UVB solar radiation climatology for Mexico

Valdés-Barrón, Mauro; Bonifaz-Alfonzo, Roberto; Riveros-Rosas, David; Velasco-Herreora, Victor; Estévez-Pérez, Héctor R.; Peláez-Chávez, Juan Carlos

doi:10.1016/s0016-7169(13)71460-0

Cited by 6 publications

(8 citation statements)

References 11 publications

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“…An explanation for this finding could be the increase in pollution, specifically the amount of ozone (O 3 ), nitrogen oxides (NO x ), particles of 10 µm or less in diameter (PM 10 ) and carbon monoxide (CO), which decreases the amount of UVB radiation as a result of direct chemical reactions or by radiation blockage. The spatial distribution of the extreme values of UVB radiation is influenced by the physicochemical interactions it has with covariates such as ozone, nitrogen oxides, particles of 10 µm or less in diameter (PM 10 ), carbon monoxide (CO), relative humidity (RH) and sulfur dioxide (SO 2 ) [6]. The atmospheric concentrations of some of these covariates also present seasonal behaviors which modify the intensities of UVB radiation over time.…”

Section: Resultsmentioning

confidence: 99%

“…The relationships between ultraviolet radiation and air pollutants have been widely used to analyze the spatial distribution of continuous levels of UVB radiation through statistical models [5]. The covariates that have been used by these models to explain the spatial and temporal distribution of UVB radiation are clouds, ozone, nitrogen oxides, particulate matter, carbon monoxide and sulfur dioxide [6]. The clouds have an effect on the distribution of UVB radiation.…”

Section: Introductionmentioning

confidence: 99%

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On the Smoothing of the Generalized Extreme Value Distribution Parameters Using Penalized Maximum Likelihood: A Case Study on UVB Radiation Maxima in the Mexico City Metropolitan Area

Aguirre-Salado

Alvarado

et al. 2020

Mathematics

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This paper concerns the use and implementation of penalized maximum likelihood procedures to fitting smoothing functions of the generalized extreme value distribution parameters to analyze spatial extreme values of ultraviolet B (UVB) radiation across the Mexico City metropolitan area in the period 2000–2018. The model was fitted using a flexible semi-parametric approach and the parameters were estimated by the penalized maximum likelihood (PML) method. In order to investigate the performance of the model as well as the estimation method in the analysis of complex nonlinear trends for UVB radiation maxima, a simulation study was conducted. The results of the simulation study showed that penalized maximum likelihood yields better regularization to the model than the maximum likelihood estimates. We estimated return levels of extreme UVB radiation events through a nonstationary extreme value model using measurements of ozone (O3), nitrogen oxides (NOx), particles of 10 μm or less in diameter (PM10), carbon monoxide (CO), relative humidity (RH) and sulfur dioxide (SO2). The deviance statistics indicated that the nonstationary generalized extreme value (GEV) model adjusted was statistically better compared to the stationary model. The estimated smoothing functions of the location parameter of the GEV distribution on the spatial plane for different periods of time reveal the existence of well-defined trends in the maxima. In the temporal plane, a presence of temporal cyclic components oscillating over a weak linear component with a negative slope is noticed, while in the spatial plane, a weak nonlinear local trend is present on a plane with a positive slope towards the west, covering the entire study area. An explicit spatial estimate of the 25-year return period revealed that the more extreme risk levels are located in the western region of the study area.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the Smoothing of the Generalized Extreme Value Distribution Parameters Using Penalized Maximum Likelihood: A Case Study on UVB Radiation Maxima in the Mexico City Metropolitan Area

Aguirre-Salado

Alvarado

et al. 2020

Mathematics

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“…Matsumoto et al (2014) argue that over 70% of the nation has a Global Horizontal Irradiation value of over 4.5 kWh/m 2 with below 1% of the territory being enough for the generation of solar energy that can power the whole nation (Matsumoto et al , 2014; Valdes-Barrón et al , 2014). The isolation rates of Mexico are quite high, with comparisons showing that they exceed the rates experienced in African and Southwest American deserts (Valdés-Barrón et al , 2013).…”

