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Title: Atmospheric carbonyl sulfide exchange in bog microcosms

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.
Authors:
; ;  [1]
  1. (National Center for Atmospheric Research, Boulder, CO (United States))
Publication Date:
OSTI Identifier:
6713482
Resource Type:
Journal Article
Resource Relation:
Journal Name: Geophysical Research Letters (American Geophysical Union); (United States); Journal Volume: 20:2
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; 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-)