Historical climatic extremes as indicators for typical scenarios of Holocene climatic periods in the Pampean plain

Autores
Iriondo, Martin Horacio; Brunetto, Ernesto; Krohling, Daniela Mariel Ines
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Holocene has been marked by two different climatic periods in the Pampas, one (8.5-3.5 kyr B.P.), characterized by temperatures and precipitation higher than today and the other (3.5-1.4 kyr B.P.) semiarid, generating parabolic dunes. The humid period produced intense pedogenesis down to 40° lat. S and a mobilization of iron oxides to 30° lat. S, which means tropical climate with temperatures above 20 °C and precipitation higher than 2000 mm/yr. Sand deflation and development of parabolic dunes occur under climates with 300-400 mm/yr. This contribution is based on geological and physical proxies. Typical weather scenarios of those climates are sporadically reproduced today during extremely humid or dry periods. On that basis, meteorological parameters of years beyond the thresholds of 2000 and 400 mm/yr were processed. Dry periods were characterized by a large thermal amplitude, frosts and stronger winds, reproducing the continental anticyclonic circulation of the Late Holocene. Humid extremes were warmer than normal (lower thermal amplitude), with rains produced by local convection processes. Typical scenarios with precipitation above 2000 mm/yr are: 21 °C mean temperature (ca. 1 °C higher than the Present record); 27 °C maximal annual temperatures; 16 °C minimal annual temperatures (more than 1 °C higher than the Present); as a consequence, thermal amplitude was smaller than today, virtually without frosts. Characteristic parameters of the Late Holocene were: mean annual precipitation ca. 350 mm/yr; 15 °C mean temperature; 22 °C maximal annual temperatures; 8 °C minimal annual temperatures, showing significative shifts in the dry season (lower than normal); monthly maximal and mean temperatures higher than today. The result is a thermal amplitude larger than today. Probably, higher quantity of frosts per year, stronger winds and lower relative air humidity in comparison with the humid climate extreme, complete the scenario.
Fil: Iriondo, Martin Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Brunetto, Ernesto. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina
Fil: Krohling, Daniela Mariel Ines. Universidad Nacional del Litoral; Argentina
Materia
SOUTH AMERICA
PAMPEAN REGION
QUATERNARY GEOLOGY
CLIMATIC EXTREMES
HOLOCENE CLIMATIC OPTIMUM
LATE HOLOCENE DRY PERIOD
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/97598
Acceder
id CONICETDig_9107ed505180079e0d27463a8306566a
oai_identifier_str oai:ri.conicet.gov.ar:11336/97598
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Historical climatic extremes as indicators for typical scenarios of Holocene climatic periods in the Pampean plainIriondo, Martin HoracioBrunetto, ErnestoKrohling, Daniela Mariel InesSOUTH AMERICAPAMPEAN REGIONQUATERNARY GEOLOGYCLIMATIC EXTREMESHOLOCENE CLIMATIC OPTIMUMLATE HOLOCENE DRY PERIODhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Holocene has been marked by two different climatic periods in the Pampas, one (8.5-3.5 kyr B.P.), characterized by temperatures and precipitation higher than today and the other (3.5-1.4 kyr B.P.) semiarid, generating parabolic dunes. The humid period produced intense pedogenesis down to 40° lat. S and a mobilization of iron oxides to 30° lat. S, which means tropical climate with temperatures above 20 °C and precipitation higher than 2000 mm/yr. Sand deflation and development of parabolic dunes occur under climates with 300-400 mm/yr. This contribution is based on geological and physical proxies. Typical weather scenarios of those climates are sporadically reproduced today during extremely humid or dry periods. On that basis, meteorological parameters of years beyond the thresholds of 2000 and 400 mm/yr were processed. Dry periods were characterized by a large thermal amplitude, frosts and stronger winds, reproducing the continental anticyclonic circulation of the Late Holocene. Humid extremes were warmer than normal (lower thermal amplitude), with rains produced by local convection processes. Typical scenarios with precipitation above 