Drought increase since the mid-20th century in the northern South American Altiplano revealed by a 389-year precipitation record
- Autores
- Morales, Mariano Santos; Crispín Delacruz, Doris B.; Álvarez, Claudio; Duncan, A. Christie; Ferrero, Maria Eugenia; Andreu Hayles, Laia; Villalba, Ricardo; Guerra, Anthony; Ticse Otarola, Ginette Vilma Alicia; Rodríguez Ramírez, Ernesto C.; Llocclla Martínez, Rosmery; Sanchez Ferrer, Joali; Requena Rojas, Edilson Jimmy
- Año de publicación
- 2023
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Given the short span of instrumental precipitation records in the South American Altiplano, longer-term hydroclimatic records are needed to understand the nature of climate variability and to improve the predictability of precipitation, a key natural resource for the socioeconomic development in the Altiplano and adjacent arid lowlands. In this region grows Polylepis tarapacana, a long-lived tree species that is very sensitive to hydroclimatic changes and has been widely used for tree-ring studies in the central and southern Altiplano. However, in the northern sector of the Peruvian and Chilean Altiplano (16-19°S) still exists a gap of high-resolution hydroclimatic data based on tree-ring records. Our study provides an overview of the temporal evolution of the late-spring-mid-summer precipitation for the period 1625-2013 CE at the northern South American Altiplano, allowing for the identification of wet or dry periods based on a regional reconstruction from three P. tarapacana chronologies. An increase in the occurrence of extreme dry events, together with a decreasing trend in the reconstructed precipitation, has been recorded since the 1970s in the northern Altiplano within the context of the last ∼4 centuries. The average precipitation over the last 17 years stands out as the driest in our 389-year reconstruction. We reveal a temporal and spatial synchrony across the Altiplano region of dry conditions since the mid-1970s. Independent tree-ring-based hydroclimate reconstructions and several paleoclimatic records based on other proxies available for the tropical Andes record this synchrony. The influence of El Niño-Southern Oscillation (ENSO) on the northern Altiplano precipitation was detected by our rainfall reconstruction that showed past drier conditions in our study region associated with ENSO warm events. The spectral properties of the rainfall reconstruction showed strong imprints of ENSO variability at decadal, sub-decadal, and inter-annual timescales, in particular from the Pacific NIÑO 3 sector. Overall, the recent reduction in precipitation in comparison with previous centuries, the increase in extreme dry events and the coupling between precipitation and ENSO variability reported by this work is essential information in the context of the growing demand for water resources in the Altiplano. This study will contribute to a better understanding of the vulnerability and resilience of the region to the projected evapotranspiration increase for the 21st century associated with global warming.
Fil: Morales, Mariano Santos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Crispín Delacruz, Doris B.. Universidad Federal Rural Pernambuco; Brasil
Fil: Álvarez, Claudio. Universidad Federal Rural Pernambuco; Brasil. Universidad Austral de Chile; Chile
Fil: Duncan, A. Christie. Universidad Austral de Chile; Chile
Fil: Ferrero, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Andreu Hayles, Laia. Columbia University; Estados Unidos. Consejo Superior de Investigaciones Científicas. Centre de Recerca Ecológica I Aplicacions Forestals; España. Institució Catalana de Recerca i Estudis Avancats; España
Fil: Villalba, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Guerra, Anthony. Universidad Austral de Chile; Chile
Fil: Ticse Otarola, Ginette Vilma Alicia. Universidad Continental; Perú
Fil: Rodríguez Ramírez, Ernesto C.. Universidad Continental; Perú
Fil: Llocclla Martínez, Rosmery. Universidad Continental; Perú
Fil: Sanchez Ferrer, Joali. Universidad Continental; Perú
Fil: Requena Rojas, Edilson Jimmy. Universidad Continental; Perú - Materia
-
Precipitation Reconstruction
Tree-ring proxy
Northern Altiplano
Paleoclimate - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/233217
Ver los metadatos del registro completo
