Ionization effect of solar protons in the Earth atmosphere – Case study of the 20 January 2005 SEP event

Mishev, Alexander; Velinov, P.; Mateev, L. N.; Tassev, Yordan

doi:10.1016/j.asr.2011.06.004

Cited by 28 publications

(28 citation statements)

References 28 publications

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“…43 (5, 6). It is demonstrated (Mishev et al , 2011) that the ionization effect on event onset at 08:00 UT (Fig. 12A) is greater than that produced by delayed component at 23:00 UT (Fig.…”

Section: Ionization Effect In the Atmosphere During Glementioning

confidence: 99%

Impact of cosmic rays and solar energetic particles on the Earth’s ionosphere and atmosphere

Velinov

Asenovski

Kudela

et al. 2013

J. Space Weather Space Clim.

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A brief review of the study during COST Action ES0803 of effects due to cosmic rays (CR) and solar energetic particles (SEP) in the ionosphere and atmosphere is presented. Models CORIMIA (COsmic Ray Ionization Model for Ionosphere and Atmosphere) and application of CORSIKA (COsmic Ray SImulations for KAscade) code are considered. They are capable to compute the cosmic ray ionization profiles at a given location, time, solar and geomagnetic activity. Intercomparison of the models, as well as comparison with direct measurements of the atmospheric ionization, validates their applicability for the entire atmosphere and for the different levels of the solar activity. The effects of CR and SEP can be very strong locally in the polar cap regions, affecting the physical-chemical and electrical properties of the ionosphere and atmosphere. Contributions here were also made by the anomalous CR, whose ionization is significant at high geomagnetic latitudes (above 65°-70°). Several recent achievements and application of CR ionization models are briefly presented. This work is the output from the SG 1.1 of the COST ES0803 action (2008)(2009)(2010)(2011)(2012) and the emphasis is given on the progress achieved by European scientists involved in this collaboration.

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“…43 (5, 6). It is demonstrated (Mishev et al , 2011) that the ionization effect on event onset at 08:00 UT (Fig. 12A) is greater than that produced by delayed component at 23:00 UT (Fig.…”

Section: Ionization Effect In the Atmosphere During Glementioning

confidence: 99%

Impact of cosmic rays and solar energetic particles on the Earth’s ionosphere and atmosphere

Velinov

Asenovski

Kudela

et al. 2013

J. Space Weather Space Clim.

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“…The reason might be that our CRW is defined to reflect the entry of lower energetic particles to the magnetosphere rather than that of the relativistic protons. In the future, we would study the entry of much higher energy particles, so that our results could be compared with the neutron monitor count rates (Plainaki et al, 2007;Cordaro et al, 2001;Storini, 2003;Mishev et al, 2011;Vainio et al, 2009;Plainaki et al, 2014Plainaki et al, , 2015. In addition, the results in this paper may be used to study the effect of the energetic particles on the ionosphere and the atmosphere (Nesse Tyssøy et al, 2013;Galand, 2001) quantitatively.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

“…In this work, we studied the relationships between cutoff rigidity variations and solar wind- magnetospheric conditions such as the z component of the IMF, the solar wind dynamic pressure (P dyn ), the Dst index and AE index directly. Such an investigation is quite important since it can provide feedback for space weather applications (Plainaki et al, 2007(Plainaki et al, , 2009Dmitriev et al, 2010;Tyssøy and Stadsnes, 2014) related to estimation of the atmosphere radiation exposure (Mishev et al, 2011) and to the secondary cosmic ray particles arriving to the ground.…”

Section: Crw During Geomagnetic Stormsmentioning

confidence: 99%

The geomagnetic cutoff rigidities at high latitudes for different solar wind and geomagnetic conditions

Chu

Qin

2016

Ann. Geophys.

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Abstract. Studying the access of the cosmic rays (CRs) into the magnetosphere is important to understand the coupling between the magnetosphere and the solar wind. In this paper we numerically studied CRs' magnetospheric access with vertical geomagnetic cutoff rigidities using the method proposed by Smart and Shea (1999). By the study of CRs' vertical geomagnetic cutoff rigidities at high latitudes we obtain the CRs' window (CRW) whose boundary is determined when the vertical geomagnetic cutoff rigidities drop to a value lower than a threshold value. Furthermore, we studied the area of CRWs and found out they are sensitive to different parameters, such as the z component of interplanetary magnetic field (IMF), the solar wind dynamic pressure, AE index, and Dst index. It was found that both the AE index and Dst index have a strong correlation with the area of CRWs during strong geomagnetic storms. However, during the medium storms, only AE index has a strong correlation with the area of CRWs, while Dst index has a much weaker correlation with the area of CRWs. This result on the CRW can be used for forecasting the variation of the cosmic rays during the geomagnetic storms.

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“…SEPs are characterized by the increase, over periods of minutes to days, of the flux of protons, alpha particles, and minor amounts of heavier ions in the Mev range, as well as energetic (from 100s of keV to 10s of MeV) electrons (Mishev et al 2011;Berrilli et al 2014). Exceptional SEP events are sometimes detected by neutron monitors on the ground.…”

Section: Solar Windmentioning

confidence: 99%

What characterizes planetary space weather?

Lilensten

Coates

Déhant

et al. 2014

Astron Astrophys Rev

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Space weather has become a mature discipline for the Earth space environment. With increasing efforts in space exploration, it is becoming more and more necessary to understand the space environments of bodies other than Earth. This is the background for an emerging aspect of the space weather discipline: planetary space weather. In this article, we explore what characterizes planetary space weather, using some examples throughout the solar system. We consider energy sources and timescales, the characteristics of solar system objects and interaction processes. We

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Ionization effect of solar protons in the Earth atmosphere – Case study of the 20 January 2005 SEP event

Cited by 28 publications

References 28 publications

Impact of cosmic rays and solar energetic particles on the Earth’s ionosphere and atmosphere

Impact of cosmic rays and solar energetic particles on the Earth’s ionosphere and atmosphere

The geomagnetic cutoff rigidities at high latitudes for different solar wind and geomagnetic conditions

What characterizes planetary space weather?

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