Airborne Pollen Transport

2012 ◽  
pp. 127-159 ◽  
Author(s):  
Mikhail Sofiev ◽  
Jordina Belmonte ◽  
Regula Gehrig ◽  
Rebeca Izquierdo ◽  
Matt Smith ◽  
...  
Keyword(s):  
Airborne Pollen ◽  
Pollen Transport

scholarly journals A statistical study of <i>Weinmannia</i> pollen trajectories across the Andes

2009 ◽  
Vol 22 ◽  
pp. 79-84 ◽  
Author(s):  
C. F. Pérez ◽  
M. E. Castañeda ◽  
M. I. Gassmann ◽  
M. M. Bianchi
Keyword(s):  
Airborne Pollen ◽  
Principal Component ◽  
Circulation Pattern ◽  
Air Masses ◽  
The Andes ◽  
Pollen Transport ◽  
Southern Patagonia ◽  
Highly Correlated ◽  
San Carlos ◽  
Chilean Region

Abstract. Recent airborne pollen records data from Northern Patagonia (San Carlos de Bariloche, Argentina, Lat. 41.1435° S, Long. 71.375° W, 800 m elevation) suggest that pollen transport takes place from the west to the east slope of the Andes. However, the atmospheric characteristics responsible of this transport have not yet been studied. The aim of this paper is to assess potential source areas and to describe the involved atmospheric mechanisms of the trans-Andean pollen transport. Methodology relies on the analysis of backward trajectories of air masses calculated with the HYSPLIT 4.9 regional model for particular days where airborne pollen of Weinmannia trichosperma Cav. was detected east of the Andes. This pollen type was selected because it is found regularly at localities in eastern Patagonia beyond its present-day distribution. Weinmannia's substantial presence during early Holocene times would also benefit from better knowledge of its transport mechanisms. Correspondence between atmospheric trajectories and the position of sources was checked using GIS maps. Mode T, Principal Component Analysis (PCA) with Varimax rotation was used to identify the main spatial structure of geopotential height anomalies producing the calculated trajectories. Eighty-eight cases showed that the calculated directions of trajectories trended from the Northwest to Southwest passing over the Chilean region of W. trichosperma distribution. PCs results showed two patterns of negative anomalies over southern Patagonia. The prevailing circulation pattern which drives airborne transport is the presence of a trough located south of 37 to 40° S with its axis over western Patagonia. The synoptic situations for two cases highly correlated with principal component scores were described.

scholarly journals An exploratory analysis of seasonal and intraseasonal variations of the main airborne pollen types in Sunchales city, Argentina

2021 ◽  
Vol 56 (3) ◽  
Author(s):  
Claudio Pérez ◽  
Mauro Covi ◽  
María Gassmann ◽  
Ana Ulke
Keyword(s):  
Seasonal Variability ◽  
Airborne Pollen ◽  
Time Of Day ◽  
Intraseasonal Variations ◽  
Pollen Transport ◽  
Pollen Types ◽  
Pollen Concentrations ◽  
Burkard Trap ◽  
The City ◽  
Airborne Pollen Concentration

Background and aims: The study of the seasonal and intra-seasonal variability of the airborne pollen concentration is of paramount importance to understand the relationships with the emitting vegetation and the atmospheric parameters that modulate pollen transport. This research aims to study these variabilities in Sunchales, a city located in the center-east of Argentina. M&M: Atmospheric monitoring was carried out with a Burkard trap during two seasons in 2012 and 2013 on the outskirts of the city. Results & Conclusions: The pollination periods of the studied pollen types show a delay in 2013 compared to the previous year, presumably related to a greater amount of cumulative heat units in 2012. However, the integral pollen for the period 2013 was 1.4 times higher than 2012, a fact that is not explained by accumulated precipitation but by the time of day when the hydrometeors occur. Binned pollen concentrations show that the highest concentrations coincide with the urban location of the tree sources while the herbaceous ones show an association with a rural origin. Regarding the intra-seasonal variability, the highest proportion of the airborne pollen variance accumulates on the synoptic-scale (80 - 60%) with periods between 3 and 10 days. During 2012 long waves predominated (> 5.5 days) while in 2013 medium waves prevailed (3.9 - 5.5 days).

A case study of anisotropic airborne pollen transport in Northern Patagonia using a Lagrangian particle dispersion model

2018 ◽  
Vol 258 ◽  
pp. 215-222 ◽  
Author(s):  
Claudio Fabián Pérez ◽  
María Martha Bianchi ◽  
María Isabel Gassmann ◽  
Natalia Tonti ◽  
Ignacio Pisso
Keyword(s):  
Airborne Pollen ◽  
Dispersion Model ◽  
Particle Dispersion ◽  
Lagrangian Particle ◽  
Northern Patagonia ◽  
Pollen Transport

scholarly journals A First Pre-season Pollen Transport Climatology to Bavaria, Germany

2021 ◽  
Vol 2 ◽  
Author(s):  
Annette Menzel ◽  
Homa Ghasemifard ◽  
Ye Yuan ◽  
Nicole Estrella
Keyword(s):  
Pollen Season ◽  
Atmospheric Transport ◽  
Airborne Pollen ◽  
Climate Impacts ◽  
Back Trajectories ◽  
Pollen Transport ◽  
Main Pollen Season ◽  
Pollen Sources ◽  
Non Local ◽  
Start Dates

