Evaluation of Meteorological Parameters Influence Upon Pollen Spread in the Atmosphere / Meteorologinių Parametrų Įtakos Žiedadulkių Sklaidai Atmosferoje Įvertinimas / Оценка Влияния Метеорологических Параметро Вн Адисперсию Пыльцыв Атмосфере

Abstract

The elements determining the meteorological conditions are the main parameters in processes of airborne pollen modeling. In modern research the influence of different meteorological element or their complex is analyzed basing upon the statistic methods or using dispersion models in which the possible influence of meteorological parameters upon airborne pollen is described in equations. The correlation of meteorological indicators and pollen concentration in the atmosphere fixed in Klaipėda Aerobiological Station is analyzed in this article. The coefficients of correlation of meteorological parameters and pollen concentration are calculated basing upon the Spearman's rank correlation method. The analysis of various factors was used for determining the complex influence of meteorological parameters upon the pollen concentration in the air. After evaluation of influence of meteorological parameters as separate factors one has determined that more than a half of analyzed pollen types showed statistically reliable (p < 0.05) correlation of pollen amount in the air and relative air humidity (89%), air temperature (74%) and amount of precipitation (52%). The investigation results showed that 37% of pollen amount of indicated plants genera and families in the atmosphere was determined by wind velocity. After evaluation of complex influence of meteorological factors on the concentration of pollen spread in the air one has determined that relative humidity and/or air temperature are one of the most significant environmental factors determining the amount of pollen in the atmosphere during the vegetation. Their influence was determined for all the three cases under study.

Influence of meteorological and ambient air quality factors on Artemisia pollen counts in Urumqi, Northwest China

“…In addition to local sources in the study area, potential sources of Artemisia have been identified in central and southern Inner Mongolia, southern Mongolia, and northwest China (the present study area) [ 7 ]. Pollen dispersal is directly influenced by meteorological parameters, such as air temperature (T), relative humidity (RH), precipitation, wind speed (WS), and wind direction (WD) [ 8 , 9 ].…”

Influence of Synoptic Meteorology on Airborne Allergenic Pollen and Spores in an Urban Environment in Northeastern Iberian Peninsula

“…The emission of pollen depends on characteristics of the environment (soil composition, moisture content, vegetation cover), and on local atmospheric conditions such as temperature, humidity and wind speed (Rojo et al, 2015). Many studies have concluded that temperature is the main meteorological variable that influences timing and pollen levels (Veriankaitė et al, 2012;Majeed et al, 2018). Recent studies found little but significant influence of moderately extreme rainfall on later pollination (Kirchner et al, 2022;Rodríguez-Solà et al, 2022).…”

Experimental Research Into Aerodynamic Parameters of a Cylindrical One-Level 8-Channel Cyclone

“…For example, centrifugal forces increase when a cyclone diameter is smaller and therefore narrower cyclones achieve higher efficiency; gas residence time is longer in cyclones whose cylindrical and conical parts are longer than the diameter and therefore the cleaning efficiency of such cyclones is higher or increases when the gas rate increases in the cyclone. To achieve the gas rotation rate, different inlets are used: tangential, continual, helical or axial (of them, the most frequently used are tangential and continual inlet) (Burov et al 2005(Burov et al , 2007Gimbun et al 2005;Kaya, Karagoz 2008;Veriankaitė et al 2011).…”