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- W1523183080 abstract "Alfieri, Joseph Gerard. Ph.D., Purdue University, December 2009. Impacts of Spatial Heterogeneity on the Measurement and Modeling of Land-Atmosphere Interactions. Major Professors: Dev Niyogi and Margaret A. LeMone. Surface characteristics, such as the type and spatial distribution of land cover, exert a critical control on both the turbulent exchange of mass and energy at the land-atmosphere interface and the subsequent meteorological, hydrological, and environmental processes. This research used a combination of in-situ, airborne, remotely sensed, and modeled data to address broad questions related to the role of land-atmosphere exchange processes in the earth’s climate system while focusing on the effects of fine-scale surface heterogeneity. Concentrating on the domain of the 2002 International H2O Project, this research was conducted in three phases. The first phase of the research sought to quantify the spatial variability in both the surface characteristics and airborne surface flux measurements. The former was achieved using spatial and categorical statistics historically associated with landscape ecology and natural resource management. It was found that while the types of land cover were similar, the proportions and degree of aggregation varied significantly across the domain. The analysis of the spatial variability of the flux measurements was achieved using statistical and process-based methods. Using the statistical methods, it was found that the variability in the turbulent fluxes varied significantly from flightto-flight. Based on analyses using the process-based approach, the spatial variations in the turbulent fluxes were most closely tied to variations in surface properties impacting the available energy and, more specifically, the soil heat" @default.
- W1523183080 created "2016-06-24" @default.
- W1523183080 creator A5087846348 @default.
- W1523183080 date "2009-01-01" @default.
- W1523183080 modified "2023-09-23" @default.
- W1523183080 title "Impacts of spatial heterogeneity on the measurement and modeling of land-atmosphere interactions" @default.
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