Assessing the proportion of “extra-local” pollen by means of modern aerobiological and phenological records - An example from Scots pine (Pinus sylvestris L.) in northern Finland

► We analysed extra-local modern airborne pine pollen in Finnish long-term datasets. ► Phenological and meteorological observations were applied. ► Average 6-15% pine pollen before local pollen shedding was found at the sites. ► The pollen source of an example long distance transport event is about 1000 km away.