Erisman JW ,
Elzakker BG van ,
Mennen MG ,
Beld B van den ,
Romer F ,
Verhage A ,
Rooth R ,
Bobbink R ,
Heil G ,
Raessen M ,
Duyzer JH ,
Verhage H
44 p
in Dutch
1991
Toon Nederlands
English Abstract A one year experiment for the determination of
deposition fluxes on heathland was conducted at the Elspeetsche Veld
involving several research groups. Micrometeorological fluxes of SO2
(RIVM), NH3 (KEMA) and NO2 (TNO-ME) were measured, together with throughfall
and bulk precipitation fluxes of SO4 2-, NH4+ and NO3- (RUU). In this
report, annual average deposition fluxes and deposition velocities of SO2
and NH3 derived from micrometeorological measurements are presented. The
NH3 measurements were made using two methods ; the thermodenuder instrument
and the photo acoustic spectrometer. The results of the two methods are
compared. The measuring period for NO2 fluxes was too short to obtain
yearly averages. The annual average throughfall and stemflow fluxes are
compared to those obtained from the micrometeorological measurements.
Finally the co-deposition of SO2 and NH3 is investigated. No conclusive
evidence could be obtained from the present data.