Seasonal variability of the surface dynamic topography in the tropical Atlantic Ocean

Autor:	Jacques Merle, Sabine Arnault
Rok vydání:	1985
Předmět:	CIRCULATION OCEANIQUE SALINITE Ocean surface topography VARIATION SAISONNIERE TOPOGRAPHIE DYNAMIQUE Climatology THERMOCLINE Tropical Atlantic DISTRIBUTION SPATIALE Oceanography TEMPERATURE Geology
Zdroj:	Journal of Marine Research. 43:267-288
ISSN:	1543-9542 0022-2402
DOI:	10.1357/002224085788438667
Popis:	The seasonal changes of the surface dynamic topography are studied using a merged data set including MBT, XBT and Nansen observations, collected in the 20S - 30N Tropical Atlantic until 1978. Two regions of maximum seasonal variability appear. Ones lies north of the equator extending zonally approximately under the mean position of the Inter-Tropical Convergence Zone (ITCZ). The second one is found in the Eastern Equatorial region (Gulf of Guinea). The two regions vary out of phase and are separated by a pivot point around 25W in the Equatorial plane. Another near 180° phase change is observed at the Northern edge of the region of maximum seasonal variability North of the Equator. These amplitude and phase changes in the surface dynamic topography are related to a double seasonal tilt of the thermocline recently simulated by several two-layer and multilayer models. (D'après résumé d'auteur)
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ad312ad6122761b3b0a1c0ac96e0354 https://doi.org/10.1357/002224085788438667 Zobrazit plný text záznamu