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Process-based modelling of biogenic monoterpene emissions combining production and release from storage

Schurgers, Guy LU ; Arneth, Almut LU ; Holzinger, R. and Goldstein, A. H. (2009) In Atmospheric Chemistry and Physics 9(10). p.3409-3423
Abstract
Monoterpenes, primarily emitted by terrestrial vegetation, can influence atmospheric ozone chemistry, and can form precursors for secondary organic aerosol. The short-term emissions of monoterpenes have been well studied and understood, but their long-term variability, which is particularly important for atmospheric chemistry, has not. This understanding is crucial for the understanding of future changes. In this study, two algorithms of terrestrial biogenic monoterpene emissions, the first one based on the short-term volatilization of monoterpenes, as commonly used for temperature-dependent emissions, and the second one based on long-term production of monoterpenes (linked to photosynthesis) combined with emissions from storage, were... (More)
Monoterpenes, primarily emitted by terrestrial vegetation, can influence atmospheric ozone chemistry, and can form precursors for secondary organic aerosol. The short-term emissions of monoterpenes have been well studied and understood, but their long-term variability, which is particularly important for atmospheric chemistry, has not. This understanding is crucial for the understanding of future changes. In this study, two algorithms of terrestrial biogenic monoterpene emissions, the first one based on the short-term volatilization of monoterpenes, as commonly used for temperature-dependent emissions, and the second one based on long-term production of monoterpenes (linked to photosynthesis) combined with emissions from storage, were compared and evaluated with measurements from a Ponderosa pine plantation (Blodgett Forest, California). The measurements were used to parameterize the long-term storage of monoterpenes, which takes place in specific storage organs and which determines the temporal distribution of the emissions over the year. The difference in assumptions between the first (emission-based) method and the second (production-based) method, which causes a difference in upscaling from instantaneous to daily emissions, requires roughly a doubling of emission capacities to bridge the gap to production capacities. The sensitivities to changes in temperature and light were tested for the new methods, the temperature sensitivity was slightly higher than that of the short-term temperature dependent algorithm. Applied on a global scale, the first algorithm resulted in annual total emissions of 29.6 Tg C a(-1), the second algorithm resulted in 31.8 Tg Ca-1 when applying the correction factor 2 between emission capacities and production capacities. However, the exact magnitude of such a correction is spatially varying and hard to determine as a global average. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
in
Atmospheric Chemistry and Physics
volume
9
issue
10
pages
3409 - 3423
publisher
Copernicus Gesellschaft Mbh
external identifiers
  • wos:000266556000013
  • scopus:71449111792
ISSN
1680-7324
language
English
LU publication?
yes
id
4034311a-2e52-454f-a693-6dfdb069b82b (old id 1444151)
alternative location
http://www.atmos-chem-phys.net/9/3409/2009/
date added to LUP
2009-07-17 10:30:14
date last changed
2017-11-19 03:39:19
@article{4034311a-2e52-454f-a693-6dfdb069b82b,
  abstract     = {Monoterpenes, primarily emitted by terrestrial vegetation, can influence atmospheric ozone chemistry, and can form precursors for secondary organic aerosol. The short-term emissions of monoterpenes have been well studied and understood, but their long-term variability, which is particularly important for atmospheric chemistry, has not. This understanding is crucial for the understanding of future changes. In this study, two algorithms of terrestrial biogenic monoterpene emissions, the first one based on the short-term volatilization of monoterpenes, as commonly used for temperature-dependent emissions, and the second one based on long-term production of monoterpenes (linked to photosynthesis) combined with emissions from storage, were compared and evaluated with measurements from a Ponderosa pine plantation (Blodgett Forest, California). The measurements were used to parameterize the long-term storage of monoterpenes, which takes place in specific storage organs and which determines the temporal distribution of the emissions over the year. The difference in assumptions between the first (emission-based) method and the second (production-based) method, which causes a difference in upscaling from instantaneous to daily emissions, requires roughly a doubling of emission capacities to bridge the gap to production capacities. The sensitivities to changes in temperature and light were tested for the new methods, the temperature sensitivity was slightly higher than that of the short-term temperature dependent algorithm. Applied on a global scale, the first algorithm resulted in annual total emissions of 29.6 Tg C a(-1), the second algorithm resulted in 31.8 Tg Ca-1 when applying the correction factor 2 between emission capacities and production capacities. However, the exact magnitude of such a correction is spatially varying and hard to determine as a global average.},
  author       = {Schurgers, Guy and Arneth, Almut and Holzinger, R. and Goldstein, A. H.},
  issn         = {1680-7324},
  language     = {eng},
  number       = {10},
  pages        = {3409--3423},
  publisher    = {Copernicus Gesellschaft Mbh},
  series       = {Atmospheric Chemistry and Physics},
  title        = {Process-based modelling of biogenic monoterpene emissions combining production and release from storage},
  volume       = {9},
  year         = {2009},
}