@InProceedings{SoaresGherPezzKaya:2013:DiLoRe,
author = "Soares, Helena Cachanhuk and Gherardi, Douglas Francisco Marcolino
and Pezzi, Luciano P. and Kayano, Mary Toshie",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {} and {Instituto
Nacional de Pesquisas Espaciais (INPE)}",
title = "Differences between local and remote interannual climate forcings
acting on the Brazilian Large Marine Ecosystems",
booktitle = "Proceedings...",
year = "2013",
organization = "AGU Meeting of the Americas.",
abstract = "arge Marine Ecosystems (LMEs) are units defined based on the
differences in hydrographic regimes, bathymetry, productivity and
trophycally dependent populations and were established for
assessment and management of marine resources and control of
degradation of the coastal areas around the world. Three LME are
located in the Brazilian domain, the North, East and South LMEs.
In this study the influence of interannual climate variations on
Brazilian LMEs are investigated. The South Atlantic is subject to
local climatic modes, such as the Interhemispheric Sea Surface
Temperature (SST) gradient, represented by the Tropical South
Atlantic (TSA) and Tropical North Atlantic (TNA) indices and
Antarctic Oscillation mode, represented by Antarctic Oscillation
(AAO) index. The remote forcings considered in this work are El
Niņo Southern Oscillation (ENSO) and Pacific Decadal Oscillation
(PDO). Total and partial correlation (95% significance) analyses
of climate indices versus SST, wind stress, sea level pressure
(SLP) and outgoing long wave radiation (OLR) were calculated. The
data series used were detrended and filtered to retain the
interannual (2 to 7 years) variability. Correlations were carried
out separately for the cold (1948/1976) and warm PDO phase
(1977/2008). Results point to higher correlations between wind
stress anomaly, SLP anomaly, SST anomaly (SSTA) and the Niņo 3
index for a large part of the South Atlantic during the PDO warm
phase than in the cold phase. The North Brazil LME region is
strongly influenced by El Niņo, with a maximum positive
correlation between SSTA and Niņo 3 found with 7 months lag and a
positive correlation between this index and wind stress with a
maximum time lag of 2 months. The East LME unit appears to be
influenced in a very different way in its southern and northern
portion, suggesting that management actions for the adaptation or
mitigation for possible climate variability changes needs to
consider this difference. The AAO is negatively correlated with
SSTA between 20° and 35°S, being the sole climate index showing
significant correlations in this area. Another aspect observed is
that in the North region of the basin the correlation between AAO
and SSTA seems to be intensified by the TSA interaction. The next
step of this work will be to use the Regional Ocean Modeling
System (ROMS) with a biogeochemical component to evaluate the
impacts of climate variability on the LMEs biological
productivity.",
conference-location = "Cancun",
conference-year = "2013",
label = "lattes: 9331105406437396 4 SoaresGherPezzKaya:2013:DiLoRe",
language = "en",
targetfile = "soares_differences.pdf",
urlaccessdate = "12 maio 2024"
}