Intensification of the Amazon hydrological cycle over the last two decades
The Amazon basin hosts half the planet's remaining moist tropical forests, but they may be threatened in a warming world. Nevertheless, climate model predictions vary from rapid drying to modest wetting. Here we report that the catchment of the world's largest river is experiencing a substantial wet...
| Autor principal: | Gloor, Manuel E. |
|---|---|
| Outros Autores: | Brienen, Roel J.W., Galbraith, David R., Feldpausch, Ted R., Schöngart, Jochen, Guyot, J. L., Espinoza, J. C., Lloyd, Jon, Phillips, Oliver L. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Geophysical Research Letters
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17877 |
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oai:repositorio:1-17877 |
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oai:repositorio:1-17877 Intensification of the Amazon hydrological cycle over the last two decades Gloor, Manuel E. Brienen, Roel J.W. Galbraith, David R. Feldpausch, Ted R. Schöngart, Jochen Guyot, J. L. Espinoza, J. C. Lloyd, Jon Phillips, Oliver L. Amazon Atmospheric Water Vapor Cycle Hydrological Hydrological Cycles Intertropical Convergence Zone Precipitation Change Tropical Atlantic Atmospheric Temperature Catchments Lasers Wetting Tropics Catchment Climate Modeling Hydrological Cycle Intertropical Convergence Zone Peak Flow Precipitation (climatology) River Discharge Sea Surface Temperature Trend Analysis Warming Wetting-drying Cycle Amazon Basin Atlantic Ocean Atlantic Ocean (north) The Amazon basin hosts half the planet's remaining moist tropical forests, but they may be threatened in a warming world. Nevertheless, climate model predictions vary from rapid drying to modest wetting. Here we report that the catchment of the world's largest river is experiencing a substantial wetting trend since approximately 1990. This intensification of the hydrological cycle is concentrated overwhelmingly in the wet season driving progressively greater differences in Amazon peak and minimum flows. The onset of the trend coincides with the onset of an upward trend in tropical Atlantic sea surface temperatures (SST). This positive longer-term correlation contrasts with the short-term, negative response of basin-wide precipitation to positive anomalies in tropical North Atlantic SST, which are driven by temporary shifts in the intertropical convergence zone position. We propose that the Amazon precipitation changes since 1990 are instead related to increasing atmospheric water vapor import from the warming tropical Atlantic. Key PointsIntensification of Amazon Hydrological Cycle since 1990Revealed by both river discharge and precipitation recordsIn parallel onset of tropical Atlantic warming offering explanation ©2013. American Geophysical Union. All Rights Reserved. 2020-06-15T21:49:48Z 2020-06-15T21:49:48Z 2013 Artigo https://repositorio.inpa.gov.br/handle/1/17877 10.1002/grl.50377 en Volume 40, Número 9, Pags. 1729-1733 Restrito Geophysical Research Letters |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Amazon Atmospheric Water Vapor Cycle Hydrological Hydrological Cycles Intertropical Convergence Zone Precipitation Change Tropical Atlantic Atmospheric Temperature Catchments Lasers Wetting Tropics Catchment Climate Modeling Hydrological Cycle Intertropical Convergence Zone Peak Flow Precipitation (climatology) River Discharge Sea Surface Temperature Trend Analysis Warming Wetting-drying Cycle Amazon Basin Atlantic Ocean Atlantic Ocean (north) |
| spellingShingle |
Amazon Atmospheric Water Vapor Cycle Hydrological Hydrological Cycles Intertropical Convergence Zone Precipitation Change Tropical Atlantic Atmospheric Temperature Catchments Lasers Wetting Tropics Catchment Climate Modeling Hydrological Cycle Intertropical Convergence Zone Peak Flow Precipitation (climatology) River Discharge Sea Surface Temperature Trend Analysis Warming Wetting-drying Cycle Amazon Basin Atlantic Ocean Atlantic Ocean (north) Gloor, Manuel E. Intensification of the Amazon hydrological cycle over the last two decades |
| topic_facet |
Amazon Atmospheric Water Vapor Cycle Hydrological Hydrological Cycles Intertropical Convergence Zone Precipitation Change Tropical Atlantic Atmospheric Temperature Catchments Lasers Wetting Tropics Catchment Climate Modeling Hydrological Cycle Intertropical Convergence Zone Peak Flow Precipitation (climatology) River Discharge Sea Surface Temperature Trend Analysis Warming Wetting-drying Cycle Amazon Basin Atlantic Ocean Atlantic Ocean (north) |
| description |
The Amazon basin hosts half the planet's remaining moist tropical forests, but they may be threatened in a warming world. Nevertheless, climate model predictions vary from rapid drying to modest wetting. Here we report that the catchment of the world's largest river is experiencing a substantial wetting trend since approximately 1990. This intensification of the hydrological cycle is concentrated overwhelmingly in the wet season driving progressively greater differences in Amazon peak and minimum flows. The onset of the trend coincides with the onset of an upward trend in tropical Atlantic sea surface temperatures (SST). This positive longer-term correlation contrasts with the short-term, negative response of basin-wide precipitation to positive anomalies in tropical North Atlantic SST, which are driven by temporary shifts in the intertropical convergence zone position. We propose that the Amazon precipitation changes since 1990 are instead related to increasing atmospheric water vapor import from the warming tropical Atlantic. Key PointsIntensification of Amazon Hydrological Cycle since 1990Revealed by both river discharge and precipitation recordsIn parallel onset of tropical Atlantic warming offering explanation ©2013. American Geophysical Union. All Rights Reserved. |
| format |
Artigo |
| author |
Gloor, Manuel E. |
| author2 |
Brienen, Roel J.W. Galbraith, David R. Feldpausch, Ted R. Schöngart, Jochen Guyot, J. L. Espinoza, J. C. Lloyd, Jon Phillips, Oliver L. |
| author2Str |
Brienen, Roel J.W. Galbraith, David R. Feldpausch, Ted R. Schöngart, Jochen Guyot, J. L. Espinoza, J. C. Lloyd, Jon Phillips, Oliver L. |
| title |
Intensification of the Amazon hydrological cycle over the last two decades |
| title_short |
Intensification of the Amazon hydrological cycle over the last two decades |
| title_full |
Intensification of the Amazon hydrological cycle over the last two decades |
| title_fullStr |
Intensification of the Amazon hydrological cycle over the last two decades |
| title_full_unstemmed |
Intensification of the Amazon hydrological cycle over the last two decades |
| title_sort |
intensification of the amazon hydrological cycle over the last two decades |
| publisher |
Geophysical Research Letters |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17877 |
| _version_ |
1787141932871319552 |
| score |
11.755432 |