Rice straw burning in Southeast Asia as a source of CO and COS to the atmosphere

Autor: Nguyen, Ba Cuong, Mihalopoulos, Nikolaos, Putaud, Jean-Philippe, Nguyen, Ba
Přispěvatelé: Centre des Faibles Radioactivités, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Environmental Chemistry Laboratory [Crete], University of Crete [Heraklion] (UOC)
Jazyk: angličtina
Rok vydání: 1994
Předmět:
Zdroj: Journal of Geophysical Research
Journal of Geophysical Research, 1994, 99 (D8), pp.16435. ⟨10.1029/93JD03521⟩
ISSN: 0148-0227
2156-2202
DOI: 10.1029/93JD03521⟩
Popis: International audience; Atmospheric samples were collected during rice straw burning at four different locations in Viet Nam during the dry and wet seasons (March 1992, February 1993, and August 1992, respectively). The samples were analyzed for CO 2, CO, and COS. The emission ratios relative to CO 2 for rice straw burning during the dry season were comparable to those observed on samples collected during burning of savanna in Africa or forest in the United States. On the contrary, during the wet season the emission ratios for CO and COS relative to CO 2 were 2 to 10 times higher. With these emission ratios and estimates of rice production from southeastern Asia, we estimated that burning of rice straw emits annually about 2.1 Tmol of CO (25 Tg C) and 0.6 Gmol of COS (0.02 Tg S) to the atmosphere. Taking into account these new results, CO and COS fluxes from biomass burning could be reevaluated by 5-21% and 10-67%, respectively, with regard to previous estimates of these gas emissions from all biomass burning activities.
Databáze: OpenAIRE
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