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Usage of the drag-based model (CROSBI ID 644283)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Žic, Tomislav ; Temmer, Manuela ; Vršnak, Bojan Usage of the drag-based model. 2016

Podaci o odgovornosti

Žic, Tomislav ; Temmer, Manuela ; Vršnak, Bojan

engleski

Usage of the drag-based model

The drag-based model (DBM) is an analytical model which is usually used for calculating kinematics of coronal mass ejections (CMEs) in the interplanetary space, prediction of the CME arrival times and impact speeds at arbitrary “target” in the heliosphere. The main assumption of the model is that beyond a distance of about 20 solar radii from the Sun, the drag is dominant in the interplanetary space. The previous version of DBM relied on the rough assumption of averaged, unperturbed and constant surrounding and CME properties throughout entire interplanetary CME propagation. The continuation of our work consists of enhancing the model into a form where is used a time dependent and perturbed environment without constraints on CME properties and distance forecasting. The extension provides the possibility of application in various scenarios, such as automatic least-square fitting on initial CME kinematic data suitable for a real-time forecasting of CME kinematics, or embedding the DBM into pre-calculated interplanetary ambient conditions provided by advanced numerical simulations (for example, codes of ENLIL, EUHFORIA, etc.). A demonstration of enhanced DBM is available on the web-site: http://www.geof.unizg.hr/~tzic/dbm.html. We acknowledge the support of European Social Fund under the “PoKRet” project.

methods: analytical ; methods: numerical ; solar–terrestrial relations ; solar wind ; Sun: corona ; Sun: coronal mass ejections (CMEs)

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Podaci o prilogu

2016.

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objavljeno

Podaci o matičnoj publikaciji

Podaci o skupu

European Geosciences Union General Assembly 2016

poster

01.01.2016-01.01.2016

Beč, Austrija

Povezanost rada

Fizika