Possible influences of solar radiation variations on the atmospheric circulation in the northern hemisphere of the earth

1986 ◽  
Vol 8 (3) ◽  
pp. 279-294 ◽  
Author(s):  
Manfred Schmidt
Keyword(s):  
Solar Radiation ◽  
Atmospheric Circulation ◽  
Northern Hemisphere ◽  
The Earth

scholarly journals Variability of global radiation under the influence of cloudiness, cloud types and atmospheric circulation in Southern Poland

2021 ◽  
Author(s):  
Dariusz Zajączkowski ◽  
Ewa Łupikasza
Keyword(s):  
Solar Radiation ◽  
Atmospheric Circulation ◽  
Extreme Values ◽  
Global Radiation ◽  
Meteorological Station ◽  
Annual Data ◽  
Southern Poland ◽  
Circulation Types ◽  
The Earth

<p>Solar radiation reaching the Earth’s surface is a crucial energy source in the climate system and the primary factor regulating the planet energy balance. The amount of solar radiation reaching the Earth surface is conditioned by the atmosphere composition and its transparency that is determined by the content of aerosols, moisture and clouds. The Górnośląsko-Zagłębiowska Metropolis (GZM) located in southern Poland, is the most urbanized part of the country and one of the most polluted parts of Europe, which has an impact on the atmosphere transparency and amount of global radiation at the Earth's surface. This study aims to determine the daily and annual variability in global radiation and its relationship with cloudiness, selected cloud types and atmospheric circulation.</p><p>This study is based on unique 10-minute global radiation data measured in the centre of GZM  at the meteorological station of the faculty of Earth Sciences. The data covers the periods between 2002 and 2019. Average radiation intensity was converted into hourly and daily radiation sums expressed in MJ/m<sup>2</sup>. Data on cloudiness were taken from the synoptic station Katowice Muchowiec located 9.6 km far from the meteorological station in GZM. The degree of cloud cover is expressed in a percentage of the sky covered with clouds. To analyse relationships between atmospheric circulation and global radiation, the calendar of circulation types and air masses for southern Poland was used.</p><p>Daily course calculated based on annual data showed that global radiation reached its highest values of 1.5 MJ/m<sup>2</sup> at 10 UTC. The highest hourly sums of global radiation varied seasonally from about 0.5 MJ/m<sup>2</sup> in winter to 2.0 MJ/m<sup>2</sup> in summer. The widest range of variability in particular hours was found in spring (the quartiles: 1.2 - 2.0 MJ/m<sup>2</sup>) and autumn (quartiles: 0.7 to 1.4 MJ/m<sup>2</sup>). It occurred that most cloudiness classes enhanced the global radiation compared to cloudless conditions. The highest radiation sums were recorded during the days with a cloudiness >0 and ≤20%. During such days, global radiation was higher by 3.2 MJ/m<sup>2</sup> than during cloudless days and 7.0 MJ/m<sup>2</sup> than the long-term average 2002-2019. Daily global radiation was lower than the long-term average by about 3.0 MJ/m<sup>2</sup> only during days with cloudiness > 80%. Cirrus, cirrostratus, cirrocumulus and cumulus enhanced global radiation by about 40% compared to the long-term average. Altostratus, nimbostratus and stratus reduced the global radiation by about 75% compared to the long-term average. Global radiation also varied depending on circulation types. Extreme values of global radiation were registered under non-advective anticyclonic conditions and during southern advection (maximum 15.0 MJ/m<sup>2</sup>) and during cyclonic types with air advection from the north (minimum 6.8 MJ/m<sup>2</sup>)</p>

Prediction of the solar radiation on the Earth using support vector regression technique

2015 ◽  
Vol 68 ◽  
pp. 179-185 ◽  
Author(s):  
Jamshid Piri ◽  
Shahaboddin Shamshirband ◽  
Dalibor Petković ◽  
Chong Wen Tong ◽  
Muhammad Habib ur Rehman
Keyword(s):  
Solar Radiation ◽  
Support Vector Regression ◽  
Regression Technique ◽  
Support Vector ◽  
The Earth

scholarly journals Direct Solar Radiation and Atmospheric Turbidity in Mikołajki in the Years 1971–1980 and 1991–2000

2009 ◽  
Vol 2 (1) ◽  
pp. 19-33
Author(s):  
Joanna Uscka-Kowalkowska
Keyword(s):  
Solar Radiation ◽  
Solar Irradiance ◽  
Direct Solar Radiation ◽  
Spectral Structure ◽  
Solar Constant ◽  
Air Masses ◽  
Atmospheric Turbidity ◽  
The Earth

