====== Pollen ======

Participants:
DS,ST,BMS,MG,HF,PW

Implement Pollen in the EMEP model.

From [[http://silam.fmi.fi/MACC/#|MACC]].

Model description: {{:emep:page1:pollen_main_model_20110706.doc|Sofiev}}.

schematic {{:emep:page1:struktur.pdf|structure}}.
 


===== Minutes =====

 * [[emep:page1:pollen:Minutes1|Minutes 08.09.2011]]

===== Work planned =====

-use emep birch map (David)

-implement other pollen types


===== Work done =====

The Pollen module has been implemented to the emep model. 

-The heatsum is now calculated every meteorological timestep (3 hrs).

-The birch fraction has been reduced over 60 degrees north, the same way forest is reduced in land use (lat_fac). However seems that the new numbers are a bit to low, especially at Trondheim av Bodø.

^Measured 2008: ^ ^ ^ Observed org. forest (reported)^ ^               
^site         ^start date     ^sum pollen gr.  ^ start date ^ sum pollen gr. ^
|Stavanger     | 23 Apr.       | 358  |         6 Apr.       | 511  |
|Oslo          | 23 Apr.       | 1989 |        20 Apr.       | 5594 |
|Ringebu       | 25 Apr.       | 1476 |        24 Apr.       | 5230 |
|Trondheim     | 26 Apr.       | 4215 |        23 Apr.       | 2496 |
|Bodø          | 29 Apr.       | 878  |        29 Apr.       | 8716 |

^forest red. by corr ^ ^ ^ + forest red. by  lat_fac^ ^               
^site         ^start date     ^sum pollen gr.  ^ start date ^ sum pollen gr. ^
|Stavanger     | 6 Apr.       | 560  |         6 Apr.        | 447  |
|Oslo          | 23 Apr.       | 5715 |        20 Apr.       | 5427 |
|Ringebu       | 25 Apr.       | 5349 |        24 Apr.       | 1180 |
|Trondheim     | 26 Apr.       | 2550 |        23 Apr.       | 494  |
|Bodø          | 29 Apr.       | 3724 |        29 Apr.       | 75   |

==== Pollen Storm may 2006 ===
compared pollen 9 mai 6 UTC modelled and satellite


{{:emep:page1:pollen_2006_storm_hour.000004.png?400|}}  {{:emep:page1:pollenmonster.png?400|}}