Claim · model-written summary
Fluxes predicted by BEIS2 versions were about 300% higher than those of the previous BEIS model.
- Outcome
- Fluxes predicted by recent versionse0
- Direction
- highere1
- Value
- 300%e1
- Comparator
- a previous version of the model (BEIS)e1
Not reportedTaxonMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingQualifier
Verbatim
e0“Fluxes predicted by recent versions (BEIS2, BEIS2.1) of a biogenic emission model were within 10 to 50% of observed fluxes”
e1“and about 300% higher than those predicted by a previous version of the model (BEIS)”
Title
A. Guenther; J. Greenberg; P. Harley; et al. Tree Physiology 1996. doi:10.1093/treephys/16.1-2.17
Other claims from this paper (18)
- Observation Branch enclosures of woodland plants revealed 78 VOCs.
- Observation Hexenol derivatives were the most commonly observed oxygenated compounds in woodland branch emissions.
- Observation Albizia showed high isoprene emission rates.
- Observation Chusqua showed high isoprene emission rates.
- Observation Mahonia showed high isoprene emission rates.
- Observation Atriplex showed high monoterpene emission rates.
- Observation Chrysthamnus showed high monoterpene emission rates.
- Observation Sorbus showed high monoterpene emission rates.
- Observation Measurements on 34 additional species confirmed previous VOC emission results.
- Observation Leaf enclosure isoprene emission rates from Quercus were substantially higher than the rates used in existing emission models.
- Method / resource Model predictions of diurnal isoprene flux variations were within ±35% of observed variations.
- Method / resource A 60 min time resolution is reasonable for biogenic emission models.
- Observation Average daytime stand-scale flux over a shrub oak stand was 1.3 mg C m(-2) h(-1).
- Observation Average daytime stand-scale flux over a mixed forest stand was 1.5-2.5 mg C m(-2) h(-1).
- Observation Morning, evening and nighttime fluxes from woodlands were less than 0.1 mg C m(-2) h(-1).
- Observation Average daytime landscape-scale flux over a shrub oak-aspen and rangeland landscape was about 3 mg C m(-2) h(-1).
- Observation Average daytime landscape-scale flux over a deciduous forest landscape was about 7 mg C m(-2) h(-1).
- Method / resource BEIS2 and BEIS2.1 predicted fluxes within 10 to 50% of observed fluxes.