Increased floodplain inundation in the Amazon since 1980
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Date
2023-03
Publication Type
Journal Article
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yes
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Abstract
Extensive floodplains throughout the Amazon basin support important ecosystem services and influence global water and carbon cycles. A recent change in the hydroclimatic regime of the region, with increased rainfall in the northern portions of the basin, has produced record-breaking high water levels on the Amazon River mainstem. Yet, the implications for the magnitude and duration of floodplain inundation across the basin remain unknown. Here we leverage state-of-the-art hydrological models, supported by in-situ and remote sensing observations, to show that the maximum annual inundation extent along the central Amazon increased by 26% since 1980. We further reveal increased flood duration and greater connectivity among open water areas in multiple Amazon floodplain regions. These changes in the hydrological regime of the world’s largest river system have major implications for ecology and biogeochemistry, and require rapid adaptation by vulnerable populations living along Amazonian rivers.
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published
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Journal / series
Volume
18 (3)
Pages / Article No.
34024
Publisher
IOP Publishing
Event
Edition / version
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Software
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Date collected
Date created
Subject
climate change; wetlands; remote sensing; connectivity; Amazon River basin
Organisational unit
03778 - Seneviratne, Sonia / Seneviratne, Sonia