ArticleInternational journal of biometeorology2009
Are the birch trees in Southern England a source of Betula pollen for North London?
Article in International journal of biometeorology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Biometeorology for cities.International journal of biometeorology · 2017Review
- Aerobiology in the International Journal of Biometeorology, 1957-2017.International journal of biometeorology · 2017Article
- Spatiotemporal models for predicting high pollen concentration level of Corylus, Alnus, and Betula.International journal of biometeorology · 2016Article
- Pollen nightmare: elevated airborne pollen levels at night.Aerobiologia · 2016Article
- Improvement in the accuracy of back trajectories using WRF to identify pollen sources in southern Iberian Peninsula.International journal of biometeorology · 2014Article
- Identification of potential sources of airborne Olea pollen in the Southwest Iberian Peninsula.International journal of biometeorology · 2014Article
- Pollen season and climate: is the timing of birch pollen release in the UK approaching its limit?International journal of biometeorology · 2013Article
- A numerical model of birch pollen emission and dispersion in the atmosphere. Model evaluation and sensitivity analysis.International journal of biometeorology · 2013Article
- A numerical model of birch pollen emission and dispersion in the atmosphere. Description of the emission module.International journal of biometeorology · 2013Article
- The occurrence of Ambrosia pollen in Rzeszów, Kraków and Poznań, Poland: investigation of trends and possible transport of Ambrosia pollen from Ukraine.International journal of biometeorology · 2011Article
- Source areas and long-range transport of pollen from continental land to Tenerife (Canary Islands).International journal of biometeorology · 2011Article
- The Pannonian plain as a source of Ambrosia pollen in the Balkans.International journal of biometeorology · 2009Article
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Birch pollen is highly allergenic. Knowledge of daily variations, atmospheric transport and source areas of birch pollen is important for exposure studies and for warnings to the public, especially for large cities such as London. Our results show that broad-leaved forests with high birch tree densities are located to the south and west of London. Bi-hourly Betula pollen concentrations for all the days included in the study, and for all available days with high birch pollen counts (daily average birch pollen counts>80 grains/m3), show that, on average, there is a peak between 1400 hours and 1600 hours. Back-trajectory analysis showed that, on days with high birch pollen counts (n=60), 80% of air masses arriving at the time of peak diurnal birch pollen count approached North London from the south in a 180 degree arc from due east to due west. Detailed investigations of three Betula pollen episodes, with distinctly different diurnal patterns compared to the mean daily cycle, were used to illustrate how night-time maxima (2200-0400 hours) in Betula pollen counts could be the result of transport from distant sources or long transport times caused by slow moving air masses. We conclude that the Betula pollen recorded in North London could originate from sources found to the west and south of the city and not just trees within London itself. Possible sources outside the city include Continental Europe and the Betula trees within the broad-leaved forests of Southern England.
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