Space Weather and Link to Climate Change

2019 ◽  
pp. 1-20
Author(s):  
Hamid Nebdi
Keyword(s):  
Climate Change ◽  
Solar Wind ◽  
Space Weather ◽  
Human Life ◽  
The Other ◽  
The Sun ◽  
Technological Systems ◽  
Other Hand ◽  
Weather And Climate ◽  
Earth Connection

Our nearest shining star, the Sun, source of radiations and energy, sometimes generates severe events and phenomena in space which can affect our technology and biosphere. On the other hand, space weather, as defined by National Aeronautics and Space Administration (NASA), is conditions on the Sun and in the solar wind, magnetosphere, ionosphere, and thermosphere that can influence the performance and reliability of space-borne and ground-based technological systems and can endanger human life or health. A brief description of the Sun-Earth connection is firstly presented. Secondly, a particular attention is given to highlight the Sun's variability and the link between the space weather and climate change by means of some recent studies.

Severe Space Weather: Simulations of Scaled-Up Storms

2020 ◽  
Author(s):  
Joachim Raeder ◽  
Beket Tulegenov ◽  
William Douglas Cramer ◽  
Kai Germaschewswski ◽  
Banafsheh Ferdousi ◽  
...  
Keyword(s):  
Solar Wind ◽  
Space Weather ◽  
Extreme Events ◽  
The Other ◽  
Polar Cap ◽  
Quiet Sun ◽  
Other Hand ◽  
Weather Events ◽  
The One ◽  
Extreme Space Weather Events

<p>Extreme space weather events are extremely rare, but pose a significant threat to our infrastructure. The one known event of such kind was the Carrington storm of 1859, but it was not well documented; in particular the solar wind and IMF conditions that caused it remain guesses. On the other hand, the STEREO-A observations of July 23, 2012 showed solar wind and IMF parameters that are most likely comparable to those of the Carrington event, and remind us that such extreme events are very well possible even during times of a quiet sun. Here, we use OpenGGCM simulations of such events to assess the effects of such solar wind and IMF on the magnetosphere. Precious work has shown that during the much more benign Halloween storm the nose of the magnetopause was as close as 4.9 RE, with an accordingly large polar cap. We will present simulations of a sequence of scaled-up storms with increasingly larger driving and demonstrate the further expansion of the polar cap, intensity of plasma injections, and the eventual saturation. In addition, we will show how the ionosphere potential penetrates to lower latitudes and affects the ionosphere and thermosphere at mid latitudes when the solar wind drivers become extreme.</p>

The Values and Limits of Qohelet’s Sub-Celestial Economy

2014 ◽  
Vol 64 (1) ◽  
pp. 21-33
Author(s):  
Scott C. Jones
Keyword(s):  
Human Life ◽  
The Other ◽  
New Order ◽  
The Sun ◽  
Empirical Observation ◽  
Other Hand ◽  
The One ◽  
Final Answer

Abstract Qohelet draws upon the metaphors of a mercantile economy in order to assign values to human life. The primary context in which he calculates these values is time-under-the-sun. In the economy of time-under-the-sun, there are both absolute and relative credits. On the one hand, the inevitable onset of death reduces all credits or debits to zero. Yet on the other hand, Qohelet claims that the enjoyment of one’s profits during one’s lifetime is a relative credit. The sage, however, also perceives another sort of reckoning which reaches beyond his empirical observation. He speaks of a matrix outside of the rule of the sun, which he calls עולם. In this space beyond time God has ordained a judgment in which the pious will profit and the impious will suffer loss. The onset of a new order beyond the sun raises the possibility that zero might not be the final answer after all.

scholarly journals An Insight into Space Weather

2017 ◽  
Vol 2 (1) ◽  
pp. 46-57
Author(s):  
Ashish Mishra ◽  
Mukul Kumar
Keyword(s):  
Solar Wind ◽  
Space Weather ◽  
Solar Flares ◽  
Interplanetary Space ◽  
Power Grids ◽  
The Sun ◽  
Solar Winds ◽  
The Earth ◽  
Earth Connection ◽  
Insight Into

The present article gives a brief overview of space weather and its drivers. The space weather is of immense importance for the spaceborne and ground-based technological systems. The satellites, the power grids, telecommunication and in severe conditions the human lives are at risk. The article covers the effects of solar transient activities (e.g. Solar flares, Coronal mass ejections and Solar winds etc.) and their consequences on the Earth’s atmosphere. The space weather is the change in the conditions of interplanetary space because of the solar transient activities. We also discussed the importance of the solar wind which is a continuous flow of the charged energy particles from the Sun to the Earth in respect of the space weather. This article also put light on the Sun-Earth connection and effects of the space weather on it. The Earth’s magnetosphere, formed by the interaction of solar wind and Earth’s magnetic field behaves like a shield for the Earth against the solar wind.

