Abstract: Dispersion and deposition of ragweed pollen released naturally from circular area sources of four sizes (5?27 m in diameter) and artificially from point sources were studied at Brookhaven National Laboratory. Concentrations ...

Abstract: Pollen transport and dispersion from generalized area sources was studied by 29 flights to distances of 100 km and heights of 3 km using an aircraft-mounted isokinetic sampler. Tree pollens and ragweed pollen served as ...

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Abstract: tract