Ground-based observation of solar UV radiation in Japan, Brazil and Chile

Nozawa, Hiromasa; Yamamoto, Hiromasa; Makita, Kazuo; Schuch, Nelson Jorge; Pinheiro, Damaris Kirsch; Carbone, Samara; MacMahon, R. Monreal; Foppiano, A. J.

doi:10.1590/s0102-261x2007000600003

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…The intensities of UVB (280-320 nm) received by the Petri dishes on the shelves were 0.19 (UVA+UVB: 0.27), 0.31 (0.45), 0.58 (1.0), and 1.55 (2.8) W m −2 , respectively (X1 1 Optomerter; Gigahertz-Optik Inc., Newburyport, MA). The highest solar UVB irradiances at ground level in Japanese main islands over seasons are around 2 W m −2 (Nozawa et al, 2007(Nozawa et al, , 2010. The UVB irradiances used in this study was thus within the ambient solar UVB radiation in Japan.…”

Section: Uvb Irradiationmentioning

confidence: 80%

The Bunsen–Roscoe reciprocity law in ultraviolet-B-induced mortality of the two-spotted spider mite Tetranychus urticae

Murata

Osakabe

2013

Journal of Insect Physiology

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To determine whether the Bunsen-Roscoe reciprocity law (i.e., the extent of photochemical effects is determined by cumulative irradiance) is applicable to ultraviolet-B (UVB) damage in the twospotted spider mite Tetranychus urticae, egg hatchability and survival of individuals were assessed after irradiation with a UVB lamp using various combinations of intensity and time length. A positive linear correlation between probit mortality and cumulative UVB irradiance was detected in eggs, larvae, teleiochrysalis females, and adult females, regardless of UVB intensity (0.19-0.58 Wm(-2)). LD50 values were clearly higher in adult females, followed by teleiochrysalis females, larvae, and eggs. In eggs, reciprocity was obeyed not only at the UVB intensities listed above, but also at very low UVB intensity (0.014-0.023 Wm(-2)). Such reciprocity in the negative effects of UVB radiation was also observed for the developmental rate of juveniles and egg production of adult females. However, the LD50 value of eggs obtained using the UVB lamp (0.58 kJm(-2)) was lower than that elicited by solar UVB radiation in a previous outdoor experiment (about 50 kJm(-2)). These results suggest that a photoreactivation mechanism plays an important role in the survival of this mite under solar radiation.

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Section: Uvb Irradiationmentioning

confidence: 80%

The Bunsen–Roscoe reciprocity law in ultraviolet-B-induced mortality of the two-spotted spider mite Tetranychus urticae

Murata

Osakabe

2013

Journal of Insect Physiology

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“…There was almost no difference between the control and −UV treatment plants (Table 1) at noon in summer (Nozawa et al, 2007), and we measured approximately 300 mW·m −2 at the plant level inside the plastic house in the afternoon at the beginning of the treatment in period I (data not shown). It seemed interesting that an additional 50 mW·m −2 UV-B irradiation in the nighttime caused obvious damage to perilla plants, although intense ambient UV-B radiation in the daytime did not.…”

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confidence: 87%

Difference between Nighttime and Daytime UV-B Irradiation with Respect to the Extent of Damage to Perilla Leaves

et al. 2017

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Although ultraviolet-B (UV-B) light (280-315 nm) irradiation effectively controls spider mites in horticultural crop production, it also causes plant damage, leading to growth suppression, changes in morphology, and leaf scorching. However, sensitivity to UV-B varies among plant species. Here, we assessed the effect of UV-B on growing perilla (Perilla frutescens var. crispa) plants. Three experiments were conducted. In the first experiment, plants of the variety 'Akachirimenshiso' were grown in a plastic house with natural light conditions and subjected to three treatments: natural UV (control), −UV, and natural UV plus artificial UV-B treatment (50 mW·m

