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100.1.#.a: Bobba, M.E; Minetti, J. L.

524.#.#.a: Bobba, M.E, et al. (2010). South American atmospheric circulation anomalies related to droughts in the northwest of Argentina (1951-1980). Atmósfera; Vol. 23 No. 3, 2010. Recuperado de https://repositorio.unam.mx/contenidos/11172

245.1.0.a: South American atmospheric circulation anomalies related to droughts in the northwest of Argentina (1951-1980)

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM

264.#.0.c: 2010

264.#.1.c: 2010-09-22

653.#.#.a: Drought; atmospheric pressure anomaly; circulation; Drought; atmospheric pressure anomaly; circulation

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC 4.0 Internacional, https://creativecommons.org/licenses/by-nc/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico editora@atmosfera.unam.mx

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041.#.7.h: eng

520.3.#.a: Based on a regional drought index carried out by other authors (Minetti et al., 2004), it has been possible to associate droughts with atmospheric pressure anomalies in South America. We attempted to group the fields of atmospheric pressure anomalies, which show circulation changes, with these drought indexes. We applied Lund’s methodology based on a monthly, seasonal and annual scale. It has been possible to select a small number of severe droughts related to circulation. Consequently, we conclude that some severe droughts are associated with the factors listed below. The main circulation alterations related to droughts describe in most cases the following: a) significant mountain range gradients, in this case we include the one that intensifies the western zonal flow (west-east) over Patagonia, which generates an anticyclogenesis on the Pacific Ocean coast and a cyclogenesis on the continent, b) anticyclonic subsidence, c) weakness of the north humid flow due to a diminution of the gradient between the Atlantic Ocean anticyclone and the continental depression and/or subsidence associated with the flow coming from this direction.

773.1.#.t: Atmósfera; Vol. 23 No. 3 (2010)

773.1.#.o: https://www.revistascca.unam.mx/atm/index.php/atm/index

046.#.#.j: 2021-10-20 00:00:00.000000

022.#.#.a: ISSN electrónico: 2395-8812; ISSN impreso: 0187-6236

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264.#.1.b: Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM

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harvesting_date: 2023-06-20 16:00:00.0

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245.1.0.b: South American atmospheric circulation anomalies related to droughts in the northwest of Argentina (1951-1980)

last_modified: 2023-06-20 16:00:00

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Artículo

South American atmospheric circulation anomalies related to droughts in the northwest of Argentina (1951-1980)

Bobba, M.E; Minetti, J. L.

Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM, publicado en Atmósfera, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Bobba, M.E, et al. (2010). South American atmospheric circulation anomalies related to droughts in the northwest of Argentina (1951-1980). Atmósfera; Vol. 23 No. 3, 2010. Recuperado de https://repositorio.unam.mx/contenidos/11172

Descripción del recurso

Autor(es)
Bobba, M.E; Minetti, J. L.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
South American atmospheric circulation anomalies related to droughts in the northwest of Argentina (1951-1980)
Fecha
2010-09-22
Resumen
Based on a regional drought index carried out by other authors (Minetti et al., 2004), it has been possible to associate droughts with atmospheric pressure anomalies in South America. We attempted to group the fields of atmospheric pressure anomalies, which show circulation changes, with these drought indexes. We applied Lund’s methodology based on a monthly, seasonal and annual scale. It has been possible to select a small number of severe droughts related to circulation. Consequently, we conclude that some severe droughts are associated with the factors listed below. The main circulation alterations related to droughts describe in most cases the following: a) significant mountain range gradients, in this case we include the one that intensifies the western zonal flow (west-east) over Patagonia, which generates an anticyclogenesis on the Pacific Ocean coast and a cyclogenesis on the continent, b) anticyclonic subsidence, c) weakness of the north humid flow due to a diminution of the gradient between the Atlantic Ocean anticyclone and the continental depression and/or subsidence associated with the flow coming from this direction.
Tema
Drought; atmospheric pressure anomaly; circulation; Drought; atmospheric pressure anomaly; circulation
Idioma
eng
ISSN
ISSN electrónico: 2395-8812; ISSN impreso: 0187-6236

Enlaces