| Pollen report – 2011 summary |
| Exposition index: | |||||||
| Year | Total pollen index |
| 2009 | 2 382 013 |
| 2010 | 2 155 483 |
| 2011 | 2 406 013 |
|
62 pollen traps distributed on the metropolitan territory allowed making this brochure. On these 62 traps, 48 (77 %) present a pollen index in increase with regard to 2010 and 14 (23 %) in decline. Among the values in decline, most of the pollen traps concerned are at high altitudes. 2011 season was characterized by a late end of winter, followed by a beautiful and warm spring which provoked a concomitance with grasses, very unfavourable to allergic people. The bad weather in July stopped the season which started again only at the beginning of August, in particular for ragweed pollens in large quantities on infested zones till the end of September. One more time, it is Montpelier station which, followed closely by those of Avignon, Nimes and Aix en Provence, beat the records of pollinations. Cypress pollens are the main responsible of these records. |
Michel Thibaudon
Click on the icons on the right to access to details of allergic risks for each pollen in 2011.