The DAPHNE Conceptual Model for Designing a Precipitation Enhancement Project in Thessaly, Greece

Investigation of Volcanic Emissions in the Mediterranean: “The Etna–Antikythera Connection”

“…To understand the main mechanisms driving the long-range transport of volcanic aerosol over the Mediterranean during the event, we examined the major atmospheric processes taking place in the area on a synoptic scale, as resolved by the WRF-ARW model [50]. This transport episode is associated with a closed long wave trough [91][92][93] affecting the North Italy on the isobaric level of 500 hPa. The modeled geopotential height at 500 hPa at 02:00 UTC, 30 May 2019, (which is around the starting time of the eruption) shows a low-height center (at 5600 gpm) located Northeast of Italy (Figure 3a).…”

Implementation of an innovative methodology for the evaluation and optimization of the WRF model for the study of convective activity in Thessaly

“…The main aim of the current study is to evaluate the performance of the Weather Research and Forecasting (WRF) numerical model and propose the best combination of its parameterizations, which should be used for the forecast of convective events that shall take place in the area of Thessaly, in central Greece. This study was part of the research project named "DAPHNE" aiming to tackle the problem of drought in this area, by examining the possibility of a rain enhancing program through Weather Modification (Karacostas et al, 2015). The scheduling of the flights would require an a priori good knowledge of the possibility of convective activity in the area.…”

“…A large number of scientific contributions have been produced during those years by members of the Department (Bampzelis et al, 2015;Karacostas et al, 2018;Kartsios et al, 2017Kartsios et al, , 2015Kartsios et al, , 2014bKartsios et al, , 2014aKatragkou et al, 2015;Krestenitis et al, 2017;Pytharoulis et al, 2015aPytharoulis et al, , 2015bPytharoulis et al, , 2014aPytharoulis et al, , 2018Pytharoulis et al, , 2016Stolaki et al, 2012;Tegoulias et al, 2017Tegoulias et al, , 2014aTegoulias et al, , 2014b The WRF Model -Overview and parameterizations used 9 2.2 The ARW Dynamics Solver…”

“…Today with almost forty thousand registered users in every continent of the earth, WRF is the most extensibly used numerical atmospheric model in the world. WRF is used in forecast applications as an operational tool, in long term studies as a climate model (Coppola et al, 2018;Katragkou et al, 2015), in research and education of future meteorologists. Its derivatives, consisting of the main model coupled with another specialized model are used in fire weather modeling, (WRF-Fire, Coen, 2013;Kartsios, 2020), atmospheric chemistry (WRF-Chem, Fast et al, 2006;Grell et al, 2005), Hydrology (WRF-Hydro, Gochis et al, 2015), hurricane studies (Hurricane-WRF, Tallapragada et al, 2014)), idealized simulations and even more.…”

“…The DAPHNE research project that was active from 2013 to 2015 tried to propose a methodology to tackle the problem of drought in the area. Using Weather Modification (Karacostas et al, 2015) favorable atmospheric conditions could be identified and convective clouds could be characterized as being candidates for assisted production of rain/snow through cloud seeding. The same effect could have been the collateral benefit of melting hailstones and their transformation into raindrops.…”