Correlação entre Medições do Satélite MSG nos Canais 5 e 6 e o Teor de Umidade do Ar Obtido pelo Modelo BRAMS (Correlation Between Channels 5 and 6 data from Measurements from MSG Satellite and BRAMS Model Simulated Atmospheric Moisture Content)
DOI:
https://doi.org/10.26848/rbgf.v8.1.p001-012Keywords:
BRAMS, Correlações, Imagens, MSGAbstract
Neste trabalho foi feito uma associação do sensoriamento remoto com a modelagem numérica da atmosfera no propósito de identificar correlações entre imagens do MSG, através dos canais 5 e 6 com a água precipitável, umidade relativa do ar e a diferença entre a temperatura do ar e a temperatura do ponto de orvalho obtidas através do BRAMS. Duas imagens foram estabelecidas para o estudo: 1) Dia 29/09/2012, 12:00 UTC e cortes em 21º S e 27º S; e 2) dia 30/09/2012, 00:00 UTC e cortes em 18º S e 24º S. O modelo BRAMS foi inicializado com dados de re-análises do NCEP/NCAR com saídas a cada 6 horas na mesma resolução espacial e temporal das imagens do MSG (4 km, cada 6 horas). Imagens MSG dos canais 5 e 6 juntamente com o modelo BRAMS se mostraram eficazes no estudo da umidade atmosférica.
ABSTRACT
This work had the objective of identifying the relationship between MSG satellite data from channels 5 and 6 with precipitable water, relative humidity and the difference between the air temperature and dew point temperature outputs from BRAMS model, in a tentative of associating atmospheric remote sensing and numerical modeling. For this, two base-images were obtained: 1) 29-09-2012, 12:00 UTC ranging between 21°S and 27ºS; and 2) 30-09-2012, 00:00 UTC, ranging between 18°S and 24°S. The model was feeded with NCEP/NCAR Reanalysis data, using the same spatial resolution as the satellite data (4 km in a 6-hour time-step). A 95-99% statistical significance level was obtained throughout the obtained correlations. The MSG satellite data from channels 5 and 6 alongside the BRAMS simulations have proven to be an effective technique in the study of atmospheric humidity.
Keywords: BRAMS, Correlations, Images, MSG.
Downloads
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2015 Everson Batista Mariano, Enilson Palmeira Cavalcanti
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with Revista Brasileira de Geografia Física agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) license that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted to make their work available online before or during the editorial process, on academic social networks, digital repositories, or preprint servers. After publication in Revista Brasileira de Geografia Física, authors are expected to update the preprint or postprint versions on the platforms where they were originally made available, providing a link to the final published version and any other relevant information, with proper recognition of authorship and the initial publication in this journal.
You are free to:
Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
Adapt — remix, transform, and build upon the material for any purpose, even commercially.
The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