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“…As áreas que apresenta significância estatística nos trimestres de DJF e SON concentram-se ao sul da Argentina e Chile, com valores de correlação de até +0,7. No entanto, os trimestres apresentaram grandes áreas mais homogêneas, que semelhante ao encontrado em Guarnieri et al (2004), Nozawa et al (2007), Lamy et al, (2018) provavelmente tenham casos específicos que comprovem a exclusiva dependência/influência entre as variáveis. Os trimestres MAM e JJA (Figura 7b e 7c), denotam comportamentos bem distintos na área, no que tangem os valores de correlações.…”

Section: Distribuição Espacial De O 3 E a Sua Correlação Ruv Na América Do Sulunclassified

Variabilidade espaço-temporal da coluna total de ozônio e sua relação com a radiação ultravioleta na América do Sul

Nunes

Mariano

Alonso

2020

Rev. Bras. Geog. Fis.

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O ozônio (O3) representa menos de 1% dos gases da atmosfera terrestre, entretanto, é indispensável para a vida na Terra, devido sua influência no balanço energético do planeta filtrando a Radiação Ultravioleta (RUV) do tipo UV-B, nociva à saúde. O objetivo geral deste trabalho é investigar o impacto da coluna total de ozônio sobre a variabilidade da RUV na América do Sul, utilizando dados diários de RUV e Coluna Total de Ozônio (CTO) do sensor Ozone Monitoring Instrument (OMI) da Aura/NASA (National Aeronautics and Space Administration). Na análise mensal, o valor médio da coluna total de ozônio para o decênio de 2005 a 2014 apresentou uma maior variabilidade no trimestre SON na região da América do Sul. A Análise de Componentes Principais mostrou que nos meses JJA e SON apresenta-se uma correlação direta entre CTO e RUV. As análises dos casos estudados comprovaram que apenas os baixos níveis de ozônio não são determinantes para os altos valores de RUV. Os meses entre julho e outubro apresentam grandes áreas no da América do Sul com forte correlação inversa apresentando regiões estatisticamente significantes. Os resultados exprimem a relação entre a CTO e RUV que dependente da sazonalidade nas diferentes regiões, entre outros fatores. Spatio-temporal variability of total ozone column and ultraviolet radiation: assessment of relationship in South America A B S T R A C T Ozone (O3) represents less than 1% of the earth's atmosphere gases, however, it is indispensable for life on Earth, due to its influence on the planet's energy balance as well as filtering out harmful UV-B type UVR-B the health. The general objective of this work is to investigate the impact of the total ozone column on UVR variability in South America, using daily Aura/NASA Ozone Monitoring Instrument (OMI) sensor and Total Column Ozone (TOC) data daily. National Aeronautics and Space Administration). In the monthly analysis, the average value of the total ozone column for the decade from 2005 to 2014 showed a greater variability in the SON quarter in the South American region. The Analisys Principals Components pattern showed that in the JJA and SON months, there is a direct correlation between TOC and RUV. Analyzes of the case studies have shown that only low ozone levels are not determinant for high UVR values. The months between July and October present large areas in southern South America with strong inverse correlation showing statistically significant regions. The results express that the relationship between TOC and UVR depends on seasonality and different regions, among other factors. Keywords: Solar Radiation, OMI Sensor, Daily Erythmic Dose

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Ground-based observation of solar UV radiation in Japan, Brazil and Chile

Cited by 5 publications

References 7 publications

The Bunsen–Roscoe reciprocity law in ultraviolet-B-induced mortality of the two-spotted spider mite Tetranychus urticae

The Bunsen–Roscoe reciprocity law in ultraviolet-B-induced mortality of the two-spotted spider mite Tetranychus urticae

Difference between Nighttime and Daytime UV-B Irradiation with Respect to the Extent of Damage to Perilla Leaves

Variabilidade espaço-temporal da coluna total de ozônio e sua relação com a radiação ultravioleta na América do Sul

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