scholarly journals Special Issue on "Solar and Heliospheric Activities Connection with Near-Earth Space Weather: Sun-Earth Connection"

2013 ◽  
Vol 24 (2) ◽  
pp. 000
Author(s):  
Chin-Chun Wu ◽  
Sunny W. Y. Tam
Keyword(s):  
Space Weather ◽  
Special Issue ◽  
Earth Space ◽  
Near Earth Space ◽  
Earth Connection

scholarly journals GRAPE, Solar Terrestrial Physics in an operational environment

2013 ◽  
Vol 56 (2) ◽  
Author(s):  
Giorgiana De Franceschi ◽  
Maurizio Candidi
Keyword(s):  
Space Environment ◽  
Ionospheric Scintillation ◽  
Polar Regions ◽  
Special Issue ◽  
Operational Environment ◽  
Data Infrastructure ◽  
Earth Space ◽  
Near Earth Space ◽  
Starting Point ◽  
Space Data

<p>[…] The collection of papers that forms this special issue represents the whole amplitude of research that is being conducted in the framework of GRAPE, while also connecting to other initiatives that address the same objectives in regions outside the polar regions, and worldwide, such as the Training Research and Applications Network to Support the Mitigation of Ionospheric Threats (TRANSMIT; www.transmitionosphere.net), a Seventh Framework Programme (FP7) Marie Curie Initial Training Network that is focused on the study of ionospheric phenomena and their effects on systems embedded in our daily life, Near-Earth Space Data Infrastructure for e-Science (ESPAS), an FP7-funded project that aims to provide the e-Infrastructure necessary to support the access to observations, for the modeling and prediction of the near-Earth Space environment, Concept for Ionospheric Scintillation Mitigation for Professional GNSS in Latin America (CIGALA) and its follow-up and extension Countering GNSS High-Accuracy Applications Limitations due to Ionospheric Disturbances in Brazil (CALIBRA), both of which are funded by the European Commission in the frame of FP7, for facing the equatorial ionosphere and its impact on GNSS. The main objective of the present Special Issue of Annals of Geophysics is to collect recent reports on work performed in the polar regions and on the datasets collected in time by the instrumentation deployed across various countries. This collection will set the starting point for further research in the field, especially in the perspective of the new and very advanced space system that will be available in the next few years. […]</p>

scholarly journals Monitoring, analysis and post-casting of the Earth’s particle radiation environment during February 14–March 5, 2014

2019 ◽  
Vol 9 ◽  
pp. A29
Author(s):  
Vladimir Kalegaev ◽  
Mikhail Panasyuk ◽  
Irina Myagkova ◽  
Yulia Shugay ◽  
Natalia Vlasova ◽  
...  
Keyword(s):  
Space Weather ◽  
Geomagnetic Storms ◽  
Monitoring Data ◽  
Radiation Environment ◽  
Satellite Measurement ◽  
Outer Radiation Belt ◽  
Earth Space ◽  
Near Earth Space ◽  
Advantages And Disadvantages ◽  
Operational Models

Internet-based system of Space Monitoring Data Center (SMDC) of Skobeltsyn Institute of Nuclear Physics of Moscow State University (SINP MSU) has been developed to predict and analyze radiation conditions in near-Earth space. This system contains satellite measurement databases and operational models and devoted to collect, store and process space weather monitoring data in the near real-time. SMDC operational services acquire data from ACE, SDO, GOES, Electro-L, Meteor-M satellites and use them for forecasting, now-casting and post-casting of space weather factors. This paper is intended to give overview of operational services of SMDC Internet-based system and demonstrate their possibilities and limitations to analyze space weather phenomena and predict radiation and geomagnetic conditions in the near-Earth space during February 14–March 5, 2014. This prolonged period of high level solar and geomagnetic activity demonstrates various manifestations of the space weather: solar proton events, geomagnetic storms and outer radiation belt (RB) dynamics. Solar sources of interplanetary space disturbances and their influence on geomagnetic and radiation state of the Earth’s magnetosphere were described using output coming from SMDC’ Web-based applications. Validation of SMDC’s operational models was performed based on the quality of description of the physical conditions in near-Earth space during space weather events observed from February 14 to March 5, 2014. The advantages and disadvantages of SMDC operational services are illustrated and discussed based on comparison with data obtained from satellites.

The science of space weather

2008 ◽  
Vol 366 (1884) ◽  
pp. 4489-4500 ◽  
Author(s):  
Jonathan P Eastwood
Keyword(s):  
Magnetic Reconnection ◽  
Space Weather ◽  
Deep Understanding ◽  
Space Missions ◽  
Space Environment ◽  
International Level ◽  
Earth Space ◽  
Near Earth Space ◽  
Basic Physics ◽  
New Generation

The basic physics underpinning space weather is reviewed, beginning with a brief overview of the main causes of variability in the near-Earth space environment. Although many plasma phenomena contribute to space weather, one of the most important is magnetic reconnection, and recent cutting edge research in this field is reviewed. We then place this research in context by discussing a number of specific types of space weather in more detail. As society inexorably increases its dependence on space, the necessity of predicting and mitigating space weather will become ever more acute. This requires a deep understanding of the complexities inherent in the plasmas that fill space and has prompted the development of a new generation of scientific space missions at the international level.

