A5043382031- Climate variability and models
- Tropical and Extratropical Cyclones Research
- Meteorological Phenomena and Simulations
- Oceanographic and Atmospheric Processes
- Atmospheric chemistry and aerosols
- Ocean Waves and Remote Sensing
- Atmospheric aerosols and clouds
- Climate Change, Adaptation, Migration
- Cryospheric studies and observations
- Marine and coastal ecosystems
- Atmospheric Ozone and Climate
- Climate change and permafrost
- Fire effects on ecosystems
- Atmospheric and Environmental Gas Dynamics
- Climate change impacts on agriculture
- Arctic and Antarctic ice dynamics
- Geophysics and Gravity Measurements
- Nuclear Issues and Defense
- Hydrology and Drought Analysis
- Coral and Marine Ecosystems Studies
- Air Quality and Health Impacts
- Lightning and Electromagnetic Phenomena
- Aeolian processes and effects
- Photosynthetic Processes and Mechanisms
- Insurance and Financial Risk Management
Hellenic Centre for Marine Research
2021-2025
ETH Zurich
2014-2025
Istituto Universitario di Studi Superiori di Pavia
2024
National Agency for New Technologies, Energy and Sustainable Economic Development
2024
ENEA Casaccia Research Centre
2024
Hebrew University of Jerusalem
2024
National and Kapodistrian University of Athens
2024
European Severe Storms Laboratory
2024
Centre National de la Recherche Scientifique
2009-2021
Météo-France
2021
Abstract The Mediterranean is expected to be one of the most prominent and vulnerable climate change “hotspots” twenty-first century, physical mechanisms underlying this finding are still not clear. Furthermore, complex interactions feedbacks involving ocean–atmosphere–land–biogeochemical processes play a role in modulating environment region on range spatial temporal scales. Therefore, it critical provide robust information for use vulnerability–impact–adaptation assessment studies...
Abstract. A large number of intense cyclones occur every year in the Mediterranean basin, one climate change hotspots. Producing a broad range severe socio-economic and environmental impacts such densely populated region, call for coordinated interdisciplinary research efforts. This article aims at supporting these efforts by reviewing status knowledge field cyclones. First, we focus on climatology cyclone tracks, their relationship to large-scale atmospheric circulation future trends....
Abstract Here, we analyze future projections of cyclone activity in the Mediterranean region at end twenty-first century based on an ensemble state-of-the-art fully-coupled Regional Climate System Models (RCSMs) from Med-CORDEX initiative under Representative Concentration Pathway (RCP) 8.5. Despite some noticeable biases, all RCSMs capture spatial patterns and key characteristics thus them can be considered as plausible representations evolution cyclones. In general, show a decrease number...
Abstract. Many cyclone detection and tracking methods (CDTMs) have been developed in the past to study climatology of extratropical cyclones. However, all CDTMs different approaches defining centers. This naturally leads track climatologies with inconsistent physical characteristics. More than that, it is typical for produce a non-negligible number tracks weak atmospheric features, which do not correspond large-scale or mesoscale vortices can differ significantly between CDTMs. Lack...
Mediterranean cyclones with tropical‐like characteristics such as spiral cloud coverage and a central cloud‐free “eye” are referred to medicanes. These systems have been analyzed due their relation high‐impact weather. In previous studies, the identification of medicanes has typically performed subjectively, using satellite pictures, but also objectively through three‐dimensional diagnosis warm core an axisymmetric structure. Despite presence these characteristics, it is still unclear if...
Abstract. In this study we present a new cyclone identification and tracking algorithm, cycloTRACK. The algorithm describes an iterative process. At each time step it identifies all potential centers, defined as relative vorticity maxima embedded in smoothed enclosed contours of at least 3 × 10−5 s−1 the atmospheric level 850 hPa. Next, finds paths by linking centers consecutive steps selects most probable track based on minimization cost function. function is average differences between...
Abstract Breaking of atmospheric Rossby waves has been previously shown to lead intense Mediterranean cyclones, one the most prominent environmental risks in region. Wave breaking may be enhanced by warm conveyor belts ( WCBs ) associated with extratropical cyclones developing over Atlantic Ocean. More precisely, supply upper troposphere air masses low potential vorticity that, turn, amplify ridges and thus favor wave breaking. This study identifies mechanism that connects mature through...
