@InProceedings{RossatoSouz:2018:MeDiPa,
author = "Rossato, Fernando and Souza, Ronald Buss de",
affiliation = "{} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "Medidas diretas e parametriza{\c{c}}{\~o}es bulk dos fluxos de
calor entre o oceano e a atmosfera no atl{\^a}ntico equatorial",
booktitle = "Anais...",
year = "2018",
organization = "Congresso Brasileiro de Meteorologia (CBMET)",
keywords = "Fluxos de calor entre o oceano e a atmosfera, Oceano
Atl{\^a}ntico Equatorial, Projeto PIRATA, Ocean-atmosphere heat
fluxes, Equatorial Atlantic Ocean, PIRATA Project.",
abstract = "Utilizando uma torre micrometeorol{\'o}gica, medidas diretas de
fluxos de calor sens{\'{\i}}vel (H) e latente (Le) foram feitas
a bordo do Navio de Pesquisa Hidroceanogr{\'a}fico Vital de
Oliveira, no per{\'{\i}}odo entre 14 de novembro e 6 de dezembro
de 2017, em sua derrota ao longo do meridiano 38oW durante o
cruzeiro XVII do projeto PIRATA Brasil (Prediction and Research
Moored Array in the Tropical Atlantic). Usando dados
meteorol{\'o}gicos e oceanogr{\'a}ficos, os fluxos de calor
tamb{\'e}m foram estimados a partir de
parametriza{\c{c}}{\~o}es bulk. Este estudo descreve pela
primeira vez as medidas diretas e as estimativas durante o
per{\'{\i}}odo desse estudo, assim como as diferen{\c{c}}as
entre H e Le obtidos atrav{\'e}s do m{\'e}todo Covari{\^a}ncia
dos V{\'o}rtices (CV) e pelas parametriza{\c{c}}{\~o}es bulk.
As s{\'e}ries de tempo de fluxos de calor via CV e bulk
apresentaram uma variabilidade bastante semelhante, especialmente
para a magnitude de Le. O m{\'e}todo bulk em geral subestimou H
em rela{\c{c}}{\~a}o ao m{\'e}todo CV. O H m{\'e}dio foi 12
W/mē com o m{\'e}todo CV e 5 W/mē com o bulk, e houve uma
depend{\^e}ncia das s{\'e}ries com a diferen{\c{c}}a entre a
TSM e a temperatura do ar. J{\'a} para Le, as magnitudes
apresentadas pelos m{\'e}todos diferiram, com o m{\'e}todo bulk,
na m{\'e}dia da s{\'e}rie temporal, superestimando
substancialmente Le em rela{\c{c}}{\~a}o {\`a} CV (117 W/mē
para bulk e 48 W/mē para CV). Para o ambos os fluxos, mas
especialmente para Le, as maiores diferen{\c{c}}as entre os dois
m{\'e}todos ocorreram sob condi{\c{c}}{\~o}es de ventos fortes.
ABSTRACT: Using a micrometeorololical tower, direct measurements
of sensible (H) and latent (Le) heat fluxes were performed onboard
the Brazilian Navy Research Ship Vital de Oliveira, during the
period between 14 November and 6 December 2017, along her route on
the 38 oW meridian during the 17th cruise of the PIRATA Brazil
(Prediction and Research Moored Array in the Tropical Atlantic)
project. Using conventional meteorological and oceanographic data,
the heat fluxes were also estimated from bulk parameterizations.
The present study describes for the first time the direct
measurements and the estimates, as well as the differences between
H and Le taken from the Eddy Covariance method (EC) and by the
bulk parameterizations. Both the EC and bulk time series presented
a very similar variability, especially for the Le magnitude. The
bulk method, in general, sub estimated H in respect to the EC
method. The mean sensible heat flux was 12 W/mē for the EC method
whereas it was 5 W/mē for bulk, and there were a dependency of the
series with the difference between the sea surface temperature and
the air temperature. For Le, the magnitudes presented by both
methods differed, with the bulk method, in the temporal mean of
the time series, super estimating substantially Le in respect to
the EC (117 W/mē for the bulk estimate and 48 W/mē for EC). For
both heat fluxes but especially for Le, the major differences
between the tow methods occurred on strong wind conditions.",
conference-location = "Macei{\'o}, AL",
conference-year = "27-30 nov.",
targetfile = "Rossato e Souza_CBMET_2018.pdf",
urlaccessdate = "21 maio 2024"
}