@InProceedings{OliveiraEbCaNeSaOl:2006:CoSeLe,
author = "Oliveira, Marilia Mitidieri Fernandes de and Ebecken, Nelson
Francisco Favilla and Caloba, Luiz Pereira and Neves, Claudio
Freitas and Santos, Isimar de Azevedo and Oliveira, Jorge Luiz
Fernandes de",
affiliation = "Instituto Alberto Luiz Coimbra de P{\'o}s-Gradua{\c{c}}{\~a}o e
Pesquisa em Engenharia, Universidade Federal do Rio de
Janeiro(COPPE/UFRJ) and Ilha do Fund{\~a}o, Cidade
Universit{\'a}ria, Centro de Tecnologia-Caixa Postal 68501.
21945-970 Rio de Janeiro, RJ, Brazil (Oliveira and Ebecken and
Caloba and Neves) and Instituto de Geoci{\^e}ncias (IGEO),
Departamento de Meteorologia, Universidade Federal do Rio de
Janeiro (UFRJ), Ilha do Fund{\~a}o, Cidade Universit{\'a}ria
21949-900, Rio de Janeiro, RJ, Brazil (Santos) and Instituto de
Geoci{\^e}ncias, Departamento de Geografia, Universidade Federal
Fluminense (UFF), Praia Vermelha 24210-340, Niter{\'o}i, RJ,
Brazil (Oliveira)",
title = "Coastal sea level response associated with frontal systems using
conventional and NCEP/NCAR Reanalysis data, in Paranagu{\'a} Bay,
Paran{\'a} State, Brazil",
booktitle = "Proceedings...",
year = "2006",
editor = "Vera, Carolina and Nobre, Carlos",
pages = "1883--1895",
organization = "International Conference on Southern Hemisphere Meteorology and
Oceanography, 8. (ICSHMO).",
publisher = "American Meteorological Society (AMS)",
address = "45 Beacon Hill Road, Boston, MA, USA",
keywords = "Coastal sea level response, oceanic and atmospheric interaction,
tide variation in Bays, Reanalysis data.",
abstract = "The main causes of the coastal sea level rising are the
astronomical tides; however the effects of meteorological
variables, also, are present in these variations. Frontal system
associated with intense extra tropical cyclone reach the South
Brazilian Coast in the 30° S and 50° W frequently. The objective
of this work is to show these variations on South Atlantic coastal
sea level in the Paranagu{\'a} Bay Paran{\'a} State - Brazil
using meteorological series of conventional station and NCEP/NCAR
Reanalysis data in the grid points on the interest oceanic area.
It used a low-pass filter to remove the oscillations relative to
the astronomical tide. Studies about the atmospheric driving
forces were made through the statistical analysis in the time and
frequency domain to know the lag time between the meteorological
variables and the coastal sea level response to the occurrences of
the low frequency atmospheric systems. To verify the local and
remote influences in the entrance of the Paranagu{\'a} Bay, it
was used hourly sea level records from the Wharf West in the
Paranagu{\'a} Port and hourly average atmospheric pressure and
wind from the Pontal do Sul station in the Paran{\'a} State in
the 1997 to 1999 period. Atmospheric pressure and wind components
of NCEP/NCAR Reanalysis grid points data in the domain from 25º S
to 27º 30' S and from the shoreline up to 45º W in the period from
1997 to 1998 was used too. The statistical treatment of the series
allowed defining the maximum existing correlations in the physical
process. In such way, we could know the response of the mean sea
level associated with the frontal systems passage. The use of the
NCEP/NCAR Reanalysis data selected on the oceanic area and the
conventional station data near the tide gauge station made
possible the comparison among the respective results. Thus, the
relations between the atmospheric phenomena and the response of
the coastal sea level are more evident with the information
proceeding of the several points. The correlations found using the
meteorological conventional and NCEP/NCAR Reanalysis data show the
local and remote influences in this region. The frequency domain
analysis with the conventional data shows greatest values of
cross-spectral density for events around 5 day periods with
coherence between 90 and 98%. This can be justified due to the
proximity of both stations (tide gauge and meteorological
station), both suffering local influences of the migratory
atmospheric events. An important result that we could verify
through the use by NCEP/NCAR Reanalysis data was how remote events
affect coastal sea level in the entrance of this Bay. It was
verified, mainly, on the southward Paranagu{\'a} Bay grid points,
that the meridional wind component presents high-energy values,
showing the influence of the coast direction in this local.
Additionally, the Reanalysis data showed to be a very good
information source for the South Atlantic Ocean where data gaps
are still substantial, making possible to understand better some
atmospheric events in the Brazilian Coast Region.",
conference-location = "Foz do Igua{\c{c}}u",
conference-year = "24-28 Apr. 2006",
language = "en",
organisation = "American Meteorological Society (AMS)",
ibi = "cptec.inpe.br/adm_conf/2005/10.19.23.18",
url = "http://urlib.net/ibi/cptec.inpe.br/adm_conf/2005/10.19.23.18",
targetfile = "1883-1896.pdf",
type = "Weather analysis and forecasting",
urlaccessdate = "27 abr. 2024"
}