A Theoretical Model of RGB Attenuation of Solar Radiation Components Under Strong Aerosol Pollution of the Atmosphere

2021 ◽  
Author(s):  
Y. N. Aliyeva ◽  
K. A. Mammadova ◽  
A. N. Huseynova
Keyword(s):  
Theoretical Model ◽  
Solar Radiation ◽  
Aerosol Pollution

scholarly journals The ionospheric responses to the 11 August 1999 solar eclipse: observations and modeling

2008 ◽  
Vol 26 (1) ◽  
pp. 107-116 ◽  
Author(s):  
H. Le ◽  
L. Liu ◽  
X. Yue ◽  
W. Wan
Keyword(s):  
Theoretical Model ◽  
Solar Radiation ◽  
Solar Eclipse ◽  
Ionospheric Disturbance ◽  
Low Latitude ◽  
Ionospheric Response ◽  
Latitude Range ◽  
Eclipse Observations ◽  
E Region ◽  
Low Latitude Ionosphere

Abstract. A total eclipse occurred on 11 August 1999 with its path of totality passing over central Europe in the latitude range 40°–50° N. The ionospheric responses to this eclipse were measured by a wide ionosonde network. On the basis of the measurements of foE, foF1, and foF2 at sixteen ionosonde stations in Europe, we statistically analyze the variations of these parameters with a function of eclipse magnitude. To model the eclipse effects more accurately, a revised eclipse factor, FR, is constructed to describe the variations of solar radiation during the solar eclipse. Then we simulate the effect of this eclipse on the ionosphere with a mid- and low-latitude ionosphere theoretical model by using the revised eclipse factor during this eclipse. Simulations are highly consistent with the observations for the response in the E-region and F1-region. Both of them show that the maximum response of the mid-latitude ionosphere to the eclipse is found in the F1-region. Except the obvious ionospheric response at low altitudes below 500 km, calculations show that there is also a small response at high altitudes up to about 2000 km. In addition, calculations show that when the eclipse takes place in the Northern Hemisphere, a small ionospheric disturbance also appeared in the conjugate hemisphere.

Variability of aerosol extinction of solar radiation in Antarctica

1994 ◽  
Vol 6 (3) ◽  
pp. 419-424 ◽  
Author(s):  
V. F. Radionov
Keyword(s):  
Solar Radiation ◽  
Volcanic Activity ◽  
Considerable Increase ◽  
Temporal Variations ◽  
Stratospheric Aerosol ◽  
Aerosol Extinction ◽  
Mount Pinatubo ◽  
Atmospheric Turbidity ◽  
Aerosol Pollution ◽  
Using Data

Temporal variations of the aerosol optical depth and transmission coefficient of the atmosphere are considered using data from Mirny Observatory, Antarctica. Year-to-year variability of these parameters is determined mainly by stratospheric aerosol pollution due to volcanic activity. A considerable increase of atmospheric turbidity has been observed since the end of September 1991. This phenomenon seems to be associated with the Mount Pinatubo volcanic eruption.

Atmosphere and ocean

1962 ◽  
Vol 265 (1322) ◽  
pp. 331-334
Keyword(s):  
Theoretical Model ◽  
Kinetic Energy ◽  
Solar Radiation ◽  
Free Convection ◽  
Rotating System ◽  
Short Contribution ◽  
Atmosphere System ◽  
Ocean Atmosphere ◽  
Marine Meteorology ◽  
Made In

The main point of my short contribution to this discussion has already been made for me by previous speakers. They have been concerned with various oceanic phenomena all of which are affected, often strongly, by interaction with the atmosphere. So there can be little doubt of the importance of meteorology, particularly marine meteorology, to a study of the ocean. It is well known that all but tidal motions in the atmosphere-ocean system are caused by the conversion of solar radiation into kinetic energy; basically the problem is one of free convection in this unequally heated, inhomogeneous rotating system. It is hardly surprising that no one has yet found a tractable theoretical model which represents the ocean-atmosphere system as a whole. Progress continues to be made in dynamical meteorology and has been rapid in dynamical oceanography but the two systems have not been linked together

Сhanges in air quality and aerosol pollution in Moscow megacity and its direct and indirect impact on radiative and meteorological properties of the atmosphere due to COVID-19 pandemic lockdown in spring 2020 according to modelling and measurements.

