A Career Development Plan: Nocturnal Atmospheric Exchange Over Forests

职业发展计划：森林夜间大气交换

• 批准号: 9629497
• 负责人: Xuhui Lee
• 金额: $ 22.66万
• 依托单位: Yale University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-15 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9629497&HistoricalAwards=false
• 关键词: Career; Development; Plan; Nocturnal; Atmospheric

9629497 Lee Sequestering of atmospheric CO2 by forest vegetation is a process that is important to the biogeochemical carbon cycle. This exchange process is not well understood in a quantitative sense, particularly for nocturnal conditions occurring within the planetary boundary layer. The research focuses on the factors that control nocturnal fluxes of CO2 and other scalars between the biosphere and atmosphere. The project will examine atmospheric exchange at a process-level by using micrometeorological methods and it is intended to advance current techniques that quantify carbon exchange over vegetation canopies. This effort is a modeling study that will analyze currently available micrometeorological, boundary layer data for two sites located within a boreal forest ecosystem of Ontario, Canada (i.e., BOREAS experiment, summer 1993). The PI will also analyze micrometeorological data sets that will be obtained from two planned ecosystem boundary layer experiments: the Great Mountain Forest (GMF), Connecticut (site operational April 1996), and the Farm River Salt Marsh, New Haven, Connecticut (project planned 1998, funded by the Connecticut Sea Grant Program). The four experimental sites are selected on the basis of canopy profile (e.g., height, morphology, vegetation composition). Analyses of the micrometeorological data from these sites are intended to improve the present understanding of the dynamic coupling between vegetation and atmospheric flow and how this coupling affects larger scale forest-atmosphere interactions and boundary-layer turbulence. *** ATM-9629497

9629497 Lee 森林植被封存大气中的二氧化碳是一个对于生物地球化学碳循环非常重要的过程。 这种交换过程在定量意义上还没有得到很好的理解，特别是对于行星边界层内发生的夜间条件。 该研究的重点是控制生物圈和大气之间二氧化碳和其他标量夜间通量的因素。 该项目将利用微气象方法在过程层面检查大气交换，旨在推进目前量化植被冠层碳交换的技术。 这项工作是一项建模研究，将分析加拿大安大略省北方森林生态系统内两个地点目前可用的微气象边界层数据（即 BOREAS 实验，1993 年夏季）。 PI还将分析微气象数据集，这些数据集将从两个计划中的生态系统边界层实验中获得：康涅狄格州大山森林（GMF）（1996年4月开始运行）和康涅狄格州纽黑文农场河盐沼（计划于1998年进行的项目，由康涅狄格州海洋拨款计划资助）。 四个实验地点是根据树冠轮廓（例如高度、形态、植被组成）选择的。 对这些地点的微气象数据的分析旨在提高目前对植被与大气流之间的动态耦合以及这种耦合如何影响更大规模的森林-大气相互作用和边界层湍流的理解。 *** ATM-9629497