Prediction of Ground Level Enhancements

2017 ◽  
Vol 13 (S335) ◽  
pp. 301-303
Author(s):  
Marlon Núñez ◽  
Pedro J. Reyes-Santiago ◽  
Olga E. Malandraki
Keyword(s):  
Neutron Monitor ◽  
Ground Level ◽  
Prediction Performance ◽  
Probability Of Detection ◽  
Satellite Network ◽  
Prediction Tool ◽  
X Ray ◽  
Horizon 2020 ◽  
Research And Innovation ◽  
Ground Level Enhancements

AbstractThis paper summarizes the first tool that is able to predict Ground Level Enhancements (GLE). It makes real-time predictions of the occurrence of GLE events from the analysis of soft X-ray and differential proton flux measured by the GOES satellite network. Before the development of this tool, space weather systems have been warning users about evolving GLE events by processing neutron measurements recorded on ground level. This tool, called HESPERIA UMASEP-500, can predict GLE events before the detection by any neutron monitor (NM) station. The prediction performance measured for the period from 1986 to 2016 is presented for two consecutive periods, because of their notable difference in performance. For the 2000-2016 period, this prediction tool obtained a probability of detection (POD) of 53.8% (7 of 13 GLE events), a false alarm ratio (FAR) of 30.0%, and average warning times (AWT) of 8 min and 15 min with respect to the first NM station’s alert and the GLE Alert Plus warning, respectively. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under agreement No 637324.

Solar extreme events on the data of Alma-Ata neutron monitor: Identification of ground level enhancements

2009 ◽  
Vol 43 (4) ◽  
pp. 509-514 ◽  
Author(s):  
R.U. Beisembaev ◽  
V.I. Drobzhev ◽  
E.A. Dryn ◽  
O.N. Kryakunova ◽  
N.F. Nikolaevskiy
Keyword(s):  
Extreme Events ◽  
Neutron Monitor ◽  
Ground Level ◽  
Ground Level Enhancements

SEARCH FOR ENHANCEMENTS OF MUONS AT SEA LEVEL FROM TRANSIENT EVENTS

2005 ◽  
Vol 20 (29) ◽  
pp. 6941-6943
Author(s):  
C. R. A. AUGUSTO ◽  
C. E. NAVIA ◽  
M. B. ROBBA
Keyword(s):  
Solar Flare ◽  
Sea Level ◽  
Gamma Ray ◽  
Unknown Origin ◽  
Ground Level ◽  
X Ray ◽  
Raster Scan ◽  
Main Target ◽  
Transient Events ◽  
Ground Level Enhancements

The main target of this study is a search for the origin of two ground level enhancements (GLEs), observed on December of 2003 at sea level by using the TUPI muon telescope. The results show that one of them has a strong correlation with solar flare, while the other has an unknown origin, because there is not satellite report of solar flare, nor the prompt X-ray emission and neither the excess of nuclei during the raster scan where the GLE was observed. Even so, two possibilities are analyzed: the solar flare hypothesis and the gamma ray burst (GRB) hypothesis.

scholarly journals Current status and possible extension of the global neutron monitor network

2020 ◽  
Vol 10 ◽  
pp. 17
Author(s):  
Alexander Mishev ◽  
Ilya Usoskin
Keyword(s):  
Space Weather ◽  
Neutron Monitor ◽  
Cosmic Ray ◽  
Ground Level ◽  
Solar Proton ◽  
Energetic Particles ◽  
Solar Energetic Particles ◽  
Current Status ◽  
Flight Altitude ◽  
Ground Level Enhancements

The global neutron monitor network has been successfully used over several decades to study cosmic ray variations and fluxes of energetic solar particles. Nowadays, it is used also for space weather purposes, e.g. alerts and assessment of the exposure to radiation. Here, we present the current status of the global neutron monitor network. We discuss the ability of the global neutron monitor network to study solar energetic particles, specifically during large ground level enhancements. We demonstrate as an example, the derived solar proton characteristics during ground level enhancements GLE #5 and the resulting effective dose over the globe at a typical commercial jet flight altitude of 40 kft (≈12,200 m) above sea level. We present a plan for improvement of space weather services and applications of the global neutron monitor network, specifically for studies related to solar energetic particles, namely an extension of the existing network with several new monitors. We discuss the ability of the optimized global neutron monitor network to study various populations of solar energetic particles and to provide reliable space weather services.

