Baker, JCA orcid.org/0000-0002-3720-4758 and Spracklen, DV (2022) Divergent Representation of Precipitation Recycling in the Amazon and the Congo in CMIP6 Models. Geophysical Research Letters, 49 (10). e2021GL095136. ISSN 0094-8276
Abstract
Moisture evaporated from the land contributing to precipitation in a given area is known as precipitation recycling and needs to be accurately represented in climate models. The Amazon and Congo basins are reported to have the highest precipitation recycling rates globally, but model representation has not yet been assessed over these regions. We evaluated recycling over the Amazon and Congo in 45 Coupled Model Intercomparison Project Phase 6 models. Regional annual means from models and reanalyzes agreed well over both basins. Models captured seasonal variation in recycling over the Congo but there was a large-scale underestimation of recycling during the Amazon dry-to-wet transition season relative to ERA5, caused by models underestimating Amazon evapotranspiration and overestimating incoming wind speed and associated water vapor imports. Both regions show robust declines in precipitation recycling over the next century under future climate-change scenarios. Our results suggest models may underestimate impacts of deforestation on regional precipitation in the Amazon.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022. The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0) (https://creativecommons.org/licenses/by-nc-nd/4.0/) |
Keywords: | deforestation; hydrological cycle; land-atmosphere interactions; land-use change; model evaluation; tropical forest |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds) |
Funding Information: | Funder Grant number EU - European Union 771492 |
Depositing User: | Symplectic Publications |
Date Deposited: | 17 Jun 2022 12:03 |
Last Modified: | 17 Jun 2022 12:03 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1029/2021GL095136 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:187976 |