DOI: 10.1016/j.atmosenv.2018.03.048
Scopus记录号: 2-s2.0-85044594742
论文题名: Hourly pattern of allergenic alder and birch pollen concentrations in the air: Spatial differentiation and the effect of meteorological conditions
作者: Borycka K ; , Kasprzyk I
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 182 起始页码: 179
结束页码: 192
语种: 英语
英文关键词: Aerobiology
; Airborne pollen
; Circular statistic
; Convective precipitation
; Diurnal pollen concentration
; Meteorological parameters
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: In temperate climate widespread alder and birch are an important source of strong aeroallergens. The diurnal pattern of airborne pollen concentrations depends on the rhythm of pollen release from anthers as well as weather conditions, convection air currents, long-distance transport, pollen trap location and local vegetation. The aim of the study was to present a diurnal pattern of Alnus (alder) and Betula (birch) pollen concentrations in the air in a horizontal and vertical gradient and examine the weather parameters that had the greatest impact on the pattern. The study was conducted in Rzeszów City, southeast Poland over three years. Pollen grains were collected using a Hirst volumetric spore trap at three sampling points: two at 12 m the agl, and one at 1.5 m agl. Data were analysed using circular statistics and a nonlinear function. For alder, three models of hourly patterns were elaborated and the most common presented early morning minimum and early afternoon maximum. For birch, the most common model has one peak at night and a marked decrease in concentrations in early morning, although a second model has peak during early afternoon. A model with 3 peaks is much less common. These models are characteristic for warm temperate climate regions, where alders and birches are common. The diurnal patterns did not depend on the localization of traps or proximity of the pollen source, although these factors influenced the hourly concentrations, with higher values observed at roof level. Significant relationships between the hourly pollen counts and meteorological parameters were observed only for alder. Three incidents of increasing birch pollen concentrations were observed during the first two hours of precipitation and linked to a convection effect. Unstable weather conditions caused by air convection might strongly modify the circadian pattern and cause the nightly peaks concentrations. The general results are that people suffering from allergies may be exposed to high birch and alder pollen concentrations at almost all times during the day with the exception of the morning hours, as well as during the first hours of convective precipitation. Precise information on pollen concentrations aids in allergy prevention, so cities should provide aerobiological monitoring at least at “roof level” and “nose level”. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82879
Appears in Collections: 气候变化事实与影响
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作者单位: University of Rzeszow, Department of Ecology and Environmental Biology, 4 Zelwerowicza St., Rzeszow, Poland
Recommended Citation:
Borycka K,, Kasprzyk I. Hourly pattern of allergenic alder and birch pollen concentrations in the air: Spatial differentiation and the effect of meteorological conditions[J]. Atmospheric Environment,2018-01-01,182