Impacts of the solar eclipse of 29 March 2006 on the surface ozone concentration, the solar ultraviolet radiation and the meteorological parameters at Athens, Greece

Tzanis, Chris G.; Varotsos, C.; Viras, L. G.

doi:10.5194/acp-8-425-2008

Cited by 81 publications

(53 citation statements)

References 35 publications

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“…(Founda, et al, 2007;Zerefos, et al, 2001) Therefore, this condition disturbs some photochemical reactions both in atmosphere and in the ground. Tzanis, et al, 2008;Bojkov, 1968;Nishanth, et al, 2011;Eastman & Stedmand, 1980;Hunt, 1965;Chudzyński, et al, 2001;Abram, et al, 2000).…”

Section: Solar Eclipse Phenomenonmentioning

confidence: 99%

“…However, no research investigates on the impact of solar eclipse to the photodecomposition of organic material in the Earth. Although some reports examined the photochemical properties, (Hunt 1965;Bojkov 1968;Eastman et al, 1980;Abram et al, 2000;Chudzyński et al, 2001;Tzanis et al, 2008;Sharma et al, 2010;Nishanth et al, 2011) they were limited to the chemical components in the atmosphere and did not consider the incidents in the ground, such as photodecomposition process.…”

Section: Introductionmentioning

confidence: 99%

“…(Abram et al, 2000) Solar eclipse phenomenon has attracted researchers from various fields. Many researchers investigated the incidents related to the meteorological parameters (e.g., temperature, Nishanth et al, 2011) wind speed, (Nishanth et al, 2011) gravity, (Altadill et al, 2001;Šauli et al, 2006) humidity, (Nishanth et al, 2011) geomagnetic field, (Özcan et al, 2004) ionospheric electron content, (Liu et al, 1999) and light irradiation Zerefos et al, 2001;Nishanth et al, 2011;Libra et al, 2016)) and the photochemical properties in the atmosphere (Hunt 1965;Bojkov 1968;Eastman et al, 1980;Abram et al, 2000;Chudzyński et al, 2001;Tzanis et al, 2008;Sharma et al, 2010;Nishanth et al, 2011). However, no research investigates on the impact of solar eclipse to the photodecomposition of organic material in the Earth.…”

Section: Introductionmentioning

confidence: 99%

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Photodecomposition Profile of Organic Material during the Partial Solar Eclipse of 9 March 2016 and Its Correlation with Organic Material Concentration and Photocatalyst Amount

Nandiyanto

Sofiani

Permatasari

et al. 2016

IJOST

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The present study investigated the photodecomposition of an organic material during the partial (88.76%) solar eclipse phenomenon of 9 March 2016 in Bandung, Indonesia. Curcumin and anatase titanium dioxide (TiO 2 ) particles were used as models of organic material and photocatalyst, respectively. The influence of the process parameters (i.e., curcumin concentration and the amount of TiO 2 ) on the photodecomposition process was also investigated. The results showed that the curcumin was decomposed along with the solar light irradiation time. During the solar eclipse, the photodecomposition rate is suddenly down. The partial solar eclipse provided a slower photodecomposition process than the process under sunny days (conducted on 8 and 10 March 2016). The concentration of curcumin and the amount of TiO 2 also have played an important role in the photodecomposition, in which the lower concentration of curcumin and the higher amount of TiO 2 have a correlation to the obtainment of higher photodecomposition rate.

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Section: Solar Eclipse Phenomenonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Photodecomposition Profile of Organic Material during the Partial Solar Eclipse of 9 March 2016 and Its Correlation with Organic Material Concentration and Photocatalyst Amount

Nandiyanto

Sofiani

Permatasari

et al. 2016

IJOST

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“…More recently in the total solar eclipse of 29 March 2006, observations and modeling show that there was a significant decrease in O 3 and NO and an increase in NO 2 at polluted sites, but no clear impact on these pollutants at unpolluted sites (Zanis et al, 2007). The decrease in the surface ozone concentration that was observed after the beginning of the eclipse lasted two hours, probably due to the decreased efficiency of photochemical ozone formation (Tzanis et al, 2008).…”

mentioning

confidence: 99%

The effects of a solar eclipse on photo-oxidants in different areas of China

Wang

Zhang

et al. 2011

Atmos. Chem. Phys.

