Analysis of the vertical wind profile at the Alcântara Launch Center using Principal Components Analysis

Authors

DOI:

https://doi.org/10.5902/2179460X33041

Keywords:

Maritime breeze, Low level jets, Principal component analysis

Abstract

The objective of this study is to perform a vertical wind profile analysis using radiosonde data at the Alcântara Launch Center (ALC), using the multivariate statistical technique of the Principal Components Analysis (PCA), to verify if there is a presence of flows in the vertical wind profile. These flows may characterize local circulations and be associated with sea breeze-type circulations, and may also be associated with synoptic mesoscale level circulations, such as Low-Level Jets (LLJ). The results showed that in the first three components in the nocturnal period there is a presence of LLJ, with 85% of the variance explained. The occurrence of LLJ presented typical heights in the components, the first one with a height of 800 meters (average direction 60 to 70 degrees), the second with a height of 400 meters (mean direction 40 to 50 degrees) and the third with 200 meters average 50 to 60 degrees). These LLJs may be associated with processes related to the Planetary Boundary Layer (PBL) at night, such as maximum wind inversion and breezes.

Downloads

Download data is not yet available.

Author Biographies

Paola do Nascimento Silva, Universidade Federal de Itajubá, Itajubá, MG

Graduanda em Ciências Atmosféricas na Universidade Federal de Itajubá.

Cleber Souza Corrêa, Instituto de Aeronáutica e Espaço - IAE, São José dos Campos, SP

Pesquisador do Instituto de Controle do Espaço Aéreo (ICEA) e do Instituto de Aeronáutica e Espaço (IAE)

References

BONNER, W. D.; ESBENSEN, S.; GREENBERG, R. Kinematics of the low-level jet. Journal of Applied Meteorology, v. 7, n. 3, p. 339-347, 1968.

CORRÊA, C. S.; CLARKE, R. T.; SILVEIRA, A. L. L. Estudo da ocorrência de Fluxos no perfil vertical do vento na baixa Atmosfera com Análise das Componentes Principais (ACP) e a sua relação com a precipitação no Rio Grande do Sul. Revista Brasileira de Meteorologia, v.22, n.1, 121-127, 2007.

CORRÊA, C. S.; DALLAROSA, R. L. G.; DEGRAZIA, G. A. Estudo Observacional dos Jatos de Nível Baixo Sobre a Região Metropolitana de Porto Alegre. Revista Brasileira de Recursos Hídricos, Volume 6 n.4, 19-27, 2001.

DOUBLER, D. L. et al. An NARR-Derived Climatology of Southerly and Northerly Low-Level Jets over North America and Coastal Environs. Journal of Applied Meteorology and Climatology, v. 54, n. 7, p. 1596-1619, 2015.

FERREIRA, S. H. S.; CALBETE, N. O. Estudo de caso de jatos de baixos níveis na América do sul ocorridos em 1999. In: 12 CONGRESSO BRASILEIRO DE METEOROLOGIA. Foz do Iguaçú: SBMET, 2002.

GISLER, C. A. F.; FISCH, G.; CORRÊA, C. S. Statistical analysis of wind profile in the surface layer at the Alcântara launching center. Journal of Aerospace Technology and Management, v. 3, n. 2, p. 193-202, 2011.

LIU, S.; LIANG, X. Observed diurnal cycle climatology of planetary boundary layer height. Journal of Climate, v. 23, n. 21, p. 5790-5809, 2010.

MARENGO, J. A.; SOARES, W. R. Episódios de Jatos de Baixos Níveis ao Leste dos Andes durante 13-19 de abril de 1999. Revista Brasileira de Meteorologia, v. 17, n. 1, p. 35-52, 2002.

NETO, J. M. M.; MOITA, G. C. Uma introdução à análise exploratória de dados multivariados. Química nova, v. 21, n. 4, p. 467-469, 1998.

PEREIRA, E. I. et al. Atlas Climatológico do Centro de Lançamento de Alcântara-MA. São José dos Campos: CTA/IAE-Divisão de Ciências Atmosféricas, 2002.

PU, B.; DICKINSON, R. E. Diurnal spatial variability of Great Plains summer precipitation related to the dynamics of the low-level jet. Journal of the Atmospheric Sciences, v. 71, n. 5, p. 1807-1817, 2014.

ROBALLO, S. T.; FISCH, G. Escoamento atmosférico no Centro de Lançamento de Alcântara (CLA): parte I-aspectos observacionais. Revista Brasileira de Meteorologia, v. 23, n. 4, p. 510-519, 2008.

SOUZA, D. C.; OYAMA, M. D. Breeze Potential Along the Brazilian Northern and Northeastern Coast. Journal of Aerospace Technology and Management, v. 9, n. 3, p. 368-378, 2017.

STENSRUD, D. J. Importance of low-level jets to climate: A review. Journal of Climate, v. 9, n. 8, p. 1698-1711, 1996.

WHITEMAN, C. D.; BIAN, X.; ZHONG, S. Low-level jet climatology from enhanced rawinsonde observations at a site in the southern Great Plains. Journal of Applied Meteorology, v. 36, n. 10, p. 1363-1376, 1997.

Downloads

Published

2019-07-16

How to Cite

Silva, P. do N., & Corrêa, C. S. (2019). Analysis of the vertical wind profile at the Alcântara Launch Center using Principal Components Analysis. Ciência E Natura, 41, e11. https://doi.org/10.5902/2179460X33041

Issue

CIÊNCIA E NATURA, V. 41, 2019

Section

Meteorology

License

Copyright (c) 2019 Ciência e Natura

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

To access the DECLARATION AND TRANSFER OF COPYRIGHT AUTHOR’S DECLARATION AND COPYRIGHT LICENSE click here.

 

Ethical Guidelines for Journal Publication

The Ciência e Natura journal is committed to ensuring ethics in publication and quality of articles. 

Conformance to standards of ethical behavior is therefore expected of all parties involved: Authors, Editors, Reviewers, and the Publisher.

In particular, 

Authors: Authors should present an objective discussion of the significance of research work as well as sufficient detail and references to permit others to replicate the experiments. Fraudulent or knowingly inaccurate statements constitute unethical behavior and are unacceptable. Review Articles should also be objective, comprehensive, and accurate accounts of the state of the art. The Authors should ensure that their work is entirely original works, and if the work and/or words of others have been used, this has been appropriately acknowledged. Plagiarism in all its forms constitutes unethical publishing behavior and is unacceptable. Submitting the same manuscript to more than one journal concurrently constitutes unethical publishing behavior and is unacceptable. Authors should not submit articles describing essentially the same research to more than one journal. The corresponding Author should ensure that there is a full consensus of all Co-authors in approving the final version of the paper and its submission for publication.

Editors: Editors should evaluate manuscripts exclusively on the basis of their academic merit. An Editor must not use unpublished information in the editor's own research without the express written consent of the Author. Editors should take reasonable responsive measures when ethical complaints have been presented concerning a submitted manuscript or published paper.

Reviewers: Any manuscripts received for review must be treated as confidential documents. Privileged information or ideas obtained through peer review must be kept confidential and not used for personal advantage. Reviewers should be conducted objectively, and observations should be formulated clearly with supporting arguments, so that Authors can use them for improving the paper. Any selected Reviewer who feels unqualified to review the research reported in a manuscript or knows that its prompt review will be impossible should notify the Editor and excuse himself from the review process. Reviewers should not consider manuscripts in which they have conflicts of interest resulting from competitive, collaborative, or other relationships or connections with any of the authors, companies, or institutions connected to the papers.