Section: Introductionmentioning

confidence: 99%

Solar energy analysis in use and implementation in Mexico: a review

Miguel

Andrade

2020

IJESM

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Purpose The purpose of this paper is to analyse how solar energy is harnessed and implemented in Mexico. This paper presents a diachronic analysis of the divergent literature presented into the subject with the themes being divided substantially. Design/methodology/approach This paper used at least five methods in the identification of the studies with the first being the use of the SCImago Institution Ranking followed by the use of Scopus for journal evaluation. SCImago was used to determine the efficiency of the journals with the Newcastle Ottawa scale allowing for the evaluation of the different case study articles presented on Mexico. The fourth tool was a 21-item STROBE checklist after which the Web of Science was used to determine the authenticity levels of the identified articles. Findings The implementation of solar energy technologies is still novel in Mexico with private and public entities working together towards building sustainable options. In addition, it cites the divergent merits that might stem from the use of solar energy technologies. Originality/value A myriad of articles has been presented concerning solar energy in Mexico, but no attempt has been made to synthesize the evidence and arguments made in this significant body of research. The subsequent review is original with its findings being valuable for current and future research.

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“…Sobrevivencia (%) de los conidios de I. fumosorosea ARSEF 3302 ARSEF 3302 (21% ■ 26% ) a diferentes dosis de radiación UVB (3.5, 7, 10 y 14) kJ/m 2 Las barras con diferente letra minúscula, muestran diferencia significativa de un tratamiento con respecto a la dosis; barras con diferente letra mayúscula muestran diferencias significativas entre tratamientos, las barras que no tienen letra mayúscula no mostraron diferencia significativa (prueba de Tukey p< 0.05). En estados del territorio mexicano la radiación UV-B, alcanza una intensidad de 50 mW/m 2 en la parte norte de Chihuahua en enero y en Michoacán la intensidad máxima de radiación alcanza los 400 mW/m 2 en agosto (Valdés-Barrón et al, 2013), con base en estos datos es posible estimar que los conidios cultivados bajo una AE serían capaces de estar expuestos por alrededor de 10 h en el estado de Michoacán o hasta 78 h en el estado de Chihuahua, para recibir una dosis de radiación UV-B de 14 kJ/m 2 y mantener el 80 % de la sobrevivencia. Los conidios obtenidos bajo una AE presentan una elevada resistencia a la radiación UVB y que fueron 1.72 veces más resistentes comparados con los conidios obtenidos con la AN, estos dos factores podrían ser determinantes para la efectividad de los HE aplicados en campo para controlar plagas.…”

Section: Resistencia a Radiación Uv-bunclassified

“…A una dosis de radiación UV-B de 14 kJ/m 2 la sobrevivencia encontrada fue de 53 y 62 % para los conidios cultivados con el tratamiento AN y AE, respectivamente, sin diferencia significativa entre ellas (p> 0.05). Una implicación práctica de esta elevada resistencia natural a la radiación UV-B podría observarse en estados como Durango, Sinaloa o Puebla en los cuales la máxima radiación alcanza es 400 mW/m 2 en agosto (Valdés-Barrón et al, 2013), donde los conidios podrían estar expuestos hasta 10 h o en estados como Baja California o Sonora donde la intensidad de radiación en enero es 50 mW/m 2 , donde los conidios podrían estar expuestos hasta 78 h.…”

Section: Resistencia a Radiación Uv-bunclassified

Producción de conidios de dos cepas de Isaria en dos tipos de atmósfera :relación de la calidad con la respuesta antioxidante

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UVB solar radiation climatology for Mexico

Cited by 6 publications

References 11 publications

On the Smoothing of the Generalized Extreme Value Distribution Parameters Using Penalized Maximum Likelihood: A Case Study on UVB Radiation Maxima in the Mexico City Metropolitan Area

On the Smoothing of the Generalized Extreme Value Distribution Parameters Using Penalized Maximum Likelihood: A Case Study on UVB Radiation Maxima in the Mexico City Metropolitan Area

Solar energy analysis in use and implementation in Mexico: a review

Producción de conidios de dos cepas de Isaria en dos tipos de atmósfera :relación de la calidad con la respuesta antioxidante

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