On the initiation of the walker circulation during 1982/1983 enso event Iniciação da circulação de walker durante o evento de enos de 1982/1983
The GEOS-1 data from multiyear reanalysis are using. An altered Walker Circulation is initiated by the rising motion created over the warm ocean surface on the eastern Pacific. This occurred during the major El Niño event of 1982-1983. To compensate the rising motion, a sinking motion is generated o...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Meteorologia
2009-03-01
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| Series: | Revista Brasileira de Meteorologia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-77862009000100007 |
| Summary: | The GEOS-1 data from multiyear reanalysis are using. An altered Walker Circulation is initiated by the rising motion created over the warm ocean surface on the eastern Pacific. This occurred during the major El Niño event of 1982-1983. To compensate the rising motion, a sinking motion is generated over western Pacific completing the formation of the altered Walker Circulation. Thus, the initiation of the altered Walker Circulation is by the sea surface gradient as originally envisioned by Bjerknes.<br>Utilizando-se dados de reanálises do GEOS-1, observa-se que durante o El Niño de 1982-1983 a circulação de Walker anômala iniciou-se devido ao movimento ascendente gerado pelas águas superficiais quentes no Pacífico leste. Para compensar o movimento ascendente, subsidência de ar é gerada sobre o Pacífico oeste de forma a completar a circulação de Walker anômala. Assim, o início da circulação de Walker anômala ocorreu devido ao gradiente superficial sobre o mar tal como sugerido por Bjerknes. |
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| ISSN: | 0102-7786 1982-4351 |