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首页> 外文期刊>International Journal of Biometeorology >Examining Ambrosia pollen episodes at Poznań (Poland) using back-trajectory analysis
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Examining Ambrosia pollen episodes at Poznań (Poland) using back-trajectory analysis

机译：使用反向轨迹分析检查波兹南（波兰）的Ambrosia花粉发作

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The pollen grains of Ambrosia spp. are considered to be important aeroallergens in parts of southern and central Europe. Back-trajectories have been analysed with the aim of finding the likely sources of Ambrosia pollen grains that arrived at Poznań (Poland). Temporal variations in Ambrosia pollen at Poznań from 1995–2005 were examined in order to identify Ambrosia pollen episodes suitable for further investigation using back-trajectory analysis. The trajectories were calculated using the transport model within the Lagrangian air pollution model, ACDEP (Atmospheric Chemistry and Deposition). Analysis identified two separate populations in Ambrosia pollen episodes, those that peaked in the early morning between 4 a.m. and 8 a.m., and those that peaked in the afternoon between 2 p.m. and 6 p.m.. Six Ambrosia pollen episodes between 2001 and 2005 were examined using back-trajectory analysis. The results showed that Ambrosia pollen episodes that peaked in the early morning usually arrived at Poznań from a southerly direction after passing over southern Poland, the Czech Republic, Slovakia and Hungary, whereas air masses that brought Ambrosia pollen to Poznań during the afternoon arrived from a more easterly direction and predominantly stayed within the borders of Poland. Back-trajectory analysis has shown that there is a possibility that long-range transport brings Ambrosia pollen to Poznań from southern Poland, the Czech Republic, Slovakia and Hungary. There is also a likelihood that Ambrosia is present in Poland, as shown by the arrival of pollen during the afternoon that originated primarily from within the country.
机译：Ambrosia spp的花粉粒。在南欧和中欧部分地区被认为是重要的气敏原。为了找到到达波兹南（波兰）的安布罗妮花粉粒的可能来源，已经对回溯轨迹进行了分析。研究了1995-2005年波兹南的Ambrosia花粉的时间变化，以鉴定适于通过反向轨迹分析进一步调查的Ambrosia花粉发作。使用拉格朗日空气污染模型ACDEP（大气化学和沉积）中的运输模型来计算轨迹。分析确定了Ambrosia花粉发作中的两个单独种群，这些种群在凌晨4点至凌晨8点之间达到高峰，而在下午2点之间达到高峰。下午6点和2001年至2005年之间，有6例Ambrosia花粉发作使用了反向轨迹分析进行了检查。结果表明，通常在清晨达到顶峰的Ambrosia花粉发作经过波兰南部，捷克共和国，斯洛伐克和匈牙利之后，通常是从南方方向到达波兹南的，而下午将Ambrosia花粉带到Poznań的气团则是从偏东方向，主要停留在波兰境内。反向轨迹分析表明，远程运输有可能将Ambrosia花粉从波兰南部，捷克共和国，斯洛伐克和匈牙利带到波兹南。下午有可能来自波兰的花粉到达，这也表明波兰可能存在安布罗西亚。

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