2000 mm/yr are: 21 °C mean temperature (ca. 1 °C higher than the Present record); 27 °C maximal annual temperatures; 16 °C minimal annual temperatures (more than 1 °C higher than the Present); as a consequence, thermal amplitude was smaller than today, virtually without frosts. Characteristic parameters of the Late Holocene were: mean annual precipitation ca. 350 mm/yr; 15 °C mean temperature; 22 °C maximal annual temperatures; 8 °C minimal annual temperatures, showing significative shifts in the dry season (lower than normal); monthly maximal and mean temperatures higher than today. The result is a thermal amplitude larger than today. Probably, higher quantity of frosts per year, stronger winds and lower relative air humidity in comparison with the humid climate extreme, complete the scenario.Fil: Iriondo, Martin Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Brunetto, Ernesto. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; ArgentinaFil: Krohling, Daniela Mariel Ines. Universidad Nacional del Litoral; ArgentinaElsevier Science2009-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/97598Iriondo, Martin Horacio; Brunetto, Ernesto; Krohling, Daniela Mariel Ines; Historical climatic extremes as indicators for typical scenarios of Holocene climatic periods in the Pampean plain; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 283; 3-4; 12-2009; 107-1190031-0182CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2009.09.005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:07:51Zoai:ri.conicet.gov.ar:11336/97598instacron: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:34982025-10-22 12:07:51.398CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Historical climatic extremes as indicators for typical scenarios of Holocene climatic periods in the Pampean plain
title Historical climatic extremes as indicators for typical scenarios of Holocene climatic periods in the Pampean plain
spellingShingle Historical climatic extremes as indicators for typical scenarios of Holocene climatic periods in the Pampean plain
Iriondo, Martin Horacio
SOUTH AMERICA
PAMPEAN REGION
QUATERNARY GEOLOGY
CLIMATIC EXTREMES
HOLOCENE CLIMATIC OPTIMUM
LATE HOLOCENE DRY PERIOD
title_short Historical climatic extremes as indicators for typical scenarios of Holocene climatic periods in the Pampean plain
title_full Historical climatic extremes as indicators for typical scenarios of Holocene climatic periods in the Pampean plain
title_fullStr Historical climatic extremes as indicators for typical scenarios of Holocene climatic periods in the Pampean plain
title_full_unstemmed Historical climatic extremes as indicators for typical scenarios of Holocene climatic periods in the Pampean plain
title_sort Historical climatic extremes as indicators for typical scenarios of Holocene climatic periods in the Pampean plain
dc.creator.none.fl_str_mv Iriondo, Martin Horacio
Brunetto, Ernesto
Krohling, Daniela Mariel Ines
author Iriondo, Martin Horacio
author_facet Iriondo, Martin Horacio
Brunetto, Ernesto
Krohling, Daniela Mariel Ines
author_role author
author2 Brunetto, Ernesto
Krohling, Daniela Mariel Ines
author2_role author
author
dc.subject.none.fl_str_mv SOUTH AMERICA
PAMPEAN REGION
QUATERNARY GEOLOGY
CLIMATIC EXTREMES
HOLOCENE CLIMATIC OPTIMUM
LATE HOLOCENE DRY PERIOD
topic SOUTH AMERICA
PAMPEAN REGION
QUATERNARY GEOLOGY
CLIMATIC EXTREMES
HOLOCENE CLIMATIC OPTIMUM
LATE HOLOCENE DRY PERIOD
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Holocene has been marked by two different climatic periods in the Pampas, one (8.5-3.5 kyr B.P.), characterized by temperatures and precipitation higher than today and the other (3.5-1.4 kyr B.P.) semiarid, generating parabolic dunes. The humid period produced intense pedogenesis down to 40° lat. S and a mobilization of iron oxides to 30° lat. S, which means tropical climate with temperatures above 20 °C and precipitation higher than 2000 mm/yr. Sand deflation and development of parabolic dunes occur under climates with 300-400 mm/yr. This contribution is based on geological and physical proxies. Typical weather scenarios of those climates are sporadically reproduced today during extremely humid or dry periods. On that basis, meteorological parameters of years beyond the thresholds of 2000 