ALERT SYSTEM FOR GROUND LEVEL COSMIC-RAY ENHANCEMENTS PREDICTION AT THE ATHENS NEUTRON MONITOR NETWORK IN REAL-TIME

2005 ◽  
Vol 20 (29) ◽  
pp. 6711-6713 ◽  
Author(s):  
G. MARIATOS ◽  
H. MAVROMICHALAKI ◽  
C. SARLANIS ◽  
G. SOUVATZOGLOU ◽  
A. BELOV ◽  
...  
Keyword(s):  
Real Time ◽  
Neutron Monitor ◽  
High Frequency ◽  
Power Transmission ◽  
Cosmic Ray ◽  
Ground Level ◽  
Alert System ◽  
Radio Communications ◽  
Cosmic Particle ◽  
Ground Level Enhancements

The prediction of solar activity is important for various technologies, including operation of low-Earth orbiting satellites, electric power transmission grids, high-frequency radio-communications etc. The Athens Neutron Monitor Network in Real Time, initiated in December 2003, provides data from twenty-one real-time neutron monitor stations, useful for real-time monitoring of cosmic particle fluxes. Recently a program for forecasting the arrival of dangerous middle energy particles on the Earth's surface has started. These program processes the data taken from the Neutron Monitor Network and informs us about the onset of ground level enhancements. In this way enough time to protect technological systems will be given.

scholarly journals Effective Rigidity of a Polar Neutron Monitor for Recording Ground-Level Enhancements

Solar Physics ◽  
2018 ◽  
Vol 293 (7) ◽  
Author(s):  
Sergey A. Koldobskiy ◽  
Gennady A. Kovaltsov ◽  
Ilya G. Usoskin
Keyword(s):  
Neutron Monitor ◽  
Ground Level ◽  
Ground Level Enhancements

scholarly journals DRIvE Project Unlocks Demand Response Potential with Digital Twins

Proceedings ◽  
2020 ◽  
Vol 65 (1) ◽  
pp. 14
Author(s):  
Laura Pérez ◽  
Juan Espeche ◽  
Tatiana Loureiro ◽  
Aleksandar Kavgić
Keyword(s):  
Knowledge Transfer ◽  
Demand Response ◽  
Low Carbon ◽  
Distribution Grid ◽  
Horizon 2020 ◽  
Research And Innovation ◽  
Digital Twins ◽  
Future Workshop ◽  
Innovative Solutions ◽  
Innovation Project

DRIvE (Demand Response Integration Technologies) is a research and innovation project funded under the European Union’s Horizon 2020 Framework Program, whose main objective is unlocking the demand response potential in the distribution grid. DRIvE presented how the use of digital twins de-risks the implementation of demand response applications at the “Flexibility 2.0: Demand response and self-consumption based on the prosumer of Europe’s low carbon future” workshop within the conference “Sustainable Places 2020”. This workshop was organized to cluster and foster knowledge transfer between several EU projects, each developing innovative solutions within the field of demand response, energy flexibility, and optimized synergies between actors of the built environment and the power grid.

Radial diffusion coefficients database in the frame of SafeSpace project

2021 ◽  
Author(s):  
Christos Katsavrias ◽  
Ioannis A. Daglis ◽  
Afroditi Nasi ◽  
Constantinos Papadimitriou ◽  
Marina Georgiou
Keyword(s):  
Diffusion Coefficients ◽  
Radiation Belt ◽  
Field Measurements ◽  
Radial Diffusion ◽  
Relativistic Electrons ◽  
Outer Radiation Belt ◽  
Horizon 2020 ◽  
Research And Innovation ◽  
The Difference ◽  
Cycle 24

<p>Radial diffusion has been established as one of the most important mechanisms contributing the acceleration and loss of relativistic electrons in the outer radiation belt. Over the past few years efforts have been devoted to provide empirical relationships of radial diffusion coefficients (D<sub>LL</sub>) for radiation belt simulations yet several studies have suggested that the difference between the various models can be orders of magnitude different at high levels of geomagnetic activity as the observed D<sub>LL</sub> have been shown to be highly event-specific. In the frame of SafeSpace project we have used 12 years (2009 – 2020) of multi-point magnetic and electric field measurements from THEMIS A, D and E satellites to create a database of calculated D<sub>LL</sub>. In this work we present the first statistics on the evolution of D<sub>LL </sub>during the various phases of Solar cycle 24 with respect to the various solar wind parameters and geomagnetic indices.</p><p>This work has received funding from the European Union's Horizon 2020 research and innovation programme “SafeSpace” under grant agreement No 870437.</p>

Sign in / Sign up

Export Citation Format

Share Document