Climate impacts on the pollen season are well-described however less is known on how frequently atmospheric transport influences the start of the pollen season. Based on long-term phenological flowering and airborne pollen data (1987–2017) for six stations and seven taxa across Bavaria, Germany, we studied changes in the pollen season, compared pollen and flowering season start dates to determine pollen sources, and analyzed the likelihood of pollen transport by HYSPLIT back trajectories. Species advanced their pollen season more in early spring (e.g., Corylus and Alnus by up to 2 days yr−1) than in mid spring (Betula, Fraxinus, Pinus); Poaceae and Artemisia exhibited mixed trends in summer. Annual pollen sums mainly increased for Corylus and decreased for Poaceae and Artemisia. Start of pollen season trends largely deviated from flowering trends, especially for Corylus and Alnus. Transport phenomena, which rely on comparisons between flowering and pollen dates, were determined for 2005–2015 at three stations. Pre-season pollen was a common phenomenon: airborne pollen was predominantly observed earlier than flowering (median 17 days) and in general, in 63% of the cases (except for Artemisia and Poaceae, and the alpine location) the pollen sources were non-local (transported). In 54% (35%) of these cases, back trajectories confirmed (partly confirmed) the pre-season transport, only in 11% of the cases transport modeling failed to explain the records. Even within the main pollen season, 70% of pollen season start dates were linked to transport. At the alpine station, non-local pollen sources (both from outside Bavaria as well as Bavarian lowlands) predominated, in only 13% of these cases transport could not be confirmed by back trajectories. This prominent role of pollen transport has important implications for the length, the timing, and the severity of the allergenic pollen season, indicating only a weak dependency on flowering of local pollen sources.

scholarly journals APPLICATION OF BACKWARD AIR MASS TRAJECTORY ANALYSIS IN EVALUATING AIRBORNE POLLEN DISPERSION

2006 ◽  
Vol 14 (3) ◽  
pp. 113-120 ◽  
Author(s):  
Ingrida Šaulienė ◽  
Laura Veriankaitė
Keyword(s):  
Long Range ◽  
Trajectory Analysis ◽  
Airborne Pollen ◽  
Birch Pollen ◽  
Spore Trap ◽  
Pollen Dispersion ◽  
Air Mass ◽  
Air Mass Trajectories ◽  
Pollen Transport ◽  
Air Mass Trajectory

To investigate airborne pollen movement aerobiologists use backward air mass trajectories. In the present paper the peculiarities of airborne birch pollen dispersion are analysed. In 2005 at Šiauliai Aerobiology Station pollen was recorded using Hirst‐type spore trap. The situation of birch bloom in neighbouring European countries was evaluated according to the European Aeroallergen Network database. It was generalized and used to prove long‐range pollen transport. Air mass trajectories were calculated according to the HYSPLIT 4 model the trajectory drawing principle of which is based on the integration of the position of air mass with regard to time. The present study has shown that backward air mass trajectory analysis may be applied in investigating relationship among pollen dispersion, meteorological conditions and air mass transport. It is estimated that at Šiauliai Aerobiology Station the dynamics of pollen concentration is determinated by local flora and airborne pollen long‐range transport. The evaluation of pollen dispersion by the backward air mass trajectory method presented in the paper established precondition to look for possibilities of application of the HYSPLIT 4 model to prepare the forecasts of pollen dispersion.

Airborne pollen and spores’ deposition in alveolar tissues as a tool in drowning forensic diagnosis

Aerobiologia ◽  
2021 ◽  
Author(s):  
H. García-Mozo ◽  
C. M. Beltran-Aroca ◽  
I. K. Badu ◽  
I. Jimena ◽  
E. Girela-López
Keyword(s):  
Airborne Pollen ◽  
Pollen And Spores ◽  
Airborne Pollen And Spores

scholarly journals Potential Fertilization Capacity of Two Grapevine Varieties: Effects on Agricultural Production in Designation of Origin Areas in the Northwestern Iberian Peninsula

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 961
Author(s):  
J. Antonio Cortiñas Rodríguez ◽  
María Fernández-González ◽  
Estefanía González-Fernández ◽  
Rosa A. Vázquez-Ruiz ◽  
F. Javier Rodríguez-Rajo ◽  
...  
Keyword(s):  
Airborne Pollen ◽  
Germination Rate ◽  
Pollen Viability ◽  
Weather Conditions ◽  
Triphenyl Tetrazolium Chloride ◽  
Tetrazolium Chloride ◽  
The Mean ◽  
Study Sites ◽  
Fertilization Capacity

In the present study, we analyzed the main parameters related with the potential fertilization ability of two grapevine varieties, Godello and Mencía, during the years 2017 and 2018. The research was carried out in two vineyards of the Galician winegrowing Designation of Origin areas of Ribeiro and Ribeira Sacra. Ten vines of each variety were selected for bunch and flower counting, pollen calculations, pollen viability studies by means of aceto-carmine (AC) stain and 2, 3, 5-triphenyl tetrazolium chloride (TTC) methods, and the determination of their germination rate. In all vineyards the 50% fruitset was reached, except for Godello in Cenlle during 2017. The mean coulure value was higher for Godello (40.5%) than for Mencía (31%). Analyzing the pollen production per plant and airborne pollen levels, we observed important discordances between them, which can be due to the influence of weather conditions and be related with self-pollination processes. We found important differences on pollen viability depending on the applied method and variety, with higher values for the AC method than the TTC for both varieties in all study plots, and higher values for Mencía variety than Godello. Regarding germination rates, we observed a marked reduction in 2017 with respect to 2018, in all study sites and for both varieties. The analyzed parameters were useful to explain the different productive abilities of Godello and Mencía varieties in the two studied bioclimatic regions of Ribeiro and Ribeira Sacra.

A 3-year airborne pollen and fungal spores record in San Carlos de Bariloche, Patagonia, Argentina

Aerobiologia ◽  
2006 ◽  
Vol 22 (4) ◽  
pp. 247-257 ◽  
Author(s):  
Maria Martha Bianchi ◽  
Susana Ester Olabuenaga
Keyword(s):  
Airborne Pollen ◽  
Fungal Spores ◽  
San Carlos
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