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Abstract. This study investigates the effects of the total solar eclipse of 22 July 2009 on surface ozone and other photooxidants over China. A box model was used to study the sensitivity of ozone to the limb darkening effect during an eclipse event, and to show that the impact on ozone is small (less than 0.5 %). In addition, the regional model WRFChem was applied to study the effects of the eclipse on meteorological and chemical parameters, focusing on different regions in China. Chemical and meteorological observations were used to validate the model and to show that it can capture the effects of the total solar eclipse well. Model calculations show distinct differences in the spatial distributions of meteorological and chemical parameters with and without the eclipse. The maximum impacts of the eclipse occur over the area of totality, where there is a decrease in surface temperature of 1.5 • C and decrease in wind speed of 1 m s −1 . The maximum impacts on atmospheric pollutants occur over parts of north and east China where emissions are greater, with an increase of 5 ppbv in NO 2 and 25 ppbv in CO and a decrease of 10 ppbv in O 3 and 4 ppbv in NO. This study also demonstrates the effects of the solar eclipse on surface photo-oxidants in different parts of China. Although the sun was obscured to a smaller extent in polluted areas than in clean areas, the impacts of the eclipse in polluted areas are greater and last longer than they do in clean areas. In contrast, the change in radical concentrations (OH, HO 2 and NO 3 ) in clean areas is much larger than in polluted areas mainly because of the limited source of radicals in these arCorrespondence to: Z. F. Wang (zifawang@mail.iap.ac.cn) eas. The change in radical concentrations during the eclipse reveals that nighttime chemistry dominates in both clean and polluted areas. As solar eclipses provide a natural opportunity to test more thoroughly our understanding of atmospheric chemistry, especially that governed by photolysis, a comprehensive experimental campaign during a future solar eclipse is highly desirable.

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“…Over the last decades, atmospheric chemical composition such as carbon dioxide, ozone, and other greenhouse gases has been systematically monitored by satellite and ground-based instruments (Efstathiou, Varotsos, & Kondratyev, 1998;Efstathiou, Varotsos, Singh, Cracknell, & Tzanis, 2003;Gernandt, Goersdorf, Claude, & Varotsos, 1995;Kondratyev, Varotsos, & Cracknell, 1994;Reid et al, 1994Reid et al, , 1998Varotsos & Cracknell, 1993Varotsos, Kalabokas, & Chronopoulos, 1994;Varotsos, Kondratyev, & Cracknell, 2000;Varotsos, Kondratyev, & Katsikis, 1995). Such measurements are now necessary to monitor extreme weather events by observing surface temperature and wind field, through advanced optical satellites and remotely sensed ground-based instrumentation (Efstathiou, Tzanis, Cracknell, & Varotsos, 2011;Efstathiou & Varotsos, 2010;Tzanis, Varotsos, & Viras, 2008;Varotsos, 2002Varotsos, , 2005Varotsos & Cartalis, 1991;Varotsos & Cracknell, 2004;Varotsos, Efstathiou, & Tzanis, 2009;Varotsos & Tzanis, 2012).…”

Section: Introductionmentioning

confidence: 99%

A new big data approach based on geoecological information-modeling system

Varotsos

Krapivin

2017

Big Earth Data

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In this paper, the geoecological information-modeling system (GIMS) is described as possible improvement of the Big Data approach. The main GIMS function is the use of algorithms and models that capture the fundamental processes controlling the evolution of the climate-nature-society (CNSS) system. The GIMS structure includes 24 blocks that realize a series of models and algorithms for global big data processing and analysis. The CNSS global model is the basic block of the GIMS. The operational tools of GIMS are demonstrated by examining several scenarios associated with the reconstruction of forest areas. It is shown that significant impacts on forests can lead to global climate variations on a large scale.

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Impacts of the solar eclipse of 29 March 2006 on the surface ozone concentration, the solar ultraviolet radiation and the meteorological parameters at Athens, Greece

Cited by 81 publications

References 35 publications

Photodecomposition Profile of Organic Material during the Partial Solar Eclipse of 9 March 2016 and Its Correlation with Organic Material Concentration and Photocatalyst Amount

Photodecomposition Profile of Organic Material during the Partial Solar Eclipse of 9 March 2016 and Its Correlation with Organic Material Concentration and Photocatalyst Amount

The effects of a solar eclipse on photo-oxidants in different areas of China

A new big data approach based on geoecological information-modeling system

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