Abstract The present study deals with the changing amount of incoming direct solar radiation and the optical state of the atmosphere in Mikołajki in the years 1971-1980 and 1991-2000. The highest level of solar irradiance in these two decades occurred on 23rd June 1977 and amounted to 1043.9 W·m-2. Compared to the first decade analysed, the percentage of the solar constant reaching the Earth in the second decade was higher. The spectral structure of the radiation also changed - the share of the shortest waves (λ<525 nm) increased, whereas the amount of waves with a wavelength of 710 nm or more decreased. In both study periods the annual course of solar extinction (expressed in terms of Linke’s turbidity factor) turned out to have been typical, with the highest values in summer and the lowest in winter. In the years 1991-2000, in all seasons, a lower atmospheric turbidity was observed in comparison with the years 1971-1980. The atmospheric turbidity was also analysed with relation to the air masses. In both decades in question the lowest turbidity occurred in arctic air masses and the highest in tropical air masses. An improved optical state of the atmosphere was observed in all considered air masses, though the biggest decrease in turbidity was found in polar air masses, particularly in the polar maritime old air (TLAM2 dropped by 0.75) and polar continental air (by 0.70).

scholarly journals High resolution grid of potential incoming solar radiation for Serbia

2015 ◽  
Vol 19 (suppl. 2) ◽  
pp. 427-435 ◽  
Author(s):  
Jelena Lukovic ◽  
Branislav Bajat ◽  
Milan Kilibarda ◽  
Dejan Filipovic
Keyword(s):  
Solar Radiation ◽  
Driving Force ◽  
Total Solar Radiation ◽  
Surface Solar Radiation ◽  
Natural Processes ◽  
Web Map ◽  
Complex Interactions ◽  
The Earth ◽  
Digital Elevation ◽  
Elevation Model

Solar radiation is a key driving force for many natural processes. At the Earth?s surface solar radiation is the result of complex interactions between the atmosphere and Earth?s surface. Our study highlights the development and evaluation of a data base of potential solar radiation that is based on a digital elevation model (DEM) with a resolution of 90 m over Serbia. The main aim of this paper is to map solar radiation in Serbia using DEM. This is so far the finest resolution being applied and presented using DEM. The final results of the potential direct, diffuse and total solar radiation as well as duration of insolation databases of Serbia are portrayed as thematic maps that can be communicated and shared easily through the cartographic web map-based service.

Modeling Solar Radiation at the Earth Surface

2012 ◽  
pp. 127-179 ◽  
Author(s):  
Marius Paulescu ◽  
Eugenia Paulescu ◽  
Paul Gravila ◽  
Viorel Badescu
Keyword(s):  
Solar Radiation ◽  
Earth Surface ◽  
The Earth

scholarly journals Northern Hemisphere Stationary Waves in a Changing Climate

2019 ◽  
Vol 5 (4) ◽  
pp. 372-389 ◽  
Author(s):  
Robert C. J. Wills ◽  
Rachel H. White ◽  
Xavier J. Levine
Keyword(s):  
Climate Change ◽  
Atmospheric Circulation ◽  
Northern Hemisphere ◽  
Climate Models ◽  
Regional Climate ◽  
Stationary Wave ◽  
Future Research ◽  
Stationary Waves ◽  
The Pacific ◽  
Longitudinal Variations

Abstract Purpose of Review Stationary waves are planetary-scale longitudinal variations in the time-averaged atmospheric circulation. Here, we consider the projected response of Northern Hemisphere stationary waves to climate change in winter and summer. We discuss how the response varies across different metrics, identify robust responses, and review proposed mechanisms. Recent Findings Climate models project shifts in the prevailing wind patterns, with corresponding impacts on regional precipitation, temperature, and extreme events. Recent work has improved our understanding of the links between stationary waves and regional climate and identified robust stationary wave responses to climate change, which include an increased zonal lengthscale in winter, a poleward shift of the wintertime circulation over the Pacific, a weakening of monsoonal circulations, and an overall weakening of stationary wave circulations, particularly their divergent component and quasi-stationary disturbances. Summary Numerous factors influence Northern Hemisphere stationary waves, and mechanistic theories exist for only a few aspects of the stationary wave response to climate change. Idealized studies have proven useful for understanding the climate responses of particular atmospheric circulation features and should be a continued focus of future research.

VII.—The Dynamics of Cyclones and Anticyclones. Part III

1916 ◽  
Vol 36 (1-2) ◽  
pp. 174-185
Author(s):  
John Aitken
Keyword(s):  
Water Vapour ◽  
Atmospheric Circulation ◽  
Moist Air ◽  
The Earth ◽  
Isothermal Layer ◽  
New Knowledge ◽  
The Mean

In 1900 I communicated to this Society a paper on the above subject. Since that date a great deal of information has been obtained by means of free balloons carrying instruments which recorded the temperature, humidity, and pressure of the air up to great elevations. Much of this new knowledge seems to contradict our previous ideas, and does not seem to fit into the old convectional theory that cyclones are formed by the rising of the hot, moist air from the surface of the earth; their energy being due to their temperature and to the heat liberated by the condensation of the water vapour in them. We are told by those who have studied the bearing of the new knowledge on our atmospheric circulation that the old theory is “utterly untenable.” Their reasons for this conclusion are, first, that the recent investigations show that the air is colder in cyclones than in anticyclones; second, that the isothermal layer is lower than the mean over cyclones, while it is higher than the mean over anticyclones. At first sight these discoveries seem to shatter the convectional theory, but before we come to any conclusion I should like to present certain facts which it appears to me will require to be considered before we scrap our old ideas.

Sign in / Sign up

Export Citation Format

Share Document