2021 ◽  
Author(s):  
Nataly Chubarova ◽  
Elizaveta Androsova ◽  
Alexander Kirsanov ◽  
Alexei Poliukhov ◽  
Ekaterina Zhdanova ◽  
...  
Keyword(s):  
Air Quality ◽  
Solar Radiation ◽  
Air Temperature ◽  
Regional Climate ◽  
Urban Pollution ◽  
Urban Aerosol ◽  
Geochemical Processes ◽  
Noticeable Effect ◽  
Meteorological Observatory ◽  
Aerosol Pollution

<p>Atmospheric aerosol has a noticeable effect on the microphysical and optical properties of the atmosphere, solar radiation, temperature and humidity conditions, thereby determining the quality of the forecast of important meteorological elements and affecting the regional climate and the dynamics of geochemical processes. Using the results of the spring AeroRadCity experiment at the MSU Meteorological Observatory in 2018-2019, and numerical calculations on the base of modern COSMO and COSMO-ART mesoscale models using Russian (-Ru) configurations we determined the level and main features of urban air/aerosol pollution, and assessed its magnitude and its impact on the radiative and meteorological characteristics of the atmosphere in typical conditions (Chubarova et al., 2020). In the context of the coronavirus pandemic in 2020, especially during the period of lockdown in the spring, there was a significant decrease in emissions of pollutants in many countries, including Russia. The aim of this study is to show the consequences of decrease in emissions of pollutants on the air quality and on urban aerosol pollution. A special attention is paid to the division between the effects of meteorological factors and the influence of pollution emission on aerosol and gas concentration. The effects of the air pollution decrease on solar radiation and air temperature during this period have been analyzed using COSMO-Ru-ART model.  For a more detailed study of the observed spatial aerosol distribution on solar radiation and air temperature, we have developed a methodology of the implementation of the satellite aerosol optical thickness (AOT) data in the COSMO-Ru model. Using this approach we evaluated the radiative and temperature effects observed due to aerosol in typical conditions during the spring of 2018-2019 and during the period of lockdown in the spring of 2020 under various meteorological conditions. To do this, the satellite AOT data from the MAIAC/MODIS algorithm and aerosol measurements from Cimel sun photometers data were used for characterising the urban aerosol in typical and lockdown conditions. We also discuss the aerosol indirect effects on cloud properties using an experimental scheme of COSMO-Ru model and their influence on solar radiation and surface temperature during this period. The aerosol study has been partially supported by the RSF grant number 18-17-00149; the analysis of gas species has been partially funded by the megagrant number 2020-220-08-5835.</p><p>Reference:</p><p>Chubarova N.Ye., Ye.Yu. Zhdanova., Ye.Ye. Androsova, A.A. Kirsanov, M.V. Shatunova, Yu.O. Khlestova, Ye.V. Volpert, A.A. Poliukhov, I.D. Eremina, D.V. Vlasov, O.B. Popovicheva, A.S. Ivanov, Ye.V. Gorbarenko, Ye.I. Nezval, D.V. Blinov, G.S. Rivin. The aerosol urban pollution and its effects on weather, regional climate and geochemical processes: Monograph / Edited by N.Ye. Chubarova – Moscow, MAKS Press, 2020. 339 pp.  ISBN 978-5-317-06464-8</p>

Intensification of aerosol pollution associated with its feedback with surface solar radiation and winds in Beijing

2016 ◽  
Vol 121 (8) ◽  
pp. 4093-4099 ◽  
Author(s):  
Xin Yang ◽  
Chuanfeng Zhao ◽  
Jianping Guo ◽  
Yang Wang
Keyword(s):  
Solar Radiation ◽  
Surface Solar Radiation ◽  
Aerosol Pollution

scholarly journals Daily performance of a solar hybrid regenerative gas turbine in Colombia

