Articles | Volume 20, issue 11
Atmos. Chem. Phys., 20, 6583–6606, 2020
https://doi.org/10.5194/acp-20-6583-2020

Special issue: Amazon Tall Tower Observatory (ATTO) Special Issue

Atmos. Chem. Phys., 20, 6583–6606, 2020
https://doi.org/10.5194/acp-20-6583-2020

Research article 05 Jun 2020

Research article | 05 Jun 2020

Understanding nighttime methane signals at the Amazon Tall Tower Observatory (ATTO)

Santiago Botía et al.

Data sets

ATTO black carbon data related to this publication B. Holanda, C. Pöhlker, M. Pöhlker, and J. Lavric https://doi.org/10.17617/3.3r

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Short summary
A long record of atmospheric methane concentrations in central Amazonia was analyzed. We describe events in which concentrations at 79 m are higher than at 4 m. These events are more frequent during the nighttime of dry season, but we found no association with fire signals. Instead, we suggest that a combination of nighttime transport and a nearby source could explain such events. Our research gives insights into how methane is transported in the complex nocturnal atmosphere in Amazonia.
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