Measurements and Modeling of Isoprene Fluxes in the Program for Research on Oxidants: Photochemistry, Emissions, and Transport (PROPHET) 2000-01

氧化剂研究计划中异戊二烯通量的测量和建模：光化学、排放和传输 (PROPHET) 2000-01

• 批准号: 0074535
• 负责人: Brian Lamb
• 金额: --
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-06-01 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0074535&HistoricalAwards=false
• 关键词: Measurements; Modeling; Isoprene; Fluxes; Program

In most rural areas, plant emissions of isoprene are the dominant source of reactive hydrocarbons. During the past three summers, we have made flux measurements of isoprene over a mixed northern hardwood forest in northern Michigan as part of the Program for Research on Oxidants: Photochemistry, Emissions, and Transport (PROPHET), located at the University of Michigan Biological Station (UMBS). We have discovered a very strong correlation between sensible heat flux and isoprene flux on a daily basis. If the basis for this correlation can be understood, using heat flux as a model parameter for isoprene emissions would represent a significant advance in our ability to model isoprene fluxes. Heat flux is an inherent surface layer parameter predicted in all mesoscale meteorological models and global circulation models. Thus, it is readily available for modeling isoprene on regional and global scales. In this project we will continue our isoprene flux measurements at the PROPHET/Ameriflux site during the next two growing seasons. We will employ a fast isoprene analyzer along with fast CO2, water vapor, and temperature sensors to obtain continuous flux measurements throughout the growing season.

在大多数农村地区，工厂排放的异戊二烯是活性烃的主要来源。在过去的三个夏天里，作为位于密歇根大学生物站（UMBS）的氧化剂：光化学、排放和运输研究项目（PROPHET）的一部分，我们在密歇根州北部的北部混合阔叶林上对异二烯进行了通量测量。我们发现感热通量和异戊二烯通量之间有很强的相关性。如果能够理解这种相关性的基础，那么使用热通量作为异戊二烯排放的模型参数将代表我们在模拟异戊二烯通量方面的重大进步。热通量是所有中尺度气象模式和全球环流模式预测的一个固有的表层参数。因此，它很容易用于在区域和全球尺度上模拟异戊二烯。在这个项目中，我们将在接下来的两个生长季节继续在PROPHET/Ameriflux站点进行异戊二烯通量测量。我们将采用快速异戊二烯分析仪以及快速二氧化碳，水蒸气和温度传感器，以获得整个生长季节的连续通量测量。