Metodologia para validação de dados coletados por espectrofotômetros Brewer (Data validation methodology for Brewer Spectrophotometer operating)
DOI:
https://doi.org/10.26848/rbgf.v11.2.p601-611Keywords:
Radiação Ultravioleta, Espectrofotômetro Brewer, Tropospherical Ultraviolet Visible ModelAbstract
O Instituto Nacional de Pesquisas Espaciais (INPE) monitora fluxos da Radiação Ultravioleta (R-UV), em solo, desde 1990, através de uma rede de espectrofotômetros Brewer no Brasil, Bolívia, Chile e Antártida. O espectrofotômetro é reconhecido pela Organização Mundial de Meteorologia (OMM) e pelo programa “Global Atmosphere Watch” (GAW) como padrão para medições de ozônio e R-UV. O objetivo deste trabalho é descrever e avaliar o funcionamento do instrumento no processo de coleta da R-UV, ao mesmo tempo em que apresenta metodologia desenvolvida para validação de dados referentes ao período de 1997 a 2012 nas cidades de La Paz, Bolívia e Natal, Brasil. Avaliou-se o funcionamento da parte óptica com destaque nas Lâmpadas Padrão (SL) dos espectrofotômetros. Observaram-se desgastes naturais no funcionamento dos instrumentos. Utilizou-se o modelo matemático de transferência radiativa TUV “Tropospherical Ultraviolet Visible Model” para simular uma base de dados do índice de radiação ultravioleta (IUV). Por meio de análise de regressão linear entre as duas bases, realizou-se o ajuste da série temporal do Brewer (variável preditora) por meio da série temporal do TUV (variável resposta). Este review apresenta algoritmo para validação dos registros e um roteiro para a pré-análise dos dados coletados.
A B S T R A C T
The National Institute for Space Research monitors the fluxes of Ultraviolet Radiation (R-UV) on ground, since 1990, through a network of Brewer Spectrophotometers in Brazil, Bolivia, Chile and Antarctica. The spectrophotometer is recognized by the World Meteorological Organization (WMO) and the program Global Atmosphere Watch (GAW) as the standard for ozone and R-UV measurements. The objective of this work is to describe and evaluate the operation of the Brewer in the process of collecting R-UV, at the same time that it presents methodology developed for data validation for the period from 1997 to 2012 in the cities of La Paz, Bolivia and Natal, Brazil. Evaluation the operation of the optical part with highlight in the Standard Lamps (SL) of Spectrophotometers. Natural wear in the operation of the instruments were observed. The mathematical model of radiative transference of the Tropospherical Ultraviolet Visible Model (TUV) to simulate an IUV database. By means of linear regression analysis between the two bases, the time series of the Brewer (predictor variable) was adjusted by means of the TUV time series (response variable). This review presents an algorithm for validation of its records and a routine for the pre-analysis of the collected data.
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References
Bais, A. F., 1997. Absolute spectral measurements of direct solar ultraviolet irradiance with Brewer spectrophotometer. Applied Optics 36, 5199-5204.
Brewer, A.W., 1973. A replacement for the dobson spectrophotometer?. Pure and Applied Geophysics 106-108, 919-927.
Carvalho, F., Henriques, D. 2000. Use of brewer ozone spectrophotometer for aerosol optical depth measurements on ultraviolet region. Advances in Space Research 25, 1006-2000.
Corrêa, M. P., 2003. Índice Ultravioleta: Avaliações e Aplicações. Tese (Doutorado). São Paulo, USP.
Corrêa, M. P., 2015. Solar ultraviolet radiation: properties, characteristics and amounts observed in Brazil and South America. Anais Brasileiro de Dermatología 90, 297-313.
Fioletov, V., Kerr, J. B., Wardle, D. I., 1997. The relationship between total ozone and spectral UV irradiance from Brewer observations and its use for derivation of total ozone from UV measurements. Geophys. Res. Lett 24, 2997-3000.
Fioletov, V., Griffioen, E., Kerr, J. B., Wardle, D. I., 1998. Influence of volcanic sulfur dioxide on spectral uv irradiance as measured by brewer spectrophotometers. Advances in Space Research 25, 1665-1668.
Kirchhoff, V., 2000. A Variação Sazonal da Radiação Ultravioleta Solar Biologicamente Ativa. Revista Brasileira de Geofísica 18, 63-74.
Madronich, S., 1992 Implications of recent total atmospheric ozone measurements for
biologically active ultraviolet radiation reaching the earth’s surface. Geophysical Research Letters 19, 37-40.
Mckenzie, R.L., Björn, L.O., Bais, A., Ilyasad, M., 2003. Changes in biologically active ultraviolet radiation reaching the Earth’s surface. Photochem Photobiol Sci 2, 5-15.
Okuno, E., Nakajima, T., Yoshimura, E. M., Hiodo, F., Fausto, A. M. F., Paes, W. S., Umisedo, M. K., Otsubo, S., 1996. Radiação ultravioleta solar em São Paulo, Chiba, Calafate e Ilha de Páscoa. Revista Brasileira de Engenharia 12, 143-153.
Rivas, M. A., Rojas, E. E., Cortés, N. J., Santander, G. E., 2002. Efecto de la altura en la radiación solar ultravioleta en Arica norte de Chile. Revista Facultad de Ingeniería 10, 59-62.
Rodriguez, J.C, 2011. Análise dos efeitos da radiação solar ultravioleta (R-UV) em populações habitantes a diferentes altitudes. Dissertação de Mestrado, Universidade Federal de Itajubá, Minas Gerais, 2011.
SCI-TEC. Spectrophotometer Instruments Inc. Brewer MKIV. 1999. OM-BA-C231 REV B, August 15. Operator’s Manual. Saskatoon, Sask., Canada.
SCI-TEC. Spectrophotometer Instruments Inc. Brewer MKIV. 1995. OM-BA-C231 REV B. Operator’s Manual. Saskatoon, Sask., Canada.
Silva, A.A., 2002. A Espessura Óptica de Aerossóis na banda do UV-B. Tese (Doutorado). São José dos Campos, INPE.
Stamnes, K., Tsay, S.C., Wiscombe, W., Jayaweera, K., 1988. Numerically stable algorithm for discrete-ordinate-method radiative transfer a multiple scattering and emitting media. Applied Optics 27, 2502-2509.
OMS. Organización Mundial de la Salud, 2003. Índice UV Solar Mundial. Guia Práctica. Genebra.
Zamorano, F. C., 2003. Determinação do Espectro UV-B utilizando o Radiômetro GUV: Aplicação a medidas realizadas em Punta Arenas. Tese (Doutorado). São José dos Campos, INPE.
Zaratti, F., Gisbert, R. F., 2003. La Radiación Ultravioleta en Bolivia. Organización Panamericana de la Salud, La Paz.
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Copyright (c) 2018 Jaime Rodriguez Coariti, José Henrique Fernandez, Maria Helena Constantino Spyrides, Marcelo de Paula Corrêa, Neusa Paes Leme, George Ulguim Pedra, Francisco Raimundo da Silva
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