Atmospheric carbonyl sulfide exchange in bog microcosms
- National Center for Atmospheric Research, Boulder, CO (United States)
Measurements of Carbonyl sulfide (OCS) fluxes were carried out on bog microcosms using chamber sampling and tunable diode laser analysis. Intact bog microcosms (vascular plants, mosses, and peat) removed ambient levels of OCS in the light and dark with rates from [minus]2.4 to [minus]8.1 ng S min[sup [minus]1] m[sup [minus]2]. Peat and peat plus mosses emitted OCS in the light with rates of 17.4 and 10.9 ng S min[sup [minus]1] m[sup [minus]2], respectively. In the dark, the mosses apparently removed OCS at a rate equivalent to the peat emissions. A 3-D numerical tracer model using this data indicated that boreal bog ecosystems remove at most 1% of ambient OCS, not sufficient to account for an observed OCS depletion in boreal air masses. 13 refs., 1 fig., 1 tab.
- OSTI ID:
- 6713482
- Journal Information:
- Geophysical Research Letters (American Geophysical Union); (United States), Vol. 20:2; ISSN 0094-8276
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
CARBONYLS
EARTH ATMOSPHERE
ECOSYSTEMS
UPTAKE
SULFIDES
SWAMPS
AEROSOLS
AIR
LEVELS
MICROCOSMS
MOSSES
OZONE
PEAT
PLANTS
SAMPLING
SULFATES
TROPOSPHERE
AQUATIC ECOSYSTEMS
BRYOPHYTA
CHALCOGENIDES
COLLOIDS
DISPERSIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
MATTER
ORGANIC MATTER
OXYGEN COMPOUNDS
SOLS
SULFUR COMPOUNDS
TERRESTRIAL ECOSYSTEMS
WETLANDS
560300* - Chemicals Metabolism & Toxicology
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)