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Biogeographical estimates of allergenic pollen transport over regional scales: Common ragweed and Szeged, Hungary as a test case
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Long-range transport is large from north–west and North Mediterranean directions.

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For Szeged medium-range transport is important on non-rainy days.

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On rainy days the two transport ranges have equal weights.

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Long-distance transported pollen is 27.8% of the annual total pollen at Szeged.

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From this quantity, 7.5% is added to, while 20.3% is subtracted from local sources.

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