scholarly journals Space Weather from a Southern Point of View

Eos ◽  
2016 ◽  
Author(s):  
Michael Hartinger ◽  
C. Clauer ◽  
Zhonghua Xu
Keyword(s):  
Space Weather ◽  
Point Of View ◽  
Space Environment ◽  
Complete Understanding ◽  
Earth Space ◽  
Near Earth Space

A recently completed instrument array in Antarctica provides a more complete understanding of the near-Earth space environment.

scholarly journals Method of Wavelet-Decomposition to Research Cosmic Ray Variations: Application in Space Weather

Symmetry ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2313
Author(s):  
Oksana Mandrikova ◽  
Bogdana Mandrikova
Keyword(s):  
Cosmic Rays ◽  
Space Weather ◽  
Outer Space ◽  
Cosmic Ray ◽  
High Energy ◽  
Radiation Hazard ◽  
Interstellar Space ◽  
Radio Communication ◽  
Earth Space ◽  
Near Earth Space

Since their discovery, cosmic rays have been an integral part of the development of fundamental physics, from the discovery of radiation coming to the Earth from outer space and the identification of high-energy particles in it, as well as new fundamental symmetries in the laws of nature, to the knowledge of residual matter and magnetic fields in interstellar space. Cosmic rays are used in a number of fundamental and applied research in solar-terrestrial physics and are important in the research of the near-Earth space processes. Cosmic ray variations observed on the Earth’s surface are an integral result of various solar, heliospheric, magnetospheric and atmospheric phenomena. The most significant changes in cosmic ray parameters are caused by coronal mass ejections and subsequent changes in the parameters of the interplanetary magnetic field and solar wind. Therefore, the study of cosmic rays makes it possible to obtain valuable information about the processes in the near-Earth space and in the Earth’s magnetosphere during disturbed periods. This article proposes a method for analyzing cosmic ray variations. It is based on the use of wavelet data decomposition operations and their combination with threshold functions. By using adaptive thresholds, the operations for detecting anomalous changes in data and for suppressing the noise were developed. Anomalies in cosmic rays can cause radiation hazard for astronauts, radio communication failures, as well as malfunctions in satellites, leading to the loss of orientation and destruction. Therefore, the task of timely diagnostics of anomalies is urgent. The paper describes the algorithms for the implementation of the method and shows their application in the space weather problem. We used data from the network of ground stations of neutron monitors. The efficiency of the method for detecting abnormal changes of different amplitudes and durations is shown. Application of the method made it possible to detect clearly and to evaluate Forbush effects in cosmic rays, which precede the onset of magnetic storms of various nature and strength.

Beacon-satellite observations of wave disturbances in the plasma of near-earth space

2004 ◽  
Vol 10 (2-3) ◽  
pp. 16-21
Author(s):  
O.F. Tyrnov ◽  
◽  
Yu.P. Fedorenko ◽  
L.F. Chernogor ◽  
◽  
...  
Keyword(s):  
Satellite Observations ◽  
Earth Space ◽  
Near Earth Space ◽  
Wave Disturbances

scholarly journals Dynamical evolution of Oort cloud comets to near-Earth space

2006 ◽  
Vol 2 (S236) ◽  
pp. 43-54 ◽  
Author(s):  
Olga A. Mazeeva
Keyword(s):  
Dynamical Evolution ◽  
Absolute Magnitude ◽  
Oort Cloud ◽  
Outer Solar System ◽  
Earth Space ◽  
Near Earth Space ◽  
Long Period ◽  
Order Of Magnitude ◽  
Orbital Periods ◽  
Stellar Perturbations

AbstractThe dynamical evolution of 2⋅105 hypothetical Oort cloud comets by the action of planetary, galactic and stellar perturbations during 2⋅109 years is studied numerically. The evolution of comet orbits from the outer (104 AU <a<5⋅104 AU, a is semimajor axes) and the inner Oort cloud (5⋅103 AU <a<104 AU) to near-Earth space is investigated separately. The distribution of the perihelion (q) passage frequency in the planetary region is obtained calculating the numbers of comets in every interval of Δ q per year. The flux of long-period (LP) comets (orbital periods P>200 yr) with perihelion distances q<1.5 AU brighter than visual absolute magnitude H10=7 is ∼ 1.5 comets per year, and ∼18 comets with H10<10.9. The ratio of all LP comets with q<1.5 AU to ‘new’ comets is ∼5. The frequency of passages of LP comets from the inner Oort cloud through region q<1.5 AU is ∼3.5⋅10−13 yr−1, that is roughly one order of magnitude less than frequency of passages of LP comets from the outer cloud (∼5.28⋅10−12 yr−1). We show that the flux of ‘new’ comets with 15<q<31 AU is higher than with q<15 AU, by a factor ∼1.7 for comets from the outer Oort cloud and, by a factor ∼7 for comets from the inner cloud. The perihelia of comets from the outer cloud previously passed through the planetary region are predominated in the Saturn-Uranus region. The majority of inner cloud comets come in the outer solar system (q>15 AU), and a small fraction (∼0.01) of them can reach orbits with q<1.5 AU. The frequency of transfer of comets from the inner cloud (a<104 AU) to the outer Oort cloud (a>104 AU), from where they are injected to the region q<1.5 AU, is ∼6⋅10−14 yr−1.

Sign in / Sign up

Export Citation Format

Share Document