and 400 mm/yr were processed. Dry periods were characterized by a large thermal amplitude, frosts and stronger winds, reproducing the continental anticyclonic circulation of the Late Holocene. Humid extremes were warmer than normal (lower thermal amplitude), with rains produced by local convection processes. Typical scenarios with precipitation above 2000 mm/yr are: 21 °C mean temperature (ca. 1 °C higher than the Present record); 27 °C maximal annual temperatures; 16 °C minimal annual temperatures (more than 1 °C higher than the Present); as a consequence, thermal amplitude was smaller than today, virtually without frosts. Characteristic parameters of the Late Holocene were: mean annual precipitation ca. 350 mm/yr; 15 °C mean temperature; 22 °C maximal annual temperatures; 8 °C minimal annual temperatures, showing significative shifts in the dry season (lower than normal); monthly maximal and mean temperatures higher than today. The result is a thermal amplitude larger than today. Probably, higher quantity of frosts per year, stronger winds and lower relative air humidity in comparison with the humid climate extreme, complete the scenario.
Fil: Iriondo, Martin Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Brunetto, Ernesto. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina
Fil: Krohling, Daniela Mariel Ines. Universidad Nacional del Litoral; Argentina
description The Holocene has been marked by two different climatic periods in the Pampas, one (8.5-3.5 kyr B.P.), characterized by temperatures and precipitation higher than today and the other (3.5-1.4 kyr B.P.) semiarid, generating parabolic dunes. The humid period produced intense pedogenesis down to 40° lat. S and a mobilization of iron oxides to 30° lat. S, which means tropical climate with temperatures above 20 °C and precipitation higher than 2000 mm/yr. Sand deflation and development of parabolic dunes occur under climates with 300-400 mm/yr. This contribution is based on geological and physical proxies. Typical weather scenarios of those climates are sporadically reproduced today during extremely humid or dry periods. On that basis, meteorological parameters of years beyond the thresholds of 2000 and 400 mm/yr were processed. Dry periods were characterized by a large thermal amplitude, frosts and stronger winds, reproducing the continental anticyclonic circulation of the Late Holocene. Humid extremes were warmer than normal (lower thermal amplitude), with rains produced by local convection processes. Typical scenarios with precipitation above 2000 mm/yr are: 21 °C mean temperature (ca. 1 °C higher than the Present record); 27 °C maximal annual temperatures; 16 °C minimal annual temperatures (more than 1 °C higher than the Present); as a consequence, thermal amplitude was smaller than today, virtually without frosts. Characteristic parameters of the Late Holocene were: mean annual precipitation ca. 350 mm/yr; 15 °C mean temperature; 22 °C maximal annual temperatures; 8 °C minimal annual temperatures, showing significative shifts in the dry season (lower than normal); monthly maximal and mean temperatures higher than today. The result is a thermal amplitude larger than today. Probably, higher quantity of frosts per year, stronger winds and lower relative air humidity in comparison with the humid climate extreme, complete the scenario.
publishDate 2009
dc.date.none.fl_str_mv 2009-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/97598
Iriondo, Martin Horacio; Brunetto, Ernesto; Krohling, Daniela Mariel Ines; Historical climatic extremes as indicators for typical scenarios of Holocene climatic periods in the Pampean plain; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 283; 3-4; 12-2009; 107-119
0031-0182
CONICET Digital
CONICET
url http://hdl.handle.net/11336/97598
identifier_str_mv Iriondo, Martin Horacio; Brunetto, Ernesto; Krohling, Daniela Mariel Ines; Historical climatic extremes as indicators for typical scenarios of Holocene climatic periods in the Pampean plain; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 283; 3-4; 12-2009; 107-119
0031-0182
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2009.09.005
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846782445486080000
score 12.982451

Publicaciones similares