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Drought increase since the mid-20th century in the northern South American Altiplano revealed by a 389-year precipitation recordMorales, Mariano SantosCrispín Delacruz, Doris B.Álvarez, ClaudioDuncan, A. ChristieFerrero, Maria EugeniaAndreu Hayles, LaiaVillalba, RicardoGuerra, AnthonyTicse Otarola, Ginette Vilma AliciaRodríguez Ramírez, Ernesto C.Llocclla Martínez, RosmerySanchez Ferrer, JoaliRequena Rojas, Edilson JimmyPrecipitation ReconstructionTree-ring proxyNorthern AltiplanoPaleoclimatehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Given the short span of instrumental precipitation records in the South American Altiplano, longer-term hydroclimatic records are needed to understand the nature of climate variability and to improve the predictability of precipitation, a key natural resource for the socioeconomic development in the Altiplano and adjacent arid lowlands. In this region grows Polylepis tarapacana, a long-lived tree species that is very sensitive to hydroclimatic changes and has been widely used for tree-ring studies in the central and southern Altiplano. However, in the northern sector of the Peruvian and Chilean Altiplano (16-19°S) still exists a gap of high-resolution hydroclimatic data based on tree-ring records. Our study provides an overview of the temporal evolution of the late-spring-mid-summer precipitation for the period 1625-2013 CE at the northern South American Altiplano, allowing for the identification of wet or dry periods based on a regional reconstruction from three P. tarapacana chronologies. An increase in the occurrence of extreme dry events, together with a decreasing trend in the reconstructed precipitation, has been recorded since the 1970s in the northern Altiplano within the context of the last ∼4 centuries. The average precipitation over the last 17 years stands out as the driest in our 389-year reconstruction. We reveal a temporal and spatial synchrony across the Altiplano region of dry conditions since the mid-1970s. Independent tree-ring-based hydroclimate reconstructions and several paleoclimatic records based on other proxies available for the tropical Andes record this synchrony. The influence of El Niño-Southern Oscillation (ENSO) on the northern Altiplano precipitation was detected by our rainfall reconstruction that showed past drier conditions in our study region associated with ENSO warm events. The spectral properties of the rainfall reconstruction showed strong imprints of ENSO variability at decadal, sub-decadal, and inter-annual timescales, in particular from the Pacific NIÑO 3 sector. Overall, the recent reduction in precipitation in comparison with previous centuries, the increase in extreme dry events and the coupling between precipitation and ENSO variability reported by this work is essential information in the context of the growing demand for water resources in the Altiplano. This study will contribute to a better understanding of the vulnerability and resilience of the region to the projected evapotranspiration increase for the 21st century associated with global warming.Fil: Morales, Mariano Santos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Crispín Delacruz, Doris B.. Universidad Federal Rural Pernambuco; BrasilFil: Álvarez, Claudio. Universidad Federal Rural Pernambuco; Brasil. Universidad Austral de Chile; ChileFil: Duncan, A. Christie. Universidad Austral de Chile; ChileFil: Ferrero, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Andreu Hayles, Laia. Columbia University; Estados Unidos. Consejo Superior de Investigaciones Científicas. Centre de Recerca Ecológica I Aplicacions Forestals; España. Institució Catalana de Recerca i Estudis Avancats; EspañaFil: Villalba, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Guerra, Anthony. Universidad Austral de Chile; ChileFil: Ticse Otarola, Ginette Vilma Alicia. Universidad Continental; PerúFil: Rodríguez Ramírez, Ernesto C.. Universidad Continental; PerúFil: Llocclla Martínez, Rosmery. Universidad Continental; PerúFil: Sanchez Ferrer, Joali. Universidad Continental; PerúFil: Requena Rojas, Edilson Jimmy. Universidad Continental; PerúCopernicus Publications2023-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/233217Morales, Mariano Santos; Crispín Delacruz, Doris B.; Álvarez, Claudio; Duncan, A. Christie; Ferrero, Maria Eugenia; et al.; Drought increase since the mid-20th century in the northern South American Altiplano revealed by a 389-year precipitation record; Copernicus Publications; Climate of the Past; 19; 2; 2-2023; 457-4761814-93241814-9332CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://cp.copernicus.org/articles/19/457/2023/info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-19-457-2023info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:12:30Zoai:ri.conicet.gov.ar:11336/233217instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:12:30.605CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Drought increase since the mid-20th century in the northern South American Altiplano revealed by a 389-year precipitation record |
| title |
Drought increase since the mid-20th century in the northern South American Altiplano revealed by a 389-year precipitation record |
