Theodore M. Giannaros

ORCID: 0000-0003-1138-3724
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About
Contact & Profiles
Research Areas
  • Meteorological Phenomena and Simulations
  • Fire effects on ecosystems
  • Climate variability and models
  • Atmospheric chemistry and aerosols
  • Urban Heat Island Mitigation
  • Atmospheric aerosols and clouds
  • Wind and Air Flow Studies
  • Building Energy and Comfort Optimization
  • Plant Water Relations and Carbon Dynamics
  • Atmospheric and Environmental Gas Dynamics
  • Flood Risk Assessment and Management
  • Climate Change and Health Impacts
  • Air Quality and Health Impacts
  • Vehicle emissions and performance
  • Remote Sensing and Land Use
  • Precipitation Measurement and Analysis
  • Atmospheric Ozone and Climate
  • Lightning and Electromagnetic Phenomena
  • Cryospheric studies and observations
  • Landslides and related hazards
  • Remote Sensing in Agriculture
  • Hydrology and Watershed Management Studies
  • Tropical and Extratropical Cyclones Research
  • Tree-ring climate responses
  • Fire dynamics and safety research

National Observatory of Athens
2016-2025

University of Crete
2022

Aristotle University of Thessaloniki
2010-2016

The 2021 fire season in Greece was the worst of past 13 years, resulting more than 130,000 ha burnt area, with about 70% consumed by five wildfires that ignited and spread early August. Common to these occurrence violent pyroconvection. This work presents a meteorological analysis this outbreak extreme pyroconvective wildfires. Our shows dry warm antecedent weather preconditioned fuels fire-affected areas, creating environment alone could effectively support intense wildfire activity....

10.3390/atmos13030475 article EN cc-by Atmosphere 2022-03-14

Abstract On 23 July 2018, Attica, Greece, was impacted by a major wildfire that took place in wildland–urban interface area and exhibited extreme fire behavior, characterized very high rate of spread. One-hundred civilian fatalities were registered, establishing this as the second-deadliest weather-related natural disaster following heat wave 1987. day deadly wildfire, strong westerly flow blowing for more than 10 h over Attica. Wind gusts up to 30–34 m s −1 occurred mountainous areas with...

10.1175/bams-d-18-0231.1 article EN Bulletin of the American Meteorological Society 2019-08-20

In late March 2018, a large part of the Eastern Mediterranean experienced an extraordinary episode African dust, one most intense in recent years, here referred to as "Minoan Red" event. The mainly affected Greek island Crete, where highest aerosol concentrations over past 15 yeas were recorded, although impacts also felt well beyond this core area. Our study fills gap dust research by assessing multi-sectoral sand and storms their socioeconomic implications. Specifically, we provide impact...

10.1016/j.scitotenv.2022.156861 article EN cc-by-nc The Science of The Total Environment 2022-06-22

to understand how wildfire risk policies are designed mitigate1 the impacts of wildfires. Wildfires a growing threat in many parts world, posing significant risks human life, and environment. In recent years, wildfires have increased, driven largely by climate change, activity, changes land-use patterns. Wildfire adaptation mitigation measures vary widely between countries regions around world. Therefore, it is essential develop comprehensive policy approach mitigate promote sustainable...

10.1016/j.tfp.2023.100431 article EN cc-by Trees Forests and People 2023-09-04

The Mediterranean faces frequent heavy precipitation, deadly heatwaves, and wildfires fueled by its climate. Greece, with complex topography, experiences severe extreme weather events that have escalated in recent years are projected to continue rising under future climate conditions. This paper analyzes trends Greece from 2010 2023, leveraging data an expanded network of stations spanning across as well long-term meteorological the reference station center Athens. focus includes analysis...

10.3390/atmos16010105 article EN cc-by Atmosphere 2025-01-18

Greece was affected by a prolonged and extreme heat wave (HW) event (July 28-August 05) during the abnormally hot summer of 2021, with maximum temperature in Athens, capital country, reaching up to 43.9 °C city center. This observation corresponds second highest recorded since 1900, based on historical time series National Observatory Athens weather station at Thissio. In present study, multi-scale numerical modeling system is used analyze urban climate thermal bioclimate area (AUA) course...

10.1016/j.scitotenv.2022.159300 article EN cc-by The Science of The Total Environment 2022-10-08

The derivation of global navigation satellite systems (GNSSs) tropospheric products is nowadays a state-of-the-art technique that serves both research and operational needs in broad range applications meteorology. In particular, GNSS zenith delay (ZTD) data assimilation widely applied Europe to enhance numerical weather predictions (NWPs). current study presents the first attempt at introducing ZTDs, derived from more than 48 stations Hellenic network, into NWP system National Observatory...

10.3390/rs12030383 article EN cc-by Remote Sensing 2020-01-25

Abstract The current study presents the first attempt to investigate November 2019 catastrophic flash flood in Olympiada (North Greece) under an operational forecasting and monitoring context, based on mesoscale weather research (WRF) model integrated multi‐satellite retrievals for global precipitation measurement (GPM‐IMERG) algorithm. When evaluated against ground‐based rainfall measurements, WRF showed adequate predictive capability concerning severity of observed rainfall, even though...

10.1002/met.2079 article EN cc-by Meteorological Applications 2022-07-01

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...

10.5194/gmd-10-2925-2017 article EN cc-by Geoscientific model development 2017-08-04

Abstract Existing assessments of the thermal-related impact environment on humans are often limited by use data that not representative population exposure and/or consider a human centred approach. Here, we combine high resolution regional retrospective analysis (reanalysis), and energy balance modelling, in order to produce thermal bioclimate dataset capable addressing above limitations. The consists hourly, population-weighted values an advanced human-biometeorological index, namely...

10.1038/s41597-024-02923-y article EN cc-by Scientific Data 2024-01-16

Abstract In this study, an explicit electrification and lightning parameterization scheme implemented within the Weather Research Forecasting model (E‐WRF, Fierro et al., , https://doi.org/10.1175/MWR‐D‐12‐00278.1 ) is evaluated against selected diagnostic schemes. Convection‐permitting simulations of 10 high‐impact weather case studies over Greece are compared observations from ZEUS ground‐based detection network. The model's ability to accurately simulate these convective events first...

10.1029/2017jd027930 article EN Journal of Geophysical Research Atmospheres 2018-05-14

Abstract. The Coordinated Regional Climate Downscaling Experiment (CORDEX) is a scientific effort of the World Research Program (WRCP) for coordination regional climate initiatives. In order to accept an experiment, CORDEX provides experiment guidelines, specifications domains, and data access archiving. experiments are important study at scale, same time, they also have very prominent role in providing high quality. Data requirements intended cover all possible needs stakeholders scientists...

10.5194/gmd-12-1029-2019 article EN cc-by Geoscientific model development 2019-03-22
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