Trace Gas and Aerosols Emissions from Biomass Burning in Brazil

巴西生物质燃烧产生的微量气体和气溶胶排放

• 批准号: 9400760
• 负责人: Peter Hobbs
• 金额: $ 31.22万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1998-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9400760&HistoricalAwards=false
• 关键词: Trace; Gas; Aerosols; Emissions; Biomass

Biomass burning worldwide is a significant source of a number of important atmospheric trace gases (e.g., C0, C02, CH4, NH3) and aerosols. It therefore plays an important role in atmospheric chemistry and, possibly, in the radiative balance of the earth. The purpose of this research is to improve quantitative estimates for the emissions of a number of trace gases and aerosols from biomass burning in tropical forests, which is probably the largest source of emissions from biomass burning worldwide. Airborne measuring techniques which have been applied successfully by this research group to studies of biomass burning in North America and the 1991 Kuwait oil fires, will be used to measure the masses of various gases and aerosols emitted into the atmosphere per unit mass of fuel burned from various types of fires in Brazil. These measurements will be used to improve estimates of global emissions of the measured species from biomass burning in the tropics. The chemical composition, cloud condensation nucleus activity, and time evolution of the aerosols from the fires will also be measured. These studies will form part of a larger investigations of both the physical and chemical properties and effects on the atmosphere of biomass burning in Brazil. The funds provided by NSF will support the chemical component of the overall study.

全世界的生物质燃烧是许多重要的大气痕量气体（例如，CO、CO2、CH4、NH3）和气溶胶。 因此，它在大气化学中起着重要作用，并可能在地球的辐射平衡中起着重要作用。 这项研究的目的是改进对热带森林生物质燃烧产生的一些痕量气体和气溶胶排放量的定量估计，这可能是全世界生物质燃烧产生的最大排放源。 该研究小组已成功地将空中测量技术应用于北美生物量燃烧和1991年科威特石油大火的研究，将用于测量巴西各类大火每单位质量燃料燃烧后排放到大气中的各种气体和浮质的质量。 这些测量结果将用于改进对热带生物质燃烧产生的被测物种的全球排放量的估计。 还将测量火灾产生的气溶胶的化学成分、云凝结核活动和时间演变。 这些研究将构成对巴西生物质燃烧的物理和化学特性及其对大气影响的更大调查的一部分。 NSF提供的资金将支持整个研究的化学部分。