@Article{VeigaGiarNobrNobr:2020:AnInNo,
author = "Veiga, Sandro Miguel Ferreira and Giarolla, Emanuel and Nobre,
Paulo and Nobre, Carlos Afonso",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Universidade de S{\~a}o Paulo
(USP)}",
title = "Analyzing the influence of the North Atlantic Ocean variability on
the Atlantic meridional mode on decadal time scales",
journal = "Atmosphere",
year = "2020",
volume = "11",
number = "1",
pages = "e3",
month = "Jan.",
keywords = "Atlantic Meridional Mode, Atlantic Ocean variability,
ocean-atmosphere interaction, decadal variability.",
abstract = ": Important features of the Atlantic meridional mode (AMM) are not
fully understood. We still do not know what determines its
dominant decadal variability or the complex physical processes
that sustain it. Using reanalysis datasets, we investigated the
influence of the North Atlantic Ocean variability on the dominant
decadal periodicity that characterizes the AMM. Statistical
analyses demonstrated that the correlation between the sea surface
temperature decadal variability in the Atlantic Ocean and the AMM
time series characterizes the Atlantic multidecadal oscillation
(AMO). This corroborates previous studies that demonstrated that
the AMO precedes the AMM. A causal inference with a newly
developed rigorous and quantitative causality analysis indicates
that the AMO causes the AMM. To further understand the influence
of the subsurface ocean on the AMM, the relationship between the
ocean heat content (0300 m) decadal variability and AMM was
analyzed. The results show that although there is a significant
zero-lag correlation between the ocean heat content in some
regions of the North Atlantic (south of Greenland and in the
eastern part of the North Atlantic) and the AMM, their
cause-effect relationship on decadal time scales is unlikely. By
correlating the AMO with the ocean heat content (0300 m) decadal
variability, the former precedes the latter; however, the
causality analysis shows that the ocean heat content variability
drives the AMO, corroborating several studies that point out the
dominant role of the ocean heat transport convergence on AMO.",
doi = "10.3390/ATMOS11010003",
url = "http://dx.doi.org/10.3390/ATMOS11010003",
issn = "2073-4433",
language = "en",
targetfile = "veiga_analyzing.pdf",
urlaccessdate = "28 abr. 2024"
}