ATMOSPHERIC CARBONYL SULFIDE EXCHANGE IN BOG MICROCOSMS
ATMOSPHERIC CARBONYL SULFIDE EXCHANGE IN BOG MICROCOSMS
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DOI：
10.1029/93gl00062
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发表时间：
1993-01-22
影响因子：
5.2
通讯作者：
ERICKSON, DJ
中科院分区：
文献类型：
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作者：
FRIED, A;KLINGER, LF;ERICKSON, DJ
采用箱式取样和可调谐半导体激光分析技术对沼泽微宇宙中羰基硫（OCS）通量进行了测量。完整的沼泽缩影（维管植物，苔藓，泥炭）去除环境中的OCS水平在光明和黑暗的速率从-2.4到-8.1 ng S min-1 m-2。泥炭和泥炭加上苔藓发出OCS的光与速率分别为17.4和10.9纳克S分钟-1米-2。在黑暗中，苔藓显然以相当于泥炭排放的速率去除OCS。一个3-D的数值示踪剂模型，使用这些数据表明，北方沼泽生态系统删除最多1%的环境OCS，不足以解释所观察到的OCS损耗在北方的空气质量。
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 -2.4 to -8.1 ng S min-1 m-2. Peat and peat plus mosses emitted OCS in the light with rates of 17.4 and 10.9 ng S min-1 m-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.