Open AccessCarbonyl sulfide and dimethyl sulfide exchange between lawn and the atmosphere
Author(s) -
Geng Chunmei,
Mu Yujing
Publication year - 2004
Publication title -
journal of geophysical research: atmospheres
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2003jd004492
Subject(s) - carbonyl sulfide , lawn , dimethyl sulfide , sink (geography) , sulfide , environmental chemistry , atmosphere (unit) , chemistry , methane , environmental science , daytime , atmospheric sciences , sulfur , meteorology , geology , botany , physics , cartography , organic chemistry , geography , biology
The exchange of carbonyl sulfide (COS) between lawn and the atmosphere was investigated by using a static enclosure under natural field conditions. The results indicated that the lawn acted as a sink for atmospheric COS and a source of dimethyl sulfide (DMS). The exchange fluxes of COS and DMS ranged between −3.24 pmol m −2 s −1 and −94.52 pmol m −2 s −1 , and between 0 and 3.14 pmol m −2 s −1 , respectively. The lawn was capable of continuously absorbing COS in nighttime as well as in daytime. The COS fluxes depended strongly on the ambient COS mixing ratios. The dependency of DMS emission fluxes on temperature was observed in November 2002. Soil also acted as a sink for COS during our study. However, the COS exchange fluxes of the lawn were much higher than that of the soil. The average COS and DMS fluxes were much higher in spring than in autumn and in summer. The daytime vertical profiles of COS also indicated that the lawn acted as a net sink for COS.