2021 ◽  
Vol 2073 (1) ◽  
pp. 012012
Author(s):  
F Moreno-Gamboa ◽  
E Vera-Duarte ◽  
G Guerrero-Gómez
Keyword(s):  
Theoretical Model ◽  
Solar Radiation ◽  
Combustion Chamber ◽  
Gas Turbine ◽  
Inlet Temperature ◽  
Solar Concentrator ◽  
Engine Efficiency ◽  
Central Receiver ◽  
Solar Receiver ◽  
The Impact

Abstract This work presents the evolution of the operation of a regenerative hybrid solar gas turbine in an average day of the year. The system is evaluated by means of a thermodynamic model that includes a solar concentrated heliostat field solar concentrator with central receiver, a combustion chamber, and the thermal engine. The model is applied in Barranquilla, Colombia using local temperature and the solar radiation estimated with a theoretical model. Power output, the global efficiency and thermal engine efficiency are estimated. Additionally, to estimate the temperatures in different states of the cycle with and without regenerator. Finally, the impact of the regenerator is evaluated, which can increase the temperature of the solar receiver by up to 13.6%, and the inlet temperature to the combustion chamber increases by 17.3% at noon, when solar radiation is maximum.

scholarly journals Plants, Shade and Solar Radiation Effect on Bio-Aerosol Pollution in Wastewater Treatment Plants

2020 ◽  
Vol 43 (4) ◽  
pp. 1-5
Author(s):  
Soliman aborawash ◽  
Muharram Abdu Allah El Din ◽  
Kamal Radwan ◽  
Huda El-Gamal
Keyword(s):  
Wastewater Treatment ◽  
Solar Radiation ◽  
Radiation Effect ◽  
Wastewater Treatment Plants ◽  
Aerosol Pollution

A THEORETICAL MODEL OF SOLAR RADIATION TRANSFER IN A ROW-CROP CANOPY

1990 ◽  
Vol 33 (3) ◽  
pp. 0917-0924 ◽  
Author(s):  
X. Yang ◽  
T. H. Short ◽  
R. D. Fox ◽  
W. L. Bauerle
Keyword(s):  
Theoretical Model ◽  
Solar Radiation ◽  
Radiation Transfer ◽  
Crop Canopy ◽  
Row Crop

Wheat yield losses in India due to ozone and aerosol pollution and their alleviation: A critical review

2019 ◽  
Vol 48 (3) ◽  
pp. 181-189 ◽  
Author(s):  
Tony Fischer
Keyword(s):  
Stomatal Conductance ◽  
Solar Radiation ◽  
Wheat Yield ◽  
Diffuse Radiation ◽  
Total Solar Radiation ◽  
Yield Losses ◽  
Potential Yield ◽  
Pollution Damage ◽  
Aerosol Pollution ◽  
Genetic Tolerance

This review examines estimations made over the last two decades of the wheat yield losses in India due to elevated tropospheric ozone (O3) and to aerosol pollution. Notwithstanding the poor record of O3 and solar radiation measurement in wheat regions, a reasonable estimate can be made yield losses around 2010. From an average of the more credible studies, this is around 30% compared to the yield which would have been achieved with 1970 solar radiation and O3 assumed to be <40 ppb (parts per billion by volume). The results suggest that O3 causes two-thirds of the loss and reduced total solar radiation due to aerosols (but corrected for increased diffuse radiation) one-third. Ozone, in particular, appears to be still increasing. It is likely that increased stomatal conductance (e.g. due to more irrigation (97% of production now irrigated) and the unwitting consequence of breeding for increased potential yield) has added to current O3 losses. Much is known about the physiology of O3 damage in the wheat leaf and plant. What is lacking is a thorough search for genetic tolerance independent of stomatal conductance and potential yield penalties, and this requires, at least initially, many chamber and/or FACE (free-air CO2 enhancement) experiments under typical Indian field conditions. Genetic engineering could offer a solution for O3 but only in the long term. Other solutions to pollution damage are very limited, but earlier planting should help wheat escape the rising O3 level in the spring. The 40 million tonnes of wheat currently foregone annually by India due to these two pollutants, even if an overestimate, far exceeds estimates of wheat yield loss to date due to climate change and demands concerted action to reduce the sources of this pollution, bringing added direct advantages for other crops and for human health.

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