@InProceedings{GrodskyCaPrSeLoMc:2004:AnATAD,
author = "Grodsky, S. and Carton, J. and Provost, C. and Servain, J. and
Lorenzzetti, J. A. and McPhaden, M.",
affiliation = "Instituto Nacional de Pesquisas Espaciais, Divis{\~a}o de
Gera{\c{c}}{\~a}o de Imagens (INPE, DGI) and Instituto Nacional
de Pesquisas Espaciais, Coordena{\c{c}}{\~a}o do Programa
Amaz{\^o}nia (INPE, AMZ) and Instituto Nacional de Pesquisas
Espaciais, Divis{\~a}o de Sensoriamento Remoto (INPE, DSR) and
Instituto Nacional de Pesquisas Espaciais, Divis{\~a}o de
Processamento de Imagens (INPE, DPI)",
title = "Tropical instability waves and the warming of the Atlantic cold
tongue: Analysis of the ATLAS and ADCP PIRATA mooring data from 0
N, 23 W",
booktitle = "Proceedings...",
year = "2004",
organization = "Spring AGU Meeting.",
abstract = "Temperature, salinity, and recent velocity records from the PIRATA
moorings at 0oN, 23oW collected during 2002, as well as
accompanying satellite SST and winds are used to examine the
Tropical Instability Waves (TIW) and their role in the mixed layer
heat balance of the central equatorial Atlantic. The TIW appear as
periodic 20-30 day fluctuations in currents which intensify
beginning in June in phase with the strengthening of the
southeasterly trade winds and the seasonal appearance of the
equatorial cold tongue. Zonal velocity fluctuations are largest in
July-August, while meridional velocity fluctuations are largest in
August-September. The meridional component of velocity is also
distinguished from the zonal component in that fluctuations of the
meridional component extend coherently in the vertical to at least
120 m while zonal fluctuations are coherent within the mixed layer
only. Our estimate of horizontal eddy heat advection in the mixed
layer averaged June-September is ~ 100 W m-2 with meridional
advection dominating and peaking in late boreal summer. Averaged
over the whole summer the contribution of the TIW events to the
warming of the mixed layer is of 0.5oC, which corresponds to a
modest value of the eddy heat advection of 15 W m-2. Since this
value is very much less than the estimates of the summer mean eddy
horizontal heat advection of 50 - 100 W m-2 this indicates that
horizontal and vertical eddy heat advection balance in part..",
conference-location = "Montreal.",
conference-year = "2004",
label = "self-archiving-INPE-MCTIC-GOV-BR",
language = "en",
targetfile = "grodsky_tropical.pdf",
urlaccessdate = "10 maio 2024"
}