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.

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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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