The Relaxed Eddy Accumulation Method Over the Amazon Forest: The Importance of Flux Strength on Individual and Aggregated Flux Estimates

Dias, Nelson Luís; Toro, Ivan Mauricio Cely; Dias-Júnior, Cléo Quaresma; Mortarini, Luca; Brondani, Daiane

doi:10.1007/s10546-023-00829-7

Boundary-Layer Meteorol

2023

DOI: 10.1007/s10546-023-00829-7

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The Relaxed Eddy Accumulation Method Over the Amazon Forest: The Importance of Flux Strength on Individual and Aggregated Flux Estimates

Nelson Luís Dias,

Ivan Mauricio Cely Toro,

Cléo Quaresma Dias-Júnior

et al.

Abstract: The relaxed eddy acumulation method over the Amazon forest: the importance of flux strength on individual and aggregated flux estimates.

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2024

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Tall tower observations of a northward surging gust front in central Amazon and its role in the mesoscale transport of carbon dioxide

Reis,

Oliveira,

Dias‐Júnior

et al. 2024

Meteorological Applications

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High‐frequency measurements obtained at two micrometeorological towers are investigated for a rare northward surging gust front that impacted the Amazon Tall Tower Observatory (ATTO), in central Amazon. The gust front originated from a decaying mesoscale convective system (MCS) during the morning hours of 27 December 2021 near Manaus, Amazonas state, northern Brazil, and surged north‐eastward towards the ATTO site. Large temperature drops and vigorous, persistent winds were observed at the towers which lasted for over 4 h despite the gust front being detached from its parent, decaying MCS. More importantly, the gust front was responsible for drastic increases of CO2 concentrations throughout the tower depths, which suggests that the gust front winds horizontally advected CO2‐rich air from a source upstream from the ATTO site. The CO2‐rich outflow is hypothesized to originate from downward transport and/or biomass burning from forest fires in southeastern Amazon, both ideas that are supported by large increases of aerosol concentrations measured at ATTO following the gust front passage. Our results stress the need for further investigations addressing the role played by mesoscale convective circulations in the redistribution of trace gases and aerosols in the Amazon.

show abstract

Tall tower observations of a northward surging gust front in central Amazon and its role in the mesoscale transport of carbon dioxide

Reis,

Oliveira,

Dias‐Júnior

et al. 2024

Meteorological Applications

View full text Add to dashboard Cite

show abstract

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The Relaxed Eddy Accumulation Method Over the Amazon Forest: The Importance of Flux Strength on Individual and Aggregated Flux Estimates

Abstract: The relaxed eddy acumulation method over the Amazon forest: the importance of flux strength on individual and aggregated flux estimates.

Cited by 1 publication

References 35 publications

Tall tower observations of a northward surging gust front in central Amazon and its role in the mesoscale transport of carbon dioxide

Tall tower observations of a northward surging gust front in central Amazon and its role in the mesoscale transport of carbon dioxide

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