Meteorological Effects Application to Cosmic Ray Latitude Survey Data Processing

Дорман, Л. И.

doi:10.1007/978-1-4020-2113-8_16

Cited by 4 publications

(7 citation statements)

References 17 publications

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“…value of b for a specific type of particle depends on many other factors such as latitude (geomagnetic rigidity), altitude, and time of observation. The method to define the barometric coefficient of the different components of SCRs has been studied by many researchers in the past [1,11]. During the last 60 years, the factors responsible for the change in b have been investigated using the data from networks of the neutron as well as muon detectors.…”

Section: Jcap09(2021)045mentioning

confidence: 99%

“…Raw data from a neutron detector is corrected for pressure using eq. (1.1) [1,11]. Calculating b for an NM station has become much easier because of an online tool developed by the Athens Cosmic ray team, as described by Paschalis et al (2013), which uses the data available on NMDB [15].…”

Section: Jcap09(2021)045mentioning

confidence: 99%

“…Neutron monitors (NMs) have been used to collect neutron data for more than seven decades. The meteorological effects on neutron flux due to pressure, temperature, humidity, wind, snow, atmospheric electric field have been studied extensively [1][2][3][4][5][6][7]. The most prominent effect is due to the atmospheric pressure, which has been reported since the 1920s [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Earlier, it was interpreted as the effect due to absorption of CR by the atmosphere. Later, Dorman (1972) discussed the complex nature of the barometric effect as a result of absorption, decay, and generation of SCRs [1].…”

Section: Introductionmentioning

confidence: 99%

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Barometric pressure correction to gamma-ray observations and its energy dependence

Datar

Vichare

Selvaraj³

2021

J. Cosmol. Astropart. Phys.

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Cosmic rays (CRs) have been studied extensively in the last century to understand the processes in the universe as well as in the solar system. In today's satellite era, although many observations are made from space, CR observations from the ground are still viewed as a significant tool. These observations, however, mainly detect the secondary cosmic rays (SCRs) produced via nuclear spallation processes during the interactions of the primary CR with the atmospheric nuclei. Neutron, muon, and gamma are the major components of SCRs detected on the ground. It is well known that atmospheric pressure plays a vital role in the SCR flux observed on the ground. Barometric pressure correction is standard practice for neutron monitor (NM) data. For gamma-rays, however, being massless, their pressure dependence is not intuitive. Nevertheless, the pressure affects the particles such as e±, μ±, which produce gamma rays in the cascade. Subsequently, the indirect pressure dependence of the gamma-ray flux can be anticipated. We examine this aspect in detail by studying the gamma-ray counts detected by the NaI (Tl) detector. The present study confirms that there is no correlation between the atmospheric pressure and the total counts covering the entire energy range (150 keV–10 MeV) recorded by the NaI detector. However, the scenario differs when the fluxes of different energies are investigated separately. The gamma rays of energy below ∼3 MeV are primarily due to the radioactivity originating from the ground, whereas gamma rays above 3 MeV are mainly produced in the CR cascade. It is observed that the counts of energy above 3 MeV are well anti-correlated with the atmospheric pressure. The barometric coefficient obtained here matches well with that reported by the previous studies which used anti-coincidence methods. This may indicate that the role of directly detected muons and electrons by the NaI (Tl) in the observed pressure dependence is non-significant. It is demonstrated that applying the barometric correction formula to NaI (Tl) data successfully removes the pressure dependence in the flux above 3 MeV. Therefore, we suggest that the particle flux data above 3 MeV measured by NaI (Tl) detector needs to be corrected for the local atmospheric pressure variations.

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Section: Jcap09(2021)045mentioning

confidence: 99%

Section: Jcap09(2021)045mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Barometric pressure correction to gamma-ray observations and its energy dependence

Datar

Vichare

Selvaraj³

2021

J. Cosmol. Astropart. Phys.

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“…Interrelations between processes in the Earth's atmosphere and variations in secondary cosmic rays have been studied for several decades now [1], and interest to this field of research are revived in recent years. The increased attention given to the state of the environment is one reason for this.…”

Section: Introductionmentioning

confidence: 99%

Variations of the high energy muon flux and space-time structure of the temperature profile in the atmosphere

Kostyuk

Petkov

Novoseltseva

et al. 2013

J. Phys.: Conf. Ser.

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The effect of the electric field of the atmosphere on cosmic rays

Lidvansky

2003

J. Phys. G: Nucl. Part. Phys.

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A review of the present-day situation in the experimental studies of variations of cosmic rays during thunderstorms is given. It is shown that these experiments can be a useful tool for studying very interesting physical effects in the electrically disturbed atmosphere. The main emphasis is laid on the experimental verification of the runaway breakdown theory and on the role of cosmic rays in the processes of lightning initiation.

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Meteorological Effects Application to Cosmic Ray Latitude Survey Data Processing

Cited by 4 publications

References 17 publications

Barometric pressure correction to gamma-ray observations and its energy dependence

Barometric pressure correction to gamma-ray observations and its energy dependence

Variations of the high energy muon flux and space-time structure of the temperature profile in the atmosphere

The effect of the electric field of the atmosphere on cosmic rays

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