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dc.contributor.author
Hadad, Martín Ariel  
dc.contributor.author
Arco Molina, Julieta Gabriela  
dc.contributor.author
Roig Junent, Fidel Alejandro  
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Amoroso, Mariano Martin  
dc.contributor.author
Muller, Gabriela Viviana  
dc.contributor.author
Araneo, Diego Christian  
dc.contributor.author
Tardif, Jacques C.  
dc.date.available
2021-02-08T12:55:09Z  
dc.date.issued
2019-06  
dc.identifier.citation
Hadad, Martín Ariel; Arco Molina, Julieta Gabriela; Roig Junent, Fidel Alejandro; Amoroso, Mariano Martin; Muller, Gabriela Viviana; et al.; Frost record in tree rings linked to atmospheric circulation in northern Patagonia; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 524; 6-2019; 201-211  
dc.identifier.issn
0031-0182  
dc.identifier.uri
http://hdl.handle.net/11336/125064  
dc.description.abstract
Cold air incursions over subtropical South America are the precursor conditions for frost, a recognized extreme thermal weather event affecting plant growth damaging agricultural production over the whole Argentinian territory. Given that sub-freezing temperatures occurring during the active growing season may harm the cambium tissues and their daughter cells, frost injury can be recorded in annual tree rings in the form of anatomical anomalies. For this study, six forest sites of Araucaria araucana, a multi-centennial tree species, from NW Patagonia were considered. From 321 trees, 1374 frost injuries in the growth rings, named frost rings, were identified and their calendar dating allowed the development of a regional chronology of frost rings covering the period AD 1256 to AD 1993 (738 yrs.). This represents the longest record at present of extreme low thermal events for Patagonia. Frost injuries were mostly restricted to the middle section of the growth rings, suggesting the incidence of late spring frosts. Moreover, frost rings were observed mainly in the juvenile portions (<50 yrs. of age and <6 cm in stem diameter) of the tree stem, indicating that young trees display a greater sensitivity to frost events. Large-scale geographical freezing events were recorded in the years AD 1889, 1916, 1941 and 1948. The atmospheric genesis of these events was sustained by a trough at 500 hPa approaching from the west toward the continent, along with an approach of the Pacific anticyclone at 1000 hPa which invaded the southern part of South America on the day of the frost event. At the hemispheric scale, it was found that atmospheric circulation patterns related to La Niña were associated with the regional frost ring record in A. araucana. The regional frost ring record from A. araucana is proposed as a regional proxy of sub-freezing temperatures in paleoclimate reconstruction and as a background for models about the future behavior of the climate in scenarios of change.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
ARAUCARIA ARAUCANA  
dc.subject
DENDROCLIMATOLOGY  
dc.subject
EXTREME CLIMATIC EVENT  
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FROST RING  
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LA NIÑA EVENT  
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SOUTHERN HEMISPHERE  
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SUB-FREEZING TEMPERATURE  
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Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Frost record in tree rings linked to atmospheric circulation in northern Patagonia  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2020-11-19T21:48:33Z  
dc.journal.volume
524  
dc.journal.pagination
201-211  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Hadad, Martín Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina  
dc.description.fil
Fil: Arco Molina, Julieta Gabriela. 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  
dc.description.fil
Fil: Roig Junent, Fidel Alejandro. 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  
dc.description.fil
Fil: Amoroso, Mariano Martin. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Negro. Sede Andina. Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural; Argentina  
dc.description.fil
Fil: Muller, Gabriela Viviana. Universidad Nacional del Litoral. Facultad de Ingenieria y Ciencias Hidricas. Centro de Estudios de Variabilidad y Cambio Climatico.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
dc.description.fil
Fil: Araneo, Diego Christian. 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  
dc.description.fil
Fil: Tardif, Jacques C.. University Of Winnipeg; Canadá  
dc.journal.title
Palaeogeography, Palaeoclimatology, Palaeoecology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.palaeo.2019.03.041