@PhDThesis{Carneiro:2018:ErCaLi,
author = "Carneiro, Rayonil Gomes",
title = "Eros{\~a}o da camada limite noturna e suas
implica{\c{c}}{\~o}es no crescimento da camada limite convectiva
na regi{\~a}o central da Amaz{\^o}nia (experimento GoAmazon
2014/15)",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2018",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2018-03-16",
keywords = "modelo LES. fluxos de superf{\'{\i}}cie. energia cin{\'e}tica
turbulenta, LES model. surface fluxes. turbulent kinetic energy.",
abstract = "A transi{\c{c}}{\~a}o entre as fases est{\'a}vel (camada limite
noturna - CLN) e inst{\'a}vel (camada limite convectiva - CLC) da
camada limite planet{\'a}ria (CLP) possui grande import{\^a}ncia
para estudos de desenvolvimento da convec{\c{c}}{\~a}o diurna,
pois esta fase (denominada eros{\~a}o da CLN) influ{\^e}ncia no
desenvolvimento e crescimento da CLC. Assim, o presente estudo
visou entender a eros{\~a}o da CLN, os fatores que intensificam
sua ocorr{\^e}ncia e foi testada a hip{\'o}tese da eros{\~a}o
da CLN influ{\^e}nciar na forma{\c{c}}{\~a}o e desenvolvimento
da CLC, atrav{\'e}s da combina{\c{c}}{\~a}o de duas abordagens,
com an{\'a}lises por medidas observacionais (radiossonda e
sensores remotos) e por modelagem num{\'e}rica utilizando o
modelo PALM (PArallelized Les Model), para a regi{\~a}o central
da Amaz{\^o}nia. Esta pesquisa ser{\'a} associada {\`a}s
condi{\c{c}}{\~o}es de superf{\'{\i}}cie da regi{\~a}o e as
esta{\c{c}}{\~o}es chuvosas e secas do ano de 2014 (considerado
um ano t{\'{\i}}pico) e do ano de 2015, quando ocorreu um forte
evento El-Niņo. O estudo foi baseado nos dados provenientes do
Projeto GoAmazon 2014/5 (http://campaign.arm.gov/goamazon2014/).
Os resultados mostraram que a eros{\~a}o da CLN {\'e} fortemente
influenciada pelas caracter{\'{\i}}sticas da CLN ao longo da
noite e o fluxo de calor sens{\'{\i}}vel {\`a}
superf{\'{\i}}cie nas primeiras horas da manh{\~a}. Durante as
esta{\c{c}}{\~o}es chuvosa (anos 2014 e 2015) a eros{\~a}o
completa da CLN ocorreu em torno de 3 horas ap{\'o}s o nascer do
sol. Nas esta{\c{c}}{\~o}es secas, quando foi observada uma CLN
fortemente est{\'a}vel, os fluxos turbulentos mais intensos
permitiram que a CLN fosse erodida em apenas 2 horas. A
eros{\~a}o da CLN influenciou, de forma direta, o desenvolvimento
da CLC posterior, sendo que a eros{\~a}o mais r{\'a}pida
permitiu que a CLC tivesse um maior desenvolvimento vertical. O
modelo PALM mostrou efici{\^e}ncia para simular a fase de
transi{\c{c}}{\~a}o da CLN para CLC: durante ambas
esta{\c{c}}{\~o}es chuvosas a simula{\c{c}}{\~a}o apresentou
uma pequena superestimava da altura ( 40 m) na fase final da CLN
que antecedeu a eros{\~a}o, e uma subestimativa ( 20 m), no
in{\'{\i}}cio da eros{\~a}o nas esta{\c{c}}{\~o}es secas. A
energia cin{\'e}tica turbulenta (ECT) apresentou
caracter{\'{\i}}sticas semelhantes em todos os casos simulados
distinguindo-se na intensidade, produzindo um maior transporte
durante no hor{\'a}rio em que a CLN j{\'a} havia sido
destru{\'{\i}}da e uma maior produ{\c{c}}{\~a}o de energia nos
per{\'{\i}}odos secos. ABSTRACT: The phase of transition between
the stable phase (Nocturnal Boundary Layer - NBL) and unstable
(Convective Boundary Layer - CBL) layer of the planetary boundary
layer (CLP) is of great importance for studies of the development
of daytime convection, since this phase (called CLN erosion)
influences in CBL development and increase. Thus, the present
study aims to understand the Nocturnal Boundary Layer Erosion, the
factors that intensify its occurrence and was tested the
hypothesis of NBL erosion influence in the formation and
development of CBL, through of the combination boarding with
analyzes by observational measurement (radiosonde and remote
sensors) and numerical modeling through of the PALM model
(PArallelized Les Model), for the central Amazon region. This
research will be associated a to the surface conditions of the
region and wet and dry seasons of the year 2014 (considered
tipical) and of the year 2015, when occurred the strong El-NiŅo
event. The study was based on proceeding data from GoAmazon
Project 2014/2015 (http://campaign.arm.gov/goamazon2014/). The
result indicated that the NBL erosion is strongly influenced by
NBL characteristics all night long and the sensible heat flux in
the first hours of the morning. While the wet seasons (2014 and
2015) the complete NBL erosion was approximate 3 hours after
sunrise. In the dry seasons, when a strongly stable NBL was
observed, the most intensive flux permitted that NBL erosion were
2 hours after sunrise. The NBL erosion influenced directly the
form the subsequent CBL development, being that a faster erosion
allowed the CBL to have a greater vertical development. The PALM
model showed efficiency for simulating the transition phase of the
NBL to:during the wet seasons the simulation showed a small
overestimate ( 40 m) in the final NBL phase that anteceded the
erosion, and one small underestimate ( 20 m) at the begging of the
erosion in the dry seasons. The Turbulent Kinect Energy (TKE)
showed similar characteristics in all simulation, distinguishing
the intensity, produce more transporting during the hours that the
NBL had already been destructed, with more energy production in
the dry seasons.",
committee = "Reyes Fernandez, Julio Pablo (presidente) and Fisch, Gilberto
Fernando (orientador) and Manzi, Antonio Ocimar and Lyra, Roberto
Fernando da Fonseca and Silva, Julio Tot{\'a} da",
englishtitle = "Nocturnal boundary layer erosion and its implications on the
growth of the convective boundary layer in the Amazon region
(GoAmazon 2014/5 experiment)",
language = "pt",
pages = "185",
ibi = "8JMKD3MGP3W34P/3QD57NE",
url = "http://urlib.net/ibi/8JMKD3MGP3W34P/3QD57NE",
targetfile = "publicacao.pdf",
urlaccessdate = "27 abr. 2024"
}