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  A possible deforestation-induced synoptic-scale circulation that delays the rainy season onset in Amazonia

Commar, L. F. S., Abrahão, G. M., Costa, M. H. (2023): A possible deforestation-induced synoptic-scale circulation that delays the rainy season onset in Amazonia. - Environmental Research Letters, 18, 4, 044041.
https://doi.org/10.1088/1748-9326/acc95f

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Commar_2023_Environ._Res._Lett._18_044041.pdf (Publisher version), 3MB
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 Creators:
Commar , Luiz Felipe Sant’Anna1, Author
Abrahão, Gabriel Medeiros2, Author              
Costa, Marcos Heil1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, ou_persistent13              

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 Abstract: The physical hydroclimate system of the Amazon functions on several spatial and temporal scales. Large-scale processes control the main seasonal patterns of atmospheric circulation and rainfall. Seasonal variability in solar forcing, associated with the low rainforest albedo, provides energy for continental heating, convection, and the onset of the South American monsoon. Mesoscale processes cause localized circulations such as river breeze and deforestation breeze. We assessed the impact of different deforestation scenarios for the mid-century last decade rainy season. Here we describe a yet unreported synoptic-scale circulation that delays the rainy season onset in southern Amazonia. This model-predicted circulation is driven by extensive (ca. 40%) deforestation patterns and may last as long as two months. This persistent anomalous circulation may result in a rainy season onset delay of 30–40 d compared to the historical period. Like other synoptic-scale phenomena, differences in surface heating drive this circulation. Given the unabated deforestation trends, the consequences for local ecosystems, agriculture, and power generation of delayed rainy season onset associated with this circulation may be difficult to revert.

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Language(s): eng - English
 Dates: 2022-12-212023-03-312023-04-112023-04-11
 Publication Status: Finally published
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1088/1748-9326/acc95f
MDB-ID: No data to archive
Organisational keyword: RD3 - Transformation Pathways
PIKDOMAIN: RD3 - Transformation Pathways
Working Group: Macroeconomic modeling of climate change mitigation and impacts
Regional keyword: South America
Research topic keyword: Food & Agriculture
Research topic keyword: Forest
Research topic keyword: Ecosystems
Model / method: Quantitative Methods
OATYPE: Gold Open Access
 Degree: -

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Title: Environmental Research Letters
Source Genre: Journal, SCI, Scopus, p3, oa
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Pages: - Volume / Issue: 18 (4) Sequence Number: 044041 Start / End Page: - Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/150326
Publisher: IOP Publishing