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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Measuring Tree Properties and Responses Using Low-Cost Accelerometers

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van Emmerik, Tim ; Steele-Dunne, Susan ; Hut, Rolf ; Gentine, Pierre ; Guerin, Marceau ; Oliveira, Rafael S. ; Wagner, Jim ; Selker, John ; van de Giesen, Nick
Total Authors: 9
Document type: Journal article
Source: SENSORS; v. 17, n. 5 MAY 2017.
Web of Science Citations: 9

Trees play a crucial role in the water, carbon and nitrogen cycle on local, regional and global scales. Understanding the exchange of momentum, heat, water, and CO2 between trees and the atmosphere is important to assess the impact of drought, deforestation and climate change. Unfortunately, ground measurements of tree properties such as mass and canopy interception of precipitation are often expensive or difficult due to challenging environments. This paper aims to demonstrate the concept of using robust and affordable accelerometers to measure tree properties and responses. Tree sway is dependent on mass, canopy structure, drag coefficient, and wind forcing. By measuring tree acceleration, we can relate the tree motion to external forcing (e.g., wind, precipitation and related canopy interception) and tree physical properties (e.g., mass, elasticity). Using five months of acceleration data of 19 trees in the Brazilian Amazon, we show that the frequency spectrum of tree sway is related to mass, canopy interception of precipitation, and canopy-atmosphere turbulent exchange. (AU)

FAPESP's process: 13/50531-2 - Ecophysiological controls on Amazonian precipitation seasonality and variability
Grantee:Laura de Simone Borma
Support type: Research Program on Global Climate Change - Regular Grants