2022
DOI: 10.5194/acp-22-6703-2022
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Exceptional middle latitude electron precipitation detected by balloon observations: implications for atmospheric composition

Abstract: Abstract. Energetic particle precipitation leads to ionization in the Earth's atmosphere, initiating the formation of active chemical species which destroy ozone and have the potential to impact atmospheric composition and dynamics down to the troposphere. We report on one exceptionally strong high-energy electron precipitation event detected by balloon measurements in geomagnetic midlatitudes on 14 December 2009, with ionization rates locally comparable to strong solar proton events. This electron precipitati… Show more

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Cited by 9 publications
(5 citation statements)
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“…(2016) was applied in Mironova et al. (2019a, 2019b, 2022). These calculations yielded electron fluxes at energies below hundreds of keV, which were consistent with the results of measurements on the POES satellites (Bazilevskaya et al., 2021), however, electron fluxes with energies above hundreds of keV were often underestimated by several orders of magnitude.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…(2016) was applied in Mironova et al. (2019a, 2019b, 2022). These calculations yielded electron fluxes at energies below hundreds of keV, which were consistent with the results of measurements on the POES satellites (Bazilevskaya et al., 2021), however, electron fluxes with energies above hundreds of keV were often underestimated by several orders of magnitude.…”
Section: Introductionmentioning
confidence: 99%
“…In the region of tens of keV, it can be described by the Maxwell distribution; at higher energies, the spectrum has an exponential or a power-law shape (Clilverd et al, 2008;Millan et al, 2013;Whittaker et al, 2013). The exponential shape of the energy spectrum of precipitating electrons as it was implemented in Makhmutov et al (2016) was applied in Mironova et al (2019aMironova et al ( , 2019bMironova et al ( , 2022. These calculations yielded electron fluxes at energies below hundreds of keV, which were consistent with the results of measurements on the POES satellites (Bazilevskaya et al, 2021), however, electron fluxes with energies above hundreds of keV were often underestimated by several orders of magnitude.…”
mentioning
confidence: 99%
“…HO x production by energetic electron precipitation (EEP) occurs only below about 90 km altitude where enough water vapor is available and NO x production by auroral electrons and energetic electrons accelerates mostly about 110-100 km altitude [4,7]. Finally energetic electron precipitation via production of ion pairs impacts middle atmosphere chemistry, dynamics and leads to ozone depletion, e.g., [1,4,[8][9][10][11][12].…”
Section: Introductionmentioning
confidence: 99%
“…Ozone depletion in the polar mesosphere about 60-80 km is a reason by enhanced HO x and NO x concentrations that involves known catalytical ozone destruction cycles, e.g., [9,10,12,13]. The maximum ozone depletion in the polar mesosphere is the most pronounced at altitudes about 79 km and can exceed up to 90% for days, e.g., [10,11]. Such ozone depletion under EEP is comparable to the ozone destruction after one of the most powerful solar energetic particle (SEP) event of January 2005 [14].…”
Section: Introductionmentioning
confidence: 99%
“…Ionization rates play a key role in production of reactive odd nitrogen (NO x ) [6] and odd hydrogen (HO x ) [7] in the atmosphere. Finally, EEP via production of ion pairs impacts middle atmosphere chemistry and dynamics and leads to ozone depletion [8][9][10][11][12][13]. To better understand this relationship, it is important to have realistic observations to properly characterize energetic electron precipitation [14] and atmospheric ionization rates [15,16], which are incorporated into chemistry-climate models.…”
Section: Introductionmentioning
confidence: 99%