Space weather

2002 ◽  
Vol 10 (2) ◽  
pp. 249-261
Author(s):  
ALEXI GLOVER ◽  
EAMONN DALY ◽  
ALAIN HILGERS ◽  
DAVID BERGHMANS
Keyword(s):  
Space Weather ◽  
Human Life ◽  
Power Grids ◽  
The Sun ◽  
Health It ◽  
Technological Systems ◽  
Physical Processes ◽  
Radio Communications ◽  
Weather Effects ◽  
Terrestrial System

Space weather is caused by conditions on the Sun and in the solar wind, the magnetosphere, ionosphere and thermosphere that can influence the performance and reliability of space-borne and ground-based technological systems and can affect human life or health. It affects man-made systems such as satellite electronics, terrestrial power grids and radio communications. This paper provides an overview of how space weather arises in the solar–terrestrial system and how physical processes are able to cause space weather effects. We also discuss European perspectives and activities geared towards the possible initiation of a European Space Weather programme.

scholarly journals A review of the SCOSTEP’s 5-year scientific program VarSITI—Variability of the Sun and Its Terrestrial Impact

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Kazuo Shiokawa ◽  
Katya Georgieva
Keyword(s):  
Solar Wind ◽  
Interplanetary Space ◽  
Solar Wind Plasma ◽  
The Sun ◽  
Scientific Program ◽  
Solar Cycles ◽  
Grand Minimum ◽  
The Earth ◽  
Earth Connection ◽  
Near Future

AbstractThe Sun is a variable active-dynamo star, emitting radiation in all wavelengths and solar-wind plasma to the interplanetary space. The Earth is immersed in this radiation and solar wind, showing various responses in geospace and atmosphere. This Sun–Earth connection variates in time scales from milli-seconds to millennia and beyond. The solar activity, which has a ~11-year periodicity, is gradually declining in recent three solar cycles, suggesting a possibility of a grand minimum in near future. VarSITI—variability of the Sun and its terrestrial impact—was the 5-year program of the scientific committee on solar-terrestrial physics (SCOSTEP) in 2014–2018, focusing on this variability of the Sun and its consequences on the Earth. This paper reviews some background of SCOSTEP and its past programs, achievements of the 5-year VarSITI program, and remaining outstanding questions after VarSITI.

III. Spectroscopic observations of the sun

1867 ◽  
Vol 15 ◽  
pp. 256-258 ◽  
Keyword(s):  
The Other ◽  
The Sun ◽  
Chemical Action ◽  
Spectroscopic Observations ◽  
Gaseous Mass ◽  
Other Hand ◽  
Sun Spots ◽  
Physical Constitution ◽  
Upward Current

The two most recent theories dealing with the physical constitution of the sun are due to M. Faye and to Messrs. De la Rue, Balfour Stewart, and Loewy. The chief point of difference in these two theories is the explanation given by each of the phenomena of sun-spots. Thus, according to M. Faye, the interior of the sun is a nebulous gaseous mass of feeble radiating-power, at a temperature of dissociation; the photosphere is, on the other hand, of a high radiating-power, and at a temperature sufficiently low to permit of chemical action. In a sunspot we see the interior nebulous mass through an opening in the photosphere, caused by an upward current, and the sun-spot is black, by reason of the feeble radiating-power of the nebulous mass.

scholarly journals TEORI DIALOGISME BAKHTIN DAN KONSEP-KONSEP METODOLOGISNYA

2017 ◽  
Vol 1 (2) ◽  
pp. 235
Author(s):  
Fadlil Munawwar Manshur
Keyword(s):  
Human Life ◽  
Human Existence ◽  
The Other ◽  
Literary Genre ◽  
The Novel ◽  
Other Hand ◽  
The Universe

This paper discusses the theory advanced by Bakhtin about dialogism and methodological concepts. This theory to formulate the concept of human existence on the other, which is based on the idea that humans judge him from the viewpoint of others. Humans understand the moments of consciousness and take it into account through the eyes of others. According to this theory, the essence of human life is a dialogue. The Method of heteroglossia talks about signs in the universe of individuals because of the word "heteros" means "other" or different, while "glossia" means the tongue or language. In this method mentioned that people are saying needs to be heard, and the author also has the same rights that words need to be heard. A word is born from dialogue to address the problems of life. On the other hand, Bakhtin sees carnival method has spawned a new literary genre, the polyphonic novel. The polyphonic novel is a novel that is characterized by a plurality of voice or consciousness, and the voices or the overall awareness dialogical. Polyphonic essentially a "new theory of authorial viewpoint". Polyphonic appear in fiction when the position of the author freely allowed to interact with the characters. The characters in the novel are freely polyphonic appear to argue with each other and even with the author.

scholarly journals Universální život a život lidský. K ontologii přírody u Jana Patočky a Maurice Merleau-Pontyho

REFLEXE ◽  
2021 ◽  
Vol 2021 (60) ◽  
pp. 29-63
Author(s):  
Martin Rabas
Keyword(s):  
Present Article ◽  
Human Life ◽  
Descriptive Analysis ◽  
Human Experience ◽  
The Other ◽  
Philosophical Approach ◽  
Other Hand ◽  
Inorganic Matter ◽  
The World ◽  
The One

