain researchers underlined that exhibits considerable spatiotemporal variability driven by atmospheric circulation patterns6,7 maintaining stationarity...
It is known that some extreme weather events are associated with the appearance of large-scale blocking patterns (e.g. heatwaves and droughts), while others linked to cut-off low systems often occur on southern flanks precipitation, intense snow storms). These quasi-stationary high-pressure disrupt atmospheric flow, producing significant influencing surface impacts. However, identifying tracking blocks challenging due their diverse dynamics.BLOCS (Blocking Location Obstruction Cataloguing...
Wildfires are disturbances that occur in ecosystems, both naturally and derived from anthropogenic factors, often caused by extreme meteorological conditions, have recurrently destructive impacts on forests throughout the world. The complex nature of interactions between wildfires, their dynamics, human interference a climate change perspective has motivated growing number researchers to address this topic. fire weather index (FWI) been extensively used analyze link danger its local regional...
The Fire Weather Index (FWI) is used to assess meteorological fire danger worldwide. It has been argued that it lacks an atmospheric instability term. A new enhanced FWI (FWIe) was recently developed incorporating in the form of Continuous Haines (CHI). Here, first climatological and evolution analysis these indexes performed using ERA5 data for 1980–2020 period. There a prevalence higher values over central Iberia; were heavily modulated by climate types, topography, land cover. Southwest...
North Atlantic Tropical Cyclones (TCs) are major atmospheric hazards that can cause large disruptions to coastal and near-coastal societies. Although most studies focus on those areas with highest impact (e.g., Caribbean Islands, the Gulf western coast of United States), there is an increasing interest in characterizing changes occurrence impacts usually less affected by TCs, particularly framework a changing climate. Here we provide long-term context evaluating frequency TC Northeast (NEA)...
Abstract. Tropical cyclones (TCs) are extreme climate events that known to strongly interact with the ocean through two mechanisms: dynamically associated intense wind stress and thermodynamically moist enthalpy exchanges at surface. These interactions contribute relevant oceanic responses during after passage of a TC, namely induction cold wake production chlorophyll (Chl a) blooms. This study aimed understand these in Azores region, an area relatively low cyclonic activity for North...
NASA’s scientist James E. Hansen (named ‘The father of climate change’) has become widely recognized due to his many relevant contributions change topics. In particular, studies recent changes temperature at the decadal-scale published in 2012 and 2016, detected emergence a new kind summertime extremely hot events which would not have occurred absence global warming. Here, we update extend analysis these using latest reanalysis data from ECMWF (ERA5) 1951 2020,...
Windstorms in Europe are responsible for more than half of the economic loss associated with natural disasters. In October 2018 a post-tropical cyclone, formerly Hurricane Leslie, made landfall continental Portugal. This event was characterized by very intense winds, gust record-hitting value 176 km/h registered near Figueira da Foz, coastal city located center country. The main factors causing this extreme winds were likely “cold-conveyor belt jet” or “jet...
Wildland fire spread and behaviour are complex phenomena owing to both the number of involved Physicochemical factors non-linear relationship between variables. In Portugal, one European countries most affected by wildfires, forest bushfires occur every summer often exacerbated when extremely dry weather sets along with high temperatures. On 17th June 2017, an extreme heatwave associated a severe drought compounded unusual levels atmospheric instability led multiplicity wildfires many active...
Abstract. Tropical Cyclones (TCs) are extreme climate events that known to strongly interact with the ocean through two mechanisms: dynamically associated intense wind stress, and thermodynamically moist enthalpy exchanges at surface. These interactions contribute relevant oceanic responses after passage of a TC, namely induction cold wake production chlorophyll (chl-a) blooms. This study aimed understand these in Azores region, an area relatively low cyclonic activity for North Atlantic...
<p>The most pervasive seismic signal recorded on our planet – microseismic ambient noise -results from the coupling of energy between atmosphere, oceans and solid Earth. Because it carries information ocean waves (source), wavefield can be advantageously used to image storms. Such imaging is interest both climate studies by extending record oceanic activity back into early instrumental real-time monitoring where data potentially complement spatially dense but...
<p>The most pervasive seismic signal recorded on our planet – microseismic ambient noise -results from the coupling of energy between atmosphere, oceans and solid Earth. Because it carries information ocean waves (source), wavefield can be advantageously used to image storms. This imaging is interest both climate studies by extending record oceanic activity back into early instrumental real-time monitoring where data potentially complement spatially dense but...