Taking into account from the recent experience that a more accurate system of measured data and models are needed in order to better evaluate the conditions of the air space regarding the ash cloud,
Võttes hiljutistele kogemustele tuginedes arvesse, et õhuruumis esinevate tuhapilvedega seotud tingimuste paremaks hindamiseks on tarvis mõõteandmete ja mudelite täpsemat süsteemi,