Performance of the meteorological radiation model during the solar eclipse of 29 March 2006

Psiloglou, Basil Ε.; Kambezidis, H. D.

doi:10.5194/acp-7-6047-2007

Cited by 53 publications

(12 citation statements)

References 38 publications

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“…Temperature, solar irradiance, relative humidity, wind and cloudiness within the surface layer are among the most common meteorological parameters explored by previous studies of solar eclipses (Fernandez et al, 1993(Fernandez et al, , 1996Hanna, 2000;Psiloglou and Kambezidis, 2007;Emde and Mayer, 2007;Kazadzis et al, 2007). The drop in surface temperature during a solar eclipse is of broad interest and becomes noticeable when the sun is about half covered (Anderson, 1999).…”

Section: Introductionmentioning

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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Section: Introductionmentioning

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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“…Using these two input files, the AMY weather files were packed by the DOE-2.1e program. 18 and 2418 CDD 10 . A ten story standard office building with 2323 m 2 of floor area on each floor was created.…”

Section: Global Solar Radiation Results Obtained Using the Three Solamentioning

confidence: 99%

“…Since the entire calculation process is too complicated for this research, only the main equations are shown here. For more detail, please see the study conducted by Psiloglou and Kambezidis [18].…”

Section: Meteorological Radiation Model (Mrm)mentioning

confidence: 99%

Study on Solar Radiation Models in South Korea for Improving Office Building Energy Performance Analysis

Kim

Jeong

2016

Sustainability

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Abstract:Hourly global solar radiation in a weather file is one of the significant parameters for improving building energy performance analyses using simulation programs. However, most weather stations worldwide are not equipped with solar radiation sensors because they tend to be difficult to manage. In South Korea, only twenty-two out of ninety-two weather stations are equipped with sensors, and there are large areas not equipped with any sensors. Thus, solar radiation must often be calculated by reliable solar models. Hence, it is important to find a reliable model that can be applied in the wide variety of weather conditions seen in South Korea. In this study, solar radiation in the southeastern part of South Korea was calculated using three solar models: cloud-cover radiation model (CRM), Zhang and Huang model (ZHM), and meteorological radiation model (MRM). These values were then compared to measured solar radiation data. After that, the calculated solar radiation data from the three solar models were used in a building energy simulation for an office building with various window characteristics conditions, in order to identify how solar radiation differences affect building energy performance. It was found that a seasonal solar model for the area should be developed to improve building energy performance analysis.

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“…The transmittances from gases are used by both methods (clear and cloudy cases) to account for the absorption of gas molecules. They are parametrized empirically according to reference [55] as follows…”

Section: Aerosol Optical Depth and Speciationmentioning

confidence: 99%

“…Coefficients a, b, c, and d used to compute the shortwave gases transmittances; from references[55][56][57][58].…”

mentioning

confidence: 99%

Satellite Retrieval of Downwelling Shortwave Surface Flux and Diffuse Fraction under All Sky Conditions in the Framework of the LSA SAF Program (Part 1: Methodology)

et al. 2019

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Several studies have shown that changes in incoming solar radiation and variations of the diffuse fraction can significantly modify the vegetation carbon uptake. Hence, monitoring the incoming solar radiation at large scale and with high temporal frequency is crucial for this reason along with many others. The European Organization for the Exploitation of Meteorological Satellites (EUMETSAT) Satellite Application Facility for Land Surface Analysis (LSA SAF) has operationally disseminated in near real time estimates of the downwelling shortwave radiation at the surface since 2005. This product is derived from observations provided by the SEVIRI instrument onboard the Meteosat Second Generation series of geostationary satellites, which covers Europe, Africa, the Middle East, and part of South America. However, near real time generation of the diffuse fraction at the surface level has only recently been initiated. The main difficulty towards achieving this goal was the general lack of accurate information on the aerosol particles in the atmosphere. This limitation is less important nowadays thanks to the improvements in atmospheric numerical models. This study presents an upgrade of the LSA SAF operational retrieval method, which provides the simultaneous estimation of the incoming solar radiation and its diffuse fraction from the satellite every 15 min. The upgrade includes a comprehensive representation of the influence of aerosols based on physical approximations of the radiative transfer within an atmosphere-surface associated medium. This article explains the retrieval method, discusses its limitations and differences with the previous method, and details the characteristics of the output products. A companion article will focus on the evaluation of the products against independent measurements of solar radiation. Finally, the access to the source code is provided through an open access platform in order to share the expertise on the satellite retrieval of this variable with the community.

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Performance of the meteorological radiation model during the solar eclipse of 29 March 2006

Cited by 53 publications

References 38 publications

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

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

Study on Solar Radiation Models in South Korea for Improving Office Building Energy Performance Analysis

Satellite Retrieval of Downwelling Shortwave Surface Flux and Diffuse Fraction under All Sky Conditions in the Framework of the LSA SAF Program (Part 1: Methodology)

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