dor_id: 4119889

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100.1.#.a: Thomas, Biju; Kasture, S. V.; Satyan, V.

524.#.#.a: Thomas, Biju, et al. (2000). Sensitivity of Asian summer monsoon and tropical circulations to 1987 and 1988 sea surface temperature anomalies. Atmósfera; Vol. 13 No. 3, 2000. Recuperado de https://repositorio.unam.mx/contenidos/4119889

245.1.0.a: Sensitivity of Asian summer monsoon and tropical circulations to 1987 and 1988 sea surface temperature anomalies

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

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

264.#.0.c: 2000

264.#.1.c: 2009-10-05

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041.#.7.h: eng

520.3.#.a: In this work, the impact of Sea Surface Temperatures (SSTs) during 1987 and 1988 on the Northern Hemisphere summer mean monsoon is studied using an Atmospheric General Circulation Model. Four model experiments were carried out to assess the relative impacts of observed SST fields of global(El), tropical(E2), tropical Pacific(E3) and tropical central and eastern Pacific(E4) oceans. It was seen that in El, the model captured a number of important observed circulation and precipitation features of 1987 and 1988 monsoons. The upper tropospheric outflow during 1988 was strong over India, Indian ocean and western Australia and the inflow was strong over central and eastern Pacific oceans. During 1987, the upper tropospheric velocity potential minimum over western Pacific shifted east by 20º of its 1988 position. The Tropical Easterly Jet (TEJ) over equatorial Africa was stronger in 1988 than in 1987. The precipitation maximum over western Pacific shifted to central and eastern Pacific during 1987. Over southern India, south west Indian ocean and parts of Sahel, there was increased rainfall during 1988 compared to 1987. However, it was less over northeast India in 1988 than in 1987. In experiments E2, E3 and E4, the large-scale structures of the upper tropospheric velocity potential difference between 1987 and 1988 were similar to those in El. However, some important changes were seen in E3 and E4. The divergent flow during 1988 was weaker over Indian ocean and monsoon region with the center of velocity potential differences shifted to the east in E3 and E4 than in El. Consistent changes were seen in the wind fields also. The TEJ was weaker during both the years 1987 and 1988 in E3 and E4 than in El.

773.1.#.t: Atmósfera; Vol. 13 No. 3 (2000)

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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handle: 00d0aeb599c1612d

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

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245.1.0.b: Sensitivity of Asian summer monsoon and tropical circulations to 1987 and 1988 sea surface temperature anomalies

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Artículo

Sensitivity of Asian summer monsoon and tropical circulations to 1987 and 1988 sea surface temperature anomalies

Thomas, Biju; Kasture, S. V.; Satyan, V.

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
Atmósfera
Repositorio
Revistas UNAM
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Thomas, Biju, et al. (2000). Sensitivity of Asian summer monsoon and tropical circulations to 1987 and 1988 sea surface temperature anomalies. Atmósfera; Vol. 13 No. 3, 2000. Recuperado de https://repositorio.unam.mx/contenidos/4119889

Descripción del recurso

Autor(es)
Thomas, Biju; Kasture, S. V.; Satyan, V.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Sensitivity of Asian summer monsoon and tropical circulations to 1987 and 1988 sea surface temperature anomalies
Fecha
2009-10-05
Resumen
In this work, the impact of Sea Surface Temperatures (SSTs) during 1987 and 1988 on the Northern Hemisphere summer mean monsoon is studied using an Atmospheric General Circulation Model. Four model experiments were carried out to assess the relative impacts of observed SST fields of global(El), tropical(E2), tropical Pacific(E3) and tropical central and eastern Pacific(E4) oceans. It was seen that in El, the model captured a number of important observed circulation and precipitation features of 1987 and 1988 monsoons. The upper tropospheric outflow during 1988 was strong over India, Indian ocean and western Australia and the inflow was strong over central and eastern Pacific oceans. During 1987, the upper tropospheric velocity potential minimum over western Pacific shifted east by 20º of its 1988 position. The Tropical Easterly Jet (TEJ) over equatorial Africa was stronger in 1988 than in 1987. The precipitation maximum over western Pacific shifted to central and eastern Pacific during 1987. Over southern India, south west Indian ocean and parts of Sahel, there was increased rainfall during 1988 compared to 1987. However, it was less over northeast India in 1988 than in 1987. In experiments E2, E3 and E4, the large-scale structures of the upper tropospheric velocity potential difference between 1987 and 1988 were similar to those in El. However, some important changes were seen in E3 and E4. The divergent flow during 1988 was weaker over Indian ocean and monsoon region with the center of velocity potential differences shifted to the east in E3 and E4 than in El. Consistent changes were seen in the wind fields also. The TEJ was weaker during both the years 1987 and 1988 in E3 and E4 than in El.
Idioma
eng
ISSN
ISSN electrónico: 2395-8812; ISSN impreso: 0187-6236

Enlaces