FLORIDA TOWER FOOTPRINT EXPERIMENTS

WATSON,T.B. ; DIETZ, R.N. ; WILKE, R. ; HENDREY, G. ; LEWIN, K. ; NAGY, J. ; LECLERC, M.

Brookhaven National Laboratory

关键词: Florida;    Carbon Dioxide;    Tracer Techniques;    Sampling;    Air Samplers;   

DOI  :  10.2172/909972
RP-ID  :  BNL--78032-2007
RP-ID  :  DE-AC02-98CH10886
RP-ID  :  909972

美国|英语

来源: UNT Digital Library

【 摘 要 】

The Florida Footprint experiments were a series of field programs in which perfluorocarbon tracers were released in different configurations centered on a flux tower to generate a data set that can be used to test transport and dispersion models. These models are used to determine the sources of the CO{sub 2} that cause the fluxes measured at eddy covariance towers. Experiments were conducted in a managed slash pine forest, 10 km northeast of Gainesville, Florida, in 2002, 2004, and 2006 and in atmospheric conditions that ranged from well mixed, to very stable, including the transition period between convective conditions at midday to stable conditions after sun set. There were a total of 15 experiments. The characteristics of the PFTs, details of sampling and analysis methods, quality control measures, and analytical statistics including confidence limits are presented. Details of the field programs including tracer release rates, tracer source configurations, and configuration of the samplers are discussed. The result of this experiment is a high quality, well documented tracer and meteorological data set that can be used to improve and validate canopy dispersion models.