Abstract. In this study, we address the question of atmospheric processes that turn Mediterranean cyclones into severe storms. Our approach applies online potential vorticity (PV) budget diagnostics and piecewise PV inversion to WRF model simulations mature stage 100 intense cyclones. We quantify relative contributions different cyclone development therefore deliver, for first time, a comprehensive insight variety cyclonic systems develop in from perspective dynamics. particular, show all...
Abstract This study addresses the question of cyclone contribution to dust transport events over Mediterranean. For this reason, we tracked and associated all intense cyclones in period 2005–2012 with satellite estimations aerosol optical depth, index Ångström exponent. Results show that are related up 20% total Mediterranean, especially affecting its eastern side. When considering only extreme events, may reach 70%, highlighting as one main factors for region.
The Mediterranean basin occasionally hosts tropical‐like cyclones named “Medicanes”. Medicanes may have intensity comparable to hurricanes in terms of wind speeds along with an axisymmetric cloud structure. Although these events can be particularly violent, very few studies so far investigated the distribution and temporal evolution deep convection within cyclones. In this study, characteristics lifetime lightning activity surrounding core longest‐lasting probably most intense Medicane ever...
This study aims to assess the skill of regional climate models (RCMs) at reproducing climatology Mediterranean cyclones. Seven RCMs are considered, five which were also coupled with an oceanic model. All simulations forced lateral boundaries by ERA-Interim reanalysis for a common 20-year period (1989–2008). Six different cyclone tracking methods have been applied all twelve RCM and in order from perspective definitions. reproduce main areas high occurrence region south Alps, Adriatic, Ionian...
Abstract. In this study we aim to assess the WRF-Chem model capacity reproduce dust transport over eastern Mediterranean. For reason, compare aerosol optical depth (AOD) outputs observations, focusing on three key regions: North Africa, Arabian Peninsula and Three sets of four simulations have been performed for 6-month period spring summer 2011. Each simulation set uses a different emission parametrisation each parametrisation, emissions are multiplied with various coefficients in order...
Abstract. Mediterranean cyclones (MCs) govern extreme weather events across the Euro-African Basin, affecting lives of hundreds millions. Despite many studies addressing MCs in last few decades, their correct simulation and prediction remain a significant challenge to present day, which may be attributed large variability among MCs. Past classifications are primarily based on geographical and/or seasonal separations; however, here we focus cyclone genesis deepening mechanisms. A variety...
Abstract. This paper presents a model intercomparison study to improve the prediction and understanding of Mediterranean cyclone dynamics. It is based on collective effort with five mesoscale models look for robust response among 10 numerical frameworks used in community involved networking activity EU COST Action “MedCyclones”. The obtained multi-model, multi-physics ensemble applied high-impact Medicane Ianos September 2020 focus cyclogenesis phase, which was poorly forecast by weather...
Two deep cyclones occurred in the Mediterranean between 25 and 31 October 2012, during first Special Observation Period (SOP1) of Hydrological cycle Experiment (HyMeX). Both were associated with extreme rainfall covering a large part western Sea, where 24 h accumulated precipitation measurements exceeded 150 mm. We combine complementary observations from airborne radar lidar systems, ZEUS lightning detection network meteorological surface stations along satellite diagnostics on convection,...
Abstract. Heavy precipitation (HP) constitutes a major meteorological threat in the western Mediterranean (WMed). Every year, recurrent events affect area with fatal consequences for infrastructure and personal losses. Despite this being well-known issue widely investigated past, open questions still remain. Particularly, understanding of underlying mechanisms modeling representation must be improved. One goals Hydrological Cycle Experiment (HyMeX; 2010–2020) has been to advance knowledge on...
Abstract. On 18 September 2020, Medicane Ianos hit the western coast of Greece, resulting in flooding and severe damage at several coastal locations. In this work, we aim evaluating its impact on sea conditions associated uncertainty through use an ensemble numerical simulations. We applied a coupled wave–current model to unstructured mesh, representing whole Mediterranean Sea, with grid resolution increasing Ionian Sea along cyclone path landfall area. To investigate modelling levels waves...