| spellingShingle |
Drought increase since the mid-20th century in the northern South American Altiplano revealed by a 389-year precipitation record Morales, Mariano Santos Precipitation Reconstruction Tree-ring proxy Northern Altiplano Paleoclimate |
| title_short |
Drought increase since the mid-20th century in the northern South American Altiplano revealed by a 389-year precipitation record |
| title_full |
Drought increase since the mid-20th century in the northern South American Altiplano revealed by a 389-year precipitation record |
| title_fullStr |
Drought increase since the mid-20th century in the northern South American Altiplano revealed by a 389-year precipitation record |
| title_full_unstemmed |
Drought increase since the mid-20th century in the northern South American Altiplano revealed by a 389-year precipitation record |
| title_sort |
Drought increase since the mid-20th century in the northern South American Altiplano revealed by a 389-year precipitation record |
| dc.creator.none.fl_str_mv |
Morales, Mariano Santos Crispín Delacruz, Doris B. Álvarez, Claudio Duncan, A. Christie Ferrero, Maria Eugenia Andreu Hayles, Laia Villalba, Ricardo Guerra, Anthony Ticse Otarola, Ginette Vilma Alicia Rodríguez Ramírez, Ernesto C. Llocclla Martínez, Rosmery Sanchez Ferrer, Joali Requena Rojas, Edilson Jimmy |
| author |
Morales, Mariano Santos |
| author_facet |
Morales, Mariano Santos Crispín Delacruz, Doris B. Álvarez, Claudio Duncan, A. Christie Ferrero, Maria Eugenia Andreu Hayles, Laia Villalba, Ricardo Guerra, Anthony Ticse Otarola, Ginette Vilma Alicia Rodríguez Ramírez, Ernesto C. Llocclla Martínez, Rosmery Sanchez Ferrer, Joali Requena Rojas, Edilson Jimmy |
| author_role |
author |
| author2 |
Crispín Delacruz, Doris B. Álvarez, Claudio Duncan, A. Christie Ferrero, Maria Eugenia Andreu Hayles, Laia Villalba, Ricardo Guerra, Anthony Ticse Otarola, Ginette Vilma Alicia Rodríguez Ramírez, Ernesto C. Llocclla Martínez, Rosmery Sanchez Ferrer, Joali Requena Rojas, Edilson Jimmy |
| author2_role |
author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Precipitation Reconstruction Tree-ring proxy Northern Altiplano Paleoclimate |
| topic |
Precipitation Reconstruction Tree-ring proxy Northern Altiplano Paleoclimate |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
Given the short span of instrumental precipitation records in the South American Altiplano, longer-term hydroclimatic records are needed to understand the nature of climate variability and to improve the predictability of precipitation, a key natural resource for the socioeconomic development in the Altiplano and adjacent arid lowlands. In this region grows Polylepis tarapacana, a long-lived tree species that is very sensitive to hydroclimatic changes and has been widely used for tree-ring studies in the central and southern Altiplano. However, in the northern sector of the Peruvian and Chilean Altiplano (16-19°S) still exists a gap of high-resolution hydroclimatic data based on tree-ring records. Our study provides an overview of the temporal evolution of the late-spring-mid-summer precipitation for the period 1625-2013 CE at the northern South American Altiplano, allowing for the identification of wet or dry periods based on a regional reconstruction from three P. tarapacana chronologies. An increase in the occurrence of extreme dry events, together with a decreasing trend in the reconstructed precipitation, has been recorded since the 1970s in the northern Altiplano within the context of the last ∼4 centuries. The average precipitation over the last 17 years stands out as the driest in our 389-year reconstruction. We reveal a temporal and spatial synchrony across the Altiplano region of dry conditions since the mid-1970s. Independent tree-ring-based hydroclimate reconstructions and several paleoclimatic records based on other proxies available for the tropical Andes record this synchrony. The influence of El Niño-Southern Oscillation (ENSO) on the northern Altiplano precipitation was detected by our rainfall reconstruction that showed past drier conditions in our study region associated with ENSO warm events. The spectral properties of the rainfall reconstruction showed strong imprints of ENSO variability at decadal, sub-decadal, and inter-annual timescales, in particular from the Pacific NIÑO 3 sector. Overall, the recent reduction in precipitation in comparison with previous centuries, the increase in extreme dry events and the coupling between precipitation and ENSO variability reported by this work is essential information in the context of the growing demand for water resources in the Altiplano. This study will contribute to a better understanding of the vulnerability and resilience of the region to the projected