The present article has two objectives. One is to elucidate the philosophical approach presented in the so-called Strahov Systematic Manuscripts of Jan Patočka in terms of consciousness and nature. The other is to compare this philosophical approach with Maurice Merleau-Ponty’s theses on nature, as elaborated in 1956–1961, and to point out some advantages and limitations of both approaches. In our opinion, Patočka’s philosophical approach consists, on the one hand, in a descriptive analysis of human experience, which he understands as a pre-reflective self-relationship pointing towards the consciousness of the world. On the other hand, on the basis of this descriptive analysis Patočka consequently explicates all non-human life, inorganic matter, and finally the whole of nature as life in its own right, the essence of which is also a certain self-relation with a tendency towards consciousness. The article then briefly presents Merleau-Ponty’s theses on nature, and finally compares them with Patočka’s overall theses on nature. The advantage of Patočka’s notion of nature as against Merleau-Ponty’s is that, in Patočka’s view, nature encompasses both the principle of unity and individuality. On the other hand, the advantage of Merleau-Ponty’s understanding of nature as against Patočka’s lies in the consistent interconnectedness of the infinite life of nature and the finite life of individual beings.

International Law Obligations Arising in relation to Nationally Determined Contributions

2018 ◽  
Vol 7 (2) ◽  
pp. 251-275 ◽  
Author(s):  
Benoit Mayer
Keyword(s):  
Climate Change ◽  
International Law ◽  
Paris Agreement ◽  
The Other ◽  
Other Hand ◽  
Legal Obligations ◽  
Nationally Determined Contributions ◽  
The One

AbstractThis article analyzes the international law obligations that arise in relation to nationally determined contributions (NDCs). It argues that distinct and concurrent obligations arise from two separate sources. On the one hand, treaty obligations arise under the Paris Agreement, which imposes an obligation of conduct on parties: they must take adequate measures towards the realization of the mitigation targets contained in their NDCs. On the other hand, communications such as NDCs may constitute unilateral declarations that also create legal obligations. These unilateral declarations impose obligations of various types, which may extend beyond mitigation. For example, they may specify measures of implementation or demand the achievement of a particular result. The potential ‘double-bindingness’ of NDCs should be a central consideration in the interpretation of international law obligations regarding climate change.

3D MHD study of the Earth magnetosphere response during extreme space weather conditions

2021 ◽  
Author(s):  
Jacobo Varela Rodriguez ◽  
Sacha A. Brun ◽  
Antoine Strugarek ◽  
Victor Réville ◽  
Filippo Pantellini ◽  
...  
Keyword(s):  
Solar Wind ◽  
Space Weather ◽  
Coronal Mass Ejections ◽  
Main Sequence ◽  
Dynamic Pressure ◽  
Weather Conditions ◽  
The Sun ◽  
Earth Surface ◽  
The Earth ◽  
The Imf

<p><span>The aim of the study is to analyze the response of the Earth magnetosphere for various space weather conditions and model the effect of interplanetary coronal mass ejections. The magnetopause stand off distance, open-closed field lines boundary and plasma flows towards the planet surface are investigated. We use the MHD code PLUTO in spherical coordinates to perform a parametric study regarding the dynamic pressure and temperature of the solar wind as well as the interplanetary magnetic field intensity and orientation. The range of the parameters analyzed extends from regular to extreme space weather conditions consistent with coronal mass ejections at the Earth orbit. The direct precipitation of the solar wind on the Earth day side at equatorial latitudes is extremely unlikely even during super coronal mass ejections. For example, the SW precipitation towards the Earth surface for a IMF purely oriented in the Southward direction requires a IMF intensity around 1000 nT and the SW dynamic pressure above 350 nPa, space weather conditions well above super-ICMEs. The analysis is extended to previous stages of the solar evolution considering the rotation tracks from Carolan (2019). The simulations performed indicate an efficient shielding of the Earth surface 1100 Myr after the Sun enters in the main sequence. On the other hand, for early evolution phases along the Sun main sequence once the Sun rotation rate was at least 5 times faster (< 440 Myr), the Earth surface was directly exposed to the solar wind during coronal mass ejections (assuming today´s Earth magnetic field). Regarding the satellites orbiting the Earth, Southward and Ecliptic IMF orientations are particularly adverse for Geosynchronous satellites, partially exposed to the SW if the SW dynamic pressure is 8-14 nPa and the IMF intensity 10 nT. On the other hand, Medium orbit satellites at 20000 km are directly exposed to the SW during Common ICME if the IMF orientation is Southward and during Strong ICME if the IMF orientation is Earth-Sun or Ecliptic. The same way, Medium orbit satellites at 10000 km are directly exposed to the SW if a Super ICME with Southward IMF orientation impacts the Earth.</span></p><p>This work was supported by the project 2019-T1/AMB-13648 founded by the Comunidad de Madrid, grants ERC WholeSun, Exoplanets A and PNP. We extend our thanks to CNES for Solar Orbiter, PLATO and Meteo Space science support and to INSU/PNST for their financial support.</p>

Sign in / Sign up

Export Citation Format

Share Document