Claim · model-written summary
Mean daily carbon dioxide decreased 28 vpm from June to September.
- Taxon
- native grasslandt0
- Outcome
- mean daily <CO2>e0
- Direction
- decreasee0
- Value
- 28 vpme0
- Qualifier
- from June to Septembere0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSetting
Verbatim
t0“native grassland”
e0“A 28 vpm decrease in mean daily <CO2> from June to September is considered part of the annual <CO2> variation.”
Title
Carbon dioxide concentrations over a native grassland in Saskatchewan
D. L. Spiltlehouse; E. A. Ripley Tellus A Dynamic Meteorology and Oceanography 1977. doi:10.3402/tellusa.v29i1.11330
Other claims from this paper (4)
- Observation Diurnal carbon dioxide variation reached 100 vpm in the canopy and diminished with height.
- Mechanism Daytime photosynthetic intake and nighttime plant and soil respiration drove the diurnal carbon dioxide variation.
- Association Irregular carbon dioxide variations had 3 to 5 day periods and appeared linked to synoptic weather.
- Observation Carbon dioxide fell with longer trajectories over land, differing by up to 7 vpm in daily minima.