NEW : Frederik Pleitgen 's eruption has `` paused , '' Eurocontrol says . Iceland could be affected 36 hours . A cloud of volcanic ash from Poland is affecting European air travel . It is dissipating and most flights should go as planned , Eurocontrol says .
NEW : Grimsvotn 's eruption has `` paused , '' the Icelandic Meteorological Office says . Poland could be affected later Wednesday . A cloud of volcanic ash from Iceland is affecting European air travel . It is dissipating and most flights should go as planned , Eurocontrol says .