Journal article
Modelling atmospheric OH-reactivity in a boreal forest ecosystem
University of Helsinki1
Meteorology, Wind Energy Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Wind Energy Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Risø National Laboratory for Sustainable Energy, Technical University of Denmark4
Indian Institute of Science Education and Research5
National Center for Atmospheric Research6
Max Planck Institute7
We have modelled the total atmospheric OH-reactivity in a boreal forest and investigated the individual contributions from gas phase inorganic species, isoprene, monoterpenes, and methane along with other important VOCs. Daily and seasonal variation in OH-reactivity for the year 2008 was examined as well as the vertical OH-reactivity profile.
We have used SOSA; a one dimensional vertical chemistry-transport model (Boy et al., 2011) together with measurements from Hyytiälä, SMEAR II station, Southern Finland, conducted in August 2008. Model simulations only account for ~30–50% of the total measured OH sink, and in our opinion, the reason for missing OH-reactivity is due to unmeasured unknown BVOCs, and limitations in our knowledge of atmospheric chemistry including uncertainties in rate constants.
Furthermore, we found that the OH-reactivity correlates with both organic and inorganic compounds and increases during summer. The summertime canopy level OH-reactivity peaks during night and the vertical OH-reactivity decreases with height.
| Language: | English |
|---|---|
| Year: | 2011 |
| Pages: | 9133-9163 |
| ISSN: | 16807375 and 16807367 |
| Types: | Journal article |
| DOI: | 10.5194/acpd-11-9133-2011 |
| ORCIDs: | Sogachev, Andrey |
