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Keywords = PANGEA observatory

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7 pages, 1589 KB  
Proceeding Paper
Modeling Smoke Emissions and Transport for Wildfire Using Satellite Observations and Lagrangian Dispersion Modeling
by Thanasis Kourantos, Anna Kampouri, Anna Gialitaki, Maria Tsichla, Eleni Marinou, Vassilis Amiridis and Ioannis Kioutsioukis
Environ. Earth Sci. Proc. 2025, 35(1), 2; https://doi.org/10.3390/eesp2025035002 - 8 Sep 2025
Viewed by 2456
Abstract
A significant wildfire event occurred in Korinthos, Greece, on 22 July 2020, releasing large amounts of smoke into the atmosphere. This episode provided the opportunity to develop and apply the methodology described in this work, where the synergistic use of ground data, satellite [...] Read more.
A significant wildfire event occurred in Korinthos, Greece, on 22 July 2020, releasing large amounts of smoke into the atmosphere. This episode provided the opportunity to develop and apply the methodology described in this work, where the synergistic use of ground data, satellite remote sensing data and dispersion modeling is utilized to demonstrate highly accurate source detection, emission transport, and dispersion of the smoke plumes. The Fire Radiative Power (FRP) data from SEVIRI, on board Meteosat Second Generation, are used to estimate hourly fire top-down emissions. These emissions are used as input for the FLEXPART Lagrangian particle dispersion model, driven by GFS meteorological data. Simulated smoke transport is compared with TROPOMI satellite CO observations and lidar profiles from the PANhellenic GEophysical observatory of Antikythera (PANGEA) station. The model includes key atmospheric processes such as advection and deposition, providing a framework for assessing wildfire impacts on air quality and transport. The results highlight the effectiveness of combining high temporal resolution FRP data with the WARM START configuration of FLEXPART versus the Standard FLEXPART Simulation. Full article
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6 pages, 1281 KB  
Proceeding Paper
Cloud Types and Geometrical Properties Observed above PANGEA Observatory in the Eastern Mediterranean
by Iliana Koutsoupi, Eleni Marinou, Kalliopi Artemis Voudouri, Ioanna Tsikoudi, Peristera Paschou, Vassilis Amiridis, Alessandro Battaglia, Pavlos Kollias and Eleni Giannakaki
Environ. Sci. Proc. 2023, 26(1), 205; https://doi.org/10.3390/environsciproc2023026205 - 8 Oct 2023
Viewed by 1071
Abstract
In this work, we utilize space-based radar products from CloudSat mission and provide statistics on the properties of the clouds observed above the PANGEA (PANhellenic GEophysical observatory of Antikythera) observatory, located in the Eastern Mediterranean. We found that the variable atmospheric conditions that [...] Read more.
In this work, we utilize space-based radar products from CloudSat mission and provide statistics on the properties of the clouds observed above the PANGEA (PANhellenic GEophysical observatory of Antikythera) observatory, located in the Eastern Mediterranean. We found that the variable atmospheric conditions that prevailed above the region in 2007–2017 resulted in complex cloud structures. From the clouds observed, 39.8% were low-level clouds formed at the top of the marine boundary layer (≤2 km), 34.2% were mid-level clouds (between 2–7 km), and 25.9% were high-level or deep convective clouds (between 7–15 km). Thin clouds (<1 km depth) are observed in 33% of the cases, while thick clouds (>6 km) in 15% of the cases. The results of this study can be used from regional and climate models to evaluate their cloud predictions and investigate the performance of different cloud microphysics schemes. Full article
(This article belongs to the Proceedings of 16th International Conference on Meteorology, Climatology and Atmospheric Physics—COMECAP 2023)
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7 pages, 1437 KB  
Proceeding Paper
Inversion Techniques on Etna’s Volcanic Emissions and the Impact of Aeolus on Quantitative Dispersion Modeling
by Anna Kampouri, Vassilis Amiridis, Thanasis Georgiou, Stavros Solomos, Ioannis Binietoglou, Anna Gialitaki, Eleni Marinou, Antonis Gkikas, Emmanouil Proestakis, Michael Rennie, Angela Benedetti, Simona Scollo, Lucia Mona, Nikolaos Papagiannopoulos and Prodromos Zanis
Environ. Sci. Proc. 2023, 26(1), 187; https://doi.org/10.3390/environsciproc2023026187 - 11 Sep 2023
Cited by 2 | Viewed by 1008
Abstract
Forecasting volcanic ash transport is crucial for aviation, but its accuracy is subject to both the prevailing wind fields and the knowledge of the source term of the eruption, i.e., variation of emission rate and column height with time. In this study, we [...] Read more.