evapotranspiration increase for the 21st century associated with global warming. Fil: Morales, Mariano Santos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina Fil: Crispín Delacruz, Doris B.. Universidad Federal Rural Pernambuco; Brasil Fil: Álvarez, Claudio. Universidad Federal Rural Pernambuco; Brasil. Universidad Austral de Chile; Chile Fil: Duncan, A. Christie. Universidad Austral de Chile; Chile Fil: Ferrero, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina Fil: Andreu Hayles, Laia. Columbia University; Estados Unidos. Consejo Superior de Investigaciones Científicas. Centre de Recerca Ecológica I Aplicacions Forestals; España. Institució Catalana de Recerca i Estudis Avancats; España Fil: Villalba, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina Fil: Guerra, Anthony. Universidad Austral de Chile; Chile Fil: Ticse Otarola, Ginette Vilma Alicia. Universidad Continental; Perú Fil: Rodríguez Ramírez, Ernesto C.. Universidad Continental; Perú Fil: Llocclla Martínez, Rosmery. Universidad Continental; Perú Fil: Sanchez Ferrer, Joali. Universidad Continental; Perú Fil: Requena Rojas, Edilson Jimmy. Universidad Continental; Perú |
| description |
Given the short span of instrumental precipitation records in the South American Altiplano, longer-term hydroclimatic records are needed to understand the nature of climate variability and to improve the predictability of precipitation, a key natural resource for the socioeconomic development in the Altiplano and adjacent arid lowlands. In this region grows Polylepis tarapacana, a long-lived tree species that is very sensitive to hydroclimatic changes and has been widely used for tree-ring studies in the central and southern Altiplano. However, in the northern sector of the Peruvian and Chilean Altiplano (16-19°S) still exists a gap of high-resolution hydroclimatic data based on tree-ring records. Our study provides an overview of the temporal evolution of the late-spring-mid-summer precipitation for the period 1625-2013 CE at the northern South American Altiplano, allowing for the identification of wet or dry periods based on a regional reconstruction from three P. tarapacana chronologies. An increase in the occurrence of extreme dry events, together with a decreasing trend in the reconstructed precipitation, has been recorded since the 1970s in the northern Altiplano within the context of the last ∼4 centuries. The average precipitation over the last 17 years stands out as the driest in our 389-year reconstruction. We reveal a temporal and spatial synchrony across the Altiplano region of dry conditions since the mid-1970s. Independent tree-ring-based hydroclimate reconstructions and several paleoclimatic records based on other proxies available for the tropical Andes record this synchrony. The influence of El Niño-Southern Oscillation (ENSO) on the northern Altiplano precipitation was detected by our rainfall reconstruction that showed past drier conditions in our study region associated with ENSO warm events. The spectral properties of the rainfall reconstruction showed strong imprints of ENSO variability at decadal, sub-decadal, and inter-annual timescales, in particular from the Pacific NIÑO 3 sector. Overall, the recent reduction in precipitation in comparison with previous centuries, the increase in extreme dry events and the coupling between precipitation and ENSO variability reported by this work is essential information in the context of the growing demand for water resources in the Altiplano. This study will contribute to a better understanding of the vulnerability and resilience of the region to the projected evapotranspiration increase for the 21st century associated with global warming. |
| publishDate |
2023 |
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2023-02 |
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http://hdl.handle.net/11336/233217 Morales, Mariano Santos; Crispín Delacruz, Doris B.; Álvarez, Claudio; Duncan, A. Christie; Ferrero, Maria Eugenia; et al.; Drought increase since the mid-20th century in the northern South American Altiplano revealed by a 389-year precipitation record; Copernicus Publications; Climate of the Past; 19; 2; 2-2023; 457-476 1814-9324 1814-9332 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/233217 |
| identifier_str_mv |
Morales, Mariano Santos; Crispín Delacruz, Doris B.; Álvarez, Claudio; Duncan, A. Christie; Ferrero, Maria Eugenia; et al.; Drought increase since the mid-20th century in the northern South American Altiplano revealed by a 389-year precipitation record; Copernicus Publications; Climate of the Past; 19; 2; 2-2023; 457-476 1814-9324 1814-9332 CONICET Digital CONICET |
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eng |
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