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  1. Home

Representativeness Of Eddy-Covariance Flux Footprints For Areas Surrounding Ameriflux Sites

by Housen Chu - March 18, 2021

Large datasets of greenhouse gas and energy surface-atmosphere fluxes measured with the eddy-covariance technique (e.g., FLUXNET2015, AmeriFlux BASE) are widely used to benchmark models and remote-sensing products. This study addresses… More

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Bengtsson, Carl

by Carl Bengtsson - July 17, 2020

in Year of Methane   NDIR 0

Use Of Change-Point Detection For Friction–Velocity Threshold Evaluation In Eddy-Covariance Studies

by Gil Bohrer - December 2, 2019

in    0

GUNTURU, Vamsi Krishna

by GUNTURU VAMSI KRISHNA - December 17, 2018

in Year of Methane   0

Temporal Dynamics Of Aerodynamic Canopy Height Derived From Eddy Covariance Momentum Flux Data Across North American Flux Networks

by Housen Chu - October 4, 2018

Aerodynamic canopy height (ha) is the effective height of vegetation canopy for its influence on atmospheric fluxes and is a key parameter of surface‐atmosphere coupling. However, methods to estimate ha… More

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Prairie Growth, PAR Albedo And Seasonal Distribution Of Energy Fluxes

by Fianna O'Brien - January 31, 2017

Year-round measurements of surface energy fluxes, supporting meteorological parameters, soil moisture, and leaf foliage area were made at a tallgrass prairie site in north-central Oklahoma. Here we present the results… More

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Inversion Of Net Ecosystem CO2 Flux Measurements For Estimation Of Canopy PAR Absorption

by Fianna O'Brien - January 30, 2017

The fractional absorption of photosynthetically active radiation (fPAR) is frequently a key variable in models describing terrestrial ecosystem–atmosphere interactions, carbon uptake, growth and biogeochemistry. We present a novel approach to… More

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Interannual Variability In Net CO2 Exchange Of A Native Tallgrass Prairie

by Fianna O'Brien - January 30, 2017

Year-round eddy covariance flux measurements were made in a native tallgrass prairie in north-central Oklahoma, USA during 1997–2000 to quantify carbon exchange and its interannual variability. This prairie is dominated… More

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Objective Threshold Determination For Nighttime Eddy Flux Filtering

by Fianna O'Brien - January 27, 2017

We recommend an automated statistical method (Moving Point Test, or MPT) to determine the friction velocity (u*) thresholds in nighttime eddy flux filtering. Our intention is to make the determination… More

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Year-Round Observations Of The Net Ecosystem Exchange Of Carbon Dioxide In A Native Tallgrass Prairie

by Fianna O'Brien - January 25, 2017

An Ameriflux site was established in mid 1996 to study the exchange of CO2 in a native tallgrass prairie of north-central Oklahoma, USA. Approximately the first 20 months of measurements… More

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