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Airborne pollen in Nuuk, Greenland, and the importance of meteorological parameters

机译：格陵兰岛努克市的机载花粉和气象参数的重要性

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摘要

To describe the season of airborne pollen of birch and grass in the city of Nuuk, Greenland, pollen concentrations were measured daily throughout the pollen seasons in 1997 to 1999. The study was part of a large epidemiological cross-sectional study of allergy and risk factors for allergy in Greenlander Tnuit living in Greenland and Denmark. For the three years the mean birch pollen season started around 8 June, lasted in average 16 days and the mean annual total pollen count was 46. The highest daily concentration of 23 birch pollen pr. m~3 was measured in 1999. The mean grass pollen season began around 22 July, it lasted 53 days and the mean annual total pollen count was 81. The highest grass pollen number registered for one day reached 12 in 1998. Several other types of pollen were also measured, generally in small concentrations, but for Cyperaceae and Alder the mean annual total pollen count were 43 and 19 respectively. Though the measured concentrations are small, it is concluded that airborne pollen occur in the arctic climate of Nuuk in potentially clinically relevant amounts. For the three years large variations were observed for the start, duration and amounts for both birch and grass. Models for estimation of the starting date based on Growing Degree Hours (GDHs) predicted the start of the birch and grass pollen with great accuracy ― within one day. Analysis of the meteorological conditions show that the measured pollen in general originated from the area around Nuuk, but there are indications that pollen might have been long-transported from Canada.
机译：为了描述格陵兰岛努克市桦树和草的空气中花粉的季节，在1997年至1999年的整个花粉季节中每天测量花粉浓度。该研究是过敏和危险因素的大规模流行病学横断面研究的一部分对居住在格陵兰和丹麦的格陵兰特努伊特人的过敏症。三年中，桦树花粉的平均季节始于6月8日左右，平均持续16天，年平均花粉总数为46。桦树花粉的日平均浓度最高，为23 pr。 m〜3是在1999年测量的。平均草粉花粉季节始于7月22日，持续了53天，年平均花粉总数为81。1998年记录的一天中最高的草粉花粉数量达到12。还测量了花粉的浓度，通常浓度较低，但是莎草科和annual木花粉的年平均总花粉数分别为43和19。尽管测得的浓度很小，但可以得出结论，在努克的北极气候中，空气中的花粉可能以临床上相关的量存在。在这三年中，观察到桦树和草的开始，持续时间和数量都有很大的差异。基于生长小时数（GDH）估算开始日期的模型可以在一天之内就非常准确地预测桦树和草粉的开始。气象条件分析表明，所测花粉通常起源于努克周边地区，但有迹象表明花粉可能是从加拿大长期运输的。

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