Forecasting volcanic ash transport is crucial for aviation, but its accuracy is subject to both the prevailing wind fields and the knowledge of the source term of the eruption, i.e., variation of emission rate and column height with time. In this study, we use data from the high spectral resolution lidar (HSRL) in space, Aeolus, to examine their impact on the estimation of the emission rates of volcanic particles through inversion techniques. For the inverse modelling, we couple the output of the FLEXPART Lagrangian particle dispersion model with lidar observations towards estimating the emission rates of volcanic particles released from an Etna eruption. The case study used here is the Etna eruption on the 12 March 2021, well captured by the ground-based lidar station of the PANGEA observatory located at the remote island of Antikythera in Greece, downwind of the Etna volcano. It is concluded that the inversion algorithm with Aeolus wind fields assimilation optimizes both the vertical emission distribution and the Etna emission rates. Full article
(This article belongs to the Proceedings of 16th International Conference on Meteorology, Climatology and Atmospheric Physics—COMECAP 2023)
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25 pages, 20927 KB  
Article
Investigation of Volcanic Emissions in the Mediterranean: “The Etna–Antikythera Connection”
by Anna Kampouri, Vassilis Amiridis, Stavros Solomos, Anna Gialitaki, Eleni Marinou, Christos Spyrou, Aristeidis K. Georgoulias, Dimitris Akritidis, Nikolaos Papagiannopoulos, Lucia Mona, Simona Scollo, Maria Tsichla, Ioanna Tsikoudi, Ioannis Pytharoulis, Theodore Karacostas and Prodromos Zanis
Atmosphere 2021, 12(1), 40; https://doi.org/10.3390/atmos12010040 - 30 Dec 2020
Cited by 16 | Viewed by 5858
Abstract
Between 30 May and 6 June 2019 a series of new flanks eruptions interested the south-east flanks of Mt. Etna, Italy, forming lava flows and explosive activity that was most intense during the first day of the eruption; as a result, volcanic particles [...] Read more.
Between 30 May and 6 June 2019 a series of new flanks eruptions interested the south-east flanks of Mt. Etna, Italy, forming lava flows and explosive activity that was most intense during the first day of the eruption; as a result, volcanic particles were dispersed towards Greece. Lidar measurements performed at the PANhellenic GEophysical observatory of Antikythera (PANGEA) of the National Observatory of Athens (NOA), in Greece, reveal the presence of particles of volcanic origin above the area the days following the eruption. FLEXible PARTicle dispersion model (FLEXPART) simulations and satellite-based SO2 observations from the TROPOspheric Monitoring Instrument onboard the Sentinel-5 Precursor (TROPOMI/S5P), confirm the volcanic plume transport from Etna towards PANGEA and possible mixing with co-existing desert dust particles. Lidar and modeled values are in agreement and the derived sulfate mass concentration is approximately 15 μg/m3. This is the first time that Etna volcanic products are monitored at Antikythera station, in Greece with implications for the investigation of their role in the Mediterranean weather and climate. Full article
(This article belongs to the Special Issue Evaluation and Optimization of Atmospheric Numerical Models)
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